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EVA (ethylene-vinyl acetate) copolymer and preparation method thereof

A technology of copolymers and mixtures, which is applied in the field of EVA copolymers and its preparation, can solve the problems of not being able to be used as raw materials for shoe soles and wires, and achieve the effect of long-lasting color, fine and smooth surface, and not easy to fade

Inactive Publication Date: 2016-09-28
GUANGZHOU JUZHU GENERAL TECH INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, direct crosslinking with organic peroxides has several disadvantages when applied to films or wires
[0003] Among them, in the invention patent in China, the authorized announcement number is CN 102382353 B, which provides the application of EVA materials in the production of road cones, but it cannot be used as raw materials for shoe soles and wires
And in the Chinese invention patent, the application number is 201410336944.6, which provides an improved EVA, which has the advantages of high temperature resistance, corrosion resistance and non-toxicity, but it cannot be used as raw material for shoe soles and wires

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1 is a kind of EVA copolymer, comprises the following components by weight percentage: EVA particle 50, phenolic resin 10, methyl acrylate 10, ammoniacal liquor 1, cellulose 5, calcium carbonate 5, magnesium carbonate 5, emulsifier 3, Accelerator 0.5, preservative 1, deionized water 20, through coupling agent and accelerator in the embodiment, can make the EVA copolymer of preparation have high melt tension and very low probability of gel or fish eye formation EVA copolymer, and by adding cellulose, the surface of EVA copolymer can be made more delicate, further by adding phenolic resin and methyl acrylate, the prepared EVA copolymer can have better stability and strength, and then EVA Copolymer EVA copolymer with high melt tension and very low probability of gel or fish eye formation. The crosslinked EVA copolymer obtained in this way can be used as the raw material of shoe soles and wires, as well as the silane coupling agent and accelerator in the present ...

Embodiment 2

[0026] Embodiment 2 is a kind of EVA copolymer, EVA particle 70, phenolic resin 30, methyl acrylate 50, ammoniacal liquor 10, cellulose 20, calcium carbonate 20, magnesium carbonate 20, color paste 3.8, emulsifier 9, coupling agent 0.5 , Accelerator 5, preservative 5, deionized water 40, through the coupling agent and accelerator in the embodiment, the EVA copolymer prepared can have high melt tension and very low probability of gel or fisheye formation EVA Copolymer, and by adding cellulose, the surface of EVA copolymer can be made more delicate, and further by adding phenolic resin and methyl acrylate, the prepared EVA copolymer can have better stability and strength, and then EVA copolymerization EVA copolymers with high melt tension and very low probability of gel or fisheye formation. The crosslinked EVA copolymer obtained in this way can be used as the raw material of shoe soles and wires, as well as the silane coupling agent and accelerator in the present invention, whi...

Embodiment 3

[0028] Embodiment 3 is a kind of EVA copolymer, comprises the following components by weight percentage: EVA particle 60, phenolic resin 20, methyl acrylate 10, ammoniacal liquor 1, cellulose 5, calcium carbonate 5, magnesium carbonate 5, color paste 1, emulsifier 3, coupling agent 0.1, accelerator 0.5, preservative 1, deionized water 20, through coupling agent and accelerator in the embodiment, the EVA copolymer prepared can have high melt tension and extremely low The EVA copolymer formed by probabilistic gel or fisheye, and by adding cellulose, can make the surface of EVA copolymer more delicate, and further by adding phenolic resin and methyl acrylate, the prepared EVA copolymer can have more Good stability and strength, and then the EVA copolymer has high melt tension and very low probability of gel or fisheye formation. The crosslinked EVA copolymer obtained in this way can be used as the raw material of shoe soles and wires, as well as the silane coupling agent and acce...

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Abstract

The invention discloses an EVA (ethylene-vinyl acetate) copolymer and a preparation method thereof. The EVA copolymer comprises the following components in percentage by weight: 50-70% of EVA particle, 10-30% of phenolic resin, 10-50% of methyl acrylate, 1-10% of ammonia water, 5-20% of cellulose, 5-20% of calcium carbonate, 5-20% of magnesium carbonate, 0-3.8% of color paste, 3-9% of emulsifier, 0-0.5% of coupling agent, 0.5-5% of accelerator, 1-5% of preservative and 20-40% of deionized water. The EVA copolymer has the advantages of high melting tension and extremely low probability for gel or fisheye formation. Thus, the obtained crosslinked EVA copolymer can be used as a raw material for shoe soles and wires.

Description

technical field [0001] The invention belongs to the field of fine chemicals, in particular to an EVA copolymer and a preparation method thereof. Background technique [0002] In order to form a stable and good foam, the EVA copolymer resin used in the foam should have optimum melt tension and melt index (MI). Among EVA resins, resins with higher vinyl acetate (VA) content generally enable highly stretchable foam products. However, the higher the VA content, the more difficult it is to obtain products with high melt tension or low MI. In order to reduce the MI of EVA copolymer resins containing high VA content while increasing the melt tension, various treatments can be tried. In the case where the EVA copolymer resin is used for foams, it is more preferable to use an organic peroxide to reduce the MI of the EVA copolymer resin by crosslinking, rather than crosslinking by radiation or using a compound with Cross-linking by copolymerization of monomers with double bonds red...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L61/06C08L1/02C08K13/02C08K3/26C08K5/39
CPCC08L23/0853C08L2205/03
Inventor 不公告发明人
Owner GUANGZHOU JUZHU GENERAL TECH INST CO LTD
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