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Light-weight shock-absorption rubber plastic foamed material and preparation method thereof

A kind of rubber-plastic foam material, lightweight technology, applied in the field of organic polymer compounds, can solve the problems of unpublished material density, shock absorption, tensile strength performance parameters, shoe material peeling strength decline, poor aging resistance and other problems, Achieve the effect of broadening the scope of use, improving self-adhesive and mutual-adhesive properties, and good weather resistance

Active Publication Date: 2015-01-14
MAOTAI FUJIAN SOLES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Chinese patent CN 102051003 A discloses a shock-absorbing rubber-plastic composite material, which uses hydrogenated styrene-butadiene copolymer with poor yellowing resistance as the main material, and does not disclose the details of the material's density, shock absorption, and tensile strength. Performance parameters, not suitable for shoe materials with high requirements for yellowing resistance
Patent CN 102702642 B discloses an EVA foam material with good shock absorption performance, but uses a large amount of PVC raw materials with poor thermal stability and poor aging resistance. PVC is sensitive to heat during processing and will cause different degradation when heated , release harmful substances, corrode production equipment, and even release first-class carcinogen dioxin at high temperature
Ding Guofang reported the silicone rubber / IIR foam alloy material with excellent damping properties (Proceedings of the National Symposium on Polymer Materials Science and Engineering in 2010). The addition of silicone rubber to the shoe material will directly lead to a decrease in the peel strength of the shoe material, and The material has high density and low tensile strength, so it is not suitable for sports shoes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] In this embodiment, the lightweight, shock-absorbing rubber and plastic foaming material consists of the following components by weight:

[0044] 30 parts of EVA 5110J, 50 parts of butyl rubber, 10 parts of ethylene-octene copolymer 8540, 5 parts of ethylene ethyl acrylate copolymer, 2.3 parts of AC foaming agent, 1.8 parts of crosslinking agent BIBP, 1.6 parts of nano zinc oxide, 1.3 parts of zinc stearate, 2.0 parts of stearic acid, 2.5 parts of quick-cooking agent TAIC, 10 parts of calcium carbonate;

[0045] Mix other raw materials except the cross-linking agent, fast-cooking agent and foaming agent first for banburying, the banburying temperature is controlled at 96°C, keep for 5 minutes, then add the cross-linking agent, fast-cooking agent and foaming agent, continue The banburying is heated up, and the discharge temperature is 110°C. After the banburying is completed, the milling and granulation are carried out to obtain rubber and plastic particles.

[0046] P...

Embodiment 2

[0049] In this example, the preparation method of a lightweight, shock-absorbing rubber-plastic foam material is the same as that in Example 1, except that:

[0050] Example 2: 30 parts of EVA E260F, 20 parts of butyl rubber, 10 parts of ethylene-octene copolymer 8003, 4 parts of polyethylene maleic anhydride graft copolymer, 1.5 parts of AC foaming agent, 1.0 parts of crosslinking agent DCP , 2 parts of quick-curing agent TMPTMA, and the molding temperature is controlled at 168 degrees.

[0051] The lightweight, shock-absorbing rubber-plastic foam material prepared above has a density of 0.249 g / cm 3 , Shore hardness 47, rebound rate 39%, permanent compression distortion 21%, dimensional shrinkage 0.2%, tear strength 9.5N / mm, elongation 268%, tensile strength 2.4MPa, yellowing resistance test level 5.

Embodiment 3

[0053] In this example, the preparation method of a lightweight, shock-absorbing rubber-plastic foam material is the same as that in Example 1, except that:

[0054] Example 3: 15 parts of EVA 5110J, 15 parts of EVA 7470M, 80 parts of butyl rubber, 8 parts of ethylene ethyl acrylate copolymer, 3.5 parts of AC foaming agent, 2.1 parts of crosslinking agent BIBP, 3.8 parts of quick-curing agent TAIC, The molding temperature is controlled at 174-175 degrees.

[0055] The light weight, shock-absorbing rubber and plastic foam material prepared above has a density of 0.225 g / cm 3 , Shore hardness 43 rebound rate 10%, permanent compression distortion 32%, dimensional shrinkage 2.7%, tear strength 8.3N / mm, elongation 294%, tensile strength 3.4MPa, yellowing resistance test level 4-5 .

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Abstract

The invention belongs to the technical field of organic high-molecular compounds, and particularly relates to a light-weight shock-absorption rubber plastic foamed material and a preparation method thereof. The preparation method comprises the following steps: carrying out banburying, open mixing and granulation on EVA (ethylene-vinyl acetate), butyl rubber, ethylene-octylene copolymer, a solubilizer, a foaming agent, a crosslinking agent, nano zinc oxide, zinc stearate, stearic acid, an aging accelerator and an inorganic filler to obtain rubber plastic granules, and carrying out one-step injection molding to obtain the light-weight shock-absorption rubber plastic foamed material. The light-weight shock-absorption rubber plastic foamed material has the characteristics of light weight, high shock absorptivity, favorable yellowing resistance, high dimensional stability, excellent tensile strength, excellent tear strength and the like, can be used in automobile vibration absorbers, various shock absorption pieces, shoe sole materials and the like, is especially suitable to be used as a midsole for jogging shoes, can absorb counterforce from the ground, and can well protect the feet from hurt.

Description

technical field [0001] The invention belongs to the technical field of organic polymer compounds, in particular to a light-weight, shock-absorbing rubber and plastic foaming material and a preparation method thereof. Background technique [0002] With the development of the mass fitness and sports industry, the performance requirements for sports shoes such as light weight, elasticity, and shock absorption are gradually increasing. The shock absorption system is a very important part of sports shoes. When exercising, the human body will continue to bear a lot of gravity, and when the foot lands, it will also generate a considerable impact, resulting in shock waves, which will cause different effects on different parts of the human body if they are not buffered in time. Degree of chronic fatigue injury, sports injury. The shock absorption function of the sole is the ability to absorb or reduce the shock wave, which can be realized by a good shock-absorbing structure or a mat...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L23/22C08K13/02C08K3/22C08K5/098C08K3/36C08K3/26C08K3/34C08J9/10
CPCC08J9/0061C08J9/103C08J9/104C08J2203/04C08J2323/08C08J2323/22C08J2423/08C08J2423/22C08J2451/06C08L23/0853C08L23/22C08L2205/035C08L23/0815C08L23/0869C08K13/02C08K2003/2296C08K5/098C08K5/09C08K5/34924C08K2003/265C08L51/06C08K5/14C08K5/103C08K5/31C08K3/34C08L9/00C08K3/36
Inventor 卢鑫丁思博罗显发曾建伟周小兰郭彩莲林江金校红
Owner MAOTAI FUJIAN SOLES CO LTD
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