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A kind of biodegradable foam shoe midsole material and preparation method thereof

A biological and material technology, applied in the field of shoe manufacturing, can solve the problems of reduced biodegradable properties, long process, thermal degradation of materials, etc., and achieve the effect of good interaction, short process, and ultra-light density

Active Publication Date: 2021-10-15
ANTA CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after the material is cross-linked, its biodegradable properties will be reduced; at the same time, the material is foamed particles, and the midsole of the shoe needs to be thermally bonded by water vapor, which is a long process and will cause thermal degradation of the material

Method used

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  • A kind of biodegradable foam shoe midsole material and preparation method thereof
  • A kind of biodegradable foam shoe midsole material and preparation method thereof
  • A kind of biodegradable foam shoe midsole material and preparation method thereof

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preparation example Construction

[0044] The present invention also provides a method for preparing the biodegradable foam shoe midsole material described in the above technical solution, comprising the following steps:

[0045] a) After premixing the components in the biodegradable resin material, performing melt mixing, extruding and then cutting into pellets to obtain biodegradable material particles;

[0046] b) Preheat the biodegradable material particles obtained in step a), put them into a mold and close them, place them in an airtight container, and pass gas into the container to raise the temperature, so that the gas that has reached a supercritical state is harmful to the biodegradable material. The degraded material particles are impregnated and saturated, and finally the pressure is released quickly and the mold is opened to obtain the biodegradable foam shoe midsole material.

[0047] In the invention, firstly, the components in the biodegradable resin material are premixed, melted and kneaded, ex...

Embodiment 1

[0062] (1) Formulation of biodegradable resin materials:

[0063] Polyadipate / butylene terephthalate (PBAT): 100 parts by weight;

[0064] Masterbatch: 1 part by weight

[0065] Antioxidant: 0.3 parts by weight;

[0066] Nucleating agent: 5 parts by weight;

[0067] Stearic acid: 0.5 parts by weight;

[0068] Cell stabilizer: 0.5 parts by weight;

[0069]Among them, the masterbatch is made by blending white toner and PBAT; the antioxidant is AT-10; the nucleating agent is nano-titanium dioxide; the cell stabilizer is polyisobutyl methacrylate.

[0070] (2) Preparation method:

[0071] Weigh each component of the above-mentioned biodegradable resin material in parts by weight as a raw material; pre-mix the weighed raw materials, melt and knead them at 160°C for 3min through an extruder, and heat them in water at 25°C after extrusion. Cut into pellets to obtain biodegradable material particles; then preheat the obtained biodegradable material particles to 80°C, pour them i...

Embodiment 2

[0073] (1) Formulation of biodegradable resin materials:

[0074] 3-hydroxybutyrate-3-hydroxyvalerate copolymer (PHBV): 100 parts by weight;

[0075] Masterbatch: 1 part by weight

[0076] Antioxidant: 0.3 parts by weight;

[0077] Nucleating agent: 5 parts by weight;

[0078] Stearic acid: 0.5 parts by weight;

[0079] Cell stabilizer: 0.5 parts by weight;

[0080] Among them, the masterbatch is made by blending white toner and PHBV; the antioxidant is AT-10; the nucleating agent is nano-titanium dioxide; the cell stabilizer is polyisobutyl methacrylate.

[0081] (2) Preparation method:

[0082] Weigh each component in the above-mentioned biodegradable resin material in parts by weight as a raw material; pre-mix the weighed raw materials, melt and knead them at 175°C for 3 minutes through an extruder, Down pelletizing to obtain biodegradable material particles; then preheat the obtained biodegradable material particles to 100°C, pour them into a midsole mold that is als...

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Abstract

The invention provides a biodegradable foam shoe midsole material, which is prepared from a biodegradable resin material; the biodegradable resin material includes the following components: 100 parts by weight of biodegradable resin; 0.5 parts by weight of masterbatch 0.5-10 parts by weight of nucleating agent; 0.2-1 part by weight of antioxidant; 0-1.5 parts by weight of stearic acid; 0-1 part by weight of cell stabilizer. Compared with the prior art, the biodegradable foam shoe midsole material provided by the present invention adopts a specific content of specific components to achieve better interaction; the product has both ultra-light density and high rebound properties, It also has good mechanical properties and fatigue resistance, so that while greatly reducing the weight of sports shoes, it can give the wearer a better wearing and running experience, and has biodegradable properties, which can be destroyed by natural microorganisms after being used and discarded. Enzymatic degradation, the degradation products can be absorbed and metabolized by microorganisms as a carbon source, so it will not pollute the environment after being discarded.

Description

technical field [0001] The invention relates to the technical field of shoe manufacture, and more specifically relates to a biodegradable foam shoe midsole material and a preparation method thereof. Background technique [0002] With the depletion of petroleum resources and the deterioration of the earth's environment, people's attention to environmental protection technologies and materials is gradually increasing. As a daily necessity in people's life, shoes have a huge demand. In recent years, the global shoe production has exceeded 20 billion pairs, and China alone produces more than 10 billion pairs of shoes every year. Currently common shoe midsole materials mainly include ethylene vinyl acetate (EVA), thermoplastic polyurethane (TPU), cast polyurethane (PU), other thermoplastic elastomers (such as polyolefin elastomer POE, olefin block copolymer OBC, benzene Ethylene-butadiene-styrene block copolymer SBS, etc.) and rubber and other materials. However, most polymer ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L33/08C08L67/04C08L1/04C08K3/22C08K5/09C08J9/12C08J3/22B29D35/12A43B13/04
CPCA43B13/04B29D35/122C08J3/226C08J9/0023C08J9/0061C08J9/0071C08J9/122C08J2203/06C08J2367/02C08J2367/04C08J2401/04C08J2433/08C08J2467/02C08J2467/04
Inventor 熊祖江王有承刘超刘艺龙
Owner ANTA CHINA
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