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Fast curing reaction type hot melt adhesive and preparation method thereof

A fast-curing, reactive technology, applied in the direction of adhesive additives, non-polymer adhesive additives, polymer adhesive additives, etc., can solve the problems of complex preparation process, long curing time, low cohesion, etc. Achieve the effect of simple process, short curing time and good flexibility

Active Publication Date: 2013-04-17
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to optimize the technology of combining adhesive formula, improve the problems of long curing time, poor initial viscosity, low cohesive degree, complicated preparation process and high cost of existing reactive hot melt adhesives, and provide a fast curing speed, Reactive hot melt adhesive with high initial viscosity, high bonding strength, environmental protection and pollution-free

Method used

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  • Fast curing reaction type hot melt adhesive and preparation method thereof
  • Fast curing reaction type hot melt adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] In terms of weight percentage, the content of relevant components involved in a fast-curing reactive hot-melt adhesive raw material is:

[0043] Polyester diol 30%

[0044] Isocyanate 20%

[0045] Adhesion Promoter 0.2%

[0046] Tackifier 6%

[0047] Thermoplastic resin 20%

[0048] Coupling agent 8%

[0049] Stabilizer 3%

[0050] Filler 8%

[0051] Catalyst 4.8%

[0052] Wherein, the polyester diol is polybutylene adipate with a molecular weight of 5600 and a hydroxyl value of 10 mgKOH / g. The coupling agent is vinyltriethoxysilane, the adhesion promoter is E-20 epoxy resin (sold by Guangzhou Xinghuan Chemical Co., Ltd.), the thermoplastic resin is polybehenyl methacrylate, and the tackifier It is C9 petroleum resin (sold by Guangzhou Game Chemical Co., Ltd.), the stabilizer is antioxidant 1010 (sold by Guangzhou Game Chemical Co., Ltd.), the filler is carbon black and active calcium carbonate (mass ratio 2: 1), and the catalyst is dilauric acid two Butyl tin....

Embodiment 2

[0058] In terms of weight percentage, the content of each component of a fast-curing reactive hot-melt adhesive raw material is:

[0059] Polyester diol 35%

[0060] Isocyanate 25%

[0061] Adhesion Promoter 0.2%

[0062] Tackifier 8%

[0063] Thermoplastic resin 15%

[0064] Coupling agent 5%

[0065] Stabilizer 3%

[0066] Filler 8%

[0067] Catalyst 0.8%

[0068] Wherein, the polyester diol is polydecyl sebacate with a molecular weight of 7000 and a hydroxyl value of 15 mgKOH / g. The coupling agent is vinyltrimethoxysilane, the adhesion promoter is E-20 epoxy resin (sold by Guangzhou Xinghuan Chemical Co., Ltd.), the thermoplastic resin is poly-n-butyl methacrylate, and the tackifier is rosin resin ( Guangzhou Duofeng Chemical Co., Ltd.), the stabilizer is antioxidant 1010 (Guangzhou Game Chemical Co., Ltd.), the filler is carbon black and activated calcium carbonate (mass ratio 1:2), and the catalyst is dibutyltin dilaurate.

[0069] The preparation method of this ...

Embodiment 3

[0074] In terms of weight percentage, the content of each component of a fast-curing reactive hot-melt adhesive raw material is:

[0075] Polyester diol 40%

[0076] Isocyanate 30%

[0077] Adhesion Promoter 1%

[0078] Tackifier 5%

[0079] Thermoplastic resin 15%

[0080] Coupling agent 4%

[0081] Stabilizer 2%

[0082] Filler 2%

[0083] Catalyst 1%

[0084] Wherein, the polyester diol is polybutylene succinate with a molecular weight of 8500 and a hydroxyl value of 18 mgKOH / g. The coupling agent is vinyltriethoxysilane, the adhesion promoter is E-20 epoxy resin (sold by Guangzhou Xinghuan Chemical Co., Ltd.), the thermoplastic resin is polybehenyl methacrylate, and the tackifier It is poly-alpha-methylstyrene (sold by Shandong Guangrun Chemical Co., Ltd.), stabilizer is antioxidant 1010 (sold by Guangzhou Game Chemical Co., Ltd.), filler is carbon black and active calcium carbonate (mass ratio 2: 1), catalyst Dibutyltin dilaurate.

[0085] The preparation method...

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Abstract

The invention discloses a fast curing reaction type hot melt adhesive and a preparation method thereof. The fast curing reaction type hot melt adhesive comprises the raw materials in percentage by weight: 30 to 60 percent of polyester glycol, 10 to 40 percent of isocyanate, 0.1 to 2 percent of adhesion promoter, 5 to 10 percent of tackifier, 7 to 20 percent of thermoplastic resin, 4 to 8 percent of coupling agent, 0.5 to 3 percent of stabilizer, 2 to 9 percent of filler and 0.1 to 5 percent of catalyst. The preparation method comprises the following steps of: adding the polyester glycol into the thermoplastic resin, the adhesion promoter, the tackifier, the coupling agent, the stabilizer and the filler, mixing, heating, stirring, blending, performing vacuum drying dehydration at the temperature of between 100 and 130 DEG C, adding the isocyanate and the catalyst under nitrogen protection, thermostatically stirring at the temperature of between 70 and 80 DEG C, and reacting for 3 to 5 hours to prepare the fast curing reaction type hot melt adhesive. The product of preparation method has short crosslinking and curing time and high viscosity and is nontoxic, harmless and environmentally-friendly.

Description

technical field [0001] The invention relates to a reactive adhesive, in particular to a fast-curing viscosity-enhancing adhesive and a preparation method thereof. technical background [0002] Reactive hot melt adhesive, as a new type of adhesive in recent years, is very popular in the modern automatic assembly industry due to its low pollution, high initial viscosity and fast viscosity, and has developed rapidly. However, due to the thermoplasticity of its main resin itself, it is easy to creep when heated, and its heat resistance is limited; it is easy to become brittle when it is cold, which affects the mechanical strength and performance; its high melting temperature is not suitable for heat-sensitive adherends, making it in modern industry. application is limited. With the development of research work, scientists have introduced reactive active groups into thermoplastic resin molecules, and the hot-melt adhesive composed of them will be cross-linked and solidified thro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/06C09J11/06C09J11/08C09J11/04
Inventor 袁文辉李保庆李莉
Owner SOUTH CHINA UNIV OF TECH
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