Fluorinated functional elastomer materials

Abstract

The present invention relates to a fluorine-containing functional elastomer material that can maintain a good hand feel, does not require other additional processing techniques, has excellent antifouling properties for various pollutants in daily life, is easy to wipe, and can delay the time of product dirtiness. The fluorine-containing functional elastomer material comprises the following components (A) to (C), (A) styrene thermoplastic elastomer; (B) a fluorine-containing copolymer obtained by copolymerizing a monomer mixture containing the following monomers (b1) to (b3), (b1) CH2=C(‑CH3)‑C(=O)‑O‑(CH2)2‑(CF2)5CF3, (b2) cyclohexyl methacrylate, (b3) 2‑hydroxyethyl methacrylate; (C) filler oil, relative to 100% by mass of the fluorine-containing functional elastomer material, the content of the component (A) is 15 to 35% by mass, the content of the component (B) is 0.5 to 10% by mass, and the content of the component (C) is 10 to 30% by mass.

Description

Technical Field

[0001] The invention relates to a fluorine-containing functional elastomer material used for a mouse surface coating material or a USB cable coating material. Background Art

[0002] With the rapid development of the 3C electronics industry, people are increasingly emphasizing personalization in addition to product performance for electronic products such as smart bracelets, watches, mice, keyboards, etc.

[0003] The soft touch materials of the above electronic products are mainly composed of thermoplastic vulcanizate (TPV), thermoplastic elastomer (TPE) or thermoplastic polyurethane elastomer (TPU) etc. Products made of such materials have the advantages of good hand feel and easy processing, but due to poor stain resistance, the products are basically dark colors such as gray and black, which cannot meet personalized requirements.

[0004] In order to cater to the needs of consumers, there are now light-colored or bright-colored products on the market that further add colorants to the above-mentioned soft-touch materials. However, after a few days of normal use, such products will form dirt that is difficult to wipe off, thus affecting the appearance of the product. At the same time, bacteria and mold will grow on the surface of the product, ultimately affecting the service life of the product.

[0005] In this regard, a solution has been proposed to coat the surface of the soft touch material to form a coating, but this solution will increase the process and cost, and will produce volatile organic compounds (VOC) during the treatment process, which is not conducive to environmental protection. In addition, a solution has been proposed to add silicone or silicone oil to the soft touch material, which can improve the smoothness of the product surface and inhibit the adhesion of stains, but because silicone itself is not oil-proof, daily stains can easily penetrate into the material, and low-molecular silicone is also easy to precipitate, which will affect the feel of the product after long-term use. Therefore, a soft touch material that does not require other additional processing techniques, has excellent feel, has excellent anti-fouling properties against various pollutants, is easy to wipe, and can inhibit stain penetration is being sought.

[0006] In order to improve the antifouling property, Patent Document 1 discloses a data cable coating material resistant to multiple pollutants, which is added with fluorinated silicone polymer, polypropylene resin, polyphenylene ether resin, polyolefin elastomer, polystyrene thermoplastic elastomer, etc. However, the data cable coating material disclosed in Patent Document 1 is not sufficient in terms of good hand feel, excellent antifouling property, and easy wiping property.

[0007] Prior art literature

[0008] Patent Literature

[0009] Patent document 1: CN106554565A Summary of the invention

[0010] In view of the problems of the above-mentioned prior art, the present invention aims to provide a fluorine-containing functional elastomer material for soft touch materials that can maintain a good feel, does not require other additional processing techniques, has excellent anti-fouling properties against various pollutants in daily life, is easy to wipe, and can delay the time when the product becomes dirty.

[0011] The present inventors have conducted intensive studies to achieve the above object and have found that the above problems can be solved by using a fluorinated functional elastomer material comprising a specific fluorinated copolymer and a thermoplastic elastomer.

[0012] That is, the present invention provides a fluorine-containing functional elastomer material, comprising the following components (A) to (C),

[0013] (A) styrene-based thermoplastic elastomer;

[0014] (B) a fluorinated copolymer obtained by copolymerizing a monomer mixture containing the following monomers (b1) to (b3),

[0015] (b1) CH2=C(-CH3)-C(=O)-O-(CH2)2-(CF2)5CF3 (hereinafter sometimes referred to as "C6FMA"),

[0016] (b2) cyclohexyl methacrylate (hereinafter, sometimes referred to as "CHMA"),

[0017] (b3) 2-hydroxyethyl methacrylate (hereinafter, sometimes referred to as "HEMA");

[0018] (C) Filling oil,

[0019] The content of the component (A) is 15 to 35% by mass, the content of the component (B) is 0.5 to 10% by mass, and the content of the component (C) is 10 to 30% by mass, relative to 100% by mass of the fluorinated functional elastomer material.

[0020] Furthermore, the fluorinated functional elastomer material of the present invention preferably further contains an organosilicone as a component (D).

[0021] Furthermore, the fluorinated functional elastomer material of the present invention is preferably used to manufacture soft touch materials such as mouse surface covering materials or USB cable covering materials. When the fluorinated functional elastomer material of the present invention is used for mouse surface covering materials, the fluorinated functional elastomer material of the present invention preferably further comprises a thermoplastic polyurethane elastomer as component (E). When the fluorinated functional elastomer material of the present invention is used for USB cable covering materials, the fluorinated functional elastomer material of the present invention preferably further comprises a polyolefin as component (F). DETAILED DESCRIPTION

[0022] Hereinafter, each component contained in the fluorine-containing functional elastomer material of the present invention will be described in detail.

[0023] <Ingredients (A)>

[0024] Component (A) is a styrene-based thermoplastic elastomer.

[0025] As styrene-based thermoplastic elastomers, block copolymers or random copolymers having aromatic vinyl polymer segments (hard segments) and conjugated diene polymer segments (soft segments) can be cited. Examples of source compounds of aromatic vinyl polymer segments include α-alkyl substituted styrenes such as styrene, α-methylstyrene, α-ethylstyrene, and α-methyl-p-methylstyrene. Examples of source compounds of conjugated diene polymer segments include butadiene, isoprene, methylpentadiene, and the like.

[0026] Specific examples of styrene-based thermoplastic elastomers include styrene-butadiene-styrene block copolymers (SBS), styrene-isoprene-styrene block copolymers (SIS), styrene-ethylene-butylene-styrene block copolymers (SEBS), styrene-ethylene-propylene block copolymers (SEPS), etc. Among them, styrene-ethylene-butylene-styrene block copolymers (SEBS) are particularly preferred.

[0027] The above components (A) can be used alone or in combination of two or more.

[0028] The component (A) may be a commercially available product, such as 1818 / 1650 / 1652 manufactured by Kraton Corporation of the United States, YH503 manufactured by Baling Petrochemical, and DP014, 029, 027 manufactured by Taiwan Rubber Corporation.

[0029] When the fluorinated functional elastomer material of the present invention is used for a mouse surface covering material, from the viewpoint of good hand feel, the content of the component (A) is preferably 15% by mass or more and 35% by mass or less, more preferably 15% by mass or more and 30% by mass or less, and further preferably 18% by mass or more and 26% by mass or less, relative to 100% by mass of the fluorinated functional elastomer material.

[0030] When the fluorinated functional elastomer material of the present invention is used for a USB cable covering material, from the viewpoint of good hand feel, the content of the component (A) relative to 100% by mass of the fluorinated functional elastomer material is preferably 15% by mass or more and 35% by mass or less, more preferably 18% by mass or more and 30% by mass or less, and further preferably 25% by mass or more and 30% by mass or less.

[0031] <Component (B)>

[0032] Component (B) is a fluorinated copolymer obtained by copolymerizing a monomer mixture containing the following monomers (b1) to (b3),

[0033] (b1)CH2=C(-CH3)-C(=O)-O-(CH2)2-(CF2)5CF3(C6FMA),

[0034] (b2) cyclohexyl methacrylate (CHMA),

[0035] (b3) 2-Hydroxyethyl methacrylate (HEMA).

[0036] By using the fluorinated copolymer in a fluorinated functional elastomer material, the fluorinated copolymer can be easily blended with an elastomer such as component (A) to form a low surface energy coating on the surface of the product, thereby preventing stains, delaying the time it takes for the product to become dirty, and making it easy to wipe.

[0037] In the fluorinated copolymer, the amount of the monomer (b2) is preferably 2 to 500 parts by weight, more preferably 5 to 200 parts by weight, and further preferably 10 to 150 parts by weight, relative to 100 parts by weight of the monomer (b1), and the amount of the monomer (b3) is preferably 1 to 500 parts by weight, more preferably 2 to 200 parts by weight, and further preferably 5 to 150 parts by weight.

[0038] The monomer mixture of component (B) may contain other monomers in addition to the above-mentioned monomers (b1) to (b3). Examples of other monomers include halogenated olefin monomers and isocyanato acrylate monomers. Examples of halogenated olefin monomers include chloroprene and monochlorovinyl acetate. Examples of isocyanato acrylate monomers include (meth)acrylate-4-isocyanatobutyl ester and (meth)acrylate-3-isocyanatopropyl ester.

[0039] Component (B) can be any one of a random copolymer or a block copolymer, preferably a random copolymer. Component (B) can be obtained by using the above-mentioned monomer, a polymerization initiator, a solvent, and a chain transfer agent as required, using a known polymerization method, such as the method described in Japanese Patent Publication No. 2014-223623 for polymerization. As a polymerization initiator, benzoyl peroxide, lauroyl peroxide, tert-butyl peroxypivalate, azobisisobutyronitrile, etc. can be listed. As a solvent, acetone, methyl ethyl ketone, ethanol, isopropanol, propylene glycol, etc. can be listed. As a chain transfer agent, lauryl mercaptan, thioethylene glycol, sodium hypophosphite, etc. can be listed. As such a polymerization method, solution polymerization, suspension polymerization, and emulsion polymerization can be listed.

[0040] The weight average molecular weight of the component (B) can be measured, for example, by GPC and is obtained in terms of polystyrene, and is preferably 1,000 to 1,000,000, more preferably 1,000 to 50,000, and even more preferably 2,000 to 20,000.

[0041] When the fluorinated functional elastomer material of the present invention is used for a mouse surface covering material, from the viewpoint of achieving both antifouling properties and cost, the content of the component (B) relative to 100% by mass of the fluorinated functional elastomer material is preferably 0.5% by mass to 10% by mass, more preferably 3% by mass to 9% by mass, and further preferably 3% by mass to 6% by mass.

[0042] When the fluorinated functional elastomer material of the present invention is used for a USB cable covering material, from the viewpoint of achieving both antifouling properties and cost, the content of the component (B) relative to 100% by mass of the fluorinated functional elastomer material is preferably 0.5% by mass to 10% by mass, more preferably 3% by mass to 9% by mass, and even more preferably 3% by mass to 6% by mass.

[0043] <Ingredient (C)>

[0044] Component (C) is a filler oil, and filler oils commonly used in soft touch materials such as mouse surface covering materials and USB cable covering materials can be used.

[0045] The type of component (C) is not particularly limited, and examples thereof include cycloparaffin oil, paraffin oil, and aromatic oil.

[0046] When the fluorinated functional elastomer material of the present invention is used for a mouse surface covering material, from the viewpoint of processability, the content of the component (C) is preferably 10% by mass or more and 30% by mass or less, more preferably 13% by mass or more and 26% by mass or less, and further preferably 15% by mass or more and 23% by mass or less, relative to 100% by mass of the fluorinated functional elastomer material.

[0047] When the fluorinated functional elastomer material of the present invention is used for a USB cable covering material, from the viewpoint of processability, the content of the component (C) is preferably 10% by mass or more and 30% by mass or less, more preferably 15% by mass or more and 25% by mass or less, further preferably 17% by mass or more and 25% by mass or less, and still more preferably 13% by mass or more and 18% by mass or less, relative to 100% by mass of the fluorinated functional elastomer material.

[0048] <Ingredient (D)>

[0049] The fluorine-containing functional elastomer material of the present invention preferably further contains an organosilicon as a component (D) from the viewpoint of improving the feel, antifouling property against various contaminants, oil repellency and easy wiping property.

[0050] Examples of the organic silicone include chain polysiloxanes such as polydimethylsiloxane and methylphenyl polysiloxane; cyclic polysiloxanes such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane; silicone resins having a three-dimensional network structure; modified polysiloxanes such as amino-modified polysiloxane, alkyl-modified polysiloxane, and fluorine-modified polysiloxane. From the viewpoint of imparting a better feel, polydimethylsiloxane represented by the following general formula (2) is preferred.

[0051] (C2H6OSi) n (2)

[0052] (In the formula, n represents a number in the range of 1000 to 20000.)

[0053] As the polydimethylsiloxane, commercially available products may be used, for example, Silicone Oil AK12500 manufactured by Wacker Chemie Co., Ltd.; KF96-10000CS and KF96-100000CS manufactured by Shin-Etsu Chemical Co., Ltd.; RM4-7081, MB50-017, 31-441, and HMB-0221 manufactured by Dow Corning Corporation.

[0054] When the fluorinated functional elastomer material of the present invention is used for a mouse surface covering material, from the viewpoint of improving the feel, antifouling properties against various contaminants, oil repellency and easy wiping properties, the content of the component (D) is preferably 0.5% by mass to 10% by mass, more preferably 0.5% by mass to 5% by mass, and further preferably 1% by mass to 3% by mass, relative to 100% by mass of the fluorinated functional elastomer material.

[0055] When the fluorinated functional elastomer material of the present invention is used for a USB cable covering material, from the viewpoint of improving the feel, antifouling properties against various contaminants, oil repellency and easy wiping properties, the content of the component (D) is preferably 0.5% by mass to 10% by mass, more preferably 0.5% by mass to 5% by mass, and even more preferably 1% by mass to 3% by mass, relative to 100% by mass of the fluorinated functional elastomer material.

[0056] <Ingredient (E)>

[0057] When the fluorinated functional elastomer material of the present invention is used for a mouse surface covering material, from the viewpoint of further improving the oil repellency of the fluorinated functional elastomer material of the present invention, the fluorinated functional elastomer material of the present invention preferably further contains a thermoplastic polyurethane elastomer (TPU) as component (E).

[0058] The thermoplastic polyurethane elastomer (TPU) is a block copolymer with hard segments and soft segments as repeating units, preferably (A'B') m Linear block polymers.

[0059] A' is a polyester or polyether with a molecular weight of 1000-6000, B' is a diol having a linear alkyl group with 2-12 carbon atoms, the chemical structure between the A'B' segments is a diisocyanate, and m is a number of 1-200.

[0060] The polyester or polyether having a molecular weight of 1000 to 6000 is derived from polyester polyol or polyether polyol. Examples of polyester polyol include polycaprolactone polyol and polyether polyol include polyoxypropylene ether polyol and polytetramethylene glycol.

[0061] Examples of the diol having a linear alkyl group having 2 to 12 carbon atoms include ethylene glycol, propylene glycol, 1,4-butanediol, 1,6-hexanediol, neopentyl glycol, 1,8-octanediol, 1,9-nonanediol, diethylene glycol, dipropylene glycol, and tripropylene glycol.

[0062] Examples of the diisocyanate include 1,6-hexamethylene diisocyanate (HDI), 4,4′-diphenylmethane diisocyanate (MDI), 1,5-naphthalene diisocyanate (NDI), isophorone diisocyanate (IPDI), xylene diisocyanate (XDI), hydrogenated XDI, and toluene diisocyanate (TDI).

[0063] As the thermoplastic polyurethane elastomer (TPU), commercially available products may be used, for example, HF-S4070A, HF 3085A, HF 75AE, 85AE manufactured by Zhejiang Huafeng Thermoplastic Polyurethane Co., Ltd., 5377A, 345, U-85AU10 manufactured by Covestro, etc. may be mentioned.

[0064] From the viewpoint of achieving both oil repellency and cost, the content of the component (E) relative to 100% by mass of the fluorine-containing functional elastomer material is preferably 20% by mass or more and 50% by mass or less, more preferably 25% by mass or more and 45% by mass or less, and still more preferably 35% by mass or more and 45% by mass or less.

[0065] <Ingredients (F)>

[0066] When the fluorinated functional elastomer material of the present invention is used for a USB cable covering material, the fluorinated functional elastomer material preferably further contains a polyolefin as component (F), more preferably polypropylene or polyethylene, and even more preferably polypropylene, from the viewpoint of making the obtained USB cable covering material have an appropriate hardness and softness.

[0067] The polypropylene used as component (F) may contain structural units derived from monomers other than propylene monomers. For example, in addition to structural units derived from ethylene monomers, structural units derived from α-olefin monomers such as 1-butene, 1-hexene, 1-heptene, 1-octene, 4-methyl-1-pentene, 1-nonene, and 1-decene, structural units derived from modifiers described below may also be mentioned.

[0068] Specific examples of polypropylene include homopolypropylene, propylene-ethylene copolymer, propylene-ethylene copolymer, propylene-butene copolymer, propylene-ethylene-butene copolymer and their modified products. As the modified product, a substance obtained by graft copolymerizing a modifier with a polypropylene resin or a substance obtained by copolymerizing a modifier on the main chain of a polypropylene resin can be listed. As the modifier, for example, unsaturated dicarboxylic acids such as maleic acid, citraconic acid, and halogenated maleic acid; esters, amides or imides of unsaturated dicarboxylic acids; unsaturated dicarboxylic anhydrides such as maleic anhydride, citraconic anhydride, and halogenated maleic anhydride; unsaturated monocarboxylic acids such as acrylic acid, methacrylic acid, and crotonic acid; esters of unsaturated monocarboxylic acids (methyl acrylate, ethyl acrylate, methyl methacrylate, ethyl methacrylate, etc.), amides or imides, etc. As the polypropylene resin, unmodified polypropylene resin is preferred.

[0069] Among them, homopolypropylene and propylene-ethylene copolymer are more preferred.

[0070] As the polypropylene, commercially available products may be used, for example, H920Y and H390F manufactured by SK Industries, Korea; ST302 manufactured by Lee Chang Young Chemical Co., Ltd.; and J301 cp manufactured by Hyosung Chemical.

[0071] Specific examples of polyethylene include high-density polyethylene, low-density polyethylene, and linear low-density polyethylene. In addition, commercially available polyethylene may be used. For example, MB9500 manufactured by LG Chemical, 7144 manufactured by Maoming Petrochemical Company, LL.8446.21 manufactured by ExxonMobil, and 7042 manufactured by Sinopec Corporation may be mentioned.

[0072] The component (F) may be used alone or in combination of two or more.

[0073] From the viewpoint of achieving moderate hardness and softness of the obtained product, the content of the component (F) relative to 100% by mass of the fluorine-containing functional elastomer material is preferably 10% by mass or more and 40% by mass or less, more preferably 13% by mass or more and 30% by mass or less, and further preferably 13% by mass or more and 25% by mass or less.

[0074] <Other ingredients>

[0075] The fluorine-containing functional elastomer material of the present invention may also contain other components within the range that does not impair the effects of the present invention. The other components may be appropriately selected according to the use and purpose of the target product. As the other components, various auxiliary agents such as antioxidants, lubricants, light stabilizers, colorants, flame retardants, etc. may be cited.

[0076] Examples of the flame retardant include halogen-free flame retardants, specifically, melamine cyanurate, melamine polyphosphate, hypophosphite, ammonium polyphosphate, and the like.

[0077] Examples of the colorant include toner and color concentrate.

[0078] Examples of the light stabilizer include Light Stabilizer 622, Light Stabilizer 770, and Light Stabilizer 944.

[0079] Examples of the lubricant include oleamide, erucamide, and the like.

[0080] Examples of the antioxidant include Antioxidant 1010 and Antioxidant 1076.

[0081] The above-mentioned other components may be used alone or in combination of two or more.

[0082] <Purpose>

[0083] Examples of uses of the fluorine-containing functional elastomer material of the present invention include soft touch materials, and specifically, mouse surface covering materials, USB cable covering materials, and the like.

[0084] When the fluorine-containing functional elastomer material of the present invention is used to manufacture the mouse surface coating material, the manufacturing method can be generally used. Specifically, the above raw materials for manufacturing the mouse surface coating material are weighed at the above content, the raw materials except the filler oil are mixed at high speed in a high-speed mixer for 3 to 5 minutes, and the filler oil is added, and further fully mixed for 1 to 2 minutes, and then the mixture is added to a twin-screw extruder with an aspect ratio of 40 to 55, melt-extruded and granulated at a molding temperature of 150 to 220° C., and dried to obtain a modified material of the mouse surface coating material, and the obtained modified material is melt-plasticized at 200 to 225° C. using an injection molding machine to obtain a mouse.

[0085] In addition, when the fluorine-containing functional elastomer material of the present invention is used to manufacture a USB cable sheathing material, it can be manufactured by a common method. Specifically, the above-mentioned raw materials for manufacturing the USB cable sheathing material are weighed at the above-mentioned content, and the raw materials except the filler oil are mixed at high speed in a high-speed mixer for 3 to 5 minutes, and then the filler oil is added, and further fully mixed for 1 to 2 minutes, and then the mixture is added to a twin-screw extruder with an aspect ratio of 40 to 55, and melt-extruded and granulated at a molding temperature of 150 to 220°C, and dried to obtain a modified material of the USB cable sheathing material.

[0086] Example

[0087] Hereinafter, the present invention will be described in more detail by way of examples, but the present invention is not limited to these examples. In addition, "%" means "mass %" unless otherwise specified.

[0088] (Experiment 1)

[0089] Examples 1, 2-1 to 2-7 and Comparative Examples 1-1 to 1-2, 2-1 to 2-2

[0090] According to the composition and amount shown in Table 1, the raw materials of the mouse surface coating material were weighed, and the raw materials except the filler oil were mixed at high speed for 3 to 5 minutes in a high-speed mixer (model: BL-L25-5D V-type mixer, manufacturer: Dongguan Bailong Machinery Equipment Co., Ltd., the same below), and then the filler oil was added and further mixed for 1 to 2 minutes. Thereafter, the mixture was added to a twin-screw extruder (model: CTE-35PLUS, manufacturer: Coperion Keya (Nanjing) Machinery Co., Ltd., L / D=44, the same below), melt extruded and granulated at a molding temperature of 150~220℃, and dried to obtain a modified material of the mouse surface coating material. Then, an injection molding machine (model: E120-SVP12, manufacturer: Guangdong Zhende Plastic Machinery Co., Ltd., the same below) was used to make a sample plate of 3cm×10cm and 0.2cm in thickness at a molding temperature of 160~230℃. Then, the obtained modified material was melt-plasticized at 200~225℃ by an injection molding machine to obtain a mouse.

[0091] Using the sample plates and mice prepared in the above-mentioned Examples 1, 2-1 to 2-7 and Comparative Examples 1-1 to 1-2, 2-1 to 2-2, various performance evaluations were performed according to the following methods.

[0092] <Feel>

[0093] The sample plate prepared in Comparative Example 1-1 was used as a blank sample. Professional evaluators touched the prepared test plates and the blank sample with their hands and evaluated the hand feel based on the following evaluation criteria. The obtained results are shown in Table 2 below.

[0094] ○: No difference in feel compared to the blank sample

[0095] △: Compared with the blank sample, the feel is somewhat different, but acceptable

[0096] ×: Compared with the blank sample, the feel is quite different and unacceptable

[0097] <Contact Angle>

[0098] Using a contact angle tester (model: DSA30 contact angle tester, manufacturer: KRUSS, Germany), 2 μl of deionized water and 2 μl of n-hexadecane were added dropwise on the surface of each sample plate at room temperature (25° C.), and the contact angles of deionized water and n-hexadecane on the surface of each sample plate were tested respectively. The results are shown in Table 2 below.

[0099] <Antifouling properties>

[0100] The antifouling properties of each of the prepared sample plates were evaluated in the following manner using ketchup, mustard sauce, lipstick, and a marker.

[0101] ① Ketchup, mustard sauce

[0102] The stain was evenly applied to each sample plate, left to stand for 2 minutes, rinsed with tap water, dried and left to stand for 30 minutes, and the color difference value ΔE1 of each sample plate was measured using a colorimeter (CR-400 handheld colorimeter manufactured by Konica Minolta, the same below). Then, 5 professional evaluators visually compared the sample plate after measuring the color difference value ΔE1 with a standard color plate (the standard color plate is the sample plate prepared in Comparative Example 1-1, the same below), determined the difference between it and the standard color plate based on the following evaluation criteria, and took the average value as the final score. The results obtained are shown in Table 2 below.

[0103] Then, a clean paper towel was soaked with 75% alcohol, and the paper towel was used to wipe 10 times. After standing for 30 minutes, the color difference value ΔE2 of each sample plate was measured using a colorimeter. Then, 5 professional evaluators compared the sample plate after the color difference value ΔE2 was measured with the standard color plate by visual inspection, and determined the difference between it and the standard color plate based on the following evaluation criteria, and took the average value as the final score. The obtained results are shown in the following Table 2.

[0104] The higher the ΔE, the easier it is for the stain to remain on the sample plate of this formula, and the worse its anti-fouling ability is. Preferably, ΔE<5, and most preferably, ΔE≤3.

[0105] ○1: No difference from the standard color palette

[0106] ○△2: There is a slight difference, and the difference is less than 10%

[0107] △3: There is a slight difference, and the difference is more than 10% and less than 30%

[0108] △×4: There is a significant difference, and the difference is more than 30% and less than 80%

[0109] ×5: There is a very obvious difference, the difference is greater than 80%

[0110] ② Lipstick

[0111] Use lipstick (TSTTIN'SECRET 009# color) to draw a line on each sample plate, let it stand for 2 minutes, then rinse with water, use a clean paper towel to wipe 10 times with medium strength, let it stand for 30 minutes, and then use a colorimeter to measure the color difference value ΔE of each sample plate. The obtained results are shown in the following Table 2.

[0112] Then, 5 professional evaluators visually compared the measured sample plate with the standard color plate, determined the difference between the sample plate and the standard color plate based on the same evaluation criteria as ① above, and took the average value as the final score. The obtained results are shown in Table 2 below.

[0113] ③Oil-based pen

[0114] Use a ZEBRA black oil-based pen to draw lines on each sample plate, let it stand for 2 minutes, and then use a clean paper towel to wipe it 10 times with medium strength. Five professional evaluators visually observe the oil-based pen residue and scratches, and evaluate based on the following evaluation criteria, and take the average value as the final score. The results are shown in the following Table 2.

[0115] ○1: Wipe away 100% of stains and no scratches

[0116] ○△2: 100% of the stain was removed by wiping, but scratches remain

[0117] △3: 80% of stains removed by wiping, scratches still present

[0118] △×4: 40-50% of the stains were removed by wiping, but there are still scratches

[0119] ×5: Most of the stain remains and cannot be wiped off

[0120] <Actual use evaluation>

[0121] ①Quick experience evaluation

[0122] Artificial grease was prepared according to ASTM D4265-14, and the obtained grease and dust were evenly applied to each sample plate. After standing for 2 minutes, the sample plates were wiped 10 times with 75% alcohol. After standing for 30 minutes, the color difference value of each sample plate was measured using a colorimeter (wherein the color difference value is preferably <7). The obtained results are shown in the following Table 2.

[0123] ②Long-term use evaluation

[0124] If the performance is significantly improved relative to the blank sample (the mouse is mainly based on the quick experience data, and the USB cable is based on the wiping situation of the oil pen), further long-term use evaluation will be carried out. Distribute each prepared mouse to at least 30 evaluators (50% of the evaluators are office staff and 50% of the laboratory staff), and let each evaluator use it normally for 1 month before testing. After 1 month, the appearance color of the mouse is visually compared with the standard color plate, and the products with a difference value of ≤3 of 60% or more with the standard color plate will be judged as "OK" (wherein, preferably 80% or more ≤3, more preferably 90% or more ≤3), and other cases will be judged as "NG". The results obtained are shown in Table 2 below.

[0125] [Table 1]

[0126]

[0127] *1: Product name: YH503, Manufacturer: Baling Petrochemical

[0128] *2: A fluorinated copolymer of C6FMA, CHMA and HEMA obtained by the method of Synthesis Example 3 described in JP-A-2014-223623

[0129] *3: Product name: Paraffin oil KP 6030, manufacturer: Kehua

[0130] *4: Product name: KF96-10000CS, manufacturer: Shin-Etsu Chemical Co., Ltd.

[0131] *5: Product name: HF 75AE, Manufacturer: Zhejiang Huafeng Thermoplastic Polyurethane Co., Ltd.

[0132] *6: The additives are composed of antioxidants and masterbatches. The antioxidant is 1010 manufactured by BASF, and the masterbatch is RT878 manufactured by Dongguan Zhongmin New Material Technology Co., Ltd.

[0133]

[0134] It can be seen from the above Table 2 that when the fluorine-containing functional elastomer material of the present invention contains components (A) to (C) (particularly preferably further contains components (D) and (E)), the obtained mouse surface covering material has a good feel, excellent anti-fouling properties against various pollutants, is easy to wipe, and can delay the time for the product to become dirty.

[0135] (Experiment 2)

[0136] Examples 3-1 to 3-2, 4-1 to 4-5 and Comparative Examples 3-1 to 3-2, 4

[0137] The raw materials of the USB cable sheathing material were weighed according to the composition and amount shown in Table 3, and the raw materials except the filler oil were mixed at high speed in a high-speed mixer for 3 to 5 minutes, and the filler oil was added and further mixed for 1 to 2 minutes. Thereafter, the mixture was added to a twin-screw extruder, melt-extruded and granulated at a molding temperature of 150 to 220°C, and dried to obtain a modified material of the USB cable sheathing material. Next, the obtained modified material was made into a sample plate of 3 cm × 10 cm and 0.2 cm thick using an injection molding machine at a molding temperature of 160 to 230°C.

[0138] The test plates prepared in Examples 3-1 to 3-2, 4-1 to 4-5 and Comparative Examples 3-1 to 3-2, 4 were used to perform various performance evaluations in the same manner as in Experiment 1. The results are shown in Table 4.

[0139] [Table 3]

[0140]

[0141] *1 to *4, 6 are the same as *1 to *4, *6 in the above-mentioned Table 1, respectively.

[0142] *7: Product name: H920Y, manufacturer: SK Electronics of South Korea

[0143] *8: Product name: PX-200, Manufacturer: Daihachi Chemical Industry Co., Ltd.

[0144]

[0145] As can be seen from Table 4 above, when the fluorine-containing functional elastomer material of the present invention comprises components (A) to (C) (particularly preferably further comprises component (D) and component (F)), the obtained USB cable covering material has a good feel, excellent antifouling properties against various pollutants, is easy to wipe, and can delay the time for the product to become dirty.

Claims

1. A fluorine-containing functional elastomer material, wherein: Contains the following ingredients (A) to (C), (A) styrene-based thermoplastic elastomer; (B) a fluorinated copolymer obtained by copolymerizing a monomer mixture containing the following monomers (b1) to (b3), (b1)CH2=C(-CH3)-C(=O)-O-(CH2)2-(CF2)5CF3, (b2) cyclohexyl methacrylate, (b3) 2-hydroxyethyl methacrylate; (C) Filling oil, The content of the component (A) is 15 to 35% by mass, the content of the component (B) is 0.5 to 10% by mass, and the content of the component (C) is 10 to 30% by mass, relative to 100% by mass of the fluorinated functional elastomer material.

2. The fluorine-containing functional elastomer material according to claim 1, wherein The component (A) is a styrene-ethylene-butylene-styrene block copolymer.

3. The fluorinated functional elastomer material according to claim 1 or 2, wherein The content of the component (B) is 3 to 9 mass % based on 100 mass % of the fluorinated functional elastomer material.

4. The fluorinated functional elastomer material according to claim 1 or 2, wherein The content of the component (B) is 3 to 6 mass % relative to 100 mass % of the fluorinated functional elastomer material.

5. The fluorinated functional elastomer material according to claim 1 or 2, wherein It also contains component (D) organic silicone.

6. The fluorine-containing functional elastomer material according to claim 5, wherein The component (D) is a polydimethylsiloxane represented by the following general formula (2): (C2H6OSi) n (2) In the formula, n represents a number in the range of 1,000 to 20,000.

7. The fluorine-containing functional elastomer material according to claim 5, wherein The content of the component (D) is 0.5 to 10% by mass based on 100% by mass of the fluorinated functional elastomer material.

8. The fluorine-containing functional elastomer material according to claim 5, wherein The content of the component (D) is 0.5 to 5% by mass based on 100% by mass of the fluorinated functional elastomer material.

9. The fluorine-containing functional elastomer material according to claim 1 or 2, wherein The composition further comprises a thermoplastic polyurethane elastomer as a component (E).

10. The fluorine-containing functional elastomer material according to claim 9, wherein The component (E) is (A'B') m Type block linear polymers, A' is a polyester or polyether with a molecular weight of 1000-6000, B' is a diol having a linear alkyl group with 2-12 carbon atoms, the chemical structure between the A'B' segments is a diisocyanate, and m is a number of 1-200.

11. The fluorine-containing functional elastomer material according to claim 1 or 2, wherein The fluorine-containing functional elastomer material is used as a mouse surface coating material.

12. The fluorine-containing functional elastomer material according to claim 11, wherein The content of the component (A) is 15 to 30% by mass based on 100% by mass of the fluorinated functional elastomer material.

13. The fluorine-containing functional elastomer material according to claim 11, wherein The content of the component (A) is 18 to 26 mass % relative to 100 mass % of the fluorinated functional elastomer material.

14. The fluorine-containing functional elastomer material according to claim 11, wherein The content of the component (E) is 20 to 50% by mass based on 100% by mass of the fluorinated functional elastomer material.

15. The fluorine-containing functional elastomer material according to claim 11, wherein The content of the component (E) is 25 to 45% by mass based on 100% by mass of the fluorinated functional elastomer material.

16. The fluorine-containing functional elastomer material according to claim 1 or 2, wherein: Also included is a component (F) of polyolefin.

17. The fluorine-containing functional elastomer material according to claim 16, wherein The component (F) is polypropylene.

18. The fluorine-containing functional elastomer material according to claim 16, wherein The fluorine-containing functional elastomer material is used for USB cable covering material.

19. The fluorine-containing functional elastomer material according to claim 18, wherein The content of the component (A) is 18 to 30% by mass based on 100% by mass of the fluorinated functional elastomer material.

20. The fluorine-containing functional elastomer material according to claim 18, wherein The content of the component (A) is 25 to 30% by mass based on 100% by mass of the fluorinated functional elastomer material.

21. The fluorine-containing functional elastomer material according to claim 18, wherein The content of the component (F) is 10 to 40% by mass based on 100% by mass of the fluorine-containing functional elastomer material.

22. The fluorine-containing functional elastomer material according to claim 18, wherein The content of the component (F) is 13 to 30% by mass based on 100% by mass of the fluorine-containing functional elastomer material.

23. A mouse surface coating material, wherein: Made of the fluorine-containing functional elastomer material according to any one of claims 1 to 15.

24. A USB cable coating material, wherein: Made of the fluorine-containing functional elastomer material according to any one of claims 16 to 22.

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