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A kind of foaming material of high resilience composition for shoe sole and preparation method thereof

A technology of foaming material and high resilience, which is applied in the fields of foaming material and its preparation, high resilience composition foaming material for shoe soles and its preparation, and can solve the problem of large permanent deformation and large loss of resilience of foamed EVA materials , poor wear resistance and other problems, to achieve the effect of improving resilience, excellent resilience, and simple process flow

Active Publication Date: 2020-09-08
MIRACLL CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Foamed EVA, as the current sole material, especially the main material of sports shoes, has the advantages of light weight, softness, and comfortable wearing. The loss of resilience is very large, and the permanent deformation is large, the mechanical properties are seriously reduced, and there are problems such as poor wear resistance, which seriously affect its application in the field of shoe materials.

Method used

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  • A kind of foaming material of high resilience composition for shoe sole and preparation method thereof
  • A kind of foaming material of high resilience composition for shoe sole and preparation method thereof
  • A kind of foaming material of high resilience composition for shoe sole and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A kind of technique for preparing TPU alloy material, comprises the steps:

[0037] 1) 68 parts of polyester polyols, 6 parts of BDO, and 26 parts of diphenylmethane diisocyanate MDI with a molecular weight of 2000g / mol are added to the feed port of the twin-screw extruder, and 95 parts of EVA, MAH (maleic anhydride ) 10 parts and 5 parts of initiator DCP (dicumyl peroxide) are injected in the twin-screw extruder by side feeding;

[0038] 2) Control the temperature in the reaction zone of the twin-screw extruder to 140-200°C, and the temperature in the cooling zone to 90-110°C, and the extruded material is cut and granulated underwater;

[0039] 3) drying the granulated product obtained in step 2).

Embodiment 2

[0041] A kind of technique for preparing TPU alloy material, comprises the steps:

[0042] 1) 55 parts of polyester polyols, 7 parts of BDO, and 38 parts of diphenylmethane diisocyanate MDI with a molecular weight of 1500g / mol are added to the feed port of the twin-screw extruder, and 75 parts of EVA, MAH (maleic anhydride ) 5 parts and 0.2 part of initiator DCP (dicumyl peroxide) are injected in the twin-screw extruder by side feeding;

[0043] 2) Control the temperature in the reaction zone of the twin-screw extruder to 50-250°C, and the temperature in the cooling zone to 90-110°C, and the extruded material is cut and granulated underwater;

[0044] 3) drying the granulated product obtained in step 2).

Embodiment 3

[0046] A kind of technique for preparing TPU alloy material, comprises the steps:

[0047] 1) the molecular weight of 70 parts by weight is the polyether polyol of 1800g / mol and 5 parts of BDO, toluene diisocyanate TDI 25 parts join the feed port of twin-screw extruder, 65 parts of EVA (Mitsui Chemicals' 150Y), 0.1 part of acrylic acid and 0.1 part of initiator DCP (dicumyl peroxide) are injected into the twin-screw extruder by side feeding;

[0048] 2) Control the temperature in the reaction zone of the twin-screw extruder to 140-180°C, and the temperature in the cooling zone to 90-110°C, and the extruded material is cut and granulated underwater;

[0049] 3) drying the granulated product obtained in step 2).

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Abstract

The invention relates to a high-resilience composition foaming material for shoe soles and a preparation method thereof, comprising the following components in parts by weight: 100 parts of ethylene-vinyl acetate copolymer EVA; thermoplastic polyurethane / ethylene-vinyl acetate copolymer alloy 1-70 parts; 0.1-10 parts of foaming agent; 0.01-10 parts of crosslinking agent; 0-20 parts of filler; the foaming material of high resilience composition for soles of the present invention utilizes TPU / EVA alloy to play The role of the compatibilizer forms the EVA / TPU interpenetrating network structure (IPN), and introduces the TPU component into the conventional EVA foaming system to solve the problem of the performance decline of the final composition foaming material due to poor compatibility between the two .

Description

technical field [0001] The invention relates to a foaming material and a preparation method thereof, in particular to a high-resilience composition foaming material for shoe soles and a preparation method thereof, belonging to the technical field of lightweight materials. Background technique [0002] Ethylene-vinyl acetate copolymer is prepared by copolymerization of ethylene (E) and vinyl acetate (VA). The English name is EthyleneVinylAcetate, referred to as EVA. Foamed EVA, as the current sole material, especially the main material of sports shoes, has the advantages of light weight, softness, and comfortable wearing. The loss of resilience is very large, the permanent deformation is large, the mechanical properties are seriously reduced, and there are problems such as poor wear resistance, which seriously affect its application in the field of shoe materials. Therefore, developing a kind of EVA foam material for shoe soles with excellent resilience and higher expansion ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08L75/06C08L75/08C08K5/14C08K3/22C08K3/26C08J9/10C08J9/08A43B13/04A43B13/18
CPCA43B13/04A43B13/187C08J9/0023C08J9/0061C08J9/0066C08J9/0095C08J9/08C08J9/102C08J9/103C08J9/105C08J2203/02C08J2203/04C08J2323/08C08J2423/08C08J2475/06C08J2475/08
Inventor 宋红玮王光阜战振生张生王仁鸿
Owner MIRACLL CHEM
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