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A kind of low dielectric loss fluorosilicone compound rubber and preparation method thereof

A technology of mixing rubber and low medium is applied in the field of fluorosilicone rubber compound with low dielectric loss and its preparation, which can solve the problem of serious dielectric loss of fluorosilicone rubber, and achieve the effects of excellent oil resistance and excellent low temperature resistance.

Active Publication Date: 2020-04-21
新元化学(山东)股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, especially the serious dielectric loss problem of the existing fluorosilicone rubber, the present invention provides a low dielectric loss fluorosilicone compound and its preparation method. The fluorosilicone compound has a lower dielectric loss

Method used

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  • A kind of low dielectric loss fluorosilicone compound rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Take 100 parts of oligomer / ring body content 0.3% fluorosilicone raw rubber, add 12 parts of ring body content 4% hydroxyl fluorosilicone oil in batches to the open mill, 50 parts of specific surface area 250m 2 / g of fumed white carbon black, after mixing evenly, carry out vacuuming and heat treatment at 150°C×2h, the temperature drops to 50°C, add 1 part of cerium oxide, and add 0.8 parts of 2,5-dimethyl- 2,5-bis (tert-butylperoxy) hexane (hereinafter referred to as: double two five), thin pass, the next piece, the conditions are 170 ℃ × 15min one-stage vulcanization and 200 ℃ × 4h two-stage vulcanization preparation Test piece, to test the basic performance, oil resistance and dielectric loss.

Embodiment 2

[0032] Take 100 parts of oligomer / ring body content of 0.3% fluorosilicone raw rubber, add 12 parts of ring body content of 1% hydroxyl fluorosilicone oil in batches to the open mill, 50 parts of specific surface area 250m 2 / g of fumed white carbon black, after mixing evenly, carry out vacuuming and heat treatment at 150°C×2h, the temperature is lowered to 50°C, add 3 parts of iron oxide, add 0.8 parts of Shuangerwu to the open mill, Botong, Xiatong The test pieces were prepared by performing one-stage vulcanization at 170°C for 15 minutes and two-stage vulcanization at 200°C for 4 hours to test basic performance, oil resistance and dielectric loss.

Embodiment 3

[0034] Take 100 parts of oligomer / ring body content of 0.4% fluorosilicone raw rubber, add 10 parts of ring body content of 1% hydroxyl fluorosilicone oil in batches to the open mill, 47 parts of specific surface area 200m 2 / g of fumed white carbon black, after mixing evenly, carry out vacuuming and heat treatment at 150°C×2h, the temperature is lowered to 50°C, add 3 parts of iron oxide, add 0.8 parts of Shuangerwu to the open mill, Botong, Xiatong The test pieces were prepared by performing one-stage vulcanization at 170°C for 15 minutes and two-stage vulcanization at 200°C for 4 hours to test basic performance, oil resistance and dielectric loss.

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Abstract

The invention relates to a low-dielectric-loss fluorosilicon rubber compound and a preparation method thereof. The rubber compound is prepared from the following raw materials of: in parts by mass, 100 parts of fluorosilicon crude rubber, 1-30 parts of hydroxyfluorosilicone oil, 30-80 parts of reinforcing filler, 1-30 parts of a heat-resistant additive and 0.5-4 parts of a cross-linking agent, wherein the content of oligomer / cyclized matter in the fluorosilicon crude rubber is controlled within 0.5%, and the content of cyclized matter in the hydroxyfluorosilicone oil is controlled within 5%. The product has excellent low temperature resistance, high temperature resistance, oil resistance and excellent low dielectric loss, can be used for a long time in a harsh insulating-oil environment, and can be better applied to oil immersion transformers, oil immersion switches, capacitors and communication in oil of a power supply and distribution system of industrial and mining enterprises and civil buildings and other fields.

Description

technical field [0001] The invention relates to a fluorosilicon rubber compound, in particular to a low dielectric loss fluorosilicon rubber compound used in the field of electric insulating oil and a preparation method thereof. Background technique [0002] The electrical insulating oil used as the dielectric of electrical equipment in the electrical insulation application field mainly involves transformer oil, oil switch oil, capacitor oil and cable oil, etc. Usually, in practical applications, on the one hand, electrical insulating oil is mostly low pour point lubricating oil, When electrical equipment operates at low temperature, there is a certain low temperature resistance requirement for the material; on the other hand, because the electrical insulating oil is subjected to the heat and oxygen under the influence of the electric field for a long time, it is extremely easy to cause oxidation, which in turn causes the exchange of rubber materials. Joint aging, resulting ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/08C08K13/02C08K3/36C08K3/22C08K5/14C08K3/34
CPCC08K2003/2213C08K2003/2272C08L83/08C08L2201/08C08L2205/025C08K3/36C08K3/22C08K5/14C08K13/02C08K3/34
Inventor 侯志伟夏子祥胡百廷于鹏飞解乐福
Owner 新元化学(山东)股份有限公司
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