EVA/POE supercritical foaming composite shoe material and preparation method thereof

A supercritical, shoe technology, applied in applications, footwear, apparel, etc., can solve problems such as affecting the application field, having a slight odor, and reducing the mechanical properties of materials

Pending Publication Date: 2020-10-20
GUANGDONG GUOLI SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The cell diameter of ordinary foam plastics is generally greater than 50 microns, and the cell density is less than 106/cm 3 , but ordinary foam plastics have larger pore size cells inside, so that when the material is subjected to external force, it often becomes the birthplace of foam cracks, which reduces the mechanical properties of the material and affects its application field
[0003] EVA chemical foaming material is a relatively conventional foaming material in the application of shoe materials at present. It has soft texture, comfortable and light weight, good anti-slip effect, mechanical strength and rebound performance ca

Method used

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  • EVA/POE supercritical foaming composite shoe material and preparation method thereof
  • EVA/POE supercritical foaming composite shoe material and preparation method thereof
  • EVA/POE supercritical foaming composite shoe material and preparation method thereof

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preparation example Construction

[0047] In one embodiment, the preparation method of described polyethylene glycol monomethyl ether grafted polyethylene maleic anhydride copolymer comprises the steps:

[0048] (1) Add polyethylene glycol monomethyl ether and polyethylene maleic anhydride copolymer into a three-necked flask with a stirring bar, use xylene as solvent, add p-toluenesulfonic acid, heat, reflux reaction, water separator removes water;

[0049] (2) cooling after the reaction is over, adding methanol to precipitate, suction filtration, washing, and drying;

[0050] The mass ratio of described polyethylene glycol monomethyl ether, polyethylene maleic anhydride copolymer is 4:1; Described p-toluenesulfonic acid accounts for polyethylene glycol monomethyl ether, polyethylene maleic anhydride copolymer gross mass 4wt%; the temperature of the reflux reaction is 160°C, and the reaction time is 8h;

[0051] The polyethylene glycol monomethyl ether is purchased from Beijing Bailingwei Chemical Co., Ltd.; ...

Embodiment 1

[0068] Embodiment 1 provides a kind of EVA / POE supercritical foaming composite shoe material, by weight, the preparation raw material of described supercritical foaming composite shoe material is: ethylene-vinyl acetate copolymer 30 parts, ethylene - 20 parts of octene copolymer, 10 parts of styrene-butadiene block copolymer, 1 part of peroxide, 1.2 parts of nucleating agent, 5 parts of modifier, 1 part of stearic acid;

[0069] The ethylene-vinyl acetate copolymer is a composite of an ethylene-vinyl acetate copolymer with a vinyl acetate content of 26wt% and an ethylene-vinyl acetate copolymer with a vinyl acetate content of 28wt%; the vinyl acetate The mass ratio of the ethylene-vinyl acetate copolymer with the ester content of 26wt% to the ethylene-vinyl acetate copolymer with the vinyl acetate content of 28wt% is 1:1.2; the ethylene-acetic acid with the vinyl acetate content of 26wt% The grade of the vinyl ester copolymer is EVA 7470K, purchased from Taiwan Formosa Plastic...

Embodiment 2

[0085] Embodiment 2 provides a kind of EVA / POE supercritical foaming composite shoe material, by weight, the preparation raw material of described supercritical foaming composite shoe material is: ethylene-vinyl acetate copolymer 40 parts, ethylene - 30 parts of octene copolymer, 20 parts of styrene-butadiene block copolymer, 3 parts of peroxide, 1.6 parts of nucleating agent, 8 parts of modifier, 3 parts of stearic acid;

[0086] The ethylene-vinyl acetate copolymer is the same as in Example 1, except that the ethylene-vinyl acetate copolymer with a vinyl acetate content of 26 wt%, and the ethylene-vinyl acetate copolymer with a vinyl acetate content of 28 wt% The mass ratio of the substance is 1:1.6;

[0087] Described ethylene-octene copolymer is with embodiment 1;

[0088] Described styrene-butadiene block copolymer is with embodiment 1;

[0089] The peroxide is bis-tert-butylperoxycumene (CAS No. 2212-81-9);

[0090] Described nucleating agent is with embodiment 1;

...

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Abstract

The invention belongs to the technical field of footwear products, and particularly relates to an EVA/POE supercritical foaming composite material for shoes and a preparation method thereof. The EVA/POE supercritical foaming composite shoe material in the invention at least comprises the following preparation raw materials in parts by weight: 30-40 parts of an ethylene-vinyl acetate copolymer, 20-30 parts of an ethylene-octene copolymer, 10-20 parts of a styrene-butadiene segmented copolymer, 1-3 parts of peroxide and 1.2-1.6 parts of a nucleating agent. Through a supercritical N2 foaming technology, a foaming temperature range is wide, foam holes are uniformly distributed, pore sizes are controllable, and the material has excellent mechanical properties and use performance such as light weight and high strength, and is high in tensile strength, large in elongation at break, good in tear resistance, low in density, extremely low in compression deformation and extremely good in wear resistance. The foaming process is environmentally friendly, a produced product has no odor of a foaming agent and a cross-linking agent, the same mechanical properties as the mechanical properties of achemical foaming material can be obtained, and the material has profound application prospects.

Description

technical field [0001] The invention belongs to the technical field of footwear products, and in particular relates to an EVA / POE supercritical foaming composite shoe material and a preparation method thereof. Background technique [0002] The cell diameter of ordinary foam plastics is generally greater than 50 microns, and the cell density is less than 106 / cm 3 , but ordinary foam plastics have large pore size cells inside, so that when the material is subjected to external force, it often becomes the birthplace of foam cracks, which reduces the mechanical properties of the material and affects its application field. [0003] EVA chemical foaming material is a relatively conventional foaming material in the application of shoe materials at present. It has soft texture, comfortable and light weight, good anti-slip effect, mechanical strength and rebound performance can meet the requirements of general shoe materials, so it is widely used by consumers. However, with the deve...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L53/02C08K13/02C08K5/14C08K5/09C08K3/22C08J9/12A43B1/00A43B1/14
CPCC08J9/122C08J9/0061C08J9/0095C08J9/0071C08J9/0023A43B1/0009A43B1/14C08J2203/04C08J2203/08C08J2323/08C08J2423/08C08J2453/02C08J2205/044
Inventor 甘舸乔志龙徐伟鹏
Owner GUANGDONG GUOLI SCI & TECH CO LTD
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