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Polyurethane hot melt adhesive for plastics

A polyurethane and adhesive technology, applied in the direction of polyurea/polyurethane adhesives, adhesives, adhesive types, etc., can solve the problem of inability to recycle and repeat processing, and achieve the effect of high tensile strength

Inactive Publication Date: 2017-01-25
欧振云
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the relatively cheap price of plastics, most of the adhesives used by manufacturers are based on low-cost considerations, and most of the low-cost adhesives contain toxic and harmful ingredients, and plastic defective products and waste products are produced in the center of the production process. Due to the problem of the composition of the adhesive, it cannot be recycled and reprocessed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: a kind of polyurethane hot-melt adhesive for plastic is prepared and synthesized by the following components according to the following parts by weight:

[0017] 30 parts of polybutylene adipate;

[0018] 15 parts of polytetrahydrofuran;

[0019] 75 parts of polyol;

[0020] 15 parts of tackifying resin;

[0021] 7 copies of defoaming agent;

[0022] The above formula is compounded, and the vulcanization operation is performed for 4 hours to form the polyurethane hot-melt adhesive.

Embodiment 2

[0023] Embodiment 2: a kind of polyurethane hot-melt adhesive for plastic is prepared and synthesized by the following components according to the following parts by weight:

[0024] 30 parts of polybutylene adipate;

[0025] 20 parts of polytetrahydrofuran;

[0026] 80 parts of a mixture of ethylene glycol and glycerol;

[0027] 15 parts of tackifying resin;

[0028] 6 parts of defoaming agent;

[0029] The above formula is compounded, and the vulcanization operation is performed for 5 hours to form the polyurethane hot-melt adhesive.

Embodiment 3

[0030] Embodiment 3: a kind of polyurethane hot-melt adhesive for plastic is prepared and synthesized by the following components according to the following parts by weight:

[0031] 21 parts of polybutylene adipate;

[0032] 13 parts of polytetrahydrofuran;

[0033] 75 parts of polyol;

[0034] 10 parts of tackifying resin;

[0035] 5 parts of GPE type defoamer;

[0036] The above formula is compounded, and the vulcanization operation is performed for 6 hours to form the polyurethane hot-melt adhesive.

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PUM

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Abstract

The invention discloses polyurethane hot melt adhesive for plastics, prepared from the following components, by weight: 20-60 parts of polytetramethyleneadidpate, 10-60 parts of polytetrahydrofuran, 60-80 parts of polyhydric alcohols, 10-20 parts of tackifying resin, 5-8 parts of defoaming agent, wherein the polyurethane hot melt adhesive is made through sulfuration operation. The polyurethane hot melt adhesive for plastics takes polytetramethyleneadidpate as main ingredient, adds polyhydric alcohols to generate polarity, whose cohesive energy is big and able to form stronger intramolecular hydrogen bond, thus polyurethane hot melt adhesive from polymerization and sulfuration of polyester polyols has mechanical properties such as higher tensile strength, tearing strength and hardness. Besides, the formula has no toxicity and pollution, thus can be recycled and processed with waste material, which is environmental friendly and convenient.

Description

technical field [0001] The invention relates to the field of adhesives, in particular to a polyurethane hot-melt adhesive for plastics. Background technique [0002] In the plastics industry, especially for export plastics manufacturers, the application of environmentally friendly products means that the market competitiveness is greatly enhanced. , heat and melt the adhesive and inject it into the inner plate of the plastic to bond it. [0003] Because the price of plastic is relatively cheap, the adhesives used by manufacturers are mostly low-cost, and most of the low-cost adhesives contain toxic and harmful components, and plastic defective and waste products are produced in the center of the production process. The composition of the adhesive cannot be recycled for repeated processing. SUMMARY OF THE INVENTION [0004] In order to solve the above technical problems, the present invention provides an environmentally friendly and low-cost polyurethane hot-melt adhesive...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/06C09J175/04C09J175/08C08G18/66C08G18/42C08G18/48
CPCC09J175/06C08G18/4018C08G18/4238C08G18/4854C08G18/6607C09J175/04C09J175/08
Inventor 欧振云
Owner 欧振云