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EVA material for sneaker sole and preparation method thereof

A technology for shoe soles and sports shoes, applied in the field of sports shoes, can solve the problems of environmental pollution, difficulty in decomposition, and difficulty in degradation, and achieve the effects of dense and uniform cells, improved printing efficiency, and improved degradable performance

Active Publication Date: 2011-07-27
ANTA CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the continuous growth of the production of chemical materials and the continuous expansion of their uses, chemical materials not only bring convenience to people, but also bring pollution to the environment by a large amount of solid waste, which has become a public hazard in the world, such as discarded plastic garbage bags, Broken soles, etc., have technical problems that are difficult to degrade and decompose
And because the comfort of sports shoes is widely promoted, when people accept the convenience and comfort of sports shoes, they also cause greater pollution to the environment.
[0003] At present, the materials used for sports shoe soles are generally soft and highly elastic plastic materials, such as the commonly used ethylene-vinyl acetate copolymer (EVA). EVA itself has stable performance and has the disadvantage of poor degradability. It is not conducive to environmental protection; therefore, in the current situation of advocating green environmental protection and low-carbon life, it is necessary to optimize and adjust the material of sports shoe soles

Method used

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  • EVA material for sneaker sole and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A kind of EVA material that sports shoe bottom is used, is the EVA foaming material of starch / ethylene-vinyl acetate copolymer / ethylene-alpha-olefin copolymer blending modification, and its production preparation method comprises the following steps:

[0041] ①. Weigh the following components in proportion:

[0042] Ethylene-vinyl acetate copolymer 9000g

[0043] Modified Starch Copolymer 1000g

[0044] Ethylene-a-olefin copolymer 200g

[0045] Talc powder 100g

[0046] Zinc oxide powder 300g

[0047] Zinc stearate 50g

[0048] Stearic acid 200g

[0049] Dicumyl Peroxide 40g

[0050] Azodicarbonamide 500g

[0051] ②. Pour ethylene-vinyl acetate copolymer, modified starch copolymer, ethylene-a-olefin copolymer, filler, zinc oxide powder, zinc stearate, stearic acid and azodicarbonamide into the dense The oil is mixed in the refining machine, the oil mixing time is 7 minutes, and the temperature is 110°C;

[0052] ③. Add dicumyl peroxide to the mixed material in ...

Embodiment 2

[0055]A kind of EVA material that sports shoe sole is used, is the EVA foaming material of starch / ethylene-vinyl acetate copolymer / ethylene-alpha-olefin copolymer blending modification, and its preparation method is: mix ethylene-vinyl acetate in proportion Copolymer 10000g, modified starch copolymer 90000g, ethylene-a-olefin copolymer 5000g, alumina powder 20000g, zinc oxide powder 1000g, zinc stearate 2000g, stearic acid 500g, azodicarbonamide 1200g, pour Mix in the internal mixer, the mixing time is 9 minutes, the temperature is 100°C, after the mixing is uniform, pour 1000g of dicumyl peroxide for mixing, the time is 5 minutes, the temperature is 115°C, and the mixing is uniform Finally, it is poured into the granulator for granulation or wheel table to produce 72960g of green and environmentally friendly EVA foamed material pellets, and then molded and foamed or injected to produce foamed products; after cooling, the semi-finished product is processed and roughened. Secon...

Embodiment 3

[0057] A kind of EVA material that sports shoe sole is used, is the EVA foaming material of starch / ethylene-vinyl acetate copolymer / ethylene-alpha-olefin copolymer blending modification, and its preparation method is: mix ethylene-vinyl acetate in proportion Copolymer 36000g, modified starch copolymer 18000g, ethylene-a-olefin copolymer 6000g, kaolin 9000g, zinc oxide powder 1200g, zinc stearate 600g, stearic acid 800g, azodicarbonamide 1320g, pour into banbury Mixing in the machine, the mixing time is 8 minutes, the temperature is 105°C, after the mixing is uniform, then pour 560g of dicumyl peroxide for mixing, the time is 4 minutes, the temperature is 118°C, after the mixing is uniform, Pour it into the granulator to make granules or roll out the tablets to make 72780g of green and environmentally friendly EVA foamed material pellets, and then foam them by molding or injection molding to produce foamed products; Secondary foam molding (Phylon molding) to obtain the finished...

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Abstract

The invention discloses an EVA material for a sneaker sole, which is made by adopting the following components according to part by weight: 10 to 90 portions of ethylene-vinylacetate copolymer, 10 to 90 portions of modified starch copolymer, 5 to 20 portions of ethylene-alpha-olefin copolymer, 0 to 20 portions of filler, 1.0 to 3.0 portions of zinc oxide, 0.5 to 2.0 portions of zinc stearate, 0.5 to 2.0 portions of stearic acid, 0.4 to 1.2 portions of dicumyl peroxide, and 1.0 to 5.0 portions of azobisformamide. The invention adopts EVA expanded material blended and modified by starch / ethylene-vinylacetate copolymer / ethylene-alpha-olefin copolymer, and starch is applied to chemical plastic, thus reducing the usage of chemical raw materials; simultaneously, the starch derivative has the characteristic of natural degradation, and is finally decomposed into carbon dioxide and water, thus causing no pollution to the environment, improving the easy degradation performance of the EVA expanded material, and advocating the industry times of 'low-carbon emission reduction, green environmental protection' of sneakers.

Description

technical field [0001] The invention relates to the technical field of sports shoes, in particular to an EVA foam material for sports shoe soles and a preparation method thereof. Background technique [0002] With the continuous growth of the production of chemical materials and the continuous expansion of their uses, chemical materials not only bring convenience to people, but also bring pollution to the environment by a large amount of solid waste, which has become a public hazard in the world, such as discarded plastic garbage bags, Broken soles etc. have technical problems that are difficult to degrade and decompose. And because the comfort of sports shoes is widely promoted, when people accept the convenience and comfort of sports shoes, the environment has also been caused greater pollution. [0003] At present, the materials used for sports shoe soles are generally soft and highly elastic plastic materials, such as the commonly used ethylene-vinyl acetate copolymer (...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L31/04C08L51/02C08L51/06C08K13/02C08K5/098C08K5/09C08K5/14C08J9/10A43B13/04
Inventor 柯育发成升良张奇隆刘成
Owner ANTA CHINA
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