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Foam material for shoes and preparation method thereof

A foaming agent technology for shoes, which is applied in the field of foaming materials for shoes and its preparation, can solve the problems of poor dimensional stability, poor low-temperature toughness, high impact rebound rate, etc., and achieve a controllable thermal shrinkage rate, The effect of low cost and light weight

Active Publication Date: 2018-09-04
CHINA LEATHER & FOOTWEAR IND RES INST JINJIANG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It overcomes the low processing viscosity, poor low-temperature toughness and poor dimensional stability of the material; in the shock-absorbing performance test, the deceleration is large and the impact rebound rate is high, and the predetermined buffer distance can only be obtained. Technical issues with shock-absorbing effects

Method used

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  • Foam material for shoes and preparation method thereof
  • Foam material for shoes and preparation method thereof
  • Foam material for shoes and preparation method thereof

Examples

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Effect test

preparation example Construction

[0064] The present invention also provides a method for preparing the foaming composition for shoes according to the present invention, which includes the step of mixing the components of the foaming composition for shoes.

[0065] Specifically, the preparation method of the present invention comprises the following steps:

[0066] (1) Mix the base materials evenly with a high-speed mixer, and melt blend them in an internal mixer at 100-140°C for 3-5 minutes; add activators, foaming agents, cross-linking aids and fillers, and banbury for 3- 5min, finally add the cross-linking agent and mix for 2-3min before discharging;

[0067] (2) extruding the raw materials after mixing, and then processing and slicing them into primary embryo raw materials with a predetermined volume;

[0068] (3) Put the raw material of the embryo into the mold, carry out molding and foaming under the conditions of 10-15MPa and 160-175°C temperature, release and press after 5-15min to obtain a foam body,...

Embodiment 1-3

[0075] According to the mass parts of each component in the following Table 1, the foaming compositions for shoes of Examples 1-3 were prepared according to the following method.

[0076] The preparation method of embodiment 1-3 is:

[0077] (1) The base material (ethylene-vinyl acetate rubber (EVM), ethylene-vinyl acetate resin (EVA), styrene-ethylene-butylene-styrene block copolymer (SEBS) and brominated butyl rubber (BIIR)) and compatibilizer anhydride grafted ethylene-octene random copolymer (POE-g-MAH) were pre-mixed uniformly with a high-speed mixer, and then melt-blended in an internal mixer at 120±3°C 3min.

[0078] (2) Add foaming agent azodicarbonamide (AC), activator zinc stearate, activator zinc oxide, auxiliary crosslinking agent triallyl isocyanurate (TAIC) and filler silica , banburying for 5 minutes, and finally adding the cross-linking agent 1,4-bis-tert-butylperoxycumene (BIPB) and mixing for 2 minutes before discharging.

[0079] (3) Extruding the kneaded...

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Abstract

The invention relates to a foam material for shoes and a preparation method thereof. The foam material for shoes comprises the following components in percentage by weight: base stock, a foaming agent, a crosslinking agent, an assistant crosslinker, an activating agent and a filler, wherein based on the total mass of 100%, the base stock comprises 30-49.9% of ethylene-vinylacetate rubber, preferably 35-45%, 10-30% of ethylene-vinyl acetate resin, preferably 15-25%, 20-40% of a styrene-ethylene-butene-styrene block copolymer, preferably 25-35%, and 5-30% of brominated butyl rubber, preferably 5-20%. The foam material for shoes, disclosed by the invention, is uniform in foam structure, has excellent shock absorption, deformation resistance, lightweight and low cost, and can achieve the aim of controlling the density, elasticity, hardness and hot-shrinkage rate according to different proportions of the various components.

Description

technical field [0001] The invention relates to a foam material for shoes and a preparation method thereof, belonging to the field of new materials. Background technique [0002] In order to reduce physical energy consumption and improve wearing comfort, lightweight high-elastic shock-absorbing foam materials have become the main direction of research and development of sports shoe soles. At the same time, China, as the world's largest producer of sports shoes, most of its products are low-end and low-end products, and the homogeneity and low-price competition are quite serious. It is of great practical significance to improve the quality of footwear through the performance of shoe materials and reverse the current price war of sports shoes. [0003] The existing method of manufacturing shock-absorbing materials is mainly based on neoprene, acrylonitrile-butadiene rubber (NBR), styrene-isoprene-styrene block copolymer (SIS), thermoplastic elastomer (TPE), Polyurethane (PU)...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L31/04C08L23/08C08L53/02C08L23/28C08K13/02C08K3/22C08K5/098C08K3/36C08J9/10A43B13/04
CPCA43B13/04C08J9/0023C08J9/0061C08J9/0066C08J9/0095C08J9/103C08J2203/04C08J2331/04C08J2423/08C08J2423/28C08J2453/02
Inventor 王旭段力民尹岳涛王文琪李鹏宇段徐宾
Owner CHINA LEATHER & FOOTWEAR IND RES INST JINJIANG CO LTD
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