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Environmentally-friendly hot-melt pressure sensitive adhesive and preparation method thereof

A hot-melt pressure-sensitive adhesive, environmentally friendly technology, used in adhesives, adhesive types, mineral oil hydrocarbon copolymer adhesives, etc., can solve the problem of affecting the adhesion performance of hot-melt pressure-sensitive adhesives and weakening system compatibility and other problems, to achieve the effect of increasing the layer spacing, reducing the amount of gel, and improving thermal stability

Pending Publication Date: 2019-08-06
黄敏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, whether it is introducing polar groups on the diene block or adding hydrophilic components to the system, it will significantly weaken the compatibility of the system and affect the adhesion performance of hot-melt pressure-sensitive adhesives.

Method used

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  • Environmentally-friendly hot-melt pressure sensitive adhesive and preparation method thereof

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preparation example Construction

[0059] The preparation method of described environment-friendly type hot-melt adhesive, comprises the steps:

[0060] Step 1. Mix the thermoplastic elastomer and plasticizer evenly, and let stand for 2 hours;

[0061] Step 2. Heat the above mixture until it melts, add modified petroleum resin, natural tackifying resin and coupling agent, control the temperature at 160-180°C, and stir at a constant speed of 300r / min for 30-40min;

[0062] Step 3: Add antioxidant, continue to stir for 10-12 minutes, keep warm for 20 minutes, discharge while hot, and cool to prepare hot-melt pressure-sensitive adhesive.

Embodiment 1

[0064] Environmentally friendly hot-melt pressure-sensitive adhesive, made of the following raw materials in parts by weight: 25 parts of styrene-butadiene-styrene, 28 parts of modified petroleum resin, 6 parts of rosin resin, 12 parts of plasticizer, modified filler 2 parts, 0.2 parts of silane coupling agent, 0.2 parts of 2,6-di-tert-butyl-p-cresol;

[0065] The plasticizer is a composition composed of liquid paraffin and dibutyl phthalate in a mass ratio of 2:1.

Embodiment 2

[0069] The environment-friendly hot-melt pressure-sensitive adhesive is made of the following raw materials in parts by weight: 28 parts of styrene-isoprene-styrene, 31 parts of modified petroleum resin, 7.5 parts of terpene resin, 15 parts of plasticizer, modified 2.3 parts of permanent filler, 0.24 parts of silane coupling agent, 0.23 parts of tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester;

[0070] The plasticizer is a composition composed of liquid paraffin and dibutyl phthalate in a mass ratio of 2:1.

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Abstract

The invention discloses an environmentally-friendly hot-melt pressure sensitive adhesive. The environmentally-friendly hot-melt pressure sensitive adhesive is prepared from, by weight, 25-35 parts ofa thermoplastic elastomer, 28-36 parts of modified petroleum resin, 6-10 parts of natural tackifying resin, 12-20 parts of a plasticizer, 2-3 parts of a modifying filler, 0.2-0.3 part of a coupling agent and 0.2-0.3 part of an antioxidant. The present invention also discloses preparation method of the hot-melt pressure sensitive adhesive. The thermoplastic elastomer is used as a matrix for the hot-melt pressure sensitive adhesive, the modified petroleum resin and the natural tackifying resin are used as tackifying resins, and no organic solvent is needed, so the raw materials are safe and environmentally friendly; the petroleum resin is modified, so the compatibility of the petroleum resin and the thermoplastic elastomer is improved, and the thermal stability of the hot-melt pressure sensitive adhesive is improved; and the reinforcing effect of the modifying filler improves the initial viscosity, the glass strength and the thermal stability of the hot-melt pressure sensitive adhesive are improved, so the environmentally-friendly hot-melt pressure sensitive adhesive with excellent performances is prepared.

Description

technical field [0001] The invention belongs to the technical field of hot-melt pressure-sensitive adhesives, and in particular relates to an environment-friendly hot-melt pressure-sensitive adhesive and a preparation method thereof. Background technique [0002] Pressure sensitive adhesive (PSA) refers to a type of adhesive that is sensitive to pressure and can be bonded to the adherend with a little finger pressure without the use of solvents or other auxiliary means. Hot-melt pressure-sensitive adhesives are the third-generation pressure-sensitive adhesive products after solvent-based and emulsion-type pressure-sensitive adhesives. Compared with the previous two, hot-melt pressure-sensitive adhesives are solvent-free, which is more conducive to environmental protection and safe production, and has high production efficiency. , The production cost is relatively low, so countries around the world are vigorously developing hot-melt pressure-sensitive adhesives. [0003] Hot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J157/02C09J153/02C09J193/04C09J11/04
CPCC08L2201/08C08L2205/03C08L2207/04C09J11/04C09J157/02C08L53/02C08L93/04C08K13/06C08K9/08C08K9/04C08K3/346
Inventor 黄敏施志翠
Owner 黄敏
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