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Foaming material for sports shoe sole and preparation method thereof

A technology for foaming materials and shoe soles, which is applied to the field of foaming materials for sports shoe soles, can solve the problems of high vinyl acetate content, poor resilience and high hardness, and achieve the effects of good fatigue damping performance and high elastic performance.

Inactive Publication Date: 2011-04-27
ANTA CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the unreasonable ratio of the formula and the irrationality of the formula combination in the current plastic materials used in sports shoes, the shock absorption and resilience of the soles of the sports shoes will be insufficient during repeated bouncing and running. uncomfortable
For example, ethylene vinyl acetate copolymer (EVA), the commonly used shoe sole material, has physical properties determined by the content of vinyl acetate. High vinyl acetate content is not suitable for shoe material foaming; the best foaming The vinyl acetate content is 15-28%, and the elasticity and overall physical properties of this section of foamed products are not very good; while the commonly used PE foamed products have high hardness and poor resilience

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A kind of foaming material for sports shoe sole is ethylene-soft elastomer foaming material, and its preparation method comprises the following steps:

[0037] ①. Weigh the following components by weight in proportion:

[0038] Ethylene vinyl acetate copolymer 4000g

[0039] Ethylene-alpha olefin copolymer 3000g

[0040] Ethylene vinyl acetate copolymer resin 500g

[0041] Metallocene LDPE 2000g

[0042] Talc powder 500g

[0043] Zinc stearate 200g

[0044] Stearic acid 50g

[0045] Zinc oxide powder 300g

[0046] Dicumyl Peroxide 40g

[0047] Azodicarbonamide 500g

[0048] ②. Ethylene vinyl acetate copolymer, ethylene-a-olefin copolymer, ethylene vinyl acetate copolymer resin, ethylene copolymer, talc powder, zinc stearate, stearic acid, zinc oxide powder, azodimethazine Amide, pour it into the internal mixer for mixing, the mixing time is 7 minutes, and the temperature is 100-110°C;

[0049] ③. Add dicumyl peroxide to the material after mixing in step ② for ...

Embodiment 2

[0052] A foaming material for sports shoe soles is an ethylene-soft elastomer foaming material, and its preparation method is: 24000g of ethylene-vinyl acetate copolymer, 8000g of ethylene-a-olefin copolymer, and ethylene-vinyl acetate copolymerization in proportion Material resin 4000g, metallocene low-density polyethylene 4000g, kaolin: 8000g, zinc stearate ZNST2: 400g, stearic acid: 400g, zinc oxide powder: 400g, azodicarbonamide 1280g, pour into the internal mixer Mixing, the mixing time is 9 minutes, the temperature is 100-110°C, after the mixing is uniform, pour in dicumyl peroxide: 160g for mixing, the time is 5 minutes, the temperature is 115-120°C, and the mixing is uniform Finally, it is poured into the granulator to granulate to obtain 50640g of ethylene-soft elastomer foam material EVA pellets, and then molded and foamed to produce foamed products; after cooling, the semi-finished product is processed and roughened, and then Phylon is formed. And get the sole finis...

Embodiment 3

[0054] A foaming material for sports shoe soles is an ethylene-soft elastomer foaming material, and its preparation method is: 39000g of ethylene-vinyl acetate copolymer, 13000g of ethylene-a-olefin copolymer, and ethylene-vinyl acetate copolymerization in proportion Material resin 6500g, metallocene low-density polyethylene 6500g, alumina powder: 6500g, zinc stearate ZNST2: 650g, stearic acid: 325g, zinc oxide powder: 975g, azodicarbonamide 2340g, pour into the internal mixer Mixing inside, mixing time 8 minutes, temperature 100 ~ 110 ℃, after mixing evenly, pour dicumyl peroxide: 390g for mixing, time 4 minutes, temperature 115 ~ 120 ℃, mixing After smelting evenly, pour it into the granulator to granulate to obtain 76180g of ethylene-soft elastomer foam material EVA pellets, and then mold and foam to produce foamed products; after cooling, the semi-finished product is processed and roughened, and then Phylon Molded to obtain the finished shoe sole.

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PUM

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Abstract

The invention discloses a foaming material for sports shoe sole, which is prepared by following components by weight part: 40 to 80 parts of ethylene-vinyl acetate copolymer, 10 to 30 parts of ethylene-alpha olefin copolymer, 5 to 20 parts of ethylene vinyl acetate copolymer resin, 5 to 20 parts of metallocene low-density polyethylene, 5 to 30 parts of filler, 0.5 to 2.0 parts of zinc stearate, 0.5 to 2 parts of stearic acid, 0.5 to 3.0 parts of zinc oxide, 0.4 to 1.2 parts of diisopropyl benzene peroxide, and 2 to 5 parts of azodicarbonamide. The invention also discloses a preparation method for the foaming material. The foaming material of the invention has unmatched super elasticity and touching feel and has various excellent anti-impact properties such as front and back damping of the fatigued sole, rebounding property, and the like.

Description

technical field [0001] The invention relates to the technical field of sole materials for sports shoes, in particular to a foam material for sports shoe soles and a preparation method thereof. Background technique [0002] Due to its special purpose, sports shoes have relatively high requirements on the soles. For example, the midsole of the soles is required to be soft, highly elastic, and shock-absorbing. It is also required to have excellent impact resistance and rebound performance to provide proper protection for wearing. , to avoid sports injuries or damage to items, comfortable to wear. However, due to the unreasonable ratio of the formula and the irrationality of the formula combination in the current plastic materials used in sports shoes, the shock absorption and resilience of the soles of the sports shoes will be insufficient during repeated bouncing and running. uncomfortable. For example, ethylene vinyl acetate copolymer (EVA), the commonly used shoe sole mate...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L23/06C08K13/02C08K5/098C08K5/09C08K5/14C08K3/34C08J9/10A43B13/04
Inventor 柯育发成升良张奇隆何正清
Owner ANTA CHINA
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