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Modified heat-resistant silicone rubber and preparation method thereof

A silicone rubber and heat-resistant technology, applied in the field of modified heat-resistant silicone rubber and its preparation, can solve the problems of poor low temperature resistance and high price, and achieve the effects of good heat resistance and excellent heat resistance stability.

Inactive Publication Date: 2018-04-06
SHENYANG SAIYA RUBBER PRODS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the heat-resistant temperature of silicon nitrogen rubber can reach more than 300 degrees, but there are disadvantages such as poor low temperature resistance and high price, which limit its application in various fields

Method used

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  • Modified heat-resistant silicone rubber and preparation method thereof
  • Modified heat-resistant silicone rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] According to the components specified in the following Table 1, weigh the raw materials, dissolve the chloroplatinic acid in anhydrous isopropanol and stir fully to completely dissolve the chloroplatinic acid and leave it to stand to obtain the chloroplatinic acid-isopropanol solution; Disperse vinyl silicone oil, quartz powder, carbon black, phenyl silicone oil, cerium oxide and inhibitors in a high-speed shearing machine for 90-110 minutes, then cool down to 40-50°C, and then add chloroplatinic acid- Under isopropanol solution and hydrogen-containing silicone oil, mix and stir for 30-50 minutes, and then solidify at room temperature for 1-2 days to obtain the finished product. Its physical and mechanical performance index test was carried out. The test results are listed in Table 1.

Embodiment 2

[0020] The method of Example 1 was repeated according to the content of each component specified in Table 1 below, and the test results are listed in Table 1.

Embodiment 3

[0022] The method of Example 1 was repeated according to the content of each component specified in Table 1 below, and the test results are listed in Table 1.

[0023] Table 1 Table of components of Examples 1-3.

[0024]

[0025] 1. Performance testing

[0026] Hardness (Shore A) is tested according to GB / T 531-1999; tensile strength and elongation at break are tested according to GB / T 528-1998; thermogravimetric analysis is tested according to ISO11358-1997.

[0027] 1. Test the performance of the high-temperature-resistant silicone rubber prepared in Examples 1-3, and compare it with the national standard and products from other origins. The comparison results are shown in Table 2.

[0028] Table 2 Comparison table of the rational index of the high temperature resistant silicone rubber prepared in Example 1-3 with the national standard and products from other origins.

[0029]

[0030] It can be seen from Table 2 that the change rate of hardness of the present inven...

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Abstract

The invention belongs to the technical field of silicone rubber materials and relates to modified heat-resistant silicone rubber and a preparation method thereof. The modified heat-resistant siliconerubber is prepared from the following raw materials in parts by weight: 100-150 parts of vinyl silicone oil, 100-120 parts of quartz powder, 14-20 parts of a heat-resistant additive, 5-10 parts of a crosslinking agent, 10-20 parts of carbon black, 2-5 parts of an inhibitor, 5-10 parts of chloroplatinic acid and 50-60 parts of anhydrous isopropanol. The modified heat-resistant silicone rubber has the advantages of high strength, good elasticity, strong aging resistance and the like, and the preparation method is simple to operate.

Description

technical field [0001] The invention belongs to the technical field of silicone rubber materials, and relates to a modified heat-resistant silicone rubber and a preparation method thereof. Background technique [0002] Due to its excellent high and low temperature resistance, hydrolytic stability, weather resistance, electrical insulation and other characteristics, silicone rubber is widely used in the fields of electronics, aviation, automobiles, medical and health. The operating temperature range of ordinary silicone rubber is -50-200°C; above 250°C, silicone rubber materials are used for modern high-precision and high-power electronic components; for modern high-speed automobiles and military industrial engines. The temperature-resistant material requirements around the engine Higher operating temperature puts higher demands on the silicone rubber used for sealing. [0003] At present, there are two ways to improve the heat resistance of silicone rubber by changing the c...

Claims

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Application Information

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IPC IPC(8): C08L83/07C08L83/04C08L83/05C08K3/36C08K3/04C08K3/16C08K3/34C08K3/22
CPCC08L83/04C08L2201/08C08L2205/025C08L2205/035C08K3/00C08K3/36C08K3/04C08K3/16C08K3/34C08K2003/2213C08K2003/2272
Inventor 刘梦菲
Owner SHENYANG SAIYA RUBBER PRODS
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