EVA (Ethylene Vinyl Acetate) composite foaming material and preparation method thereof

A composite foaming and foaming agent technology, applied in the field of shoe materials, can solve the problems of lack of density and high resilience, and achieve the effect of good softness, high resilience and excellent elasticity

Inactive Publication Date: 2014-11-19
ANTA CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above defects in the prior art, the purpose of the present invention is to provide a kind of EVA composite foam material to solve the problem that the existing EVA composite foam material does not have low density and high resilience.

Method used

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  • EVA (Ethylene Vinyl Acetate) composite foaming material and preparation method thereof
  • EVA (Ethylene Vinyl Acetate) composite foaming material and preparation method thereof

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preparation example Construction

[0041] Corresponding present invention also provides the preparation method of this EVA composite foam material, comprises the following steps:

[0042] 1) Weigh the following components by weight: 55-90 parts of polyolefin thermoplastic elastomer, 0-35 parts of ethylene-vinyl acetate copolymer, 0-25 parts of polyethylene, 0-15 parts of EPDM rubber, filler 0-15 parts of agent, 0.5-2.5 parts of active agent, 0.5-2.5 parts of crosslinking agent, 1-6 parts of foaming agent and 1-7 parts of auxiliary agent;

[0043] 2) Pour all the ingredients weighed in step 1) except the crosslinking agent and foaming agent into the internal mixer for mixing. The mixing time can preferably be 8 minutes to 10 minutes, and the temperature can preferably be 110℃~115℃;

[0044] 3) Add the cross-linking agent and foaming agent weighed in step 1) to the mixed material for mixing. The mixing time can be preferably 5 minutes to 7 minutes, and the temperature can be preferably 115° C. to 120° C. °C; Po...

Embodiment 1～3

[0048] Table 1: EVA composite foam material blending formula (parts)

[0049]

[0050] 1) each raw material is weighed by the raw material composition in Table 1 and the parts by weight of each composition;

[0051] 2) Pour all the raw materials weighed in step 1), except the crosslinking agent and foaming agent, into the internal mixer for mixing. The mixing time is 8 minutes and the temperature is 110-115°C.

[0052] 3) Add crosslinking agent and foaming agent to the material mixed in step 2) for mixing, the mixing time is 5 minutes, the temperature is 115-120°C; then pour it into the granulator to granulate, and then mold it Foaming or one-shot foaming to obtain a foam material for sports shoe soles.

[0053] After the sports shoe sole obtained in step 3) is cooled with a foaming material, the semi-finished product is processed and roughened, and then molded to obtain a finished shoe sole.

[0054] Among them, the selected polyolefin thermoplastic elastomer is Engage84...

Embodiment 4～6

[0056] Table 2: EVA composite foam material blending formula (parts)

[0057]

[0058] 1) each raw material is weighed by the raw material composition in Table 2 and the parts by weight of each composition;

[0059] 2) Pour all the raw materials weighed in step 1), except the crosslinking agent and foaming agent, into the internal mixer for mixing. The mixing time is 8 minutes and the temperature is 110-115°C.

[0060] 3) Add crosslinking agent and foaming agent to the material mixed in step 2) for mixing, the mixing time is 5 minutes, the temperature is 115-120°C; then pour it into the granulator to granulate, and then mold it Foaming or one-shot foaming to obtain a foam material for sports shoe soles.

[0061] After the sports shoe sole obtained in step 3) is cooled with a foaming material, the semi-finished product is processed and roughened, and then molded to obtain a finished shoe sole.

[0062] Among them, the polyolefin thermoplastic elastomer selected model is En...

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Abstract

The invention provides an EVA (Ethylene Vinyl Acetate) composite foaming material and a preparation method thereof. The EVA composite foaming material comprises the following components in parts by weight: 55-90 parts of a polyolefin thermoplastic elastomer, 0-35 parts of EVA, 0-25 parts of polyethylene, 0-15 parts of ethylene-propylene-diene-monomer rubber, 0-15 parts of a filling agent, 0.5-2.5 parts of an active agent, 0.5-2.5 parts of a cross-linking agent, 1-6 parts of a foaming agent and 1-7 parts of an auxiliary agent. The EVA composite foaming material is low in density and excellent in elasticity. The preparation method for the EVA composite foaming material comprises the following steps: (1), weighing the various components included in the EVA composite foaming material; (2), pouring all the components except the cross-linking agent and the foaming agent into an internal mixer for mixing; (3), adding the cross-linking agent and the foaming agent into the mixed materials for mixing; pouring the obtained mixture into a pelletizer for pelletizing, and then foaming, so as to obtain the EVA composite foaming material.

Description

technical field [0001] The invention relates to the field of shoe materials, in particular to an EVA composite foam material and a preparation method thereof. Background technique [0002] EVA is an ethylene-vinyl acetate (vinyl acetate) copolymer, which is obtained by copolymerization of ethylene (English name: Ethylene) and vinyl acetate (English name: Vinyl Acetate). The full English name is: Ethylene Vinyl Acetate, referred to as For EVA, or E / VAC. Among them, the vinyl acetate content is generally 5% to 40%. Compared with polyethylene, EVA is widely used in foaming shoes due to the introduction of vinyl acetate monomer in the molecular chain, which reduces the crystallinity and improves flexibility, impact resistance, filler compatibility, and heat sealing performance. Materials, toys and other fields. [0003] In the EVA resin used in shoe materials, the vinyl acetate content is generally 15% to 22%. Because EVA resin blended foam products have softness, good elast...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/00C08L23/08C08L23/06C08L23/16C08K13/04C08K7/26C08K7/28C08K5/14C08J9/32C08J9/10A43B13/04
CPCC08L23/00A43B13/04C08J9/0061C08J9/08C08J9/103C08J9/32C08J2203/02C08J2203/04C08J2203/18C08J2323/00C08J2423/06C08J2423/08C08J2423/16C08L2203/14C08L2205/03C08L2205/035C08L2207/04C08L2207/066C08L2207/068
Inventor 刘成柯育发成升良陈爱民
Owner ANTA CHINA
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