92 results about "Acrylic rubber" patented technology

The invention discloses an anti-aging acrylate rubber compound and a preparation method thereof, and belongs to the field of rubber chemistry and material science. The anti-aging acrylate rubber compound comprises the following components in parts by weight: 100 parts of acrylate rubber, 0.5-2 parts of stearic acid, 0.5-2 parts of an anti-aging agent A, 0.5-2 parts of an anti-aging agent B, 40-80 parts of carbon black, 1-5 parts of a release agent, 1-6 parts of a plasticizer, 0.3-4 parts of an accelerant and 0.3-3 parts of a vulcanizing agent. The preparation method of the rubber compound comprises a plurality of steps of internal mixing, open mixing, accelerator and vulcanizing agent adding, thin-passing operation and vulcanizing treatment, and finally the required anti-aging rubber product is obtained. The anti-aging acrylate rubber can be widely applied to automobile sealing parts, gaskets and other special rubber products, and the anti-aging performance of the acrylate rubber is remarkably improved.

A substrate-conveying support tape includes: a support film; a primer layer provided on the support film; and a temporary fixing material layer provided on the primer layer, in which the support film is a polyimide film, the temporary fixing material layer contains a thermoplastic resin, and the primer layer contains at least one selected from the group consisting of a silane coupling agent having an epoxy group or a ureido group, an epoxy resin, a polyurethane rubber, and an acrylic rubber having an acid value of 5 mgKOH / g or more.

An acrylic rubber composition includes an acrylic rubber and a specific antioxidant, wherein the acrylic rubber includes 15 to 55% by weight of methacrylic acid alkyl ester monomer units (a), 44.5 to 84.5% by weight of acrylic acid ester monomer units (b), and 0.5 to 4% by weight of carboxyl group-containing monomer units (c), and the content of the antioxidant is 0.1 to 5 parts by weight relative to 100 parts by weight of the acrylic rubber.

The invention relates to enhanced carboxyl type rubber and a preparation method thereof, and the enhanced carboxyl type rubber comprises the following components in parts by mass: every 100 parts of carboxyl type rubber, 0.5-2 parts of a silane coupling agent, 30-70 parts of a reinforcing agent, 2-6 parts of a water generating agent, 1-4 parts of an antioxidant, 1-5 parts of an anti-aging agent and 1-3 parts of a flow promoter. The invention provides a green, non-toxic, rapid and efficient method for crosslinking acrylate rubber by using a silane coupling agent, which does not need an accelerant, so that the defects of the traditional process are overcome, and the comprehensive performance of the material is improved at the same time. Meanwhile, the coupling agent improves the compatibility between the inorganic filler and the matrix, enhances the interface bonding force, prevents filler agglomeration and improves the comprehensive performance of the material, so that the key technical problems of non-uniform filler dispersion, weak interface bonding force, performance reduction, poor processability and the like in the traditional composite material are solved.

Provided is an acrylic rubber composition which contains a predetermined amount of a predetermined acrylic rubber (A), a predetermined polyamine crosslinking agent (B), and a predetermined crosslinking retarder (C), and wherein the relationship among the crosslinking point equivalent [a], the crosslinking agent amine equivalent [b], and the crosslinking retarder amine equivalent [c] satisfies formula (1) and formula (2), and wherein the crosslinking point equivalent [a], the crosslinking agent amine equivalent [b], and the crosslinking retarder amine equivalent [c] satisfy formula (1) and formula (2), and the crosslinking point equivalent [a], the crosslinking agent amine equivalent [b], and the crosslinking retarder amine equivalent [c] satisfy formula (1) and formula (2). Formula (1): 10 mephr < = crosslinking point equivalent [a] < = 25 mephr Formula (2): 2 < = (crosslinking point equivalent [a]-crosslinking retarder amine equivalent [c]) / crosslinking agent amine equivalent [b] < = 4.

The invention belongs to the field of anticorrosive paint production, and particularly relates to an anchor rod anticorrosive paint and a preparation method thereof. The coating is prepared from the following components in parts by weight: 35 to 45 parts of fluorocarbon modified epoxy resin, 15 to 25 parts of PVDF / acrylate copolymer, 5 to 10 parts of acrylic rubber with a core-shell structure, 8 to 12 parts of curing agent, 2 to 5 parts of 2, 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate, 4 to 8 parts of zinc oxide, 3 to 6 parts of mica powder, 2 to 5 parts of talcum powder, 5 to 10 parts of zinc phosphate, 4 to 8 parts of aluminum triphosphate, 0.6 to 1.2 parts of dispersing agent, 0.15 to 0.5 part of defoaming agent and 0.3 to 0.8 part of flatting agent. By adding acrylic rubber with a core-shell structure, a good elastic network is formed in a coating, the flexibility and impact resistance of the coating are remarkably improved, fluorocarbon modified epoxy resin combines the weather resistance and chemical resistance of fluorocarbon resin and the high adhesive force and high hardness of epoxy resin, excellent adhesive force is provided, and meanwhile, the coating can be applied to the coating. Due to the high hardness characteristic, the coating has good wear resistance and scratch resistance, and the completeness of the coating can be kept in complex construction and use environments.

The present invention relates to a polycarbonate composition comprising the following components, relative to the total weight of the composition A) 63-81 wt. % of an aromatic polycarbonate,B) 13-20 wt. % of a phosphorus flame retardant,C) 4-12 wt. % of impact modifiers containing 1-7 wt. % of a first impact modifier and 1-7 wt. % a second impact modifier, wherein the first impact modifier is acrylonitrile-butadiene-styrene, and the second impact modifier is selected from methyl methacrylate-butadiene-styrene and silicone-acrylic rubber based impact modifiers,D) 1-6 wt. % of a mineral filler, andE) 0.05-0.09 wt. % of polytetrafluoroethylene.The present invention also relates to a shaped article made from the composition. The polycarbonate composition according to the present invention has a good combination of flame retardancy and impact strength.

An acrylic rubber containing a (meth)acrylate, a vinyl carboxylate, and ethylene, as monomer units, wherein a content of the vinyl carboxylate is 15% by mass or more and a content of the ethylene is 5% by mass or more, based on a total amount of the monomer units in the acrylic rubber.

The utility model is applicable to the technical field of reaction kettles, and provides an acrylate rubber reaction kettle convenient to clean, the reaction kettle is arranged, the upper end of the reaction kettle is detachably and fixedly connected with a maintenance cover plate, and the maintenance cover plate is connected with sliding blocks of two first screw rod sliding tables, so that the maintenance cover plate is convenient to disassemble; the maintenance cover plate and a fixing frame, a connecting base, a second lead screw sliding table, a main rod, a second stepping motor, a disc, an L-shaped scraping rod, a long stirring rod and a short stirring rod which are fixed to the maintenance cover plate are driven to ascend at the same time to be separated from the reaction kettle, cleaning is convenient, meanwhile, the first stepping motor is started to drive the reaction kettle to incline, the interior of the reaction kettle is convenient to clean, and the service life of the reaction kettle is prolonged. And compared with internal cleaning through a stirring device, the cleaning effect is improved, meanwhile, manual separation is not needed, and manpower is saved.

Provided are a thermoplastic resin composition and a molded product manufactured therefrom, the thermoplastic resin composition including (A) 10 to 40 wt % of an acrylic graft copolymer that includes a core including an acrylic rubbery polymer, and a shell formed by graft polymerization of a monomer to the core, the monomer including an alkyl (meth)acrylate, an aromatic vinyl compound, a vinyl cyanide compound, or a combination thereof; (B) 30 to 60 wt % of a polyalkyl (meth)acrylate resin; and (C) 10 to 40 wt % of an N-(substituted)maleimide-acrylic copolymer.

Provided is a thermoplastic resin composition which includes: a first graft copolymer including a first acrylic rubber polymer; a second graft copolymer including a second acrylic rubber polymer; and a first styrene-based copolymer including an alkyl-substituted styrene-based monomer unit and an acrylonitrile-based monomer unit, wherein the first acrylic rubber polymer has an average particle diameter larger than that of the second acrylic rubber polymer, the first graft copolymer is included in a larger amount than the second graft copolymer, and the sum of the first graft copolymer and the second graft copolymer is 22 parts by weight or less with respect to 100 parts by weight of the sum of the first graft copolymer, the second graft copolymer, and the first styrene-based copolymer.

A magnetic composition containing a magnetic powder, a thermosetting component, and a rubber component, wherein the rubber component includes at least one selected from the group consisting of a butadiene rubber, a silicone rubber, a styrene-butadiene rubber, an acrylic rubber, an acrylic block copolymer, and a styrene-based block copolymer.

A modifier for polyamide resins that can improve the impact strength and fluidity of a polyamide resin composition while keeping its high visual quality intact is provided. The modifier for polyamide resins contains polymer particles and an acid. Each of the polymer particles has a core-shell structure composed of a shell layer and one or more core layers. At least one of the core layers is formed of polybutadiene, poly(butadiene-styrene), or acrylic rubber. The shell layer is formed of a polymer comprising structural units derived from monomer components containing 50 wt % or more of a methacrylic ester monomer and 0 to 50 wt % of another monomer copolymerizable with the methacrylic ester monomer.

To provide an acrylic rubber composition capable of eliminating problems of mold contamination and mold corrosion, while easy for mold removal or high-speed molding, and excellent in sealability, durability, etc., and also to provide a rubber molding using the same.SOLUTION: An acrylic rubber composition includes a component (A) as a principal component and components (B) to (D): (A) an acrylic rubber not including a halogen-based component; (B) a carbon black having a BET specific surface area of 15 to 100 m2 / g; (C) a plasticizer with a molecular weight of 400 to 3500; and (D) a cross-linking agent selected from a polyvalent primary amine compound and an organic peroxide.SELECTED DRAWING: None

The present application relates to a kind of high-gloss scratch-resistant heat-resistant grade PMMA composite material and its preparation method, by weight fraction, high-gloss scratch-resistant heat-resistant grade PMMA composite material includes PMMA, toughening agent, compatibilizer, heat-resistant agent, brightener and auxiliary agent;Toughening agent has core-shell structure, outer shell is the copolymer of styrene and acrylonitrile, inner core is organosiloxane and acrylic rubber;The particle size of toughening agent is 80-120nm;Compatibilizer is MABS;Heat-resistant agent is the copolymer of alpha-methylstyrene and acrylonitrile;Brightener is EBS;Its preparation method is: after being mixed uniformly according to weight ratio, high-gloss scratch-resistant heat-resistant grade PMMA composite material is prepared by twin-screw extruder extrusion granulation.The preparation method of the present application is simple, and the prepared PMMA composite material has the characteristics of high gloss, scratch resistance, high heat-resistant temperature.

The utility model discloses an acrylate rubber cutting device with a protective structure, which comprises a preparation device and a support frame rotationally arranged on one side of a discharge port of the preparation device, an adjusting limit bolt mounted at the output end of a driving device is inserted into the support frame in a limiting manner, a cutter is mounted on the outer side of the support frame, and the protective structure is arranged on the outer side of the cutter. A horizontal rotating frame used for vertical rotating supporting is inserted into the supporting rod, and a transverse rotating frame used for horizontal rotating supporting of the supporting rod is rotationally installed at one end of the horizontal rotating frame. According to the utility model, the support rod and the blade are positioned on the same side by rotating the rotary support frame, and then the use direction of the support rod is adjusted under the two-way rotary support of the horizontal rotary support frame and the support rod, so that the blade is automatically clamped and fixed by the clamping frame on one side and the clamping auxiliary frame; and a worker does not need to be in direct contact with the blade, and the situation that the worker is damaged by high temperature is effectively prevented.

To provide a resin composition and a resin molded article which have excellent transparency combined with impact resistance, and which are suitable for recycling.SOLUTION: A resin composition contains acrylic rubber particles (A) including a structural unit derived from an aromatic vinyl compound represented by the following formula (I). A resin molded article is obtained by molding the resin composition. (In formula (I), R represents a methyl group, an ethyl group, an n-propyl group, an iso-propyl group, an n-butyl group, a tert-butyl group, or an aminomethyl group).SELECTED DRAWING: Figure 1

The present application discloses a diaphragm of a sound-generating device and a sound-generating device. The diaphragm includes at least one modified acrylic rubber membrane layer, which is prepared by mixing inorganic hollow microspheres, additives, and acrylic polymer to form a mixed rubber and then subjecting it to a cross-linking reaction. The particle size of the inorganic hollow microspheres is 1 μm to 60 μm, and the distribution density of the inorganic hollow microspheres in the modified acrylic rubber membrane layer is 0.15 g / cm 3 ~0.9g / cm 3 After the modified acrylic rubber membrane layer is immersed in an oily solvent at 150°C for 70 hours, the fracture strength decrease ratio of the modified acrylic rubber membrane layer is ≤30%, and the swelling ratio is ≤20%. The diaphragm of the present application is prepared by cross-linking a modified acrylic rubber membrane layer prepared by mixing inorganic hollow microspheres, additives, and acrylic polymer to form a rubber compound. This not only reduces the density of the diaphragm material and improves the mid-frequency sensitivity of the sound-generating device, but also makes the diaphragm material have excellent resistance to solvent swelling.

The utility model relates to the technical field of rubber production equipment, and discloses an acrylic rubber vacuum briquetting device which comprises a bottom plate, an acrylic rubber briquetting demolding mechanism is arranged at the top of the bottom plate, a vacuum control mechanism is arranged outside the acrylic rubber briquetting demolding mechanism, and a vacuum control mechanism is arranged outside the acrylic rubber briquetting demolding mechanism. The bottom of the bottom plate is fixedly connected with a supporting rod, the acrylate rubber pressing block demolding mechanism comprises an acrylate rubber pressing block assembly and an acrylate rubber demolding mechanism, and the acrylate rubber pressing block assembly is arranged outside the acrylate rubber demolding mechanism. The interior of the mold box is heated through the heating device, the extrusion device is matched for extrusion, so that briquetting is facilitated, a motor drives a rotating plate outside a sliding U-shaped rod to rotate in the motor, so that a baffle is opened, and rapid demolding is facilitated through pushing of the extrusion device; and therefore, the vacuum pump can pump out air in the mold box.

Provided are an acrylic-based copolymer composition, a method of preparing the same, and an acrylic-based rubber composition obtained from the acrylic-based copolymer composition. Specifically, an acrylic-based copolymer composition prepared by polymerizing the acrylic-based copolymers each at high and low temperatures and mixing the acrylic-based copolymers, thereby having improved processability is provided.

Provided is an electrophotographic member excellent in transferability over a long period of time. An electrophotographic member according to the present invention comprises a base layer and a surface layer on the base layer, said electrophotographic member being characterized in that: the surface layer includes at least one selected from the group consisting of (meth)acrylic resins and (meth)acrylic rubber; a plurality of resin particles are present on the outer surface of the surface layer; at least some particles among the plurality of resin particles are in direct contact with the outer surface of the surface layer; a portion of the outer surface of the electrophotographic member is constituted by the resin particles; protrusions and recesses formed by the resin particles are present on the outer surface of the electrophotographic member; and the resin particles include a (meth)acrylic-modified silicone resin.

To provide a flame-retardant polycarbonate resin composition which is excellent in alkali oil resistance, thinning flame retardancy, impact resistance and surface appearance.SOLUTION: A flame-retardant polycarbonate resin composition contains, with respect to 100 pts.wt. of a component composed of 30 to 50 pts.wt. of (A) a polycarbonate resin (component A) and 70 to 50 pts.wt. of (B) a polybutylene terephthalate resin (component B), 10 to 20 pts.wt. of (C) a brominated polycarbonate-based flame retardant (component C), 1 to 5 pts.wt. of (D) antimony pentaoxide, 1 to 4.5 pts.wt. of (E) a core-shell type graft copolymer obtained by graft polymerization of acrylic rubber as a core component and a (meth)acrylate compound as a shell component, more than 2 pts.wt. and 5 pts.wt. or less of (F) a talc (component F) having an average particle diameter of 0.1 to 10 μm, 0.1 to 1 pts.wt. of (G) a drip prevention agent (component G), and 0.01 to 0.5 pts.wt. of (H) a transesterification reaction prevention agent (component H).SELECTED DRAWING: None

A fuel hose having an inner layer of a thermoplastic elastomer with Graphene or Graphene Derivatives, along with an outer rubber jacket. The outer rubber jacket can include any of a thermoset chlorinated polyethylene elastomer, a chloropolyethylene elastomer, a chlorosulphonated polyethylene, an epichlorohydrin rubber, an ethylene acrylic elastomer or an acrylic rubber material. The inner layer can also include a heat resistant polyamide resin (PA9T material) and a thermoplastic elastomer enhanced with a Graphene or Graphene Derivative. The elastomer material can include any of a thermoplastic vulcanizate, a non-fluorinated elastomer, a fluorocarbon elastomer, a highly saturated nitrile rubber or a nitrile rubber. The outer rubber jacket can include any of a thermoplastic chlorinated polyethylene elastomer, a chloropolyethylene elastomer, a chlorosulphonated polyethylene, an epichlorohydrin rubber, an ethylene acrylic elastomer or an acrylic rubber material.

Provided is an acrylic rubber composition comprising an acrylic rubber having a glass transition temperature of -29°C or lower, and a carbon black having a nitrogen adsorption specific surface area-to-iodine adsorption amount ratio of 1.00 × 103 m2 / g or greater and a nitrogen adsorption specific surface area of 25 m2 / g or greater.

The present application relates to a kind of polyvinyl chloride alloy material and its preparation method and application, belong to polymer material technical field.The polyvinyl chloride alloy material provided by the present application, by weight fraction, includes the following components: polyvinyl chloride resin 59-81 parts, styrene-acrylonitrile-acrylic rubber terpolymer 18-42 parts, pure monomer resin 4-21 parts, inorganic rigid material 2-16 parts, stabilizer 0.5-5.5 parts and acrylic ester processing aid 1-5 parts.The present application introduces pure monomer resin and inorganic rigid material into PVC / ASA simultaneously, while maintaining the flame retardant properties of polyvinyl chloride alloy material, the wear resistance and flame retardant smoke property of product are improved, and the prepared polyvinyl chloride alloy material has excellent wear resistance and flame-retardant low smoke performance.

Provided is an acrylic rubber composition providing a rubber crosslinked product with reduced compression set. The acrylic rubber composition according to one embodiment of the present invention comprises component A: acrylic rubber, and component B: a biomass-derived filler. The content of component B is 5-100 parts by weight based on 100 parts by weight of the content of component A.

The present invention aims to provide a laminate of a carboxyl group-containing acrylic rubber composition and a fluororubber composition, which has sufficient adhesiveness by heat-crosslinking / bonding of the carboxyl group-containing acrylic rubber composition and the fluororubber composition. The present invention relates to a carboxyl group-containing acrylic rubber composition containing: (A) a carboxyl group-containing acrylic rubber, (B) a thiuram compound and / or a compound having an N-S bond, (C) a tertiary amine and / or a guanidine compound, and (D) an aliphatic diamine compound and / or an aromatic diamine compound, the carboxyl group-containing acrylic rubber composition having a scorch time t5 at 125°C of 60 minutes or less.

The invention relates to a polycarbonate composition comprising the following components, relative to the total weight of the composition: A) 63-81% by weight of an aromatic polycarbonate, B) 13-20% by weight of a phosphorus flame retardant, C) 4-12% by weight of an impact modifier containing 1-7% by weight of a first impact modifier and 1-7% by weight of a second impact modifier, wherein the first impact modifier is acrylonitrile-butadiene-styrene and the second impact modifier is selected from the group consisting of methyl methacrylate-butadiene-styrene and silicone-acrylic rubber-based impact modifiers, D) 1 to 6% by weight of a mineral filler, and E) 0.05 to 0.09% by weight of polytetrafluoroethylene. The invention also relates to a shaped article made from said composition. The polycarbonate composition according to the invention has a good combination of flame retardancy and impact strength.

To provide a rubber composition for hose, a hose, and a production method therefor, the composition and hose exhibiting superior wire adhesion and tensile strength.SOLUTION: A rubber composition for hose comprises a rubber component including an acrylic rubber having ethylene monomer units, vinyl acetate monomer units, acrylic acid ester monomer units, and carboxyl group monomer units; carbon black; a diamine crosslinking agent; and an ethylene-glycidyl (meth)acrylate copolymer. The invention also provides a hose having an inner layer, a reinforcing layer, and an outer layer in this order, wherein the reinforcing layer includes a wire-reinforcing layer subjected to brass plating, the wire-reinforcing layer is adjacent to the outer layer, and the outer layer is a cured product of the rubber composition for hose.SELECTED DRAWING: None

This invention relates to a rubber composition for high-voltage electrical insulators, comprising: (A) a rubber material selected from the group consisting of nitrile rubber, hydrogenated nitrile rubber, acrylic rubber, ethylene propylene diene monomer (EPDM) rubber, and butyl rubber; and (B) a filler selected from the group consisting of carbon black and silica. The filler (B) comprises at least one type of silica, with a silica content of 4.0% by mass or more relative to the total mass of the rubber composition, and a carbon black content of 5.0% by mass or less relative to the total mass of the rubber composition.