A kind of ultra-light EVA sole and preparation method thereof

A technology of copolymers and raw materials, which is applied in the field of ultra-light EVA soles and its preparation, can solve problems such as insufficient product stability, large compression deformation, and high product hardness, and achieve improved synergistic crystallization performance, convenient molding and processing, and product stereotypes fast effect

Active Publication Date: 2018-03-30
MAOTAI FUJIAN SOLES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As we all know, natural rubber and EPDM rubber are both non-crystalline polymers, and foamed products with large magnifications must have the problem of large compression deformation, and the stability of the product is not good enough.
Patent CN 101497715 B discloses the use of low-density polyethylene and EVA to obtain a density of 0.035-0.06g / cm 3 It is an ultra-light foaming material, but low-density polyethylene is a highly crystalline polymer with only a small amount of long-chain branches. The product has high hardness and poor elasticity, which limits its use.

Method used

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  • A kind of ultra-light EVA sole and preparation method thereof
  • A kind of ultra-light EVA sole and preparation method thereof
  • A kind of ultra-light EVA sole and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] In the present embodiment, the ultralight EVA sole is made up of the following components by weight:

[0033]

[0034] The preparation method of described ultralight EVA sole, comprises the steps:

[0035] Step 1: To prepare ultra-light EVA rice, first mix all the components and raw materials for banburying, adjust the banburying temperature to 100°C, keep it for 6 minutes, then turn over the material twice, continue banburying and increase the temperature, and the output temperature is 110°C. After banburying, open milling and granulation are carried out to obtain ultra-light EVA rice.

[0036] Step 2: Pour the rice into the suction barrel of the EVA injection machine, and get the ultra-light EVA sole through one injection molding.

[0037] The ultra-light EVA sole that above-mentioned preparation obtains, density 0.09g / cm 3 , hardness 39, DIN wear resistance 192mm 3 , Dimensional shrinkage 0.2%, rebound rate 61%, compression set 48%, tear strength 6.6N / mm, tensi...

Embodiment 2

[0039] In the present embodiment, the preparation method of a kind of ultralight EVA sole is identical with the preparation method in embodiment 1, difference is in the raw material proportioning:

[0040] 50 parts of EVA 7470M, 30 parts of polyolefin block copolymer 9077, 25 parts of PP elastomer 3000, 0.1 parts of nucleating agent, 3.4 parts of AC foaming agent, and 1.8 parts of crosslinking agent BIBP.

[0041] The ultra-light EVA sole that above-mentioned preparation obtains, density 0.10g / cm 3 , hardness 42, DIN wear resistance 224mm 3 , Dimensional shrinkage 0.9%, rebound rate 62%, compression set rate 53%, tear strength 5.8N / mm, tensile strength 2.0MPa, dynamic anti-slip coefficient smooth dry 0.70 wet 0.43.

Embodiment 3

[0043] In the present embodiment, the preparation method of a kind of ultralight EVA sole is identical with the preparation method in embodiment 1, difference is in the raw material proportioning:

[0044] 50 parts of EVA 265, 25 parts of polyolefin block copolymer 9507, 23 parts of PP elastomer 3020, 0.3 parts of nucleating agent, 2.8 parts of AC foaming agent, 1.6 parts of crosslinking agent BIBP, 3 parts of anti-wear agent, nanocarbonic acid Calcium 2 parts.

[0045] The ultra-light EVA sole that above-mentioned preparation obtains, density 0.09g / cm 3 , hardness 37, DIN wear resistance 183mm 3 , Dimensional shrinkage 0.7%, rebound rate 59%, compression set rate 50%, tear strength 6.2N / mm, tensile strength 2.5MPa, dynamic anti-slip coefficient smooth dry 0.58 wet 0.39.

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Abstract

The present invention relates to the technical field of organic polymer compounds, and provides an ultralight EVA sole and a preparation method thereof; EVA material grains can be obtained from raw material EVA, a polyolefin block copolymer, a PP elastomer, a nucleating agent, a foaming agent, a crosslinking agent, zinc stearate, zinc oxide, stearic acid, an anti-wear agent and nano calcium carbonate by banburying, mixing and granulating; the ultralight EVA sole can be obtained by first injection molding; the density of the ultralight EVA sole is less than 0.1g / cm<3>, the ultralight EVA sole has ultralight weight, high elasticity, high dimensional stability, non-wrinklable surface and other characteristics, and is especially suitable for the production of high-grade lightweight and environmentally friendly EVA sport shoes, and a wearer can be more light to walk.

Description

technical field [0001] The invention belongs to the technical field of organic polymer compounds, in particular to an ultra-light EVA shoe sole and a preparation method thereof. Background technique [0002] Shoes are the necessities of life that everyone cannot live without. For the sake of comfort, people prefer to choose lighter shoes and boots in life. The weight of shoes will affect the performance of sports ability. Shoes are an add-on to the lower limbs. Heavy shoes are more likely to cause people to feel detached during wearing. The greater the quality of the shoes, the more physical energy a person consumes during exercise. Biomechanics experts have shown that running will cause severe impacts on the knees. The impact force is about 3 to 5 times the body weight. absorb. And every time the weight of shoes increases by 1 gram, people will consume 8% more physical energy for every 100 meters they run; every time the weight of shoes decreases by 1 gram, it is equival...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08L53/00C08L23/12C08K13/02C08K5/098C08K3/22C08K5/09C08K3/26C08J9/10A43B13/04
CPCA43B13/04C08J9/103C08J2203/04C08J2323/08C08K2201/011C08L23/0853C08L2203/14C08L2205/025C08L2205/03C08L2205/035C08L2205/24C08L53/00C08L23/12C08K13/02C08K5/098C08K2003/2296C08K5/09C08K2003/265
Inventor 卢鑫罗显发丁思博廖毅彬王育玲郭彩莲林臭知金校红郑荣大
Owner MAOTAI FUJIAN SOLES CO LTD
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