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EVA composite foam material and preparation method thereof

A composite foaming and blowing agent technology, applied in the field of industrial materials, can solve problems affecting human health, etc., and achieve the effects of excellent elasticity, excellent physical properties, and low compression

Active Publication Date: 2015-03-25
ANTA CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Ammonia is an inorganic compound. It is a gas at room temperature. It is colorless and has a pungent odor. Excessive ammonia content will affect human health. Therefore, how to provide a foaming material that can avoid the generation of Ammonia becomes a technical problem that those skilled in the art need to solve

Method used

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  • EVA composite foam material and preparation method thereof
  • EVA composite foam material and preparation method thereof
  • EVA composite foam material and preparation method thereof

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preparation example Construction

[0048] Corresponding present invention also provides the preparation method of this EVA composite foam material, comprises the following steps:

[0049] Step 1: Weigh the following components by weight: 50-90 parts of ethylene-vinyl acetate copolymer, 0-30 parts of polyolefin thermoplastic elastomer, 0-30 parts of EPDM rubber, 0-20 parts of filler, 0.7-2.5 parts of odorless cross-linking agent, 1-8 parts of foaming agent and 5-10 parts of ammonia removal agent.

[0050] Step 2: Pour all the ingredients weighed in step 1 except the odorless cross-linking agent, ammonia removal agent, and foaming agent into the internal mixer for mixing. The mixing time can preferably be 8 minutes to 10 minutes , the temperature may preferably be 110°C to 115°C;

[0051] Step 3: Add the odorless crosslinking agent, ammonia removal agent, and foaming agent weighed in step 1 to the mixed material for mixing. The mixing time can be preferably 5 minutes to 8 minutes, and the temperature can be opti...

Embodiment 1～3

[0057]

[0058] Table 1: Blending formula of EVA composite foaming material (parts)

[0059] 1) each raw material is weighed by the raw material composition in Table 1 and the parts by weight of each composition;

[0060] 2) Pour all the raw materials weighed in step 1 except the cross-linking agent and foaming agent into the internal mixer for mixing. The mixing time is 8 minutes and the temperature is 110-115°C.

[0061] 3) Add an odorless cross-linking agent, an ammonia removal agent, and a foaming agent to the material kneaded in step 2, and knead for 6 minutes at a temperature of 115-120°C.

[0062] 4) Pour the obtained mixture into a granulator to granulate, and then foam by molding or one-time injection to obtain a foam material for sports shoe soles.

[0063] After the sports shoe sole obtained in step 4 is cooled with a foam material, the semi-finished product is processed and roughened, and then molded to obtain a finished shoe sole.

[0064] Among them, the sel...

Embodiment 4～6

[0066]

[0067] Table 2: EVA composite foam material blending formula (parts)

[0068] 1) each raw material is weighed by the raw material composition in Table 1 and the parts by weight of each composition;

[0069] 2) Pour all the raw materials weighed in step 1 except the cross-linking agent and foaming agent into the internal mixer for mixing. The mixing time is 8 minutes and the temperature is 110-115°C.

[0070] 3) Add an odorless cross-linking agent, an ammonia removal agent, and a foaming agent to the material kneaded in step 2, and knead for 6 minutes at a temperature of 115-120°C.

[0071] 4) Pour the obtained mixture into a granulator to granulate, and then foam by molding or one-time injection to obtain a foam material for sports shoe soles.

[0072] After the sports shoe sole obtained in step 4 is cooled with a foam material, the semi-finished product is processed and roughened, and then molded to obtain a finished shoe sole.

[0073] Among them, the selected ...

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Abstract

The invention provides an EVA composite foam material and a preparation method thereof. The EVA composite foam material comprises the following components in parts by weight: 50-90 parts of an ethylene-vinyl acetate copolymer, 0-30 parts of a polyolefin thermoplastic elastomer, 0-30 parts of ethylene propylene diene monomer, 0-20 parts of a filler, 0.7-2.5 parts of a tasteless crosslinking agent, 1-8 parts of a foaming agent and 5-10 parts of a deammoniation agent. The EVA composite foam material is free of ammonia gas flavor and peculiar smell, good in elasticity and good in physical property. The preparation method of the EVA composite foam material comprises the following steps: (1) weighing the components of the EVA composite foam material; (2) pouring all the components excluding the tasteless crosslinking agent, the deammoniation agent and the foaming agent into an internal mixer for mixing; (3) adding the crosslinking agent, the deammoniation agent and the foaming agent into the mixed materials for mixing; (4) pouring the obtained mixture into a granulator for granulation and then foaming to obtain the EVA composite foam material free of ammonia flavor.

Description

technical field [0001] The invention relates to the field of industrial materials, in particular to an EVA composite foam material and a preparation method thereof. Background technique [0002] EVA foam material is ethylene-vinyl acetate (vinyl acetate) copolymer, which is made 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 EVA, or E / VAC. Among them, the vinyl acetate content is generally 5% to 40%. Because of its low cost, and compared with polyethylene, EVA has reduced crystallinity and improved flexibility, impact resistance, filler compatibility, and heat sealing performance due to the introduction of vinyl acetate monomer in the molecular chain, so It is widely used in various fields, such as: shoe industry, building materials industry, luggage industry, toy industry and so on. [0003] The EVA foam material used in the field of shoe materials ...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L23/00C08L23/16C08K13/02C08K3/34C08K5/14C08J9/10
CPCC08J9/103C08J2203/04C08J2205/052C08J2323/08C08J2423/00C08J2423/08C08J2423/16C08L23/0853C08L23/00C08L23/16C08K13/02C08K3/34C08K5/14C08L23/0815
Inventor 刘成柯育发成升良陈爱民
Owner ANTA CHINA
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