Hot-melt pressure-sensitive adhesive for gas-permeable membrane and preparation method of hot-melt pressure-sensitive adhesive

A technology of hot-melt pressure-sensitive adhesive and breathable film, which is used in adhesives, epoxy resin adhesives, polyurea/polyurethane adhesives, etc. Hot melt pressure sensitive adhesive application and other issues, to achieve good temperature resistance, improve chemical resistance and anti-fouling, and prevent agglomeration.

Inactive Publication Date: 2020-10-02
嘉好(太仓)新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The biggest advantage of hot-melt pressure-sensitive adhesive is its low cost, but its disadvantage is that the viscosity is significantly affected by temperature
This also greatly limits the application of hot melt pressure sensitive adhesives
[0003] For example, at present, in the production process of the breathable film, hot-melt pressure-sensitive adhesive needs to be sprayed or scraped, but due to the poor heat resistance of the hot-melt pressure-sensitive adhesive, for example, it can only withstand the temperature of 60 ℃, which makes In winter, the double-sided tape has almost no stickiness and will be layered, but in summer, the glue on the surface of the double-sided tape will become hot and sticky, which greatly restricts the popularization and application of breathable membranes.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The hot-melt pressure-sensitive adhesive used for the breathable film in this example is prepared from raw materials including the following components and parts by weight: 40 parts of thermoplastic elastomer, 15 parts of toughened epoxy resin, 20 parts of tackifying resin, functional modified 1.6 parts of permanent graphene, 0.6 parts of antioxidant and 2 parts of crosslinking agent.

[0033] Wherein, the preparation method of toughened epoxy resin is as follows:

[0034] Step A): Prepare materials according to the following components and parts by weight: 82 parts of epoxy resin, 32 parts of toughened elastomer, 16 parts of compatibilizer, 0.5 part of coupling agent and 0.5 part of processing aid;

[0035] Step B): The toughened elastomer, 50% compatibilizer, coupling agent and processing aid are mixed evenly at 130°C by weight, and kept warm for 30 minutes, and then epoxy resin is added while stirring, After mixing evenly, cool naturally to room temperature to obtai...

Embodiment 2

[0047] The hot-melt pressure-sensitive adhesive used for the breathable membrane in this example is prepared from raw materials including the following components and parts by weight: 20 parts of thermoplastic elastomer, 8 parts of toughened epoxy resin, 25 parts of tackifying resin, functional modified 0.5 part of graphene, 0.1 part of antioxidant and 1 part of crosslinking agent.

[0048] Wherein, the preparation method of toughened epoxy resin is as follows:

[0049] Step A): Prepare materials according to the following components and parts by weight: 80 parts of epoxy resin, 20 parts of toughened elastomer, 10 parts of compatibilizer, 0.3 part of coupling agent and 0.6 part of processing aid;

[0050] Step B): The toughened elastomer, 50% compatibilizer, coupling agent and processing aid are mixed evenly at 120°C by weight, and kept warm for 45 minutes, and then epoxy resin is added while stirring, After mixing evenly, cool naturally to room temperature to obtain a premix...

Embodiment 3

[0059] The hot-melt pressure-sensitive adhesive used for the breathable membrane in this example is prepared from raw materials including the following components and parts by weight: 45 parts of thermoplastic elastomer, 20 parts of toughened epoxy resin, 35 parts of tackifying resin, functional modified 5 parts of permanent graphene, 1 part of antioxidant and 5 parts of crosslinking agent.

[0060] Wherein, the preparation method of toughened epoxy resin is as follows:

[0061] Step A): Prepare materials according to the following components and parts by weight: 90 parts of epoxy resin, 40 parts of toughened elastomer, 30 parts of compatibilizer, 1 part of coupling agent and 2 parts of processing aid;

[0062] Step B): The toughened elastomer, 50% compatibilizer, coupling agent and processing aid are mixed evenly at 120°C by weight, and kept warm for 45 minutes, and then epoxy resin is added while stirring, After mixing evenly, cool naturally to room temperature to obtain a ...

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PUM

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Abstract

The invention relates to a hot-melt pressure-sensitive adhesive for a breathable film and a preparation method of the hot-melt pressure-sensitive adhesive. The hot-melt pressure-sensitive adhesive isprepared from the following raw materials in parts by weight: 20-45 parts of a thermoplastic elastomer, 8-20 parts of toughened epoxy resin, 20-35 parts of tackifying resin, 0.5-5 parts of functionalized modified graphene, 0.1-1 part of an antioxidant and 1-5 parts of a cross-linking agent. The preparation process is simple in steps and good in controllability, and the prepared hot-melt pressure-sensitive adhesive is good in temperature resistance, has stable cohesiveness with polyethylene materials, is high in initial adhesion and good in permanent adhesion, and has a very good application prospect.

Description

technical field [0001] The invention belongs to the technical field of polymer adhesives, and relates to a hot-melt pressure-sensitive adhesive for a breathable film and a preparation method thereof. Background technique [0002] As we all know, hot-melt pressure-sensitive adhesive is a kind of pressure-sensitive adhesive, which is mainly made by mixing synthetic rubber, resin and rubber oil into a molten state and then coating it on substrates such as tissue paper, cloth or plastic film. A new type of adhesive tape. Specifically, hot-melt pressure-sensitive adhesives have dual characteristics of hot-melt and pressure-sensitive. It becomes liquid when heated to 130-200°C, and can be used by spraying, roller coating, scraping, etc. When cooled to room temperature, it becomes solid again, and a certain pressure can produce good bonding effect. The biggest advantage of hot-melt pressure-sensitive adhesive is its low cost, but its disadvantage is that the viscosity is signific...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J153/02C09J175/04C09J163/00C09J157/02C09J161/14C09J201/04C09J123/08C09J193/04C09J163/04C09J11/04C09J11/08C09J11/06
CPCC08L2201/08C08L2205/02C08L2205/025C08L2205/035C09J11/04C09J11/06C09J11/08C09J123/0815C09J153/025C09J161/14C08L75/04C08L63/00C08L53/02C08L57/02C08L45/02C08K13/06C08K9/06C08K3/042C08K5/098C08L53/025C08L101/04C08L93/04C08L63/04C08L61/14
Inventor 史云霓朱志祥王敏
Owner 嘉好(太仓)新材料股份有限公司
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