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EVA foaming material and preparation method thereof

A foaming material and raw material technology, applied in the field of foaming materials, can solve the problems of non-degradable shoe materials, strong intermolecular force, air pollution, etc., achieve low overall production cost, simple preparation method, and increase tensile strength Effect

Pending Publication Date: 2022-03-22
安徽佳宾新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The main components of existing shoe materials on the market are PVC (polyvinyl chloride), PE (polyethylene), PP (polypropylene), EVA (ethylene-vinyl acetate copolymer), rubber, etc., which are all petrochemical products. It is a high polymer. Due to the high degree of polymerization and strong intermolecular force, the polymer chain is difficult to break and decompose, which leads to the non-degradability of existing shoe materials. Most of these polymer materials are derived from petroleum bases, which not only consume A large number of limited petrochemical resources, which cannot be decomposed in a short period of time in nature, become "white garbage" after being discarded or are burned to cause air pollution, which is a potential threat to the environment
At the same time, the foaming system of EVA foaming materials mainly adopts the formamide foaming system, but the formamide foaming agent will produce ammonia, formamide and other gases with pungent odor during the foaming and decomposition process, which makes the system The obtained EVA foam material will have a pungent and unpleasant odor, which will easily cause a certain degree of harm to human health.

Method used

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  • EVA foaming material and preparation method thereof
  • EVA foaming material and preparation method thereof
  • EVA foaming material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Weigh concrete raw material by table 1, all the other steps preparation steps are as follows:

[0025] (1) Pour EVA resin, POE resin, maleic anhydride grafted polyethylene, talcum powder, zinc stearate, polystyrene-ethylene-butylene-styrene block copolymer into an internal mixer for compaction Refining, the banburying temperature is controlled at 130°C, and the time is 15min;

[0026] (2) Add 1,4-bis-tert-butylperoxycumene, 4,4-oxobisbenzenesulfonyl hydrazide, and kaolin to step (1), continue banburying, and control the banburying temperature at 160°C, the time is about 10 minutes;

[0027] (3) The material mixed uniformly in the mill in the step (2) is sent to the granulator for granulation, and the granulated particles are cooled to room temperature;

[0028] (4) The particles in step (3) are injected through an injection machine, vulcanized and foamed, the vulcanization time is 400s, and the vulcanization temperature is controlled at 185°C to obtain the product.

Embodiment 2

[0030] Weigh concrete raw material by table 1, all the other steps preparation steps are as follows:

[0031] (1) Pour EVA resin, POE resin, maleic anhydride grafted polyethylene, talcum powder, zinc stearate, polystyrene-ethylene-butylene-styrene block copolymer into an internal mixer for compaction Refining, the banburying temperature is controlled at 135°C, and the time is 10min;

[0032] (2) Add 1,4-bis-tert-butylperoxycumene, 4,4-oxobisbenzenesulfonyl hydrazide, and kaolin to step (1), continue banburying, and control the banburying temperature at 175°C, the time is about 5 minutes;

[0033] (3) The material mixed uniformly in the mill in the step (2) is sent to the granulator for granulation, and the granulated particles are cooled to room temperature;

[0034] (4) The particles in step (3) are injected through an injection machine, vulcanized and foamed, the vulcanization time is 450s, and the vulcanization temperature is controlled at 180°C.

Embodiment 3

[0036] Weigh concrete raw material by table 1, all the other steps preparation steps are as follows:

[0037] (1) Pour EVA resin, POE resin, maleic anhydride grafted polyethylene, talcum powder, zinc stearate, polystyrene-ethylene-butylene-styrene block copolymer into an internal mixer for compaction Refining, the banburying temperature is controlled at 135°C, and the time is 15min;

[0038] (2) Add 1,4-bis-tert-butylperoxycumene, 4,4-oxobisbenzenesulfonyl hydrazide, and kaolin to step (1), continue banburying, and control the banburying temperature at 175°C, the time is about 10 minutes;

[0039] (3) The material mixed uniformly in the mill in the step (2) is sent to the granulator for granulation, and the granulated particles are cooled to room temperature;

[0040] (4) The particles in step (3) are injected through an injection machine, vulcanized and foamed, the vulcanization time is 450s, and the vulcanization temperature is controlled at 185°C.

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Abstract

The invention relates to the technical field of foaming materials, in particular to an EVA foaming material and a preparation method thereof. The EVA foaming material is prepared from the following raw materials in parts by weight: 40 to 50 parts of EVA resin, 10 to 20 parts of POE (Polyolefin Elastomer) resin, 5 to 10 parts of maleic anhydride grafted polyethylene, 20 to 30 parts of talcum powder, 1 to 3 parts of zinc stearate, 1 to 1.5 parts of 1, 4-bis (tert-butylperoxyisopropyl) benzene, 0.4 to 1.2 parts of 4, 4-oxydibenzenesulfonyl hydrazide, 1 to 1.5 parts of kaolin and 10 to 15 parts of polystyrene-ethylene-butylene-styrene block copolymer (SEBS). The maleic anhydride grafted polyethylene and the polystyrene-ethylene-butylene-styrene block copolymer (SEBS) are added, so that the tensile strength, the rebound rate and other mechanical properties of the foaming material are improved.

Description

technical field [0001] The invention relates to the technical field of foaming materials, in particular to an EVA foaming material and a preparation method thereof. Background technique [0002] The main components of existing shoe materials on the market are PVC (polyvinyl chloride), PE (polyethylene), PP (polypropylene), EVA (ethylene-vinyl acetate copolymer), rubber, etc., which are all petrochemical products. It is a high polymer. Due to the high degree of polymerization and strong intermolecular force, the polymer chain is difficult to break and decompose, which leads to the non-degradability of existing shoe materials. Most of these polymer materials are derived from petroleum bases, which not only consume A large number of limited petrochemical resources, which cannot be decomposed in a short period of time in nature, become "white garbage" after being discarded or are burned to cause air pollution, which is a potential threat to the environment. At the same time, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L51/06C08L53/02C08K5/14C08K3/34C08J9/10
CPCC08J9/105C08J9/0061C08J9/0066C08J9/0023C08J2323/08C08J2423/08C08J2451/06C08J2453/02
Inventor 朱家兵
Owner 安徽佳宾新材料科技有限公司
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