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Preparation method of polyurethane rubber / silicone gross rubber

A technology of polyurethane compound rubber and polyurethane rubber, which is applied in the field of preparation of polyurethane rubber/silicone rubber compound rubber, can solve the problems of adding compatibilizers, etc., and achieve the effect of good mechanical properties

Inactive Publication Date: 2015-05-27
青岛欧美亚橡胶工业有限公司
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

The blending method is to improve their compatibility through co-vulcanization, but it needs to add compatibilizer

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0016] 1. Fully mix 100 g of white carbon black and 20 g of hexamethyldisilazane in a mixer, then bake in an oven at 80°C until neutral, and place for 24 hours;

[0017] 2. Add the above mixture, 200 g of methyl vinyl silicone rubber and 10 g of diphenylsilanediol into a vacuum kneader, and knead into a mixed rubber;

[0018] 3. Mix the silicone rubber compound and the polyurethane compound on the double rollers for 2 minutes respectively, then mix the silicone rubber compound and the polyurethane compound evenly in a ratio of 3:2, add the vulcanizing agent, and thin it out Film out.

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PUM

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Abstract

The invention discloses a preparation method of polyurethane rubber / silicone gross rubber. The method includes the following steps: 1, fully mixing 100 parts of white carbon black and 20 parts of hexamethyl-disilazane in a mixing mill, baking the mixture an oven at 80 DEG C to a neutral state, and placing for 24 h; 2, adding the mixture with 200 parts of methyl vinyl silicone rubber and 10 parts of diphenyl silanediol in a vacuum kneading machine, and kneading the mixture into gross rubber; and 3, respectively milling the silicone rubber gross rubber and polyurethane rubber in a double roller for 2 min, and then evenly mixing silicon rubber gross rubber and polyurethane rubber in a weight ratio of 3:2, adding a vulcanizing agent, conducting thin-filming and discharging. According to the preparation method of the polyurethane rubber / silicone gross rubber provided by the invention compound, white carbon black is added to methyl vinyl silicone rubber for mixing, and then subjected to co-mixing with polyurethane; without the addition of the compatibilizer, the curing agent can realize the vulcanization; and the prepared gross rubber has good mechanical properties.

Description

[0001] technical field [0002] The invention relates to a method for preparing a rubber compound, in particular to a method for preparing a polyurethane rubber / silicone rubber compound. [0003] Background technique [0004] Silicone rubber has excellent heat resistance, cold resistance, dielectric properties, ozone resistance and atmospheric aging resistance, etc. Its outstanding performance is a wide range of operating temperatures, but its mechanical properties such as tensile strength and tear strength are poor. Polyurethane has good mechanical properties, and the combination of the two can give full play to their respective advantages and improve the performance of the material. The blending method is to improve their compatibility through co-vulcanization, but it needs to add compatibilizer. [0005] Contents of the invention [0006] The object of the present invention is to provide a preparation method of polyurethane rubber / silicone rubber compound, which can ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L75/04C08K13/02C08K3/36C08K5/5445C08K5/5419
Inventor 张国盛
Owner 青岛欧美亚橡胶工业有限公司
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