Process for preparing foamed filling mother material of EVA (ethylene-acetate ethylene copolymer)

A vinyl acetate copolymerization and foam filling technology is applied in the preparation of EVA foam filling masterbatch and the field of inorganic powder filling EVA foam products. Economic and social benefits, the effect of improving toughness and impact resistance

Inactive Publication Date: 2006-06-28
上海心尔新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the cost reduction problem of EVA foamed plastics, further improve the environmental stress cracking resistance and wear resistance of EVA foamed products, thereby providing a cheap EVA foamed filling masterbatch

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Take 50 kilograms of talc and 25 kilograms of calcium carbonate into a 200-liter high-speed mixer, start stirring, and add 1 kilogram of liquid paraffin, 1.5 kilograms of glyceryl monostearate and 1.5 kilograms of aluminate coupling agent under high-speed stirring. Stir at high speed for 5 minutes and then add 5 kg of random copolymer polypropylene, continue to stir for 8 minutes, finally add 8 kg of polyethylene resin and 8 kg of EVA (ethylene-vinyl acetate copolymer) resin and stir for 5 minutes, add the mixture to the same direction The twin-screw granulator extrudes and granulates to obtain EVA (ethylene-vinyl acetate copolymer) foaming and filling masterbatch.

Embodiment 2

[0027] Take 40 kilograms of talc and 40 kilograms of calcium carbonate into a 200-liter high-speed mixer, start stirring, add 1 kilogram of paraffin wax, 1 kilogram of stearic acid, 0.5 kilograms of aluminate coupling agent and 0.5 kilograms of titanic acid under high-speed stirring. Ester coupling agent, stir at high speed for 5 minutes, then add 5 kg of EPDM, continue to stir for 8 minutes, and finally add 10 kg of polyethylene resin and 2 kg of EVA (ethylene-vinyl acetate copolymer) resin and stir for 5 minutes. The mixture is added to a co-rotating twin-screw granulator to extrude and granulate to prepare an EVA (ethylene-vinyl acetate copolymer) foamed filling masterbatch.

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PUM

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Abstract

The invention relates to EVA sparking filling mother material that contains 70-83wt% filler, 5-20wt% carrier resin, and function assistant agent 5-21wt%. It could be formed by the following steps: taking first cladding by lubricating dispersing agent; taking second to the filler under the condition of whisking the modifier; taking the third cladding to the filler with carrier resin; pouring the mixture into the co-direction twin-screw granulator to take plasticizing, graining, hot cutting, cooling to gain EVA sparking filling mother material. Using 20wt% the material to make EVA resin sparking products would cost low, and have high wear resistance, smoothing appearance, and have good economic value.

Description

1. Technical Field [0001] The invention relates to a preparation method of a master batch, in particular to a preparation method of an EVA (ethylene-vinyl acetate copolymer) foamed filling master batch. Specifically, the low-cost inorganic powder is prepared by the technology of the present invention into an EVA (ethylene-vinyl acetate copolymer) foaming and filling masterbatch, and then the masterbatch is melted and blended with EVA resin in a certain proportion to foam. Fill EVA foam products into inorganic powder to achieve the purpose of reducing costs. 2. Background technology [0002] EVA is a copolymer of ethylene and vinyl acetate. EVA rubber and plastic products are new environmentally friendly plastic foaming materials, which have the advantages of good cushioning, shock resistance, heat insulation, moisture resistance, chemical corrosion resistance, etc., and are non-toxic and non-absorbent. EVA rubber and plastic products are designed to be processed and formed, and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08B29B9/12B29C48/04B29C48/05C08K9/00C08L23/12C08L25/10
CPCB29B9/06B29B9/12C08J3/226C08K3/34C08L23/04C08L23/0853B29C48/05B29C48/04B29C48/0022B29C48/345B29C48/405B29C48/40
Inventor 王梓刚
Owner 上海心尔新材料科技股份有限公司
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