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Preparation method of EVA sole bonding promoter

An adhesion promoter and reaction solvent technology, which is applied in the preparation of EVA sole adhesion promoters and the preparation of surface treatment agents, can solve problems such as being unsuitable for use in winter, easy to gel, and yellowing of the material surface, and achieves remarkable results. Adhesion promotion, good comprehensive performance and good affinity

Inactive Publication Date: 2010-08-18
NANTONG GUANGTAI BIOCHEM PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The toluene solution of trichloroisocyanuric acid as an adhesion promoter can have a good adhesion promotion effect after surface treatment of EVA soles, but it is unstable and needs to be prepared temporarily, and it is easy to make the surface of the material turn yellow and affect the appearance.
The butanone solution of EVA copolymer as an adhesion promoter can also play a good adhesion promotion effect after surface treatment of EVA soles, but it is easy to gel at low temperature and is not suitable for winter use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1200 grams of reaction solvent (components are toluene 50w%, ethyl acetate 10w%, methyl ethyl ketone 20w%, acetone 20w%) is added in the reactor that has stirring and reflux device, then drops into 100 grams of neoprene rubber and 30 grams Chlorinated polyethylene was stirred and the temperature was controlled to be 50°C. After the neoprene and chlorinated polyethylene are completely dissolved, fill the reactor with nitrogen, add 20 grams of methyl methacrylate and 30 grams of vinyl acetate, and add 1.2 grams of benzoyl peroxide to polymerize after heating up to 75°C reaction. After 2 hours of polymerization reaction, add 5 grams of acrylic acid, continue the reaction for 1 hour, then turn off the nitrogen gas, cool down to 30 ° C, then add 5 grams of vinyl resin and 1 gram of 2,6-di-tert-butyl p-cresol, stir well Discharging to obtain the graft copolymer.

[0032] 500 grams of graft copolymers are mixed with 750 grams of diluting solvent (components are toluene 50w%,...

Embodiment 2

[0034] 800 grams of reaction solvent (components are toluene 30w%, ethyl acetate 30w%, methyl ethyl ketone 10w%, acetone 30w%) is added in the reactor that has stirring and reflux device, then drops into 100 grams of neoprene rubber and 50 grams Chlorinated polyethylene was stirred and the temperature was controlled to be 70°C. After the neoprene and chlorinated polyethylene are completely dissolved, fill the reactor with nitrogen, add 30 grams of methyl methacrylate and 50 grams of vinyl acetate, and add 2.4 grams of benzoyl peroxide to polymerize after heating up to 90°C reaction. After 3 hours of polymerization reaction, add 10 grams of acrylic acid, continue the reaction for 2 hours, then turn off the nitrogen, cool down to 50 ° C, then add 10 grams of vinyl resin and 2 grams of 2,6-di-tert-butyl p-cresol, stir well Discharging to obtain the graft copolymer.

[0035] 500 grams of graft copolymers are mixed with 1500 grams of diluting solvent (components are toluene 20w%,...

Embodiment 3

[0037] 1000 grams of reaction solvent (components are toluene 40w%, ethyl acetate 10w%, methyl ethyl ketone 40w%, acetone 10w%) is added in the reactor that has stirring and reflux device, then drops into 100 grams of neoprene rubber and 40 grams Chlorinated polyethylene was stirred and the temperature was controlled to be 60°C. After the chloroprene rubber and chlorinated polyethylene are completely dissolved, fill the reactor with nitrogen, add 30 grams of methyl methacrylate and 40 grams of vinyl acetate, and add 1.8 grams of benzoyl peroxide to polymerize after heating up to 85°C reaction. After 2.5 hours of polymerization reaction, add 8 grams of acrylic acid, continue the reaction for 1.5 hours, turn off the nitrogen, cool down to 40 ° C, then add 8 grams of vinyl resin and 1.5 grams of 2,6-di-tert-butyl p-cresol, stir well Discharging to obtain the graft copolymer.

[0038] 500 grams of graft copolymers are mixed with 1000 grams of dilution solvent (component is tolue...

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PUM

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Abstract

The invention relates to a preparation method of an EVA sole bonding promoter. The method comprises the following steps: firstly adding chloroprene rubber and chlorinated polyethylene into a reaction solvent (the components are toluene, ethyl acetate, butanone and acetone), stirring, filling nitrogen after full dissolution, adding methyl methacrylate and vinyl acetate, increasing the temperature to 75-90 DEG C, and then adding benzoyl peroxide for carrying out polymerization; carrying out the polymerization for 2-3 hours, adding acrylic acid, continuing the reaction for 1-2 hours, then closing the nitrogen, reducing the temperature to 30-50 DEG C, further adding terpene resin and 2,6-di-tert-butyl-p-cresol, uniformly stirring, discharging materials and obtaining a graft copolymer; and mixing the graft copolymer with a dilution solvent according to the weight ratio of 1: 1.5-3, uniformly stirring and obtaining the EVA sole bonding promoter. The EVA sole bonding promoter prepared by the method has good comprehensive performance and significant bonding promotion role for an EVA sole.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a preparation method of a surface treatment agent, in particular to a preparation method of an EVA shoe sole adhesion promoter for improving adhesion strength. Background technique [0002] With the rapid development of the footwear industry, EVA (ethylene-vinyl acetate copolymer) foaming materials are widely used as sole materials due to their light weight, beautiful appearance and low price, especially the soles of beach slippers are all made of EVA. . Since EVA is a weakly polar material, the affinity between neoprene adhesives and polyurethane adhesives with strong polarity is not strong, which brings difficulties to the bonding of EVA materials. In order to improve the bonding strength of EVA soles, In the footwear industry, adhesion promoters are generally used to surface treat EVA before bonding. The adhesion promoter can be regarded as a bridging agent between t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F291/04C08F291/00C09J5/02
Inventor 聂秋林
Owner NANTONG GUANGTAI BIOCHEM PROD
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