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Preparation method of high-tear-resistance silicon compounded rubber

A compound rubber and high-resistance technology, which is applied in the field of preparing high-tear-resistant silicon compound rubber, can solve the problems of high cost and short life cycle, and achieve the effects of good processing performance, low energy consumption and low price

Inactive Publication Date: 2015-04-29
YICHANG XINGZHIXIN PLASTIC ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of this patented product lies in its short life cycle and good processing performance, but the cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Take 145 parts of 110-0 raw rubber, 5 parts of 112 raw rubber, 80 parts of fumed silica, 8.5 parts of hydroxyl silicone oil, 1.0 part of hydrogen-containing silicone oil, 0.5 parts of vinyl silicone oil and 0.3 parts of zinc stearate and other small materials in batches Put it into the kneader, knead evenly at 50°C~120°C, keep a vacuum of -0.065~-0.1MPa at 150°C~190°C for 50~70min, and then let it cool in a constant temperature room for 5~10h to complete. Afterwards, it was re-smelted until there was no burr, sampled and added 2 parts of "Double 25" and mixed evenly, vulcanized at high temperature to make tablets, cooled naturally for 5-10 hours, sliced ​​and tested, and the tear strength was 41.54KN / m.

Embodiment 2

[0025] Take 145 parts of 110-0 raw rubber, 5 parts of 112 raw rubber, 80 parts of fumed silica, 8.5 parts of hydroxyl silicone oil, 1.0 part of hydrogen-containing silicone oil, 0.5 parts of vinyl silicone oil and 0.3 parts of zinc stearate and other small materials in batches Put it into the kneader, knead evenly at 50°C~120°C, keep a vacuum of -0.065~-0.1MPa at 150°C~190°C for 50~70min, and then let it cool in a constant temperature room for 5~10h to complete. Afterwards, it was re-smelted until there was no burr, sampled and added with 1% "Double Two Four" and mixed evenly, vulcanized at high temperature to make tablets, cooled naturally for 5-10 hours, sliced ​​and tested, and the tear strength was 40.61KN / m.

Embodiment 3

[0027] Take 145 parts of 110-0 raw rubber, 5 parts of 112 raw rubber, 80 parts of fumed silica, 8.5 parts of hydroxyl silicone oil, 1.0 part of hydrogen-containing silicone oil, 0.5 parts of vinyl silicone oil and 0.3 parts of zinc stearate and other small materials in batches Put it into the kneader, knead evenly at 50°C~120°C, keep a vacuum of -0.065~-0.1MPa at 150°C~190°C for 50~70min, and then let it cool in a constant temperature room for 5~10h to complete. After re-smelting until there is no burr, add 1 part of "Double 25" and 1 part of "Double 24" to the sample, mix evenly, vulcanize at high temperature to make tablets, cool naturally for 5-10 hours, and test on slices, the tear strength is 40.88KN / m .

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Abstract

The invention relates to the field of organic silicon, particularly a preparation method of high-tear-resistance silicon compounded rubber, which comprises the following steps: mixing 110-0 methylvinyl silicone rubber and 112 methylvinyl silicone rubber, adding precipitated white carbon black, zinc stearate, hydroxy silicon oil, hydrogen-containing silicon oil and vinyl silicon oil, and mixing in a 50-120-DEG C kneader until the rubber matrix is uniformly distributed; banburying the uniform rubber matrix at 150-190 DEG C under the pressure of -0.065 to -0.1 MPa in a vacuum for 50-70 minutes to obtain a rubber matrix; and carrying out back mixing on the rubber matrix obtained in the step 2) in an open mill until no burr exists, filtering to 250-350 meshes, adding a vulcanizing agent, carrying out vulcanization reaction at 175-180 DEG C for 5-8 minutes, granulating, and cooling for 5-10 hours to obtain the high-tear-resistance silicon compounded rubber. The technical scheme greatly saves the cost, and the performance of the high-tear-resistance silicon compounded rubber can satisfy the market demands.

Description

technical field [0001] The formulation of the invention relates to the field of organosilicon, and specifically relates to a method for preparing silicon compound rubber with high tear resistance by adopting precipitation method white carbon black. Background technique [0002] Thermally vulcanized silicone rubber (silicon compound) has excellent properties such as temperature resistance, weather resistance, aging resistance, ozone resistance, fatigue resistance, etc.; at the same time, it has good electrical properties and does not change with changes in temperature and frequency; non-toxic and harmless , has good physiological inertia, and the compound rubber made by special formula has the above-mentioned various excellent properties. Therefore, it is suitable for the manufacture of various silicone rubber products, which are widely used in various industries of the national economy such as electronics, electric power industry, automobile machinery, daily household and m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L83/06C08L83/05C08K13/02C08K3/36C08K5/098C08J3/24
Inventor 陈海平党瑞东李恩刘亚伟王谦靖振强
Owner YICHANG XINGZHIXIN PLASTIC ELECTRONICS TECH CO LTD
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