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Leather scrap modified foamed shoe insole and preparation method thereof

A leather and modification technology, applied in the field of foam materials, can solve the problems of low utilization rate of leather waste, and achieve the effects of high-value utilization, improved compatibility and resource recycling.

Active Publication Date: 2020-12-08
MAOTAI FUJIAN SOLES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present application solves the technical problem of the low utilization rate of leather waste in the prior art by providing the midsole of leather shavings modified foamed shoes and its preparation method, and realizes the beneficial effect of expanding the use of leather waste. Under the premise of performance, the prepared sole is still biodegradable

Method used

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  • Leather scrap modified foamed shoe insole and preparation method thereof
  • Leather scrap modified foamed shoe insole and preparation method thereof
  • Leather scrap modified foamed shoe insole and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0038] The preparation method of the midsole of foamed shoes modified by leather shavings comprises the following steps:

[0039] 1) Preparation of leather shavings grafted polybutadiene:

[0040] a) Put the tanned leather scraps and recycled waste leather products into a vacuum drying oven, and dry them in a vacuum at a drying temperature not higher than 90°C to obtain dried leather waste;

[0041] b) Crushing and grinding the leather waste to obtain 50-600 mesh leather scraps;

[0042] c) 400g maleic anhydride grafted polybutadiene (grafting rate 17% (mass fraction)) is put into the torque rheometer, after it is melted, add leather shavings 500g, melt and graft 2 hours, obtain leather Crumb grafted polybutadiene.

[0043] 2) Preparation of regenerated EVA:

[0044] Put the scraps, defective products, waste products, leftovers, and waste photovoltaic cell packaging EVA film produced in the process of producing EVA soles into a crusher to crush them, and then prepare them t...

Embodiment 2

[0054] The preparation method of the midsole of foamed shoes modified by leather shavings comprises the following steps:

[0055] 1) Preparation of leather shavings grafted polybutadiene:

[0056] a) Put the tanned leather scraps and recycled waste leather products into a vacuum drying oven and dry them in a vacuum at a drying temperature not higher than 90°C to obtain dried leather waste;

[0057] b) Crushing and grinding the leather waste to obtain 50-600 mesh leather scraps;

[0058] c) 400g maleic anhydride grafted polybutadiene (grafting rate 17% (mass fraction)) is put into the torque rheometer, after it is melted, add leather shavings 500g, melt and graft 2 hours, obtain leather Crumb grafted polybutadiene;

[0059] 2) Preparation of regenerated EVA:

[0060] Put the scraps, defective products, waste products, leftovers, and waste photovoltaic cell packaging EVA film produced in the process of producing EVA soles into a crusher to crush them, and then prepare them th...

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PUM

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Abstract

The leather scrap modified foamed shoe insole comprises, by weight, 30 parts of EVA, 15-20 parts of regenerated EVA, 15-50 parts of leather scrap grafted polybutadiene, 1.3-1.5 parts of a foaming agent AC, 1.0-1.2 parts of a cross-linking agent BIBP, 1.0-1.1 parts of zinc stearate, 0.8-1.0 part of zinc oxide, 1.0-1.3 parts of stearic acid and 5-8 parts of talcum powder. According to the invention,carboxyl groups in maleic anhydride grafted polybutadiene and amido groups of leather scraps are subjected to amidation crosslinking by utilizing a melt grafting modification technology, so that thecompatibility of leather wastes and EVA shoe materials is improved; a macromolecular protein is introduced into EVA, so that the problem of environmental pollution caused by difficult biodegradation of EVA can be solved; and through amidation crosslinking, the environment-friendly performance of the EVA shoe materials is improved, the crosslinking degree between molecular chains can be increased,the leather scrap modified foaming material with excellent performance is obtained, high-value utilization of leather waste is achieved, resource recycling is achieved, environmental pollution is reduced, and the production cost of shoe materials is reduced.

Description

technical field [0001] The invention relates to the technical field of foaming materials, in particular to leather shavings modified foamed shoe midsoles and a preparation method thereof. Background technique [0002] With the rapid development of the footwear industry, the varieties of sole materials are increasingly diversified. The polyvinyl chloride and rubber solid soles that dominate the traditional footwear industry have been gradually replaced by the emerging rubber and plastic foam soles. Ethylene-vinyl acetate copolymer (EVA) foam sole material is widely liked by people because of its light weight and comfortable wearing. [0003] EVA has good plasticity and excellent elasticity. Therefore, the application of EVA in the midsole of sports shoes is extremely common. With the continuous reduction of resources and the seriousness of pollution, the recycling of leather waste has been paid more and more attention. Studying the effect of leather waste on the performan...

Claims

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Application Information

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IPC IPC(8): C08L87/00C08L23/08C08K13/02C08K5/098C08K3/22C08K5/09C08K3/34C08J9/10C08G81/02A43B13/04A43B13/02A43B13/12A43B13/18
CPCC08J9/103C08J9/0061C08J9/0066C08J9/0023C08J9/0095C08G81/02A43B13/04A43B13/026A43B13/125A43B13/187C08J2387/00C08J2423/08C08J2203/04
Inventor 丁佳怡卢鑫丁馨兰罗显发廖毅彬王育玲丁思博刘显奎陈振裕吴欢欢
Owner MAOTAI FUJIAN SOLES CO LTD
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