WO2021208507A1 - 一种雾面热熔胶及其制备方法 - Google Patents

一种雾面热熔胶及其制备方法 Download PDF

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WO2021208507A1
WO2021208507A1 PCT/CN2020/140462 CN2020140462W WO2021208507A1 WO 2021208507 A1 WO2021208507 A1 WO 2021208507A1 CN 2020140462 W CN2020140462 W CN 2020140462W WO 2021208507 A1 WO2021208507 A1 WO 2021208507A1
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hot melt
melt adhesive
matte
parts
weight
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PCT/CN2020/140462
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French (fr)
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何建雄
杨博
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何建雄
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J167/00—Adhesives based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Adhesives based on derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02—Non-macromolecular additives
    • C09J11/04—Non-macromolecular additives inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02—Non-macromolecular additives
    • C09J11/06—Non-macromolecular additives organic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/08—Macromolecular additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/002—Physical properties
    • C08K2201/005—Additives being defined by their particle size in general
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00—Properties characterising the ingredient of the composition
    • C08L2207/04—Thermoplastic elastomer

Definitions

  • the invention belongs to the technical field of polymer materials, and relates to a matte hot melt adhesive and a preparation method thereof.
  • Hot melt adhesives can be used to bond photoelectric devices, electronic products, home appliances, furniture, etc.
  • the application of polyester hot melt adhesives in this field has attracted attention.
  • the current polyester hot melt adhesives still have some shortcomings, such as low temperature For example, it is brittle and easy to crack at -10°C, and has poor adhesion to metals and epoxy resins.
  • some hot melt adhesives do not have matte properties.
  • For the used devices, especially organic electroluminescent devices Enhance its reflectivity, making it necessary to perform matte or matte treatment.
  • the purpose of the present invention is to provide a matte hot melt adhesive and a preparation method thereof.
  • the present invention adopts the following technical solutions:
  • the present invention provides a matte hot melt adhesive.
  • the raw material of the matte hot melt adhesive includes the following components in parts by weight:
  • the matting agent is a mixture composed of EPDM rubber, nitrile rubber and SEBS.
  • the polyester hot melt adhesive itself has poor low-temperature toughness and is brittle, while the use of thermoplastic polyurethane elastomer and matting agent can give the polyester hot melt adhesive better toughness and solve the problem of brittleness.
  • the matting agent Give hot melt adhesive a matte matte performance.
  • the invention adopts a reasonable combination of polyester hot melt adhesive, thermoplastic polyurethane elastomer, and matting agent, so that the hot melt adhesive has good flexibility, good mechanical properties, high stability, is not easy to crack at low temperature, and has good bonding performance. , At the same time has a good matte matte effect.
  • the amount of the polyester hot melt adhesive can be 50 parts by weight, 52 parts by weight, 55 parts by weight, 57 parts by weight, 59 parts by weight, 60 parts by weight, 62 parts by weight, 65 parts by weight, 67 parts by weight, 69 parts by weight, or 70 parts by weight.
  • the amount of the thermoplastic polyurethane elastomer can be 5 parts by weight, 5.5 parts by weight, 6 parts by weight, 6.5 parts by weight, 7 parts by weight, 7.5 parts by weight, 8 parts by weight, 8.5 parts by weight. Parts by weight, 9 parts by weight, 9.5 parts by weight, or 10 parts by weight.
  • the amount of the matte agent can be 10 parts by weight, 12 parts by weight, 15 parts by weight, 18 parts by weight, 20 parts by weight, 22 parts by weight, 24 parts by weight, and 26 parts by weight. Parts, 28 parts by weight or 30 parts by weight.
  • the amount of the antioxidant can be 0.1 parts by weight, 0.2 parts by weight, 0.3 parts by weight, 0.4 parts by weight or 0.5 parts by weight.
  • the amount of CaCO 3 can be 1 part by weight, 1.3 parts by weight, 1.5 parts by weight, 1.8 parts by weight, 2 parts by weight, 2.3 parts by weight, 2.5 parts by weight, 2.8 parts by weight, or 3 parts by weight.
  • the amount of the talc powder can be 1 part by weight, 1.3 parts by weight, 1.5 parts by weight, 1.8 parts by weight, 2 parts by weight, 2.3 parts by weight, 2.5 parts by weight, 2.8 parts by weight or 3 parts by weight.
  • the amount of EVA (ethylene-vinyl acetate copolymer) can be 10 parts by weight, 12 parts by weight, 14 parts by weight, 15 parts by weight, 16 parts by weight, 18 parts by weight or 20 parts by weight.
  • the polyester hot melt adhesive, the thermoplastic polyurethane elastomer, and the matting agent need to meet the dosage relationship in order to ensure a better technical effect.
  • the matting agent is a mixture composed of EPDM, nitrile rubber and SEBS.
  • the synergistic effect of the three can improve the matte matt performance of the matte hot melt adhesive, and can also be combined with The other components are well matched to ensure good mechanical properties and bonding properties.
  • the weight ratio of EPDM, nitrile rubber and SEBS in the matting agent is 1:(1-5):(3-8), for example, 1:1:3, 1:1:4 , 1: 1: 5, 1: 1: 6, 1: 1: 7, 1: 1: 8, 1: 2: 3, 1: 2: 5, 1: 2: 7, 1: 2: 8, 1 : 3:3:3, 1:3:4, 1:3:5, 1:3:7, 1:3:8, 1:3:6, 1:4:3, 1:4:4, 1:4 : 5, 1: 4: 6, 1: 4: 7, 1: 4: 8, 1: 5: 3, 1: 5: 4, 1: 5: 5, 1: 5: 6, 1: 5: 7 , 1:5:8, etc.
  • the polyester hot melt adhesive is a polyester hot melt adhesive formed by polymerization of terephthalic acid, isophthalic acid, butylene glycol, and diethylene glycol.
  • thermoplastic polyurethane elastomer is selected from a polyurethane elastomer formed by the polymerization of 1,6-hexanediol adipate diol, butylene adipate diol and HDI, or Polyurethane elastomer formed by polymerization of 1,6-hexanediol ester diol, butanediol adipate diol and MDI.
  • the antioxidant is selected from antioxidant 1010 and/or antioxidant 1076.
  • the average particle size of the CaCO 3 is 4000-7000 mesh, for example 4000 mesh, 4300 mesh, 4500 mesh, 4800 mesh, 5000 mesh, 5300 mesh, 5500 mesh, 5800 mesh, 6000 mesh, 6300 mesh, 6500 mesh , 6800 mesh, 7000 mesh.
  • the average particle size of the talc powder is 4000-7000 mesh, for example 4000 mesh, 4300 mesh, 4500 mesh, 4800 mesh, 5000 mesh, 5300 mesh, 5500 mesh, 5800 mesh, 6000 mesh, 6300 mesh, 6500 mesh , 6800 mesh, 7000 mesh.
  • the VA content in the EVA is 10-20%, such as 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19% or 20%.
  • the present invention provides a preparation method of the matte hot melt adhesive as described above, and the preparation method is:
  • the polyester hot melt adhesive, the thermoplastic polyurethane elastomer, the matte agent, the antioxidant, the CaCO 3 , the talc and the EVA are uniformly mixed, melt blended, extruded, pelletized, and dried to obtain the matte hot melt adhesive.
  • the temperature of the melt blending is 100-200°C, for example 100°C, 110°C, 120°C, 130°C, 140°C, 150°C, 160°C, 170°C, 180°C, 190°C or 200°C.
  • the drying is performed in a vacuum oven.
  • the drying temperature is 70-80°C, such as 70°C, 72°C, 74°C, 75°C, 77°C, 79°C or 80°C.
  • the drying time is 5-18 hours, such as 5 hours, 7 hours, 9 hours, 10 hours, 12 hours, 14 hours, 16 hours or 18 hours.
  • the matte hot melt adhesive of the present invention can be used for the bonding of optoelectronic devices, electronic products, home appliances, furniture, etc., can ensure the mechanical properties, stability and bonding performance of the hot melt adhesive, and has a good matte matte finish Effect.
  • the present invention has the following beneficial effects:
  • the invention adopts a reasonable combination of polyester hot melt adhesive, thermoplastic polyurethane elastomer, and matting agent, so that the hot melt adhesive has good flexibility, good mechanical properties, high stability, is not easy to crack at low temperature, and has good bonding performance. , At the same time has a good matte matte effect.
  • Polyester hot melt adhesive white particle material, melting point 120°C, 160°C melt index 24 ⁇ 3g/10min, product brand JCC-3115, Shanghai Tianyang Hot Melt Adhesive Material Co., Ltd.;
  • Thermoplastic polyurethane hot melt adhesive transparent particle material, melting point 90°C, product brand 5013-2, Taizhou Fe Of Polymer Material Co., Ltd.
  • EPDM rubber Dow 3722P, USA.
  • Nitrile rubber Nitrile rubber 1051, Dongguan Mingyuan Plastic Co., Ltd.
  • SEBS American Kraton KRATON TM G1650E.
  • a matte hot melt adhesive is provided, and the raw material of the matte hot melt adhesive includes the following components in parts by weight:
  • the matting agent is a mixture of EPDM rubber (Dow 3722P, USA), nitrile rubber (1051) and SEBS (KRATON TM G1650E, USA) in a weight ratio of 1:1:3.
  • polyester hot melt adhesive thermoplastic polyurethane elastomer, matting agent and antioxidant are mixed uniformly, melted, blended and extruded at 120°C, pelletized, and dried at 75°C for 10 hours to obtain the matte hot melt glue.
  • a matte hot melt adhesive is provided, and the raw material of the matte hot melt adhesive includes the following components in parts by weight:
  • the matting agent is a mixture of EPDM rubber (Dow 3722P, USA), nitrile rubber (1051) and SEBS (KRATON TM G1650E, USA) in a weight ratio of 1:3:5.
  • polyester hot melt adhesive thermoplastic polyurethane elastomer, matting agent and antioxidant are mixed uniformly, melted, blended and extruded at 180°C, pelletized, and dried at 80°C for 18 hours to obtain the matte hot melt glue.
  • a matte hot melt adhesive is provided, and the raw material of the matte hot melt adhesive includes the following components in parts by weight:
  • the matting agent is a mixture of EPDM rubber (Dow 3722P, USA), nitrile rubber (1051) and SEBS (KRATON TM G1650E, USA) in a weight ratio of 1:5:3.
  • polyester hot melt adhesive thermoplastic polyurethane elastomer, matting agent and antioxidant are mixed uniformly, melted, blended and extruded at 150°C, pelletized, and dried at 70°C for 15 hours to obtain the matte hot melt glue.
  • a matte hot melt adhesive is provided, and the raw material of the matte hot melt adhesive includes the following components in parts by weight:
  • the matting agent is a mixture composed of EPDM rubber (Dow 3722P, USA), nitrile rubber (1051) and SEBS (KRATON TM G1650E, USA) in a weight ratio of 1:2:7.
  • polyester hot melt adhesive thermoplastic polyurethane elastomer, matting agent and antioxidant are mixed uniformly, melted, blended and extruded at 100°C, pelletized, and dried at 75°C for 8 hours to obtain the matte hot melt glue.
  • a matte hot melt adhesive is provided, and the raw material of the matte hot melt adhesive includes the following components in parts by weight:
  • the matting agent is a mixture of EPDM (Dow 3722P, USA), nitrile rubber (1051) and SEBS (KRATON TM G1650E, USA) in a weight ratio of 1:4:8.
  • polyester hot melt adhesive thermoplastic polyurethane elastomer, matting agent and antioxidant are mixed uniformly, melted, blended and extruded at 200°C, pelletized, and dried at 80°C for 5 hours to obtain the matte hot melt glue.
  • Example 1 The only difference between this comparative example and Example 1 is that the raw material of the hot melt adhesive does not include a matting agent.
  • This comparative example is different from Example 1 only in that the raw material of the hot melt adhesive does not include thermoplastic polyurethane elastomer.
  • This comparative example is different from Example 1 only in that the matting agent only contains EPDM rubber (Dow 3722P, USA) and nitrile rubber (1051), and the weight ratio of the two is 1:1.
  • Example 1 The only difference between this comparative example and Example 1 is that the matting agent only contains EPDM (Dow 3722P, USA) and SEBS (KRATON TM G1650E, USA), and the weight ratio of the two is 1:3 .
  • This comparative example is different from Example 1 only in that the matting agent only contains nitrile rubber (1051) and SEBS (KRATON TM G1650E), and the weight ratio of the two is 1:3.
  • This comparative example is different from Example 1 only in that the matting agent only includes EPDM rubber (Dow 3722P, USA).
  • This comparative example is different from Example 1 only in that the matting agent only includes nitrile rubber (1051).
  • This comparative example is different from Example 1 only in that the matte only includes SEBS (KRATON TM G1650E).
  • the tensile strength and elongation at break are measured according to ISO-527, the impact strength is measured according to GB/T1843-2008, and the surface gloss at 20°, 60° and 85° is measured according to GB/T8807-1988 (matte effect) ).
  • Example 1 From the comparison between Example 1 and Comparative Example 1, it can be seen that without using the matting agent of the present invention, the mechanical properties of the hot melt adhesive will be slightly reduced. Although the mechanical properties can meet the requirements, its It does not have the matte effect, and the thermoplastic polyurethane elastomer is not used in Comparative Example 2. Although it has a better matte effect, its mechanical properties are greatly lost. In Comparative Example 3 to Comparative Example 8, a matte agent is used. However, compared with the present invention, the matte agent only uses a combination of two or only one, the matte effect becomes worse, and it will also have a certain impact on the mechanical properties.
  • the present invention uses the above-mentioned embodiments to illustrate the matte hot melt adhesive of the present invention and the preparation method thereof, but the present invention is not limited to the above-mentioned embodiments, which does not mean that the present invention must rely on the above-mentioned embodiments to be implemented.
  • Those skilled in the art should understand that any improvement of the present invention, the equivalent replacement of each raw material of the product of the present invention, the addition of auxiliary components, the selection of specific methods, etc. fall within the scope of protection and disclosure of the present invention.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
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  • Adhesives Or Adhesive Processes (AREA)

Abstract

本发明提供一种雾面热熔胶及其制备方法，所述雾面热熔胶的原料以重量份计包括以下组分：聚酯热熔胶50-70重量份、热塑性聚氨酯弹性体5-10重量份、雾面剂10-30重量份、抗氧剂0.1-0.5重量份；所述雾面剂为三元乙丙橡胶、丁腈橡胶和SEBS组成的混合物。本发明采用聚酯热熔胶、热塑性聚氨酯弹性体、雾面剂三者的合理配合，使得热熔胶柔韧性好，力学性能好，稳定性高，在低温下不易开裂，并且粘结性能好，同时具有良好的雾面哑光效果。

Description

一种雾面热熔胶及其制备方法
本公开基于申请号为202010298556.9，申请日为2020年04月16日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本发明属于高分子材料技术领域，涉及一种雾面热熔胶及其制备方法。
背景技术
热熔胶可以用于光电器件、电子产品、家电、家具等的部件粘结，在本领域聚酯热熔胶的应用受到关注，然而目前的聚酯热熔胶还存在一些缺点，比如在低温如-10℃下发脆，易开裂，且对金属、环氧树脂等的粘结效果不佳，其次一些热熔胶并不具备哑光性能，对于使用的器件，尤其是有机电致发光器件，增强了其反光度，使得必须进行消光或者哑光处理。
现有技术中也报道了一些方法来达到消光的效果，然而这些方法也存在着一些缺陷，例如为了增加雾面哑光的效果，往往会损失材料的力学性能、热稳定性以及热熔胶的粘结性能等。
因此，在本领域中，期望开发一种既能够具有雾面哑光效果，又能保证热熔胶的力学性能、稳定性以及粘结性能的材料。
发明内容
针对现有技术的不足，本发明的目的在于提供一种雾面热熔胶及其制备方法。
为达此目的，本发明采用以下技术方案：
一方面，本发明提供一种雾面热熔胶，所述雾面热熔胶的原料以重量份计 包括以下组分：
Figure PCTCN2020140462-appb-000001
所述雾面剂为三元乙丙橡胶、丁腈橡胶和SEBS组成的混合物。
在本发明中聚酯热熔胶本身其低温韧性差，发脆，而使用热塑性聚氨酯弹性体和雾面剂可以赋予聚酯热熔胶更好的韧性，解决发脆的问题，同时雾面剂赋予热熔胶以雾面哑光性能。本发明采用聚酯热熔胶、热塑性聚氨酯弹性体、雾面剂三者的合理配合，使得热熔胶柔韧性好，力学性能好，稳定性高，在低温下不易开裂，并且粘结性能好，同时具有良好的雾面哑光效果。
在本发明的雾面热熔胶中，所述聚酯热熔胶的用量可以为50重量份、52重量份、55重量份、57重量份、59重量份、60重量份、62重量份、65重量份、67重量份、69重量份或70重量份。
在本发明的雾面热熔胶中，所述热塑性聚氨酯弹性体的用量可以为5重量份、5.5重量份、6重量份、6.5重量份、7重量份、7.5重量份、8重量份、8.5重量份、9重量份、9.5重量份或10重量份。
在本发明的雾面热熔胶中，所述雾面剂的用量可以为10重量份、12重量份、15重量份、18重量份、20重量份、22重量份、24重量份、26重量份、28重量份或30重量份。
在本发明的雾面热熔胶中，所述抗氧剂的用量可以为0.1重量份、0.2重量份、0.3重量份、0.4重量份或0.5重量份。
在本发明中，所述CaCO 3的用量可以为1重量份、1.3重量份、1.5重量份、1.8重量份、2重量份、2.3重量份、2.5重量份、2.8重量份或3重量份。
在本发明中，所述滑石粉的用量可以为1重量份、1.3重量份、1.5重量份、1.8重量份、2重量份、2.3重量份、2.5重量份、2.8重量份或3重量份。
在本发明中，所述EVA(乙烯-乙酸乙烯共聚物)的用量可以为10重量份、12重量份、14重量份、15重量份、16重量份、18重量份或20重量份。
在本发明中发现，所述聚酯热熔胶、热塑性聚氨酯弹性体、雾面剂三者需要满足所述的用量关系，才能保证达到较好的技术效果。
在本发明中，所述雾面剂为三元乙丙橡胶、丁腈橡胶和SEBS组成的混合物，三者协同作用才能一起提高所述雾面热熔胶的雾面哑光性能，也才能与其他组分良好配合来保证良好的机械性能和粘结性能。
优选地，所述雾面剂中三元乙丙橡胶、丁腈橡胶和SEBS的重量比为1∶(1-5)∶(3-8)，例如1∶1∶3、1∶1∶4、1∶1∶5、1∶1∶6、1∶1∶7、1∶1∶8、1∶2∶3、1∶2∶5、1∶2∶7、1∶2∶8、1∶3∶3、1∶3∶4、1∶3∶5、1∶3∶7、1∶3∶8、1∶3∶6、1∶4∶3、1∶4∶4、1∶4∶5、1∶4∶6、1∶4∶7、1∶4∶8、1∶5∶3、1∶5∶4、1∶5∶5、1∶5∶6、1∶5∶7、1∶5∶8等。
在本发明中，所述聚酯热熔胶为对苯二甲酸、间苯二甲酸、丁二醇、二甘醇聚合而成的聚酯热熔胶。
在本发明中，所述热塑性聚氨酯弹性体选自由己二酸-1，6-己二醇酯二醇、己二酸丁二醇酯二醇与HDI聚合而成的聚氨酯弹性体，或者由己二酸-1，6-己二醇酯二醇、己二酸丁二醇酯二醇与MDI聚合而成的聚氨酯弹性体。
优选地，所述抗氧剂选自抗氧剂1010和/或抗氧剂1076。
优选地，所述CaCO 3的平均粒径为4000-7000目，例如4000目、4300目、4500目、4800目、5000目、5300目、5500目、5800目、6000目、6300目、6500目、6800目、7000目。
优选地，所述滑石粉的平均粒径为4000-7000目，例如4000目、4300目、4500目、4800目、5000目、5300目、5500目、5800目、6000目、6300目、6500目、6800目、7000目。
优选地，所述EVA中VA含量为10-20％，例如10％、11％、12％、13％、14％、15％、16％、17％、18％、19％或20％。
另一方面，本发明提供一种如上所述的雾面热熔胶的制备方法，所述制备方法为：
将聚酯热熔胶、热塑性聚氨酯弹性体、雾面剂、抗氧剂、CaCO 3、滑石粉和EVA混合均匀，熔融共混挤出，造粒，干燥，得到所述雾面热熔胶。
优选地，所述熔融共混的温度为100-200℃，例如100℃、110℃、120℃、130℃、140℃、150℃、160℃、170℃、180℃、190℃或200℃。
优选地，所述干燥在真空烘箱中进行。
优选地，所述干燥的温度为70-80℃，例如70℃、72℃、74℃、75℃、77℃、79℃或80℃。
优选地，所述干燥的时间为5-18小时，例如5小时、7小时、9小时、10小时、12小时、14小时、16小时或18小时。
本发明的雾面热熔胶可以用于光电器件、电子产品、家电、家具等的部件粘结，能保证热熔胶的力学性能、稳定性以及粘结性能，并且具有良好的雾面哑光效果。
相对于现有技术，本发明具有以下有益效果：
本发明采用聚酯热熔胶、热塑性聚氨酯弹性体、雾面剂三者的合理配合，使得热熔胶柔韧性好，力学性能好，稳定性高，在低温下不易开裂，并且粘结性能好，同时具有良好的雾面哑光效果。
具体实施方式
下面通过具体实施方式来进一步说明本发明的技术方案。
聚酯热熔胶：白色粒子料，熔点120℃，160℃熔融指数为24±3g/10min，产品牌号JCC-3115，上海天洋热熔粘接材料股份有限公司；
热塑性聚氨酯热熔胶：透明粒子料，熔点90℃，产品牌号5013-2，泰州菲尔特高分子材料有限公司。
三元乙丙橡胶：美国陶氏3722P。
丁腈橡胶：丁腈橡胶1051，东莞市铭远塑胶有限公司。
SEBS：美国科腾KRATON TM G1650E。
实施例1
在本实施例中提供一种雾面热熔胶，所述雾面热熔胶的原料以重量份计包括以下组分：
Figure PCTCN2020140462-appb-000002
所述雾面剂为三元乙丙橡胶(美国陶氏3722P)、丁腈橡胶(1051)和SEBS (美国科腾KRATON TM G1650E)按照重量比1∶1∶3组成的混合物。
通过如方法制备得到：
将聚酯热熔胶、热塑性聚氨酯弹性体、雾面剂和抗氧剂混合均匀，在120℃下熔融共混挤出，造粒，在75℃下干燥10小时，得到所述雾面热熔胶。
实施例2
在本实施例中提供一种雾面热熔胶，所述雾面热熔胶的原料以重量份计包括以下组分：
Figure PCTCN2020140462-appb-000003
所述雾面剂为三元乙丙橡胶(美国陶氏3722P)、丁腈橡胶(1051)和SEBS(美国科腾KRATON TM G1650E)按照重量比1∶3∶5组成的混合物。
通过如方法制备得到：
将聚酯热熔胶、热塑性聚氨酯弹性体、雾面剂和抗氧剂混合均匀，在180℃下熔融共混挤出，造粒，在80℃下干燥18小时，得到所述雾面热熔胶。
实施例3
在本实施例中提供一种雾面热熔胶，所述雾面热熔胶的原料以重量份计包括以下组分：
Figure PCTCN2020140462-appb-000004
Figure PCTCN2020140462-appb-000005
所述雾面剂为三元乙丙橡胶(美国陶氏3722P)、丁腈橡胶(1051)和SEBS(美国科腾KRATON TM G1650E)按照重量比1∶5∶3组成的混合物。
通过如方法制备得到：
将聚酯热熔胶、热塑性聚氨酯弹性体、雾面剂和抗氧剂混合均匀，在150℃下熔融共混挤出，造粒，在70℃下干燥15小时，得到所述雾面热熔胶。
实施例4
在本实施例中提供一种雾面热熔胶，所述雾面热熔胶的原料以重量份计包括以下组分：
Figure PCTCN2020140462-appb-000006
所述雾面剂为三元乙丙橡胶(美国陶氏3722P)、丁腈橡胶(1051)和SEBS(美国科腾KRATON TM G1650E)按照重量比1∶2∶7组成的混合物。
通过如方法制备得到：
将聚酯热熔胶、热塑性聚氨酯弹性体、雾面剂和抗氧剂混合均匀，在100℃下熔融共混挤出，造粒，在75℃下干燥8小时，得到所述雾面热熔胶。
实施例5
在本实施例中提供一种雾面热熔胶，所述雾面热熔胶的原料以重量份计包括以下组分：
Figure PCTCN2020140462-appb-000007
所述雾面剂为三元乙丙橡胶(美国陶氏3722P)、丁腈橡胶(1051)和SEBS(美国科腾KRATON TM G1650E)按照重量比1∶4∶8组成的混合物。
通过如方法制备得到：
将聚酯热熔胶、热塑性聚氨酯弹性体、雾面剂和抗氧剂混合均匀，在200℃下熔融共混挤出，造粒，在80℃下干燥5小时，得到所述雾面热熔胶。
对比例1
该对比例与实施例1的区别仅在于，所述热熔胶的原料中不包括雾面剂。
对比例2
该对比例与实施例1的区别仅在于，所述热熔胶的原料中不包括热塑性聚氨酯弹性体。
对比例3
该对比例与实施例1的区别仅在于，所述雾面剂中仅含有三元乙丙橡胶(美国陶氏3722P)和丁腈橡胶(1051)，二者重量比为1∶1。
对比例4
该对比例与实施例1的区别仅在于，所述雾面剂中仅含有三元乙丙橡胶(美国陶氏3722P)和SEBS(美国科腾KRATON TM G1650E)，二者重量比为1∶3。
对比例5
该对比例与实施例1的区别仅在于，所述雾面剂中仅含有丁腈橡胶(1051)和和SEBS(美国科腾KRATON TM G1650E)，二者重量比为1∶3。
对比例6
该对比例与实施例1的区别仅在于，所述雾面剂仅包括三元乙丙橡胶(美国陶氏3722P)。
对比例7
该对比例与实施例1的区别仅在于，所述雾面剂仅包括丁腈橡胶(1051)。
对比例8
该对比例与实施例1的区别仅在于，所述雾面剂仅包括SEBS(美国科腾KRATON TM G1650E)。
对实施例1-5以及对比例1-8的热熔胶进行性能测试，测试方法如下：
根据ISO-527测定拉伸强度和断裂伸长率，根据GB/T1843-2008测定抗冲击强度，根据GB/T8807-1988测定在20°、60°和85°下的表面光泽度(雾面效果)。
测试结果如表1所示。
表1
Figure PCTCN2020140462-appb-000008
通过实施例1与对比例1的对比可以看出，在不使用本发明所述雾面剂的情况下，所述热熔胶的力学性能会稍有下降，虽然力学性能能满足要求，但其不具备雾面效果，而对比例2中不使用热塑性聚氨酯弹性体，虽然具有较好的雾面效果，但其力学性能损失较大，而对比例3-对比例8中，使用雾面剂，但 是雾面剂与本发明相比，仅使用其中两种的组合或者仅使用一种，其雾面效果变差，并且也会对力学性能有一定影响。
申请人声明，本发明通过上述实施例来说明本发明的雾面热熔胶及其制备方法，但本发明并不局限于上述实施例，即不意味着本发明必须依赖上述实施例才能实施。所属技术领域的技术人员应该明了，对本发明的任何改进，对本发明产品各原料的等效替换及辅助成分的添加、具体方式的选择等，均落在本发明的保护范围和公开范围之内。

Claims (10)

  1. 一种雾面热熔胶，其特征在于，所述雾面热熔胶的原料以重量份计包括以下组分：
    Figure PCTCN2020140462-appb-100001
    所述雾面剂为三元乙丙橡胶、丁腈橡胶和SEBS组成的混合物。
  2. 根据权利要求1所述的雾面热熔胶，其特征在于，所述雾面剂中三元乙丙橡胶、丁腈橡胶和SEBS的重量比为1∶(1-5)∶(3-8)。
  3. 根据权利要求1或2所述的雾面热熔胶，其特征在于，所述聚酯热熔胶为对苯二甲酸、间苯二甲酸、丁二醇、二甘醇聚合而成的聚酯热熔胶。
  4. 根据权利要求1-3中任一项所述的雾面热熔胶，其特征在于，所述热塑性聚氨酯弹性体选自由己二酸-1，6-己二醇酯二醇、己二酸丁二醇酯二醇与HDI聚合而成的聚氨酯弹性体，或者由己二酸-1，6-己二醇酯二醇、己二酸丁二醇酯二醇与MDI聚合而成的聚氨酯弹性体。
  5. 根据权利要求1-4中任一项所述的雾面热熔胶，其特征在于，所述抗氧剂选自抗氧剂1010和/或抗氧剂1076；
    优选地，所述CaCO 3的平均粒径为4000-7000目；
    优选地，所述滑石粉的平均粒径为4000-7000目；
    优选地，所述EVA中VA含量为10-20％。
  6. 根据权利要求1-5中任一项所述的雾面热熔胶的制备方法，其特征在于，所述制备方法为：
    将聚酯热熔胶、热塑性聚氨酯弹性体、雾面剂、抗氧剂、CaCO 3、滑石粉和EVA混合均匀，熔融共混挤出，造粒，干燥，得到所述雾面热熔胶。
  7. 根据权利要求6所述的制备方法，其特征在于，所述熔融共混的温度为100-200℃。
  8. 根据权利要求6或7所述的制备方法，其特征在于，所述干燥在真空烘箱中进行。
  9. 根据权利要求6-8中任一项所述的制备方法，其特征在于，所述干燥的温度为70-80℃。
  10. 根据权利要求6-9中任一项所述的制备方法，其特征在于，所述干燥的时间为5-18小时。
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