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EVA large hole composite foam material and preparation method

A composite foaming and coarse-pored technology, applied in applications, shoe soles, clothing, etc., can solve problems such as poor elasticity, uncomfortable wearing, and excellent texture, improve compression resistance and resilience, and improve compressive strength and tensile strength. The effect of tensile strength

Active Publication Date: 2019-09-13
ANTA CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Secondly, the EVA coarse-pore composite foam material also has problems such as too hard texture, poor elasticity and no wear resistance, and the soles made of this material are also not suitable for wearing, and need to be further improved.

Method used

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preparation example Construction

[0044] Correspondingly, the embodiment of the present invention also provides a preparation method of the EVA coarse-cell composite foam material, comprising the following steps:

[0045] Step 1: Take quantitative isotactic polybutene-1 and melt it, and add mass content of 0.05%-0.2% graphene when the melting temperature of isotactic polybutene-1 is 140-170°C, so that both Graphene-modified isotactic polybutene is obtained after mixing; the mixing time is 25-40 minutes, and the temperature is 150-180°C;

[0046] Step 2: taking each component in the material by weight fraction;

[0047] Step 3: Mix the other components weighed in step 2 except the crosslinking agent and foaming agent; the mixing time is 8-15 minutes, and the temperature is 100-110°C.

[0048] Step 4: Mix the material mixed in step 3 with the weighed crosslinking agent and foaming agent in step 2; the mixing time is 3-5 minutes, and the temperature is 110-120°C.

[0049] Step 5: The mixture obtained after knea...

Embodiment 1

[0054] In Embodiment 1 of the present invention, the proportioning by mass of the materials contained in the EVA coarse-cell composite foaming material is as follows:

[0055] Ethylene-vinyl acetate copolymer: 45 parts by mass

[0056] Graphene modified isotactic polybutene: 15 parts by mass

[0057] Polyolefin thermoplastic elastomer: 15 parts by mass

[0058] Polyester elastomer: 15 parts by mass

[0059] Active agent: 0.6 parts by mass

[0060] Crosslinking agent: 1.2 parts by mass

[0061] Foaming agent: 3.0 parts by mass

[0062] Auxiliary: 0.3 parts by mass

[0063] Among them, the model of ethylene-vinyl acetate copolymer is 7470M, produced by Formosa Plastics Corporation; polybutene is commercially available from Shandong Dongfang Hongye Chemical Co., Ltd.; graphene is commercially available; the polyolefin thermoplastic elastomer models are Engage8180 and Engage8450, and its The ratio is 2:1, produced by DuPont; the type of polyester elastomer is DSM EL430; the ...

Embodiment 2

[0070] In the second embodiment of the present invention, the mass proportions of the materials contained in the EVA coarse-cell composite foaming material are as follows:

[0071] Ethylene-vinyl acetate copolymer: 40 parts by mass

[0072] Graphene modified isotactic polybutene: 20 parts by mass

[0073] Polyolefin thermoplastic elastomer: 10 parts by mass

[0074] Polyester elastomer: 10 parts by mass

[0075] Active agent: 0.8 parts by mass

[0076] Crosslinking agent: 1.5 parts by mass

[0077] Foaming agent: 2.8 parts by mass

[0078] Auxiliary: 0.2 parts by mass

[0079] Among them, the model of ethylene-vinyl acetate copolymer is 7470M, produced by Formosa Plastics Corporation; polybutene is commercially available from Shandong Dongfang Hongye Chemical Co., Ltd.; graphene is commercially available; the polyolefin thermoplastic elastomer models are Engage8180 and Engage8450, and its The ratio is 1:1, produced by DuPont; the type of polyester elastomer is DSM EL430 ...

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Abstract

The invention discloses an EVA large hole composite foam material and a preparation method thereof. The composite foam material is prepared by mixing, granulation and foaming of materials, and the materials include: 40-60 mass parts of an ethylene-vinyl acetate copolymer, 10-20 mass parts of graphene modified isotactic polybutene, 10-15 mass parts of a polyolefin thermoplastic elastomer, 10-20 mass parts of a polyester elastomer, 0.4-0.8 mass part of an active agent, 0.7-1.5 mass parts of a cross-linking agent, 2.5-3.5 mass parts of a foaming agent and 0.1-0.3 mass part of an assistant. The mass content of vinyl acetate in the ethylene-vinyl acetate copolymer is 26%-40%. The preparation method of the EVA large hole composite foam material includes: weighing a certain amount of isotactic polybutene-1 for melting, adding 0.05%-0.2% by mass of graphene when the melting temperature of the isotactic polybutene-1 is 140-170DEG C, and mixing the two substances to obtain graphene modified isotactic polybutene. The large holes in the EVA large hole composite foam material has good foaming effect, the compression resistance and resilience are enhanced, and also the softness and wear resistance are also improved. The preparation method is simple and easy to operate.

Description

technical field [0001] The invention relates to the field of materials for sports shoe soles, in particular to an EVA coarse-pore composite foaming material and a preparation method thereof. Background technique [0002] With the rapid development of the sports shoes market, people not only have higher and higher requirements for the wearing comfort of the soles, but also pursue the novelty and eye-catching appearance of the soles. The pores in the existing EVA coarse-pore composite foaming material are transparent cells and have a large diameter, which is beneficial to light transmission and refraction, and the color that can be reflected is more plump and bright; therefore, most of the soles on the market use this EVA coarse-pore Composite foam material to enhance its ornamental. [0003] However, the existing EVA coarse-cell composite foam material has poor overall compression resistance due to the excessively large pore size of the cells formed by it; Defects such as t...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L23/20C08L67/00C08K13/02C08K5/09C08K3/04C08K5/14C08K5/3492C08J9/04A43B13/04
CPCC08J9/04C08J9/0061C08J9/0095C08J9/0023C08J9/0066C08J9/0028A43B13/04C08J2323/08C08J2423/08C08J2423/20C08J2467/00
Inventor 刘超陈绍猛张志国叶健桦苏加明
Owner ANTA CHINA
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