EVA foaming material with high-temperature resistance and aging resistance as well as preparation method and application of EVA foaming material

A foaming material and anti-aging technology, applied in application, shoe sole, clothing and other directions, can solve the problems of difficult processing, high processing temperature, large amount of addition, etc., and achieve the effect of maintaining the original performance and good high temperature resistance and aging resistance.

Active Publication Date: 2019-06-21
ANTA CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this kind of improvement can improve the problem of product shrinkage, the melting point of OBC is 120°C, the processing temperature is high, and it is not easy to process. Moreover, OBC is a non-polar polymer with a large amount of addition, which is not conducive to the subsequent bonding process of midsole materials, etc.

Method used

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  • EVA foaming material with high-temperature resistance and aging resistance as well as preparation method and application of EVA foaming material
  • EVA foaming material with high-temperature resistance and aging resistance as well as preparation method and application of EVA foaming material
  • EVA foaming material with high-temperature resistance and aging resistance as well as preparation method and application of EVA foaming material

Examples

Experimental program
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Effect test

preparation example Construction

[0056] The embodiment of the present invention provides the preparation method of the high-temperature-resistant and aging-resistant EVA foam material as described above, comprising the following steps:

[0057] The EVA composite material is sequentially mixed and granulated, and then foamed to obtain a high-temperature-resistant and anti-aging EVA foam material.

[0058] The process flow of the embodiment of the present invention mainly includes: weighing→mixing→granulation→foaming→baking. The embodiments of the present invention are weighed in groups first: according to the dosage of the formula, DCP and foaming agent can be weighed as the first group; stearic acid, zinc stearate, and zinc oxide can be weighed as the second group; the remaining The material is called the third group.

[0059] In the embodiment of the present invention, the weighed components are mixed: first, pour the third group of materials into the internal mixer, and start the machine, wait for the temp...

Embodiment 1

[0066] Weighing: According to the dosage of the formula in Table 1, weigh DCP and foaming agent as the first group; weigh stearic acid, zinc stearate, and zinc oxide as the second group; and weigh the remaining materials as the third group Say hello.

[0067] Mixing: first pour the third group of materials into the internal mixer, and start the machine, when the temperature rises to 80-85°C, then pour the second group of materials; when the temperature rises to 90-95°C, pour The third group of materials; when the temperature rises to 100-110°C, pour out the mixed materials.

[0068] Material making: Pour the mixed material into the material making machine, and adjust the temperature of the first, second, third, and fourth zones to 75, 80, 85, and 90°C respectively. And, the screw speed is adjusted to 40-50 rpm, and the cutting speed is adjusted to 15-20 rpm. The water ring / underwater granulation is used in the material making process, dehydrated by a dehydrator (centrifuge),...

Embodiment 2-6

[0072] According to the steps of Example 1, the formulations are shown in Table 1, and high temperature and anti-aging EVA foam materials were prepared respectively.

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Abstract

The invention provides an EVA foaming material with high-temperature resistance and aging resistance as well as a preparation method and an application of the EVA foaming material. The foaming material is prepared from an EVA composite by foaming, wherein the EVA composite comprises 40-50 parts of EVA, 10-55 parts of AEM rubber, 10-20 parts of polyolefin elastomers, 10-20 parts of OBC, 0.5-0.8 parts of a peroxide crosslinking agent, 3-5 parts of a foaming agent, 1-4 parts of an active agent and 3-12 parts of a reinforcing agent. The thermal shrinkage rate of the foaming material in the embodiment is 0.6%-1%, which is lower than that of the traditional EVA foaming material. After the foaming material is aged under hot air, the permanent compression deformation change rate, the mechanical property change rate and the hardness change rate are all lower than 20%, original properties of the material are well maintained, and the foaming material has good high-temperature resistance and agingresistance. The processing temperature of the material is low, and thus, subsequent bonding is facilitated.

Description

technical field [0001] The invention relates to the technical field of footwear product materials, in particular to a high-temperature-resistant and anti-aging EVA foam material and a preparation method and application thereof. Background technique [0002] Sports shoe soles usually consist of outsoles and midsoles. The outsole refers to the layer structure that is in direct contact with the ground. It is usually made of natural rubber or artificial rubber and has the functions of anti-slip, wear-resistant and bending-resistant. The midsole generally refers to the structure between the insole and the outsole, which mainly plays the role of support or rebound. At present, the midsole is mainly made of thermoplastic elastomer materials such as ethylene vinyl acetate copolymer (EVA), styrene-based thermoplastic elastomer (SBS), ethylene octene block copolymer (OBC), and thermoplastic polyurethane (TPU). foam structure. [0003] Among them, conventional EVA foaming materials a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L53/00C08K13/02C08K5/14C08K5/098C08K5/09C08K3/22C08K3/36C08J9/10A43B13/04
Inventor 朱小平刘成李忠德张贻兵成升良柯育发吴志诚
Owner ANTA CHINA
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