Method for preparing foamed shoe material by blending cork powder with EVA (Ethylene Vinyl Acetate)

A technology of cork powder and blending, which is applied in the field of shoe material preparation, can solve the problems that are difficult to apply in the shoe industry, such as hard materials and lack of elasticity, and achieve the effect of unique appearance, excellent cushioning and light weight

Pending Publication Date: 2021-08-17
软慕新材料科技(苏州)有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its processing method is generally to use various adhesives to bond and mold for reuse, but the materials prepared in this way are usually hard and inelastic, and it is difficult to apply to the shoe industry. Therefore, according to the advantages and disadvantages of cork powder and EVA, we A method for preparing foamed shoe materials by blending cork powder with EVA was proposed

Method used

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  • Method for preparing foamed shoe material by blending cork powder with EVA (Ethylene Vinyl Acetate)
  • Method for preparing foamed shoe material by blending cork powder with EVA (Ethylene Vinyl Acetate)
  • Method for preparing foamed shoe material by blending cork powder with EVA (Ethylene Vinyl Acetate)

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The first step of cork powder treatment: put 20-mesh cork powder in an oven, dry at 105°C for 6 hours to obtain cork powder with a moisture content of less than 5%, and weigh it.

[0049] The second step is the plasticization of cork powder: put 80 g of dried cork powder in a high-speed mixer, add 6502 g of plasticizer silane coupling agent and stir at high speed for 8 minutes.

[0050]In the third step, add EVA180g, POE10g and EPDM40g to the internal mixer, banbury for 4min at 115°C, add compatibilizer maleic anhydride modified EVA3g and banbury for 3min, then add 50g of plasticized cork powder in the second step, banbury for 5min After observing that the refining is basically uniform, add 3g of neutralizing additive sodium bicarbonate, 4g of additive zinc oxide, 4g of zinc stearate, 10g of foaming agent azodicarbonamide (AC), continue banburying for 4min, and add inorganic 20g of filler talcum powder continued banburying for 3min, then added 1.7g of cross-linking agen...

Embodiment 2

[0056] The first step of cork powder treatment: put 80-mesh cork powder in an oven, dry at 105° C. for 6 hours, obtain cork powder with a moisture content of less than 5%, and weigh it.

[0057] The second step is the plasticization of the cork powder: put 90 g of the dried cork powder in a high-speed mixer, add 6502 g of plasticizer silane coupling agent and stir at high speed for 8 minutes.

[0058] In the third step, add 180g of EVA, 10g of POE and 40g of EPDM to the internal mixer, banbury for 4min at 115°C, add compatibilizer maleic anhydride modified EVA2g for banburying for 3min, then add 60g of plasticized cork powder in the second step, banbury for 5min After observing that the refining is basically uniform, add 3g of neutralizing additive sodium bicarbonate, 4g of additive zinc oxide, 4g of zinc stearate, 8g of foaming agent azodicarbonamide (AC), continue banburying for 4min, and add inorganic 20g of filler talcum powder continued banburying for 3min, then added 1.8...

Embodiment 3

[0065] The first step of cork powder treatment: put 200-mesh cork powder in an oven, dry at 105° C. for 6 hours to obtain cork powder with a moisture content of less than 5%, and weigh it.

[0066] The second step is the plasticization of cork powder: put 100 g of dried cork powder in a high-speed mixer, add 6502 g of plasticizer silane coupling agent and stir at high speed for 8 minutes.

[0067] In the third step, add 180g of EVA, 10g of POE and 40g of EPDM to the internal mixer, banbury for 4min at 115°C, add compatibilizer maleic anhydride modified EVA1g and banbury for 3min, then add 90g of plasticized cork powder in the second step, banbury for 5min After observing that the refining is basically uniform, add 3g of neutralizing additive sodium bicarbonate, 4g of additive zinc oxide, 4g of zinc stearate, 9g of foaming agent azodicarbonamide (AC), continue banburying for 4min, and add inorganic 30g of filler talcum powder continued banburying for 3min, then added 1.9g of cr...

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Abstract

The invention discloses a method for preparing a foamed shoe material by blending cork powder with EVA (Ethylene Vinyl Acetate), and the cork powder composite EVA foamed material comprises the following components in terms of 100 parts of EVA: 100 parts of EVA; 1 to 25 parts of cork powder; 1.0 to 2.0 parts of sodium bicarbonate; 1.0 to 8.0 parts of zinc oxide; 1.0 to 5.2 parts of zinc stearate; 1.0 to 7.0 parts of azodicarbonamide (AC) serving as a foaming agent; 10.0 to 12.0 parts of talcum powder; 10.0 to 12.0 parts of kaolin; 1-2 parts of the total amount of a compatibilizer ; 0.3 to 0.9 part of dicumyl peroxide (DCP) serving as a cross-linking agent; and 0.5-15 parts, preferably 2-10 parts of a plasticizer silane coupling agent. The foaming shoe material is prepared by compounding the cork powder with the EVA, so that the problem of elasticity of a cork powder/EVA elastomer is solved, the cork powder compounded EVA foaming material has natural cork fragrance, moisture absorption, slip resistance and degradability of cork are exerted, the physical property of the cork powder compounded EVA foaming material completely reaches the level of common EVA, part of indexes are better, and the cork powder compounded EVA foaming material can be applied to the shoemaking industry.

Description

technical field [0001] The invention relates to the technical field of shoe material preparation, in particular to a method for preparing foamed shoe material by blending cork powder with EVA. Background technique [0002] EVA is formed by the copolymerization of ethylene and acetic acid. Its application fields are quite extensive. The annual market consumption in my country is constantly increasing, especially in the shoe industry. and interior materials. Because it is derived from petroleum products, has poor hygroscopicity and does not degrade, it is easy to cause white pollution and threaten the environment. [0003] Cork powder is a by-product produced in the production process of cork products, commonly known as cork, cork, and cork, which is a kind of skin product of Mediterranean oak, and the surface protection tissue after the stem and root grow thicker. After steaming, softening and drying, it can be directly cut, punched, and turned into finished products such as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L97/00C08K13/02C08K3/22C08K5/098C08K3/34C08K5/14C08J9/10
CPCC08J9/103C08J9/0095C08J9/0066C08J9/0061C08J9/0023C08J2323/08C08J2497/00C08K13/02C08K2003/2296C08K5/098C08K3/34C08K5/14C08K3/346C08J2203/04
Inventor 刘显奎蒋鹏王占星史红月刘娜
Owner 软慕新材料科技(苏州)有限公司
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