Resin composition, method for producing resin composition, pellet, molded body, injection molded body, and machine

Abstract

To provide a thermoplastic resin composition having excellent flame retardancy.SOLUTION: This resin composition contains: a matrix 1 comprising mainly a thermoplastic resin; a plurality of flame retardant particles 2 having particle diameters of 0.1 μm or more; and a plurality of elastomer particles 3 having particle diameters of 0.1 μm or more. An elastomer material that constitutes the plurality of elastomer particles 3 is a thermoplastic elastomer. The plurality of elastomer particles 3 is dispersed in the matrix 1. Among the plurality of elastomer particles 3, a first elastomer particle 3a and a second elastomer particle 3b are present at a distance of 20 μm or less from each other. Among the plurality of flame retardant particles 2, first flame retardant particles 2a are present in the first elastomer particle 3a. Among the plurality of flame retardant particles 2, second flame retardant particles 2b are present in the second elastomer particle 3b.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a resin composition. [Background technology]

[0002] Mechanical properties and flame retardancy can be controlled by adding an elastomer or a flame retardant to a thermoplastic resin. Patent Documents 1 to 3 disclose resin compositions containing an elastomer and a flame retardant. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2001-152033 A [Patent Document 2] Japanese Patent Application Laid-Open No. 2010-47749 [Patent Document 3] Japanese Patent Application Publication No. 7-331033 Summary of the Invention [Problem to be solved by the invention]

[0004] However, there is room for improvement in flame retardancy in the resin compositions disclosed in Patent Documents 1 to 3. Therefore, one aspect of the present embodiment is aimed at providing a thermoplastic resin composition having excellent flame retardancy. [Means for solving the problem]

[0005] The resin composition of the present invention comprises: A resin composition comprising a matrix containing a thermoplastic resin as a main component, a plurality of flame retardant particles having a particle diameter of 0.1 μm or more, and a plurality of elastomer particles having a particle diameter of 0.1 μm or more, the elastomer material constituting the plurality of elastomer particles is a thermoplastic elastomer; the plurality of elastomer particles are dispersed in the matrix; the first elastomer particles and the second elastomer particles among the plurality of elastomer particles are present at intervals of 20 μm or less, a first flame retardant particle of the plurality of flame retardant particles is present in the first elastomer particle, and a second flame retardant particle of the plurality of flame retardant particles is present in the second elastomer particle. [Effects of the Invention]

[0006] According to this embodiment, a resin composition having excellent flame retardancy can be provided. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 2 is a schematic diagram illustrating the morphology of the resin composition of the present embodiment. [Figure 2] 1 is a schematic diagram illustrating impact absorption in a molded article obtained by molding the resin composition of the present embodiment. [Figure 3] FIG. 2 is a schematic diagram illustrating the morphology of the resin composition of the present embodiment when it contains a filler. [Figure 4] FIG. 1 is a schematic diagram illustrating a device according to an embodiment of the present invention. [Figure 5] 1 shows cross-sectional SEM images of Example 1 and Comparative Example 1. DETAILED DESCRIPTION OF THE INVENTION

[0008] ≪Resin composition≫ The resin composition according to this embodiment will be described in detail. FIG. 1 is a schematic diagram illustrating the morphology of the resin composition according to this embodiment. FIG. 1(a) shows the morphology of the resin composition according to this embodiment, and FIG. 1(b) shows the morphology of a comparative resin composition. In FIG. 1, 1 is a matrix, 2 is flame retardant particles, and 3 is elastomer particles.

[0009] As shown in FIG. 1( a ), a resin composition 10 of this embodiment contains a matrix 1 , flame retardant particles 2 , and elastomer particles 3 .

[0010] The main component of the matrix 1 is a thermoplastic resin. Therefore, a matrix 1 having a resin as its main component can be referred to as a matrix resin or a resin matrix. The main component of the plurality of flame retardant particles 2 may be an organic or inorganic material. Furthermore, the flame retardant particles 2 may be surface-treated as needed. The main component of the plurality of elastomer particles 3 is typically an organic material, but may also be an inorganic material. Elastomer particles 3 having an organic material as their main component can be referred to as organic elastomer particles. In a matrix 1 having a thermoplastic resin as its main component, the thermoplastic resin as its main component has the largest mass, and the mass of the thermoplastic resin as its main component in the matrix 1 is preferably 50 mass% or more, more preferably 75 mass% or more, and even more preferably 90 mass% or more. A matrix 1 having a thermoplastic resin as its main component may contain a secondary component in addition to the thermoplastic resin as its main component, and this secondary component does not have to be a thermoplastic resin.

[0011] Since the particle diameter of the plurality of flame retardant particles 2 of interest is 0.1 μm or more, the resin composition 10 contains a plurality of flame retardant particles 2 having a particle diameter of 0.1 μm or more. The resin composition 10 may or may not contain a plurality of flame retardant particles having a particle diameter of less than 0.1 μm. Since the particle diameter of the plurality of elastomer particles 3 of interest is 0.1 μm or more, the resin composition 10 contains a plurality of elastomer particles 3 having a particle diameter of 0.1 μm or more. The resin composition 10 may or may not contain a plurality of elastomer particles having a particle diameter of less than 0.1 μm. The particle diameter of the flame retardant particles 2 or elastomer particles 3 of interest is 0.1 μm or more because particles having a particle diameter of 0.1 μm or more significantly contribute to controlling mechanical properties.

[0012] As shown in FIG. 1(a), in the resin composition 10 of this embodiment, the flame retardant particles 2 are present within the elastomer particles 3. In other words, the flame retardant particles 2 are incorporated into the elastomer particles 3 to form a core-shell structure. The flame retardant particles 2 form the core, and the elastomer material forms the shell. The flame retardant particles 2 and the elastomer particles 3 then constitute composite particles having a core-shell structure. These composite particles are dispersed in a matrix 1. The resin composition of this embodiment can achieve excellent flame retardancy and impact resistance because the flame retardant particles 2 and the elastomer particles 3 form a core-shell structure.

[0013] Specifically, regarding flame retardancy, the presence of flame retardant particles 2 in combustible elastomer particles 3 inhibits combustion of the elastomer material that constitutes the elastomer particles 3, thereby improving the flame retardancy of the resin composition.

[0014] Impact resistance will be specifically described with reference to FIG. 2. FIG. 2 is a schematic diagram illustrating impact absorption in a molded article obtained by molding the resin composition of this embodiment. As shown in FIG. 2, when an impact is applied to the resin molded article so as to cause deformation in the direction of arrow 7, the matrix 1 is oriented around the elastomer particles 3, forming crazes 5, thereby more efficiently absorbing the impact. Furthermore, because the flame retardant particles 2 are incorporated into the elastomer particles 3, they do not become the starting point of fracture, thereby improving impact strength.

[0015] On the other hand, as shown in FIG. 1(b), a comparative resin composition 20 contains a matrix 1, a plurality of flame retardant particles 2, and a plurality of elastomer particles 3. In the comparative resin composition 20, the flame retardant particles 2 are not incorporated into the elastomer particles 3, and the flame retardant particles 2 and the elastomer particles 3 are dispersed independently. This is referred to as an independent dispersion structure. Because the comparative resin composition 20 has an independent dispersion structure in which the flame retardant particles 2 and the elastomer particles 3 are dispersed independently, the comparative resin composition 20 is inferior to the resin composition 10 of this embodiment in flame retardancy and mechanical properties, such as impact strength.

[0016] As shown in FIG. 1(a), the resin composition 10 of this embodiment has a structure in which elastomer particles 3 are dispersed in a matrix 1. In an observation cross section of the resin composition 10, a first elastomer particle 3a and a second elastomer particle 3b among the plurality of elastomer particles 3 are spaced apart at intervals of 20 μm or less, preferably 10 μm or less. That is, the distance between the first elastomer particle 3a and the second elastomer particle 3b is 20 μm or less, preferably 10 μm or less. The first elastomer particle 3a and the second elastomer particle 3b here can be selected as two elastomer particles 3 of interest among the plurality of elastomer particles 3. That is, the condition for the two elastomer particles 3 of interest is that the distance between the two elastomer particles is 20 μm or less, preferably 10 μm or less. In this embodiment, the first elastomer particles 3a and the second elastomer particles 3b, which are present in close proximity to each other, have an independently dispersed structure. The second elastomer particles 3b may be the elastomer particles that are closest to the first elastomer particles 3a among the multiple elastomer particles 3, or alternatively, there may be other elastomer particles that are closer to the first elastomer particles 3a than the second elastomer particles 3b. It is not essential that any elastomer particle 3 be surrounded by other elastomer particles 3 within a 20 μm or 10 μm radius. Note that focusing on two elastomer particles 3 that are spaced apart by, for example, 100 μm or more is not particularly suitable for evaluating an independently dispersed structure. Focusing on two elastomer particles 3 that are extremely far apart (1 mm or more) is also inappropriate. The plurality of elastomer particles 3 may include those in which the distance between the two closest elastomer particles 3 exceeds 20 μm, but such two elastomer particles 3 do not need to be selected as the pair of first elastomer particles 3 a and second elastomer particles 3 b that are of interest for evaluating the independent dispersion structure. The distance between the first elastomer particle 3 a and the second elastomer particle 3 b is preferably 0.1 μm or more, and more preferably 1 μm or more.This is because the elastomer particles 3a and 3b that are extremely close to each other are not very suitable for evaluating dispersibility.

[0017] In an observed cross section of the resin composition 10, first flame retardant particles 2a of the plurality of flame retardant particles 2 are present in the first elastomer particles 3a, and second flame retardant particles 2b of the plurality of flame retardant particles 2 are present in the second elastomer particles 3b. Preferably, a first flame retardant particle group including the first flame retardant particles 2a is dispersed in the first elastomer particles 3a, and a second flame retardant particle group including the second flame retardant particles 2b is dispersed in the second elastomer particles 3b.

[0018] 10 of the observed cross section of the resin composition 10 2 μm 2 Over 130 2 μm 2 X% by number of 10 or more elastomer particles 3 in the following area range are separated via the matrix 1. 2 μm 2 Over 130 2 μm 2 X number % of 10 or more elastomer particles 3 in the following area range is present in the matrix 1 phase. X (number %) is, for example, a majority of 50% or more, preferably 70% or more, more preferably 80% or more, and even more preferably 90% or more.

[0019] 10 of the observed cross section of the resin composition 10 2 μm 2 Over 130 2 μm 2 It is preferable that Y% by number of 10 or more flame retardant particles 2 in the following area range are separated via the elastomer material constituting the plurality of elastomer particles 3. 2 Over 130 2 μm 2It is preferable that 10 or more flame retardant particles 2 in the following area range are present in the elastomer particles 3 at a number percentage of Y. Y (number percentage) is, for example, a majority of 50% or more, preferably 70% or more, more preferably 80% or more, and even more preferably 90% or more.

[0020] 10 of the observed cross section of the above-mentioned resin composition 10 2 μm 2 Over 130 2 μm 2 The following area range preferably includes the above-mentioned first elastomer particles 3a, second elastomer particles 3b, first flame retardant particles 2a, and second flame retardant particles 2b. 2 μm 2 Over 130 2 μm 2 The occupancy rate of the matrix 1 in the following area range is preferably 30 area % or more and 90 area % or less. 2 μm 2 Over 130 2 μm 2 The occupancy rate of the plurality of flame retardant particles 2 in the following area range is preferably 1 area % or more and 50 area % or less. 2 μm 2 Over 130 2 μm 2 The occupancy rate within the following area range is preferably 1 area % or more and 50 area % or less of the elastomer material constituting the plurality of elastomer particles 3. The outline of the area range of the observed cross section of the resin composition 10 may be square, rectangular, or circular, for example, a 100 μm × 100 μm square or a 10 μm × 10 μm square, but the maximum width of the area range is preferably 200 μm or less. The maximum width of the area range of a 100 μm × 100 μm square is the diagonal (√2) × 100 μm.

[0021] 100 in resin composition 10 3 μm 3 More than 1mm 3In the composition in the following volume range, it is preferable that the matrix 1 is 30 mass % or more and 90 mass % or less. 3 μm 3 More than 1mm 3 In the composition in the following volume range, the plurality of flame retardant particles 2 is preferably 1 mass % or more and 50 mass % or less in the resin composition 10. 3 μm 3 More than 1mm 3 In the composition within the following volume range, the elastomer material constituting the plurality of elastomer particles 3 is preferably 1% by mass or more and 50% by mass or less. This volume range preferably includes the first elastomer particles 3a, second elastomer particles 3b, first flame retardant particles 2a, and second flame retardant particles 2b. The contour of the volume range of the resin composition 10 may be a cube, rectangular parallelepiped, or sphere, for example, a 100 μm × 100 μm × 100 μm cube or a 1 mm × 1 mm × 1 mm cube. However, the maximum width of the volume range is preferably 2 mm or less, more preferably 1 mm or less. The maximum width of the volume range of a 1 mm × 1 mm × 1 mm rectangular parallelepiped is the diagonal (√3) × 1 mm.

[0022] <Matrix 1> A thermoplastic resin is used as the matrix resin. Among thermoplastic resins, it is preferable to use a polar polymer, which has excellent heat resistance and mechanical strength. A polar polymer is a polymer containing polar groups, such as amide groups, imide groups, carbonyl groups (ketone groups), and ester bonds, in its main chain. Polar polymers are generally referred to as general-purpose engineering plastics or super engineering plastics, and are used in applications requiring higher physical properties, such as heat resistance and strength, than general-purpose resins such as polyethylene and polypropylene. Furthermore, if the mechanical properties can be improved, molded products can be made thinner and lighter, so further improvements in the physical properties of polar polymers are expected.

[0023] Specific examples of polar polymers include polymers having an amide group, such as polyamide and polyamideimide. Polymers having an imide group include polyimide, polyamideimide, and polyetherimide. Polymers having a carbonyl group (ketone group) include polyetherketone and polyetheretherketone. Polymers having an ester bond include polyarylate, polycarbonate, and polyester. Polyesters include polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, and polybutylene naphthalate.

[0024] Among thermoplastic resins, it is preferable to use a crystalline polymer as the matrix. Crystalline polymers are advantageous over amorphous polymers in that they have superior hardness, elasticity, and rigidity. Among the polar polymers mentioned above, examples of crystalline polymers include polyamide, polyether ketone, polyether ether ketone, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, and polybutylene naphthalate. Among polyesters, polyarylate and polycarbonate are amorphous polymers. As the polar polymer, polyester is preferable, and polyethylene terephthalate is more preferable. Since the CO2 emissions during the production of polyethylene terephthalate are smaller than those during the production of polycarbonate, the use of polyethylene terephthalate can contribute to reducing CO2 emissions. The crystallinity of the matrix or crystalline polymer is, for example, 1 to 50%, preferably 1 to 40%. The crystallinity can be controlled by the molding conditions (temperature and pressure).

[0025] The matrix may also be a polar polymer crosslinked using a crosslinking agent. Examples of crosslinking agents include compounds that undergo a crosslinking reaction when heated, such as carbodiimide crosslinking agents, oxazoline crosslinking agents, epoxy crosslinking agents, and isocyanate crosslinking agents. The polar polymer may also be a recycled polymer, for example, obtained by recovering used polymers with reduced molecular weights and re-crosslinking the used polymers with a crosslinking agent to increase their molecular weight. Polyethylene terephthalate, which is widely produced and used, is a suitable used polymer and recycled polymer.

[0026] The carbodiimide crosslinking agent in this embodiment is a compound having at least one carbodiimide group in the molecule, and can be produced, for example, by heating an organic isocyanate in the presence of a suitable catalyst and subjecting it to a decarboxylation reaction. The carbodiimide group is represented by (-N=C=N-). In a matrix using a carbodiimide crosslinking agent, the carbodiimide group derived from the carbodiimide crosslinking agent exists as part of the polymer.

[0027] Examples of the carbodiimide crosslinking agent include diphenylcarbodiimide, dicyclohexylcarbodiimide, di-2,6-dimethylphenylcarbodiimide, diisopropylcarbodiimide, dioctyldecylcarbodiimide, di-o-toluylcarbodiimide, di-p-toluylcarbodiimide, di-p-nitrophenylcarbodiimide, di-p-aminophenylcarbodiimide, di-p-hydroxyphenylcarbodiimide, di-p-chlorophenylcarbodiimide, di-o-chlorophenylcarbodiimide, di-3,4-dichlorophenylcarbodiimide, Nylcarbodiimide, di-2,5-dichlorophenylcarbodiimide, p-phenylene-bis-o-toluylcarbodiimide, p-phenylene-bis-dicyclohexylcarbodiimide, p-phenylene-bis-di-p-chlorophenylcarbodiimide, 2,6,2',6'-tetraisopropyldiphenylcarbodiimide, hexamethylene-bis-cyclohexylcarbodiimide, ethylene-bis-diphenylcarbodiimide, ethylene-bis-di-cyclohexylcarbodiimide, N,N'-di-o-triylcarbodiimide, N,N'-di Phenylcarbodiimide, N,N'-dioctyldecylcarbodiimide, N,N'-di-2,6-dimethylphenylcarbodiimide, N-triyl-N'-cyclohexylcarbodiimide, N,N'-di-2,6-diisopropylphenylcarbodiimide, N,N'-di-2,6-di-tert-butylphenylcarbodiimide, N-toluyl-N'-phenylcarbodiimide, N,N'-di-p-nitrophenylcarbodiimide, N,N'-di-p-aminophenylcarbodiimide, N,N'-di-p-hydroxyphenylcarbodiimide, N,N'-di-cyclohexylcarbodiimide, N,N'-di-p-toluylcarbodiimide, N,N'-benzylcarbodiimide, N-octadecyl-N'-phenylcarbodiimide, N-benzyl-N'-phenylcarbodiimide, N-octadecyl-N'-tolylcarbodiimide, N-cyclohexyl-N'-tolylcarbodiimide, N-phenyl-N'-tolylcarbodiimide, N-benzyl-N'-tolylcarbodiimide, N,N'-di-o-ethylphenylcarbodiimide, N,N'-di-p-ethylphenylcarbodiimide, N,Mono- or dicarbodiimide compounds such as N'-di-o-isopropylphenylcarbodiimide, N,N'-di-p-isopropylphenylcarbodiimide, N,N'-di-o-isobutylphenylcarbodiimide, N,N'-di-p-isobutylphenylcarbodiimide, N,N'-di-2,6-diethylphenylcarbodiimide, N,N'-di-2-ethyl-6-isopropylphenylcarbodiimide, N,N'-di-2-isobutyl-6-isopropylphenylcarbodiimide, N,N'-di-2,4,6-trimethylphenylcarbodiimide, N,N'-di-2,4,6-triisopropylphenylcarbodiimide, and N,N'-di-2,4,6-triisobutylphenylcarbodiimide; Examples of suitable carbodiimides include poly(4,4'-methylenebiscyclohexylcarbodiimide), poly(1,3-cyclohexylenecarbodiimide), poly(1,4-cyclohexylenecarbodiimide), poly(4,4'-diphenylmethanecarbodiimide), poly(3,3'-dimethyl-4,4'-diphenylmethanecarbodiimide), poly(naphthylenecarbodiimide), poly(p-phenylenecarbodiimide), poly(m-phenylenecarbodiimide), poly(tolylcarbodiimide), poly(diisopropylcarbodiimide), poly(methyl-diisopropylphenylenecarbodiimide), poly(triethylphenylenecarbodiimide), and poly(triisopropylphenylenecarbodiimide).

[0028] The oxazoline crosslinking agent in this embodiment is a compound having an oxazoline group in the molecule. In particular, a polymer synthesized using a monomer containing an oxazoline compound as at least one of the raw monomers is preferred. Examples of oxazoline compounds include 2-oxazoline, 3-oxazoline, and 4-oxazoline compounds. Any of these may be used, but 2-oxazoline compounds are particularly highly reactive and have been industrially put into practical use. Examples of oxazoline compounds include 2-vinyl-2-oxazoline, 5-methyl-2-vinyl-2-oxazoline, 4,4-oxazoline, 4,4-dimethyl-2-vinyl-5,6-dihydro-4H-1,-oxazine, 4,4,6-trimethyl-2-vinyl-5,6-dihydro-4H-1,3-oxazine, 2-isopropenyl-2-oxazoline, 4,4-dimethyl-2-isopropenyl-2-oxazoline, and 4-acryloyloxymethyl-2,4-dimethyl. 4-(4-vinylphenyl)-2-oxazoline, 4-methacryloyl-oxymethyl-2,4-dimethyl-2-oxazoline, 4-methacryloyl-oxymethyl-2-phenyl-4-methyl-2-oxazoline, 2-(4-vinylphenyl)-4,4-dimethyl-2-oxazoline, 4-ethyl-4-hydroxymethyl-2-isopropenyl-2-oxazoline, 4-ethyl-4-carbethoxymethyl-2-isopropenyl-2-oxazoline, and the like, but are not limited thereto.

[0029] As the epoxy-based crosslinking agent in this embodiment, for example, a glycidyl ether compound, a glycidyl ester compound, a glycidyl amine compound, a glycidyl imide compound, an alicyclic epoxy compound, or the like can be preferably used.

[0030] Examples of the glycidyl ether compound include butyl glycidyl ether, stearyl glycidyl ether, allyl glycidyl ether, phenyl glycidyl ether, o-phenylphenyl glycidyl ether, ethylene oxide lauric alcohol glycidyl ether, ethylene oxide phenol glycidyl ether, ethylene glycol diglycidyl ether, polyethylene glycol diglycidyl ether, propylene glycol diglycidyl ether, polypropylene glycol diglycidyl ether, neopentyl glycol diglycidyl ether, and polytetramethylene glycol diglycidyl ether. Examples of suitable epoxy resins include bisphenol A diglycidyl ether epoxy resins, bisphenol F diglycidyl ether epoxy resins, and bisphenol S diglycidyl ether epoxy resins obtained by condensation reaction of bisphenols such as bisphenol A, cyclohexanedimethanol diglycidyl ether, glycerol triglycidyl ether, trimethylolpropane triglycidyl ether, pentaerythritol polyglycidyl ether, 2,2-bis-(4-hydroxyphenyl)propane, 2,2-bis-(4-hydroxyphenyl)methane, and bis(4-hydroxyphenyl)sulfone with epichlorohydrin. Among these, bisphenol A diglycidyl ether epoxy resins are preferred.

[0031] Examples of the glycidyl ester compound include benzoic acid glycidyl ester, p-toluic acid glycidyl ester, cyclohexanecarboxylic acid glycidyl ester, stearic acid glycidyl ester, lauric acid glycidyl ester, palmitic acid glycidyl ester, versatic acid glycidyl ester, oleic acid glycidyl ester, linoleic acid glycidyl ester, linolenic acid glycidyl ester, terephthalic acid diglycidyl ester, isophthalic acid diglycidyl ester, phthalic acid diglycidyl ester, naphthalenedicarboxylic acid diglycidyl ester, and the like. Examples of suitable glycidyl esters include glycidyl esters of benzoic acid, diglycidyl esters of methyl terephthalic acid, diglycidyl esters of hexahydrophthalic acid, diglycidyl esters of tetrahydrophthalic acid, diglycidyl esters of cyclohexanedicarboxylic acid, diglycidyl esters of adipic acid, diglycidyl esters of succinic acid, diglycidyl esters of sebacic acid, diglycidyl esters of dodecanedioic acid, diglycidyl esters of octadecanedicarboxylic acid, triglycidyl esters of trimellitic acid, and tetraglycidyl esters of pyromellitic acid. Of these, glycidyl esters of benzoic acid and glycidyl esters of versatic acid are preferred.

[0032] Examples of the glycidyl amine compound include tetraglycidylaminodiphenylmethane, triglycidyl-paraaminophenol, triglycidyl-metaaminophenol, diglycidyl aniline, diglycidyl toluidine, tetraglycidyl meta-xylenediamine, diglycidyl tribromoaniline, tetraglycidyl bisaminomethylcyclohexane, triglycidyl cyanurate, and triglycidyl isocyanurate. Examples of the glycidyl imide compound include N-glycidyl phthalimide, N-glycidyl-4-methylphthalimide, N-glycidyl-4,5-dimethylphthalimide, N-glycidyl-3-methylphthalimide, N-glycidyl-3,6-dimethylphthalimide, N-glycidyl-4-ethoxyphthalimide, N-glycidyl-4-chlorophthalimide, N-glycidyl-4,5-dichlorophthalimide, N-glycidyl-3,4,5,6-tetrabromophthalimide, and N-glycidyl-4-n-butyl-5- Examples of such an alkyl ester include bromophthalimide, N-glycidyl succinimide, N-glycidyl hexahydrophthalimide, N-glycidyl-1,2,3,6-tetrahydrophthalimide, N-glycidyl maleinimide, N-glycidyl-α,β-dimethylsuccinimide, N-glycidyl-α-ethylsuccinimide, N-glycidyl-α-propylsuccinimide, N-glycidyl benzamide, N-glycidyl-p-methylbenzamide, N-glycidyl naphthamide, and N-glycidyl steramide. Of these, N-glycidyl phthalimide is preferred.

[0033] Examples of the alicyclic epoxy compound include 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexylcarboxylate, bis(3,4-epoxycyclohexylmethyl)adipate, vinylcyclohexene diepoxide, N-methyl-4,5-epoxycyclohexane-1,2-dicarboxylic acid imide, N-ethyl-4,5-epoxycyclohexane-1,2-dicarboxylic acid imide, N-phenyl-4,5-epoxycyclohexane-1,2-dicarboxylic acid imide, N-naphthyl-4,5-epoxycyclohexane-1,2-dicarboxylic acid imide, and N-tolyl-3-methyl-4,5-epoxycyclohexane-1,2-dicarboxylic acid imide.

[0034] Other epoxy compounds that can be used include epoxy-modified fatty acid glycerides such as epoxidized soybean oil, epoxidized linseed oil, and epoxidized whale oil, phenol novolac epoxy resins, and cresol nosolac epoxy resins.

[0035] The isocyanate crosslinking agent used in this embodiment is not particularly limited as long as it has an isocyanate group as a functional group in the compound, and known polyisocyanate crosslinking agents can be used. Specifically, commonly used water-dispersible polyisocyanate crosslinking agents can be used. Water-dispersible polyisocyanate crosslinking agents are polyisocyanate polymers with hydrophilic groups introduced therein, and when added to water and stirred, they can be dispersed in water as fine particles.

[0036] Examples of polyisocyanates constituting the water-dispersible polyisocyanate include aliphatic isocyanates such as hexamethylene diisocyanate, trimethylhexamethylene diisocyanate, tetramethylene diisocyanate, pentamethylene diisocyanate, lysine diisocyanate, and dimer acid diisocyanate; tolylene diisocyanate, xylylene diisocyanate, diphenylmethane diisocyanate, tetramethylxylylene diisocyanate, 1,5-naphthalene diisocyanate, 1,4-naphthalene diisocyanate, 4,4'-toluidine diisocyanate, 4,4'-diphenyl ether isocyanate, (m- or p-)phenylene diisocyanate; Examples of the diisocyanate include aromatic polyisocyanates such as 4,4'-biphenylene diisocyanate, 3,3'-biphenylene diisocyanate, bis(4-isocyanatophenyl)sulfone, and isopropylidenebis(4-phenylisocyanate); and alicyclic diisocyanate compounds such as hydrogenated xylylene diisocyanate, isophorone diisocyanate, 4,4'-methylenebis(cyclohexylisocyanate), methylcyclohexane-2,4-(or -2,6-)diisocyanate, 1,3-(or 1,4-)di(isocyanatomethyl)cyclohexane, 1,4-cyclohexane diisocyanate, 1,3-cyclopentane diisocyanate, and 1,2-cyclohexane diisocyanate. As such a polyisocyanate compound, a polyisocyanate compound having an isocyanurate structure, a urethane structure, a biuret structure, an allophanate structure, a uretdione structure, a trimer structure, etc. A so-called blocked isocyanate in which an isocyanate group is blocked with an active hydrogen group may also be used.

[0037] The matrix is ​​preferably formed from one of these thermoplastic resins or a mixture of these.

[0038] <Flame retardant particles 2> The addition of flame retardant particles improves the flame retardancy of the resin composition. The shape of the flame retardant particles may be spherical, such as a perfect sphere or an oblate spheroid, polyhedral, irregular, plate-like, or scaly.

[0039] Phosphorus-based flame retardants, especially metal phosphinates, are preferred because they can efficiently impart flame retardancy to molded articles, with organic metal phosphinates being more preferred. Organic metal phosphinates have excellent hydrolysis and thermal stability, making them less susceptible to bleeding of curing agent particles due to pressure and heat during processing. The decomposition temperature of organic metal phosphinates, as measured by DSC, is preferably 250°C or higher, more preferably 300°C or higher.

[0040] The organic metal phosphinate is preferably an organic metal phosphinate represented by the following formula (1).

[0041] [ka]

[0042] In formula (1), R 1 and R 2 are each independently an alkyl group or an aryl group, M is at least one selected from the group consisting of Mg, Ca, Al, Sb, Sn, Ge, Ti, Zn, Fe, Zr, Ce, Bi, Sr, Mn, Ni, Li, K, and Na, and m is an integer of 1 to 4.

[0043] R 1 and R 2 From the viewpoint of flame retardancy, an alkyl group is preferable as M. The alkyl group may be linear or branched. From the viewpoint of flame retardancy, the alkyl group is preferably an alkyl group having 1 to 20 carbon atoms, and more preferably an alkyl group having 1 to 6 carbon atoms. Specific examples include a methyl group, an ethyl group, a propyl group, a butyl group, an isopropyl group, and a t-butyl group, with a methyl group and an ethyl group being particularly preferable. From the viewpoint of flame retardancy, the aryl group is preferably an aryl group having 1 to 20 carbon atoms, and more preferably an aryl group having 1 to 8 carbon atoms. Specific examples include a phenyl group, a xylyl group, a tolyl group, and a naphthyl group, with a phenyl group being particularly preferable. From the viewpoint of flame retardancy, M is preferably Al, Zn, or Ti, and more preferably Al.

[0044] Examples of compounds represented by formula (1) include aluminum trisdiethylphosphinate, aluminum trismethylethylphosphinate, aluminum trisdiphenylphosphinate, zinc bisdiethylphosphinate, zinc bismethylethylphosphinate, zinc bisdiphenylphosphinate, titanyl bisdiethylphosphinate, titanyl bismethylethylphosphinate, and titanyl bisdiphenylphosphinate. Aluminum trisdiethylphosphinate and aluminum trismethylethylphosphinate are preferred in that they provide a resin composition having high flame retardancy and moisture resistance. One type of organic metal phosphinate may be used alone, or two or more types may be used in combination.

[0045] In this embodiment, a nitrogen-based flame retardant may also be contained as a flame retardant. Examples of nitrogen-based flame retardants include dialkylphosphinic acid and / or its salt, melamine condensation products, reaction products of melamine and phosphoric acid, reaction products of melamine condensation products and polyphosphoric acid, ammonium polyphosphate salts, benzoguanamine, tris(hydroxyethyl)isocyanurate, allantoin, glycouril, melamine, melamine cyanurate, dicyandiamide, and guanidine. Among these, melamine cyanurate is preferred. The nitrogen-based flame retardant may be used alone or in combination with a phosphorus-based flame retardant. Furthermore, in this embodiment, both an organic metal phosphinate and a nitrogen-based flame retardant may be added.

[0046] The flame retardant particles are preferably solid at 250° C. or higher and 300° C. or lower. If the flame retardant particles are solid at 250° C. or higher, they will be solid at the kneading temperature (e.g., 250° C.) and will remain in the form of particles even after kneading, thereby exhibiting a high flame retardant effect.

[0047] Organic metal phosphinates are solid at 250°C and decompose at high temperatures without melting. The decomposition temperature of organic metal phosphinates is 300°C or higher. Melamine cyanurate is solid at 250°C and sublimes at 350-400°C without melting at high temperatures. Phosphate esters are liquid at 250°C, so they disperse within elastomer particles and do not form flame retardant particles. The melting point (freezing point) of phosphate esters is 4°C, they are liquid at 250°C, and they decompose at just under 300°C.

[0048] The particle size of the flame retardant particles is preferably 0.1 μm or more and 50 μm or less. A certain particle size is necessary for the flame retardant particles to exhibit flame retardancy. If the particle size of the flame retardant particles is smaller than 0.1 μm, the flame retardant effect may not be enhanced even if the particles are incorporated into the elastomer particles. If the particle size of the flame retardant particles exceeds 50 μm or less, impact resistance may decrease.

[0049] Examples of methods for measuring particle size include the following. Specifically, a molded article formed from the resin composition of this embodiment is subjected to pretreatments such as cross-section polishing, microtome processing, and ion milling to prepare a transverse cross-sectional sample of the molded article. The particle size of the flame retardant particles may be evaluated on the molded article, or on strands or pellets after melt kneading, which may be subjected to processes such as resin embedding. Ion milling is preferable because it provides a high level of cross-sectional smoothness and prevents particle shedding. If the temperature of the resin composition increases during processing, cooling such as cryo-treatment may be performed. Then, the resin composition is observed under the following conditions to obtain an SEM image of the cross section. It is preferable to use different magnifications for observation depending on the particle size of the flame retardant particles. For example, if the particle size is 5 μm or less, observation is preferably performed at a magnification of 10,000x, and if the particle size is greater than 5 μm, observation is preferably performed at a magnification of 1,000x. The median diameter of the flame retardant particles in a given region of the cross section of the molded article is determined by binarization and image analysis under the conditions shown below from the obtained SEM image. Similarly, particle diameters are calculated for 10 SEM images, and the average value is determined as the particle diameter of the flame retardant particles. The given region of the cross section of the molded article can be, for example, a quadrilateral region with two adjacent sides of length L and length M. Length L and length M are, for example, 5 μm or more, preferably 10 μm or more, and are, for example, 500 μm or less, for example, 100 μm or less. Length L and length M may be the same or different, and the ratio of length L to length M may be 0.5 to 2. The binarization and image analysis of the SEM image are performed using the image processing software ImageJ (available from https: / / imagej.nih.gov / ij / ) from the National Institutes of Health.

[0050] [conditions] {device name} Schottky field emission scanning electron microscope JSM-F100 (manufactured by JEOL Ltd.) {Acceleration voltage} 3kV {magnification} 10,000x or 1,000x {Measurement range} 12.8μm x 9.6μm (10,000x magnification) or 128μm x 96μm (1,000x magnification) {Number of ratings} 10 areas / sample {Binarization and Image Analysis} ImageJ {Binarization method} MaxEntropy (Adjust the threshold value as appropriate so that flame retardant particles can be separated by binarization. If binarization is not possible using image processing software, prepare an image in which only the flame retardant particles are visually filled in using paint software, etc.) {Particle size calculation method} Median diameter (50% particle size)

[0051] The flame retardant particles may have a base made of an organic or inorganic material as a main component and a surface layer made of an organic or inorganic material covering the base. The thickness of the surface layer is, for example, 100 nm or less, and preferably 10 nm or less.

[0052] The flame retardant particles preferably have a substrate surface-treated with a surface treatment agent such as a coupling agent or fatty acid. Pre-treated commercial products may be used for the surface-treated particles, or a separate surface treatment process may be included during the production of the resin composition. The amount of surface treatment agent used can be calculated from the specific surface area of ​​the particles to be treated and the minimum coverage area of ​​the surface treatment agent. When using particles with small particle diameters, the specific surface area of ​​the particles increases, inevitably resulting in a larger amount of surface treatment agent. For this reason, the amount of surface treatment agent used varies, with a typical addition amount being approximately 0.5 wt% to 5 wt% relative to the particles. Treatment methods include known methods such as dry treatment methods such as the integral blend method and wet treatment methods using an aqueous solution of the surface treatment agent. The surface layer formed by the surface treatment constitutes part of the particle.

[0053] Examples of surface treatment agents include silane coupling agents such as vinyltrimethoxysilane, vinyltriethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropyltriethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3-methacryloxypropyltriethoxysilane, 3-acryloxypropyltrimethoxysilane, 3-aminopropyltrimethoxysilane, tris-(trimethoxysilylpropyl)isocyanurate, and 3-trimethoxysilylpropylsuccinic anhydride. Titanate-based and aluminate-based coupling agents may also be used. Fatty acids include lauric acid, stearic acid, and oleic acid. Among these, silane coupling agents are preferred. These surface treatment agents may be used alone or in combination.

[0054] <Elastomer particles 3, elastomer material> The elastomer material that constitutes the elastomer particles 3 improves impact strength. The elastomer material is a copolymer consisting of a combination of hard segments that act as crosslinking points and soft segments that exhibit rubber elasticity, and is a thermoplastic elastomer that has the properties of both plastic and rubber.

[0055] Examples of elastomer materials include urethane elastomers, ester elastomers, amide elastomers, acrylic elastomers, olefin elastomers, and styrene elastomers.

[0056] Examples of urethane elastomers include elastomers in which the hard segment is polyurethane containing urethane groups and the soft segment is polyester containing ester bonds or polyether containing ether bonds. Note that the urethane groups and ester bonds have polarity.

[0057] Examples of ester-based elastomers include elastomers in which the hard segment is a polyester containing an ester bond and the soft segment is a polyester containing an ester bond or a polyether containing an ether bond. Note that the ester bond has polarity.

[0058] Examples of amide elastomers include elastomers in which the hard segment is a polyamide containing an amide group and the soft segment is a polyester containing an ester bond or a polyether containing an ether bond. Note that the amide group and the ester bond have polarity.

[0059] Examples of acrylic elastomers include elastomers in which the hard segment is polymethyl methacrylate, a polymer of methyl methacrylate having an ester bond, and the soft segment is a copolymer of butyl acrylate, 2-ethylhexyl acrylate, or the like, having an ester bond. Other examples include elastomers in which the hard segment is a polyolefin such as polyethylene, and the soft segment is polymethyl methacrylate, a polymer of methyl methacrylate having an ester bond. The ester bond has polarity.

[0060] Examples of olefin-based elastomers include elastomers in which the hard segment is a polyolefin such as polypropylene or polyethylene, and the soft segment is an ethylene propylene rubber or ethylene propylene diene rubber.

[0061] Examples of styrene-based elastomers include elastomers in which the hard segment is polystyrene and the soft segment is butadiene, isoprene, ethylene, or the like.

[0062] When the matrix resin is a polar polymer, the elastomer material preferably has a polar group from the viewpoint of affinity with the matrix. Examples of the polar group that the elastomer material has include a urethane group, an amide group, and an ester bond. In particular, the elastomer material preferably has an ester bond in either or both of the hard segment and the soft segment.

[0063] The polar group such as an ester bond in the elastomer material provides the elastomer material with heat resistance, making it possible to melt-knead it with polar polymers, particularly polar polymers with high heat resistance. Furthermore, the mechanical properties of the elastomer material with an ester bond are relatively high, contributing to the improvement of physical properties, which is the objective of the present invention.

[0064] The elastomer material preferably has a high affinity with the flame retardant particles so that the flame retardant particles can be incorporated into the elastomer material. To enhance the affinity between the elastomer material and the flame retardant particles, functional groups may be added to the elastomer material, or the elastomer material may be subjected to an acid-modifying treatment using maleic anhydride or the like. Examples of such elastomer materials include styrene-based elastomers with acid-modified groups and olefin-based elastomers with acid-modified groups.

[0065] The glass transition temperature of the elastomer material is lower than room temperature, so that it functions as an elastomer at room temperature. The glass transition temperature of the elastomer material is preferably lower than 0°C, and more preferably -20°C or lower.

[0066] Impact strength is improved by melt-kneading the elastomer material in a molten state with a thermoplastic resin matrix and dispersing the elastomer particles 3 in the matrix 1. Therefore, to enable melt-kneading with the matrix, the melting point of the elastomer material is preferably lower than the heating temperature (molding temperature) of the resin composition. The heating temperature of the resin composition is the temperature at which the thermoplastic polymer matrix melts, and is higher than the glass transition point of the matrix. If the matrix is ​​a crystalline polymer, it is preferably higher than the melting point of the matrix. Therefore, the melting point of the elastomer material is preferably lower than the melting point of the matrix. Although the melting point of the elastomer material may be higher than the melting point of the matrix, this may cause thermal degradation, such as a decrease in the molecular weight of the matrix due to heating the matrix to melt the elastomer material. When the matrix is ​​a crystalline polymer, the melting point of the elastomer material may be higher than the glass transition point of the matrix. When the matrix is ​​an amorphous polymer, the melting point of the matrix is ​​not defined, so the melting point of the elastomer material is preferably lower than the glass transition point of the matrix.

[0067] The glass transition point of the matrix is ​​preferably 50°C or higher to ensure strength during use, and also preferably 200°C or lower in consideration of processability. The melting point of the matrix is ​​preferably 100°C or higher, and preferably 200°C or higher in consideration of heat resistance, and preferably 300°C or lower in consideration of processability. The melting point of the elastomer material is preferably 50°C or higher to ensure strength during use, and also preferably 300°C or lower, and preferably 200°C or lower in consideration of processability.

[0068] The elastomer material has rubber elasticity, i.e., flexibility, and therefore contributes to improving the impact strength of the matrix. As shown in Figure 2, when an impact is applied to a molded article obtained by molding the resin composition of this embodiment, the matrix 1 is oriented around the elastomer particles 3, forming crazes 5, which can more efficiently absorb the impact.

[0069] Furthermore, as described above, it is preferable that a large number of elastomer particles 3 are dispersed because the generation of crazes 5 at the center of the elastomer particles 3 absorbs impact energy and impact strength. For this reason, the particle diameter of the elastomer particles 3 is preferably 20 μm or less, more preferably 10 μm or less. In order for the elastomer particles 3 to function efficiently mechanically, the particle diameter of the elastomer particles 3 is preferably 0.1 μm or more, more preferably 0.5 μm or more. The elastomer particles 3 are typically formed by dispersing and mixing them by melt-kneading, as described below, and the particle diameter of such elastomer particles 3 can be referred to as the dispersed particle diameter or dispersed particle size.

[0070] The particle size of the elastomer particles 3 dispersed in the matrix 1 can be calculated from cross-sectional observation of the resin molded product using a method similar to that used to measure the particle size of the flame retardant particles 2. Specifically, a transverse cross-sectional sample of the molded product is prepared using the same method as used to measure the particle size of the flame retardant particles 2. Then, an SEM image of the cross section is obtained by SEM observation under the same conditions as used to measure the particle size of the flame retardant particles 2. Similarly to the method used to measure the particle size of the flame retardant particles 2, the SEM image is binarized and image analyzed to determine the median diameter of the elastomer particles 3 in an arbitrary area of ​​the cross section of the molded product, which is the particle size of the elastomer particles 3. The arbitrary area of ​​the cross section of the molded product can be, for example, a quadrilateral region with the lengths L and M of two adjacent sides. The lengths L and M are, for example, 5 μm or more, preferably 10 μm or more, and for example, 500 μm or less, for example, 100 μm or less. The length L and the length M may be the same or different, and the ratio of the length L to the length M may be 0.5 to 2.

[0071] <Filler 4> In this embodiment, it is also preferable to add a filler in order to obtain excellent mechanical properties, such as flexural modulus and impact strength.

[0072] Fig. 3 is a schematic diagram illustrating the morphology of the resin composition of this embodiment when it contains a filler. In Fig. 3, 1 is a matrix, 2 is flame retardant particles, 3 is elastomer particles, and 4 is a filler. As shown in Fig. 3, a resin composition 30 of this embodiment contains a matrix 1, a plurality of flame retardant particles 2, a plurality of elastomer particles 3, and a plurality of fillers 4.

[0073] The main component of the multiple fillers 4 is an inorganic material. A filler 4 primarily composed of an inorganic material can be referred to as an inorganic filler. Because the minor diameter of the multiple fillers 4 of interest is 0.1 μm or more, the resin composition 30 contains multiple fillers 4 having a minor diameter of 0.1 μm or more. The resin composition 30 may or may not contain multiple fillers having a minor diameter of less than 0.1 μm. The minor diameter of the fillers 4 of interest is 0.1 μm or more because particles having a minor diameter of 0.1 μm or more contribute significantly to controlling mechanical properties. The minor diameter of needle-shaped or fibrous fillers is the needle diameter or fiber diameter.

[0074] A plurality of fillers 4 and a plurality of elastomer particles 3 are dispersed in the matrix 1. It is preferable that the plurality of fillers 4 and the plurality of elastomer particles 3 are each dispersed independently in the matrix 1, and this dispersion structure is referred to as an independent dispersion structure. As shown in FIG. 3 , in the resin composition 30 of this embodiment, the fillers 4 and the elastomer particles 3 have an independent dispersion structure in which they are each dispersed independently in the matrix 1.

[0075] In the resin composition 30 having an independently dispersed structure, the first filler 4a, among the plurality of fillers 4, that is closest to the first elastomer particle 3a in the observed cross section is separated from the first elastomer particle 3a via the matrix 1. In the resin composition 30 having an independently dispersed structure, the first elastomer particle 3a is separated from the first filler 4a, among the plurality of fillers 4, that is closest to the first elastomer particle 3a in the observed cross section via the matrix 1. In other words, the first filler 4a is not in contact with the first elastomer particle 3a, and the matrix 1 is interposed between the first filler 4a and the first elastomer particle 3a. In other words, the first filler 4a and the first elastomer particle 3a are separated from each other by the matrix 1.

[0076] Furthermore, in the resin composition 30 having an independently dispersed structure, the second filler 4b, among the plurality of fillers 4, that is closest to the second elastomer particle 3b in the observed cross section is separated from the second elastomer particle 3b via the matrix 1. In the resin composition 30 having an independently dispersed structure, the second elastomer particle 3b is separated from the second filler 4b, among the plurality of fillers 4, that is closest to the second elastomer particle 3b in the observed cross section via the matrix 1. In other words, the second filler 4b is not in contact with the second elastomer particle 3b, and the matrix 1 is interposed between the second filler 4b and the second elastomer particle 3b. In other words, the second filler 4b and the second elastomer particle 3b are separated from each other by the matrix 1.

[0077] The resin composition of this embodiment has an independent dispersion structure as shown in FIG. 3, and thus can achieve excellent mechanical properties, such as flexural modulus and impact strength.

[0078] The distance between the first filler 4a and the second filler 4b is preferably 20 μm or less, and more preferably 10 μm or less. In this embodiment, the first filler 4a and the second filler 4b, which are present in close proximity to each other in this manner, preferably have an independent dispersion structure.

[0079] The distance between the first filler 4a and the first elastomer particle 3a is preferably 20 μm or less, and also preferably 10 μm or less. The distance between the second filler 4b and the second elastomer particle 3b is preferably 20 μm or less, and also preferably 10 μm or less. As such, the short distance between the nearest filler 4 and the nearest elastomer particle 3 can provide excellent mechanical properties. The distance between the first filler 4a and the first elastomer particle 3a is, for example, 10 nm or more, and may be 0.1 μm or more. The distance between the second filler 4b and the second elastomer particle 3b is, for example, 10 nm or more, and may be 0.1 μm or more.

[0080] 10 of the observed cross section of the resin composition 30 2 μm 2 Over 130 2 μm 2 The Z number % of 10 or more fillers 4 in the following area range are separated from the plurality of elastomer particles 3 via the matrix 1. 2 Over 130 2 μm 2 In the following area range, 10 or more fillers 4 are present in the matrix phase 1 at a percentage by number Z. Z (number %) is, for example, a majority of 50% by number or more, preferably 70% by number or more, more preferably 80% by number or more, and even more preferably 90% by number or more.

[0081] 10 of the observed cross section of the resin composition 30 described above 2 μm 2 Over 130 2 μm 2 The following area range preferably includes the first elastomer particles 3a, the second elastomer particles 3b, the first flame retardant particles, the second flame retardant particles, the first filler 4a, and the second filler 4b. 2 μm 2 Over 130 2 μm 2The occupancy rate of the matrix 1 in the following area range is preferably 30 area % or more and 90 area % or less. 2 μm 2 Over 130 2 μm 2 The occupancy rate of the plurality of flame retardant particles 2 in the following area range is preferably 1 area % or more and 50 area % or less. 2 μm 2 Over 130 2 μm 2 The occupancy rate within the following area range is preferably 1 area % or more and 50 area % or less of the elastomer material constituting the plurality of elastomer particles 3. 2 μm 2 Over 130 2 μm 2 The occupancy rate within the following area range is preferably 1 area % or more and 50 area % or less of the plurality of fillers 4. In addition, it is preferable that the matrix 1 occupies 30 area % or more of the region 1 μm from the outer periphery of the filler 4.

[0082] 100 in resin composition 10 3 μm 3 More than 1mm 3 In the composition in the following volume range, it is preferable that the matrix 1 is 30 mass % or more and 90 mass % or less. 3 μm 3 More than 1mm 3 In the composition in the following volume range, the plurality of flame retardant particles 2 is preferably 1% by mass or more and 50% by mass or less in the resin composition 10. 3 μm 3 More than 1mm 3 In the composition in the following volume range, the elastomer material constituting the plurality of elastomer particles 3 is preferably 1% by mass or more and 50% by mass or less. 3 μm 3 More than 1mm 3The composition in the following volume range preferably contains 1% by mass or more and 50% by mass or less of the plurality of fillers 4. This volume range preferably includes the above-mentioned first elastomer particles 3a, second elastomer particles 3b, the first flame retardant particles, the second flame retardant particles, the first filler 4a, and the second filler 4b.

[0083] The shape of the filler may be spherical, such as a perfect sphere or an oblate spheroid, polyhedral, irregular, plate-like, scale-like, needle-like, fibrous, etc. The length of the needle-like or fibrous filler is, for example, 100 μm or less, preferably 30 μm or less, and more preferably 10 μm or less.

[0084] The filler primarily composed of an inorganic material is not particularly limited, and examples thereof include mica, glass fiber, glass spheres, zinc oxide, titanium oxide (titania), zirconium oxide (zirconia), hafnium oxide (hafnia), zinc titanate, magnesium titanate, strontium titanate, calcium titanate, calcium zirconate, calcium carbonate, clays, talc, silicon oxide (silica), wollastonite, forsterite, zeolite, diatomaceous earth, silica sand, fly ash, pumice powder, slate powder, aluminum oxide (alumina), alumina white, aluminum sulfate, carbon fiber, carbon nanotubes, metal fiber, barium sulfate, calcium sulfate, molybdenum disulfide, shirasu balloons, and fly ash balloons. The first filler 4a and the second filler 4b preferably contain glass fiber, silica, or calcium carbonate.

[0085] The filler may have a base made of an inorganic material that is the main component of the filler, and a surface layer made of an organic or inorganic material that covers the base. The thickness of the surface layer is, for example, 100 nm or less, preferably 10 nm or less. In fillers whose main component is an inorganic material, the volume occupied by the inorganic material is larger than the volume occupied by the organic material, preferably 90 volume % or more.

[0086] The minor axis of the independently dispersed filler 4 is, for example, 10 μm or less, preferably 5 μm or less, and more preferably 2 μm or less. If the minor axis of the filler 4 is 10 μm or less, the decrease in impact strength due to the addition of the filler 4 can be effectively suppressed. Furthermore, if the minor axis is 0.2 μm or more, the filler 4 can be effectively finely dispersed in the matrix 1, thereby suppressing the decrease in impact strength. Therefore, the minor axis of the filler 4 is preferably 0.2 μm or more and 10 μm or less, more preferably 0.2 μm or more and 5 μm or less, and even more preferably 0.2 μm or more and 2 μm or less. A filler having a minor axis of 2 μm or more that may be contained in the plurality of fillers 4 is preferably separated via the matrix 1 from the elastomer particle 3 that is closest to the filler having a minor axis of 2 μm or more. Therefore, at least one of the first filler 4a and the second filler 4b described above may have a minor axis of 2 μm or more. The resin composition 10 may contain filler 4 having a minor axis exceeding 10 μm. The minor axis of filler 4 having a minor axis exceeding 10 μm is preferably 100 μm or less, more preferably 50 μm or less, and even more preferably 30 μm or less.

[0087] The minor axis of the filler 4 dispersed in the matrix 1 can be calculated from cross-sectional observation of the resin molded product using a method similar to that for measuring the particle diameter of the flame retardant particles 2. Specifically, a horizontal cross-sectional sample of the molded product is prepared using the same method for measuring the particle diameter of the flame retardant particles 2. Then, an SEM observation is performed under the same conditions as in the method for measuring the particle diameter of the flame retardant particles 2, and an SEM image of the cross section is obtained. Similarly to the method for measuring the particle diameter of the flame retardant particles 2, the SEM image is binarized and image analyzed to determine the median diameter of the filler 4 in an arbitrary area range of the cross section of the molded product as the minor axis of the filler 4. The arbitrary area range of the cross section of the molded product can be, for example, a quadrilateral region with lengths L and M of two adjacent sides. Length L and length M are, for example, 5 μm or more, preferably 10 μm or more, and, for example, 500 μm or less, for example, 100 μm or less. Length L and length M may be the same or different, and the ratio of length L to length M may be 0.5 to 2.

[0088] The filler is preferably a substrate whose surface has been treated with a surface treatment agent such as a coupling agent, a fatty acid, etc. Details of the surface treatment are as described for the surface treatment of the flame retardant particles.

[0089] <Composition ratio of each component> The matrix 1 acts as a matrix for dispersing the elastomer particles 3 incorporating the flame retardant particles 2. The resin composition 10 of this embodiment can achieve flame retardancy and mechanical properties superior to those of the matrix 1 due to the dispersion of the elastomer particles 3 incorporating the flame retardant particles 2. Therefore, the content of the matrix 1 is, for example, 30% by mass or more, preferably 40% by mass or more, and more preferably 50% by mass or more, relative to the total amount of the resin composition. The content of the matrix 1 is, for example, 90% by mass or less, preferably 80% by mass or less, and more preferably 70% by mass or less, relative to the total amount of the resin composition. The composition ratio in the resin composition can be obtained by thermogravimetric analysis (TGA).

[0090] The composition ratio of the flame retardant particles 2 to the elastomer material can be appropriately adjusted depending on the required flame retardancy and mechanical properties, as long as it does not deviate from the preferred composition ratio range of the matrix 1. Note that a higher content of the flame retardant particles 2 results in higher flame retardancy, while a higher content of the elastomer material results in higher impact strength. Therefore, the content of the flame retardant particles 2 is, for example, 1% by mass or more, preferably 5% by mass or more, and preferably 10% by mass or more, relative to the total amount of the composition. The content of the flame retardant particles 2 is, for example, 50% by mass or less, preferably 40% by mass or less, and more preferably 30% by mass or less, relative to the total amount of the composition. The content of the elastomer material is, for example, 1% by mass or more, preferably 5% by mass or more, and preferably 10% by mass or more, relative to the total amount of the composition. The content of the elastomer material is, for example, 50% by mass or less, preferably 40% by mass or less, and preferably 30% by mass or less, relative to the total amount of the composition. The content of the matrix 1 is preferably greater than the content of the flame retardant particles 2 and the content of the elastomer material. The content of the flame retardant particles 2 is, for example, 1 / 5 or more and 5 or less, or 1 / 4 or more and 4 or less, of the content of the elastomer material. The content of the flame retardant particles 2 can be 1 or more times the content of the elastomer material.

[0091] In the resin composition 10 of this embodiment, it is preferable that composite particles having a core-shell structure of flame retardant particles 2 and elastomer particles 3 are ubiquitously present in the matrix 1 over a wide volume range of the entire resin composition 10. In such a case, the composition ratio of the matrix, the flame retardant particles, and the elastomer material in the entire resin composition 10 and the ratio of the elastomer particles in the resin composition 10 to the total weight of the matrix 1 are preferably 100% or more. 3 μm 3 More than 1mm 3 The compositions in the following moderately wide volume ranges are generally consistent. 3 μm 3 More than 1mm 3 The composition in the following volume range can be approximated by the composition ratio relative to the total amount of the resin composition described above. 3If it is confirmed that the independently dispersed structures are ubiquitous over a wide volume range exceeding 1 mm 3 A wide volume range (e.g., 10 to 100 mm 3 Thermogravimetric analysis (TGA) can be performed on the resin composition 10 in the volume range of 100 3 μm 3 More than 1mm 3 The composition can be in the following volume ranges:

[0092] In addition, 100 3 μm 3 More than 1mm 3 The volume ratios within the following moderately broad volume ranges vary depending on the density of each component, but the following ranges are preferred: the volume ratio of matrix 1 is, for example, 35% by volume or more and, for example, 92% by volume or less; the volume ratio of flame retardant particles 2 is, for example, 2% by volume or more and, for example, 33% by volume or less; and the volume ratio of elastomer material is, for example, 7% by volume or more and, for example, 58% by volume or less.

[0093] <ΔHSP value> The affinity between two components is correlated with the solubility parameter. Specifically, the affinity between two components can be controlled by the difference in HSP values ​​(ΔHSP value) between the two components, which is calculated from the Hansen solubility parameter (HSP value). When the ΔHSP value between two components is small, the affinity between them is high and they tend to be attracted to each other. On the other hand, when the ΔHSP value between two components is large, the affinity between them is low and they tend to be independent.

[0094] The HSP value is the energy δd (MPa) due to the dispersion force between molecules. 1 / 2 ), the energy due to intermolecular dipole interactions δp (MPa 1 / 2 ), and the energy due to intermolecular hydrogen bonds δh (MPa 1 / 2 ) and the HSP value is obtained as the vector sum of these three energies. The vector difference of the HSP value between two components is called ΔHSP and can be calculated using the following formula (1).

[0095] ΔHSP value = {4(δdA - δdB) 2 +(δpA-δpB) 2 +(δhA-δhB) 2} 1 / 2 ···(1)

[0096] The HSP values ​​of many substances have been calculated by Hansen and his successors and are listed in Polymer Handbook (fourth edition), VII-698-711, and Industrial Solvents Handbook by Wesley L. Archer. HSP values ​​can also be calculated using software such as Hansen Solubility Parameter in Practice (HSPiP, Charles M. Hansen URL: http: / / www.hansen-solubility.com / ).

[0097] The ΔHSP values ​​described in this embodiment were calculated using the database-attached calculation software "HSPiP" 5th Edition 5.4.01 developed and sold by the Hansen Group, by inputting the chemical structural formula of the compound.

[0098] To incorporate flame retardant particles into elastomer materials, it is preferable to control the affinity between the surface of the flame retardant particles and the elastomer material. If the ΔHSP values ​​of the two are small, they are easily attracted to each other, forming a core-shell structure as shown in Figure 1(a), which results in excellent flame retardancy and impact strength. On the other hand, if the ΔHSP values ​​of the two are large, they tend to disperse independently in the matrix, forming an independently dispersed structure as shown in Figure 1(b).

[0099] The inventors calculated the ΔHSP value of the flame retardant particle surface and the elastomer material and found that the affinity differs depending on the combination. That is, by appropriately selecting the combination of the flame retardant particle surface (or the surface treatment agent if the flame retardant particles are surface-treated) and the elastomer material, the elastomer material forms a core-shell structure in the matrix, making it possible to obtain excellent flame retardancy and impact strength.

[0100] In order for the flame retardant particles and elastomer to form a core-shell structure, the ΔHSP value of the surface of the flame retardant particles and the elastomer material must be, for example, 7.0 MPa. 1 / 2 Preferably, it is 6.7 MPa or less. 1 / 2 The ΔHSP value of the matrix and the elastomer material is preferably 6.0 MPa or less. 1 / 2 Larger, 6.7MPa 1 / 2 Preferably, it is 7.0 MPa or more. 1 / 2 It is more preferable that the ΔHSP value of the matrix and the elastomer material is 15.0 MPa or more. 1 / 2 It may be less than 10.0 MPa 1 / 2 It may be the following:

[0101] Furthermore, when a resin composition contains a filler, it is preferable to control the affinity between the filler surface and the elastomer material in order to independently disperse the filler and elastomer particles in the matrix. If the ΔHSP values ​​of both are large, they tend to be independent in the matrix, forming an independently dispersed structure as shown in Figure 3, which makes it possible to obtain excellent mechanical properties.

[0102] The inventors calculated the ΔHSP values ​​of the filler surface and the elastomer material and found that the affinity differs depending on the combination. That is, by appropriately selecting the combination of the filler surface (or the surface treatment agent if the filler is surface-treated) and the elastomer material, the elastomer material can be dispersed in a particulate form in the matrix. This makes it possible to form an independently dispersed structure of the filler and elastomer particles in the matrix, resulting in excellent mechanical properties.

[0103] In order for the filler and elastomer particles to form an independent dispersion structure, the ΔHSP value of the filler surface and the elastomer material must be, for example, 6.5 MPa. 1 / 2 Larger than 7.0 MPa 1 / 2 Preferably, it is 7.6 MPa or more. 1 / 2 It is more preferable that the ΔHSP value of the surface of the filler and the elastomer material is 15.0 MPa or more. 1 / 2 It may be less than 10.0 MPa 1 / 2 The ΔHSP value of the matrix and the elastomer material may be, for example, 6.0 MPa or less. 1 / 2 Larger, 6.7MPa 1 / 2 Preferably, it is 7.0 MPa or more. 1 / 2 The ΔHSP value of the matrix and the elastomer material is more preferably 15.0 MPa or more. 1 / 2 It may be less than 10.0 MPa 1 / 2 The ΔHSP value of the matrix and the filler surface may be, for example, 7.0 MPa or less. 1 / 2 or more, and 9.0 MPa 1 / 2 It is preferable that the pressure is 11.0 MPa or more. 1 / 2 It is more preferable that the ΔHSP value of the matrix and filler surface is 20.0 MPa or more. 1 / 2 It may be less than 15.0 MPa 1 / 2 It may be the following:

[0104] <Other ingredients> The resin composition of this embodiment may contain various other additives as needed. The type of additive is not particularly limited as long as it is one commonly used in compounding thermoplastic resins and thermoplastic elastomer materials. Examples of additives that improve functionality include waxes, lubricants and release agents such as various fatty acids, fatty acid amides, fatty acid esters, and metal salts of fatty acids; various antistatic agents; friction improvers such as fatty acid esters, polyolefins, olefin copolymer elastomers, and polysiloxanes; decomposition inhibitors such as polyamide resins and acrylamide polymers; amide compounds; amino-substituted triazine compounds and their derivatives; urea and its derivatives; hydrazine derivatives; imidazole compounds; imide compounds; and epoxy compounds; and formic acid scavengers such as melamine and alkali metal hydroxides and carbonates. Examples of additives that improve long-term stability include ultraviolet absorbers such as benzotriazole compounds, benzophenone compounds, and phenyl salicylate compounds; hindered amine light stabilizers; and hindered phenol antioxidants. One or more of the above additives may be used in combination.

[0105] The resin composition of the present embodiment may contain at least one of a metal material containing a transition metal element, a compound material containing a transition metal element, a metal material containing a typical metal element, and a compound material containing a typical metal element, which are different from the inorganic material that is the main component of the filler 4 described above.

[0106] Examples of transition metal elements include titanium (Ti), chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), zirconium (Zr), niobium (Nb), molybdenum (Mo), hafnium (Hf), tantalum (Ta), tungsten (W), palladium (Pd), platinum (Pt), silver (Ag), and gold (Au). Examples of typical metal elements include sodium (Na), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), zinc (Zn), aluminum (Al), gallium (Ga), germanium (Ge), indium (In), tin (Sn), and antimony (Sb). Silicon (Si) and arsenic (As) can be classified as semimetals along with germanium (Ge) and antimony (Sb). However, silicon (Si) and arsenic (As) are treated as nonmetallic elements here. Metallic materials are metals or alloys, and metallic compounds, which are compounds containing metallic elements, include, for example, oxides, nitrides, carbides, inorganic acid salts, and organic acid salts of metallic elements. Metallic compounds may be composite compounds containing multiple transition metal elements, multiple typical metal elements, or transition metal elements and typical metal elements. Compounds are classified into inorganic compounds and organic compounds, and organic compounds, which are metallic compounds, i.e., organometallic compounds, are compounds that contain a bond between carbon and a metallic element. Among these, inorganic compounds can also be used as the inorganic material that is the main component of the filler. Titanium oxide (titania), zirconium oxide (zirconia), hafnium oxide (hafnia), zinc titanate, magnesium titanate, strontium titanate, calcium titanate, calcium zirconate, and other inorganic materials listed as the main component of filler 4 contain transition metal elements, and some of these are composite compounds containing transition metal elements and typical metal elements. Many transition metal compounds have a high dielectric constant (dielectric constant of 10 or greater). By incorporating such a high-dielectric-constant material into a resin composition, the dielectric constant of a resin composition containing matrix 1, which typically has a low dielectric constant (dielectric constant less than 10), can be increased, thereby improving the radio wave shielding properties by utilizing dielectric loss. Even when a resin composition contains a metal material, the electrical conductivity of the metal material can be used to improve radio wave shielding properties.

[0107] The materials containing the transition metal elements or typical metal elements listed here may be fillers with a minor axis of 0.1 μm or more dispersed in matrix 1, or may be particles with a minor axis of less than 0.1 μm. The materials containing the transition metal elements or typical metal elements listed here may form a core-shell structure with the elastomer, or may be independently dispersed. Alternatively, the materials containing the transition metal elements or typical metal elements listed here may be dissolved in matrix 1 or the elastomer.

[0108] The content of the material containing the transition metal element or typical metal element listed here is preferably less than the content of the elastomer material constituting the matrix 1 , the flame retardant particles 2 , the filler 4 , and the elastomer particles 3 .

[0109] When the content of a specific metal element differs between the matrix 1 and the elastomer material, obtaining a distribution image (mapping image) of the metal element makes it easy to distinguish between the matrix 1 and the elastomer material in the observation image. For example, aluminum (Al), germanium (Ge), antimony (Sb), or titanium (Ti) may be contained in a compound that serves as a polymerization catalyst when polymerizing a thermoplastic resin, and may be dissolved or dispersed in the matrix 1. Alternatively, a material containing a transition metal element or a typical metal element may be contained in a compound that serves as a pigment for coloring a resin composition, and may be dispersed in the matrix 1. Alternatively, the multiple fillers 4 may include, for example, a filler primarily composed of calcium carbonate and a filler primarily composed of titanium oxide, with both of these elements dispersed independently.

[0110] <Proportion of independently dispersed filler 4> The proportion of the independently dispersed filler 4 can be calculated from the cross-sectional observation of the resin molded body. 2 μm 2 Over 130 2 μm 2A number of fillers 4 are extracted from the following area range. The number of fillers 4 extracted (A) may be 10 or more, but may be 100 or less. Among the A number of extracted fillers 4, the number of filler 4 particles (B) that are separated from the nearest elastomer particle 3 via the matrix 1 is counted. The proportion of independently dispersed fillers can be calculated from the ratio of the number of particles (B) to the number of extracted fillers 4 (A).

[0111] Specifically, a cross-sectional sample of the molded article is prepared in the same manner as in the method for measuring the particle size of the flame retardant particles 2. Then, an SEM observation is performed under the same conditions as in the method for measuring the particle size of the flame retardant particles 2, and an SEM image of the cross section is obtained. From the obtained SEM image, A (10 or more) fillers 4 are counted using binarization and image analysis, similar to the method for measuring the particle size of the flame retardant particles 2, and among them, the number (B) of fillers 4 that are separated from the nearest elastomer particle 3 is counted. The proportion of independently dispersed fillers 4 is then calculated using the following equation (2):

[0112] Proportion of independently dispersed filler 4 X (number%) = (B / A) × 100 (number%) (2) X (% by number) is, for example, a majority of 50% by number or more, preferably 70% by number or more, more preferably 80% by number or more, and even more preferably 90% by number or more.

[0113] <Proportion of independently dispersed elastomer particles 3> The proportion of independently dispersed elastomer particles 3 can be calculated from a cross-sectional observation of the resin molded product. 2 μm 2 Over 130 2 μm 2C elastomer particles 3 are extracted from the following area range. The number of extracted elastomer particles 3 (C) may be 10 or more, but may be 100 or less. Among the extracted C elastomer particles 3, the number of elastomer particles 3 (D) that are separated from the nearest filler 4 via a matrix 1 is counted. The proportion of independently dispersed elastomer particles 3 can be determined from the ratio of the number of particles (D) to the number of extracted elastomer particles 3 (C).

[0114] Specifically, a cross-sectional sample of the molded article is prepared in the same manner as in the method for measuring the particle size of the elastomer particles 3. Then, an SEM observation is performed under the same conditions as in the method for measuring the particle size of the elastomer particles 3, and an SEM image of the cross section is obtained. From the obtained SEM image, C (10 or more) elastomer particles 3 are counted by binarization and image analysis in the same manner as in the method for measuring the particle size of the elastomer particles 3, and the number (D) of elastomer particles 3 separated from the filler 4 is counted. The proportion of independently dispersed elastomer particles 3 is then calculated using the following equation (3):

[0115] Proportion Y of independently dispersed elastomer particles 3 (number%) = (D / C) × 100 (number%) (3) Y (% by number) is, for example, 50% by number or more, preferably 70% by number or more, more preferably 80% by number or more, and even more preferably 90% by number or more.

[0116] <Area occupancy rate> 10 of the observed cross section of the resin composition 10 2 μm 2 Over 130 2 μm 2Within the area range below, the matrix 1 occupies, for example, 30 area% or more, for example, 90 area% or less, and preferably 70 area% or less. Within this area range, the elastomer material occupies, for example, 1 area% or more, preferably 5 area% or more, for example, 50 area% or less, and preferably 30 area% or less. Within this area range, the flame retardant particles 2 occupy, for example, 1 area% or more, preferably 5 area% or more, for example, 50 mass% or less, and preferably 30 area% or less. This area range preferably includes the first elastomer particles 3a, second elastomer particles 3b, first flame retardant particles 2a, and second flame retardant particles 2b.

[0117] 10 of the observed cross section of the resin composition 10 2 μm 2 Over 130 2 μm 2 The occupancy rates of various materials within the following area ranges can be calculated from cross-sectional observation of a molded product of the resin composition 10. Specifically, a transverse cross-sectional sample of the molded product is prepared using the same method as for measuring the particle diameter of the flame retardant particles 2. Then, SEM observation is performed under the same conditions as for measuring the particle diameter of the flame retardant particles 2, and an SEM image of the cross section is obtained. In the SEM image taken with a scanning electron microscope, the flame retardant particles 2, matrix 1, and elastomer material can be identified based on their shape, size, and contrast. It is desirable to distinguish the flame retardant particles 2, matrix 1, and elastomer material by mapping the elements contained in each material. Energy dispersive X-ray spectroscopy (EDS) can be used for elemental mapping. SEM-EDS, which combines the above-mentioned SEM and elemental analysis, is preferred. The obtained image is then analyzed using a small, general-purpose image processing and analysis system (LUZEX; Nicole Co., Ltd.). The obtained image is binarized using a predetermined threshold, and the area ratio in the processed image is used to calculate the 10 2 μm 2 Over 130 2 μm 2 Calculate the occupancy rate of each material in the following area range.

[0118] <Method for producing resin composition> The method for producing a resin composition according to the present embodiment includes a step of melt-kneading a matrix, flame retardant particles, an elastomer raw material containing an elastomer material constituting the elastomer particles, and, if necessary, a filler. Examples of kneading devices include a twin-screw extruder and a twin-roll extruder. Specific examples include a TEM extruder (manufactured by Toshiba Machine Co., Ltd.), a TEX twin-screw kneader (manufactured by The Japan Steel Works, Ltd.), a PCM kneader (manufactured by Ikegai Iron Works), and a Kneedex (manufactured by Nippon Coke Company).

[0119] <Molded body> The molded article of this embodiment is obtained by molding the resin composition of this embodiment. Typical molding methods include extrusion molding from a mold or injection molding into a mold. Injection molding may also be performed using pellets produced by extrusion molding from a mold. A resin composition molded by injection molding may be referred to as an injection molded article. Furthermore, a molded article formed by injection molding may be further processed by blow molding or the like.

[0120] The Charpy impact value of the compact is 5kJ / m 2 More than 5kJ / m is preferable. 2 If it is less than this, cracks may occur during a drop test or the like.

[0121] The flame retardancy of molded articles can be evaluated based on the 20 mm vertical flame test (UL94V test) of the UL94 standard. UL is a safety standard for electronic devices established and approved by Underwriters Laboratories Inc. in the United States, and UL94 is also a flame retardancy standard. After evaluation, the flammability (UL94V) grade is determined according to the established criteria. Flammability (flame retardancy) is rated on three levels: V-0, V-1, and V-2, with V-0 being the most flame retardant of the three levels. Flame retardancy of V-1 or higher is preferable from the perspective of preventing the spread of fire during combustion.

[0122] ≪Equipment≫ As shown in FIG. 4 , the device 100 of this embodiment has members 10a and 10b molded from the resin composition 10 of this embodiment. Examples of the device 100 include office equipment such as printers and copiers, medical equipment such as CT scanners, and imaging equipment such as projectors and displays. These various devices have at least one of an electrical component 13, an optical component 12, and a metal component 11 in addition to the members 10a and 10b molded from the resin composition 10 of this embodiment. The electrical component 13, the optical component 12, or the metal component 11 realizes the functions of the device 100. The metal component 11 can also be used as a housing for ensuring the mechanical strength of the device 100.

[0123] The members 10a and 10b formed from the resin composition 10 can be used as members that ensure the mechanical strength of the device 100 and mechanically protect the device 100. The member 10a formed from the resin composition 10 may be an exterior body of the device 100, for example, an exterior cover. This exterior body may be fixed to a metal housing (metal part 11). The member 10b formed from the resin composition 10 of this embodiment may be an interior body of the device 100, for example, a mechanical part. This interior body may be fixed to a metal housing (metal part 11). It is preferable that the members 10a and 10b formed from the resin composition 10 have radio wave shielding properties in terms of stable operation of the device 100 and suppression of radio wave radiation from the device 100. [Example]

[0124] The materials used in the present examples and comparative examples are as follows:

[0125] (A) Matrix material [Table 1]

[0126] (B) Elastomer material [Table 2]

[0127] (C) Flame retardant particles [Table 3]

[0128] (D) Filler The average minor axis diameter [μm] of the filler shown in Table 4 is the catalog value of the product.

[0129] [Table 4]

[0130] (E) Surface treatment agent [Table 5]

[0131] (F) Additives F-1: Anti-drip agent, Mitsubishi Chemical Corporation "Metablen A-3800"

[0132] Examples 1 to 8 and Comparative Examples 1 to 6 <Production of resin composition pellets> The matrix materials shown in Table 6 were pre-dried to a moisture content of 100 ppm. This was done to prevent hydrolysis during kneading, and the temperature and time conditions differ depending on the type of resin. The moisture content was measured using a polymer moisture meter, "Aquatrac V (product name) manufactured by ITS Japan Co., Ltd."

[0133] Next, the flame retardant particles and filler were surface treated as shown in Table 6. The flame retardant particles and filler were placed in a mixer, "SMV-20Ba (product name) manufactured by Kawata Corporation," and the surface treatment agent shown in Table 6 was added dropwise from above while stirring. The amount of surface treatment agent to be added was calculated using the following model formula (4) from the specific surface area of ​​the flame retardant particles or filler and the minimum coverage area of ​​the surface treatment agent. The minimum coverage area was determined by referring to manufacturer catalogs and literature values.

[0134] Amount of surface treatment agent added (g) = Mass of flame retardant particles or filler (g) × Specific surface area of ​​flame retardant particles or filler (m 2 / g) / minimum coverage area of ​​surface treatment agent (g) (4) Thereafter, a blend of raw materials was prepared by adding the matrix material, elastomer material, flame retardant particles, filler, and additives so that the mass percentage of each component in the final resin composition would be as shown in Table 6. When the flame retardant particles and filler were surface-treated, the mass percentage of the flame retardant particles and filler included the surface treatment agent.

[0135] The blend was melt-kneaded in a twin-screw extruder "PCM30 (product name) manufactured by Ikegai Corporation" at a cylinder temperature of 260°C and a screw rotation speed of 250 rpm to produce strands, which were then cut and processed using a pelletizer to obtain pellets of the resin composition.

[0136] <Molding of resin molded products> The resulting resin composition pellets were pre-dried to a moisture content of 100 ppm. The moisture content was measured in the same manner as for the matrix material. Then, using an injection molding machine (SE-180D (product name) manufactured by Sumitomo Heavy Industries, Ltd.) at a cylinder temperature of 280°C and a mold temperature of 30°C, rectangular test pieces for Charpy impact tests (length 80 mm × width 10 mm × thickness 4 mm) and test pieces for flame retardancy tests (length 125 mm × width 12.5 mm × thickness 1.5 mm) were molded.

[0137] <Flame retardancy test> Using the molded flame retardancy test specimens, V tests were conducted in accordance with the UL94 standard on 10 samples of each type (5 each in normal condition and aging condition). The corresponding V test performance is shown in Table 6.

[0138] <Impact strength (Charpy impact value)> The molded rectangular specimens were notched (shape A) using a Yasuda Seiki Seisakusho Co., Ltd. notching machine (product name: No. 189-PN) in accordance with JIS K7111, creating a 2 mm deep, 0.25 mm notch tip radius, and a 45° notch in the center. The specimens were then fractured using a Yasuda Seiki Seisakusho Co., Ltd. Charpy impact tester (product name: No. 258) in accordance with JIS K7111-1, with an energy of 1 J from the back of the notch. The energy required for fracture was calculated from the angle at which the hammer, raised to 150°, returned to its original position after fracture. The average of the measurements for five specimens was taken as the impact strength (Charpy impact value).

[0139] <ΔHSP value> The ΔHSP values ​​were calculated using the 5th Edition 5.4.01 of "HSPiP," a database-equipped calculation software developed and sold by the Hansen Group, by inputting the chemical structural formula of the compound. The ΔHSP value between the surface of the flame retardant particle and the elastomer material is "ΔHSP value 1," and the ΔHSP value between the surface of the filler and the elastomer material is "ΔHSP value 2," as shown in Table 6.

[0140] <Confirmation of the distributed structure> The center of the molded rectangular test piece was observed in the cross-sectional direction to confirm the dispersion structure of the flame retardant particles, filler, and elastomer particles in the matrix. The cross-section to be observed was prepared by polishing using abrasive paper with grit sizes from #400 to #2500, followed by buffing using diamond slurry with a particle size of 0.5 μm. The dispersion structure was observed at a magnification of 5,000x using a scanning electron microscope (JEOL Ltd., JSM-F100 (product name)) at an accelerating voltage of 3 kV.

[0141] The results of the observations are shown in Table 6. The cases where the elastomer particles and flame retardant particles were in the state shown in Figure 1(a) are labeled "core-shell" and the cases where they were in the state shown in Figure 1(b) are labeled "independently dispersed." Table 6 also lists the cases where the elastomer particles and filler were in the state shown in Figure 3 as "independently dispersed." Furthermore, cross-sectional SEM images of Example 1 are shown in Figure 5(a) and Comparative Example 1 in Figure 5(b). The field of view of the SEM images in Figures 5(a) and (b) is 25.6 μm × 19.2 μm, and the scale size is 1 μm. In the test piece of Example 1, multiple composite particles with a core-shell structure of elastomer particles and flame retardant particles are present at distances of less than 20 μm.

[0142] [Table 6]

[0143] The resin compositions of Examples 1 to 7 were evaluated as V-0 in flame retardancy in the UL94V test. The resin composition of Example 8 was evaluated as V-1 in flame retardancy in the UL94V test. The resin compositions of Examples 1 to 8 have a "core-shell" structure of elastomer and flame retardant particles, and it is presumed that the presence of the flame retardant particles in the easily flammable elastomer inhibits combustion of the elastomer, resulting in high flame retardancy of the resin compositions. The resin compositions of Examples 1 to 8 also have a Charpy impact strength of 5 kJ / m 2 These results show excellent mechanical properties. This is presumably because the elastomer and flame retardant particles form a "core-shell" structure, meaning that the flexible elastomer is present around the flame retardant particles, which are likely to be the starting point of fracture, and this does not reduce the impact strength of the resin composition.

[0144] The resin compositions of Comparative Examples 1 to 3 were rated V-2 in flame retardancy in the UL94V test, while the resin compositions of Comparative Examples 4 to 6 were rated not V in flame retardancy in the UL94V test. In the resin compositions of Comparative Examples 1 to 6, the elastomer and flame retardant particles were "independently dispersed," and it is presumed that the presence of the elastomer alone made them more flammable. In addition, the Charpy impact strength was 4.5 kJ / m 2It is assumed that the flame retardant particles acted as the starting point for the fracture, reducing the impact strength.

[0145] The present invention is not limited to the above-described embodiments and examples, and many modifications are possible within the technical concept of the present invention. Furthermore, the effects described in the embodiments and examples of the present invention are merely a list of the most preferable effects resulting from the present invention, and the effects of the present invention are not limited to those described in the embodiments and examples.

[0146] Furthermore, new matters may be added to at least one embodiment. The disclosure of this specification includes not only what is explicitly described in this specification, but also all matters that can be understood from this specification and the drawings attached hereto.

[0147] In addition, with regard to specific numerical ranges exemplified in this specification, the notation e to f (e and f are numbers) means e or more and / or f or less. Furthermore, when a range i to j and a range m to n are both given for specific numerical ranges exemplified (i, j, m, and n are numbers), the pair of lower and upper limits is not limited to the pair i and j or the pair m and n. For example, it is also possible to consider a combination of multiple pairs of lower and upper limits. In other words, when a range i to j and a range m to n are both given, it is also possible to consider the range i to n or the range m to j as long as there is no contradiction. Furthermore, being e or more means being e or greater than e (exceeding e), and it is also possible to adopt a value greater than e without adopting e. Furthermore, being f or less means being f or smaller than f (less than f), and it is also possible to adopt a value smaller than f without adopting f.

[0148] Furthermore, the disclosure of this specification includes the complement of each individual concept described in this specification. In other words, if this specification contains a statement that "A is B," it can be said that this specification discloses "A is not B," even if it omits a statement that "A is not B." This is because a statement that "A is B" presupposes that the case in which "A is not B" is taken into consideration.

[0149] The technology described in this specification can contribute to the realization of a sustainable society, such as a decarbonized / recycling-based society.

[0150] ≪Included components≫ The disclosure of this embodiment includes the following configuration. (Configuration 1) A resin composition comprising a matrix containing a thermoplastic resin as a main component, a plurality of flame retardant particles having a particle diameter of 0.1 μm or more, and a plurality of elastomer particles having a particle diameter of 0.1 μm or more, the elastomer material constituting the plurality of elastomer particles is a thermoplastic elastomer; the plurality of elastomer particles are dispersed in the matrix; the first elastomer particles and the second elastomer particles among the plurality of elastomer particles are present at intervals of 20 μm or less, A resin composition characterized in that a first flame retardant particle of the plurality of flame retardant particles is present in the first elastomer particle, and a second flame retardant particle of the plurality of flame retardant particles is present in the second elastomer particle. (Configuration 2) a first flame retardant particle group containing the first flame retardant particles is dispersed in the first elastomer particles; 2. The resin composition according to claim 1, wherein a second flame retardant particle group containing the second flame retardant particles is dispersed in the second elastomer particles. (Configuration 3) 10 of the cross section of the resin composition 2 μm 2 Over 130 2 μm 23. The resin composition according to claim 1, wherein 50% or more by number of the 10 or more elastomer particles in the following area range are separated via the matrix. (Configuration 4) 10 of the cross section of the resin composition 2 μm 2 Over 130 2 μm 2 A resin composition according to aspect 2, characterized in that 50% or more by number of the 10 or more flame retardant particles in the following area range are separated by an elastomer material constituting the plurality of elastomer particles. (Configuration 5) 10 of the cross section of the resin composition including the first elastomer particles, the second elastomer particles, the first flame retardant particles, and the second flame retardant particles 2 μm 2 Over 130 2 μm 2 The occupancy rate in the following area ranges is: 5. A resin composition according to any one of configurations 1 to 4, characterized in that the matrix occupies 30 area % or more and 90 area % or less, the plurality of flame retardant particles occupies 1 area % or more and 50 area % or less, and the elastomer material constituting the plurality of elastomer particles occupies 1 area % or more and 50 area % or less. (Configuration 6) 100% of the first elastomer particles, the second elastomer particles, the first flame retardant particles, and the second flame retardant particles in the resin composition. 3 μm 3 More than 1mm 3 The composition in the following volume ranges is: A resin composition according to any one of configurations 1 to 5, characterized in that the matrix is ​​30% by mass or more and 90% by mass or less, the plurality of flame retardant particles are 1% by mass or more and 50% by mass or less, and the elastomer material constituting the plurality of elastomer particles is 1% by mass or more and 50% by mass or less. (Configuration 7) 7. The resin composition according to any one of configurations 1 to 6, wherein the plurality of flame retardant particles are solid at a temperature of 250°C or higher and 300°C or lower. (Configuration 8) 8. The resin composition according to any one of configurations 1 to 7, wherein the particle diameter of the plurality of flame retardant particles is 0.1 μm or more and 50 μm or less. (Configuration 9) 9. The resin composition according to any one of configurations 1 to 8, wherein the plurality of flame retardant particles are particles of a metal phosphinate. (Configuration 10) 10. The resin composition according to any one of configurations 1 to 9, wherein the plurality of flame retardant particles are melamine cyanurate particles. (Configuration 11) 11. The resin composition according to any one of configurations 1 to 10, wherein the plurality of flame retardant particles have a surface layer formed by surface treatment of a substrate. (Configuration 12) 12. The resin composition according to claim 11, wherein the surface treatment is a surface treatment using a silane coupling agent. (Configuration 13) The ΔHSP value of the surfaces of the plurality of flame retardant particles and the elastomer material constituting the plurality of elastomer particles is 7.0 MPa 1 / 2 13. The resin composition according to any one of configurations 1 to 12, characterized in that:

[0151] (Configuration 14) 14. The resin composition according to claim 1, wherein the thermoplastic resin is a polar polymer. (Configuration 15) 15. The resin composition according to claim 1, wherein the thermoplastic resin is a crystalline polymer. (Configuration 16) 16. The resin composition according to claim 1, wherein the thermoplastic resin is polyethylene terephthalate. (Configuration 17) 17. The resin composition according to claim 1, wherein the thermoplastic resin has a carbodiimide group.

[0152] (Configuration 18) 18. The resin composition according to claim 1, wherein the elastomer material constituting the plurality of elastomer particles is a styrene-based elastomer having an acid-modified group or an olefin-based elastomer having an acid-modified group. (Configuration 19) 19. The resin composition according to claim 1, wherein the melting point of the elastomer material constituting the plurality of elastomer particles is lower than the glass transition point or melting point of the matrix. (Configuration 20) 20. The resin composition according to claim 1, wherein the particle diameter of the first elastomer particles and the second elastomer particles is 20 μm or less. (Configuration 21) 21. The resin composition according to claim 1, wherein the particle diameter of the first elastomer particles and the second elastomer particles is 0.5 μm or more and 10 μm or less.

[0153] (Configuration 22) Furthermore, the composition contains a plurality of fillers whose main component is an inorganic material and whose minor axis is 0.1 μm or more, the plurality of fillers are dispersed in the matrix; Among the plurality of fillers, a first filler that is closest to the first elastomer particle is separated from the first elastomer particle via the matrix, A resin composition according to any one of claims 1 to 21, characterized in that, among the plurality of fillers, a second filler that is closest to the second elastomer particle is separated from the second elastomer particle via the matrix. (Configuration 23) 23. The resin composition according to claim 22, wherein the distance between the first filler and the second filler is 20 μm or less, the distance between the first filler and the first elastomer particles is 20 μm or less, and the distance between the second filler and the second elastomer particles is 20 μm or less. (Configuration 24) 10 of the cross section of the resin composition 2 μm 2 Over 130 2 μm 2 24. The resin composition according to claim 22 or 23, characterized in that 50% or more by number of the 10 or more fillers in the following area range are separated from the plurality of elastomer particles via the matrix. (Configuration 25) 10 of the cross section of the resin composition including the first elastomer particles, the second elastomer particles, the first flame retardant particles, the second flame retardant particles, the first filler, and the second filler. 2 μm 2 Over 130 2 μm 2 The occupancy rate in the following area ranges is: 25. A resin composition according to any one of claims 22 to 24, characterized in that the matrix is ​​30 area % or more and 90 area % or less, the plurality of flame retardant particles are 1 area % or more and 50 area % or less, the elastomer material constituting the plurality of elastomer particles is 1 area % or more and 50 area % or less, and the plurality of fillers are 1 area % or more and 50 area % or less. (Configuration 26) 100% by weight of the first elastomer particles, the second elastomer particles, the first flame retardant particles, the second flame retardant particles, the first filler, and the second filler in the resin composition. 3 μm 3 More than 1mm 3 The composition in the following volume ranges is: 26. A resin composition according to any one of claims 22 to 25, characterized in that the matrix is ​​30% by mass or more and 90% by mass or less, the plurality of flame retardant particles are 1% by mass or more and 50% by mass or less, the elastomer material constituting the plurality of elastomer particles is 1% by mass or more and 50% by mass or less, and the plurality of fillers are 1% by mass or more and 50% by mass or less. (Configuration 27) The ΔHSP value of the elastomer material constituting the surfaces of the plurality of fillers and the plurality of elastomer particles is 7.0 MPa 1 / 2 27. The resin composition according to claim 22, wherein the resin composition is a resin composition comprising: (Configuration 28) 28. The resin composition according to claim 22, wherein the first filler and the second filler contain glass fiber, silica, or calcium carbonate. (Configuration 29) 29. The resin composition according to claim 22, wherein the plurality of fillers have a surface layer formed by surface treatment of the base made of the inorganic material. (Configuration 30) 30. The resin composition according to claim 29, wherein the surface treatment is a surface treatment with a silane coupling agent. (Configuration 31) 30. The resin composition according to any one of claims 22 to 29, characterized in that it contains at least one of a metal material containing a transition metal element, a compound material containing a transition metal element, a metal material containing a typical metal element, and a compound material containing a typical metal element, which are different from the inorganic material that is the main component of the filler.

[0154] (Configuration 32) 32. The method for producing a resin composition according to claim 1, further comprising the step of melt-kneading the matrix, the flame retardant particles, and an elastomer material constituting the elastomer particles. (Configuration 33) A pellet comprising the resin composition according to any one of claims 1 to 31. (Configuration 34) 32. A molded article made from the resin composition according to claim 1, wherein the thermoplastic resin is a crystalline polymer. (Configuration 35) 32. An injection-molded article comprising the resin composition according to claim 1. (Configuration 36) A member molded from the resin composition according to any one of claims 1 to 31; An apparatus comprising at least one of an electrical component, a metal component, and an optical component. (Configuration 37) 37. The device of claim 36, wherein the member is an exterior body. [Explanation of symbols]

[0155] 1: Matrix, 2: Flame retardant particles, 3: Elastomer particles, 4: Filler, 5: Craze

Claims

1. A resin composition comprising a matrix containing a thermoplastic resin as a main component, a plurality of flame retardant particles having a particle diameter of 0.1 μm or more, and a plurality of elastomer particles having a particle diameter of 0.1 μm or more, the elastomer material constituting the plurality of elastomer particles is a thermoplastic elastomer; the plurality of elastomer particles are dispersed in the matrix; the first elastomer particles and the second elastomer particles among the plurality of elastomer particles are present at intervals of 20 μm or less; A resin composition characterized in that a first flame retardant particle of the plurality of flame retardant particles is present in the first elastomer particle, and a second flame retardant particle of the plurality of flame retardant particles is present in the second elastomer particle.

2. a first flame retardant particle group containing the first flame retardant particles is dispersed in the first elastomer particles; 2. The resin composition according to claim 1, wherein a second flame retardant particle group containing the second flame retardant particles is dispersed in the second elastomer particles.

3. 10 of the cross section of the resin composition 2 μm 2 Greater than or equal to 130 2 μm 2 3. The resin composition according to claim 1, wherein 50% or more by number of the 10 or more elastomer particles in the following area range are separated via the matrix.

4. 10 of the cross section of the resin composition 2 μm 2 Greater than or equal to 130 2 μm 2 The resin composition according to claim 2, characterized in that 50% or more of the 10 or more flame retardant particles in the following area range are separated by an elastomer material constituting the plurality of elastomer particles.

5. 10 of the cross section of the resin composition, including the first elastomer particles, the second elastomer particles, the first flame retardant particles, and the second flame retardant particles 2 μm 2 Greater than or equal to 130 2 μm 2 The occupancy rate in the following area ranges is: The resin composition according to claim 1 or 2, characterized in that the matrix is ​​30 area% or more and 90 area% or less, the multiple flame retardant particles are 1 area% or more and 50 area% or less, and the elastomer material constituting the multiple elastomer particles is 1 area% or more and 50 area% or less.

6. 100% of the first elastomer particles, the second elastomer particles, the first flame retardant particles, and the second flame retardant particles in the resin composition. 3 μm 3 More than 1mm 3 The composition in the following volume ranges is: The resin composition according to claim 1 or 2, characterized in that the matrix is ​​30% by mass or more and 90% by mass or less, the plurality of flame retardant particles are 1% by mass or more and 50% by mass or less, and the elastomer material constituting the plurality of elastomer particles is 1% by mass or more and 50% by mass or less.

7. 3. The resin composition according to claim 1, wherein the plurality of flame retardant particles are solid at a temperature of 250°C or higher and 300°C or lower.

8. 3. The resin composition according to claim 1, wherein the particle diameter of the plurality of flame retardant particles is 0.1 μm or more and 50 μm or less.

9. 3. The resin composition according to claim 1, wherein the plurality of flame retardant particles are particles of a metal phosphinate.

10. 3. The resin composition according to claim 1, wherein the plurality of flame retardant particles are melamine cyanurate particles.

11. 3. The resin composition according to claim 1, wherein the plurality of flame retardant particles have a surface layer formed by surface treatment of a substrate.

12. 12. The resin composition according to claim 11, wherein the surface treatment is a surface treatment with a silane coupling agent.

13. The ΔHSP value of the surface of the plurality of flame retardant particles and the elastomer material constituting the plurality of elastomer particles is 7.0 MPa 1 / 2 3. The resin composition according to claim 1, wherein the resin composition is:

14. 3. The resin composition according to claim 1, wherein the thermoplastic resin is a polar polymer.

15. 3. The resin composition according to claim 1, wherein the thermoplastic resin is a crystalline polymer.

16. 3. The resin composition according to claim 1, wherein the thermoplastic resin is polyethylene terephthalate.

17. 3. The resin composition according to claim 1, wherein the thermoplastic resin has a carbodiimide group.

18. 3. The resin composition according to claim 1, wherein the elastomer material constituting the plurality of elastomer particles is a styrene-based elastomer having an acid-modified group or an olefin-based elastomer having an acid-modified group.

19. 3. The resin composition according to claim 1, wherein the melting point of the elastomer material constituting the plurality of elastomer particles is lower than the glass transition point or melting point of the matrix.

20. 3. The resin composition according to claim 1, wherein the particle diameter of the first elastomer particles and the second elastomer particles is 20 μm or less.

21. 3. The resin composition according to claim 1, wherein the particle diameter of the first elastomer particles and the second elastomer particles is 0.5 μm or more and 10 μm or less.

22. Further, the composition contains a plurality of fillers each having a minor axis of 0.1 μm or more and each of which is composed mainly of an inorganic material, the plurality of fillers are dispersed in the matrix; Among the plurality of fillers, a first filler that is present closest to the first elastomer particle is separated from the first elastomer particle via the matrix, The resin composition according to claim 1 or 2, characterized in that, among the plurality of fillers, the second filler that is closest to the second elastomer particle is separated from the second elastomer particle via the matrix.

23. The resin composition according to claim 22, characterized in that the distance between the first filler and the second filler is 20 μm or less, the distance between the first filler and the first elastomer particles is 20 μm or less, and the distance between the second filler and the second elastomer particles is 20 μm or less.

24. 10 of the cross section of the resin composition 2 μm 2 Greater than or equal to 130 2 μm 2 The resin composition according to claim 22, characterized in that 50% or more by number of the 10 or more fillers in the following area range are separated from the plurality of elastomer particles via the matrix.

25. A cross section of the resin composition including the first elastomer particles, the second elastomer particles, the first flame retardant particles, the second flame retardant particles, the first filler, and the second filler. 2 μm 2 Greater than or equal to 130 2 μm 2 The occupancy rate in the following area ranges is: The resin composition described in claim 22, characterized in that the matrix is ​​30 area% or more and 90 area% or less, the multiple flame retardant particles are 1 area% or more and 50 area% or less, the elastomer material constituting the multiple elastomer particles is 1 area% or more and 50 area% or less, and the multiple fillers are 1 area% or more and 50 area% or less.

26. 100% by weight of the resin composition including the first elastomer particles, the second elastomer particles, the first flame retardant particles, the second flame retardant particles, the first filler, and the second filler. 3 μm 3 More than 1mm 3 The composition in the following volume ranges is: The resin composition described in claim 22, characterized in that the matrix is ​​30% by mass or more and 90% by mass or less, the multiple flame retardant particles are 1% by mass or more and 50% by mass or less, the elastomer material constituting the multiple elastomer particles is 1% by mass or more and 50% by mass or less, and the multiple fillers are 1% by mass or more and 50% by mass or less.

27. The ΔHSP value of the elastomer material constituting the surfaces of the plurality of fillers and the plurality of elastomer particles is 7.0 MPa. 1 / 2 The resin composition according to claim 22, characterized in that

28. The resin composition according to claim 22, wherein the first filler and the second filler include glass fiber, silica, or calcium carbonate.

29. 23. The resin composition according to claim 22, wherein the plurality of fillers have a surface layer formed by surface treatment of the base made of the inorganic material.

30. 30. The resin composition according to claim 29, wherein the surface treatment is a surface treatment with a silane coupling agent.

31. The resin composition according to claim 22, characterized in that it contains at least one of a metal material containing a transition metal element, a compound material containing a transition metal element, a metal material containing a typical metal element, and a compound material containing a typical metal element, which is different from the inorganic material that is the main component of the filler.

32. 3. The method for producing a resin composition according to claim 1, further comprising the step of melt-kneading the matrix, the flame retardant particles, and an elastomer material constituting the elastomer particles.

33. A pellet comprising the resin composition according to claim 1 or 2.

34. A molded article made from the resin composition according to claim 1 or 2, wherein the thermoplastic resin is a crystalline polymer.

35. An injection-molded article comprising the resin composition according to claim 1 or 2.

36. A member molded from the resin composition according to claim 1 or 2; An apparatus comprising at least one of an electrical component, a metal component, and an optical component.

37. 37. The device of claim 36, wherein the member is an exterior body.

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