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Liquid conductive silastic used for electric stress control and preparation method thereof

A technology of conductive silicon and electrical stress, applied in the direction of conductive materials dispersed in non-conductive inorganic materials, etc., can solve the problems of physical and mechanical performance degradation, poor affinity, high cost, etc., and achieve good mechanical properties, convenient operation and short production cycle Effect

Inactive Publication Date: 2009-11-11
GUANGDONG BIOMAX SIANDF NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the by-products of peroxide-type cross-linking will pollute the environment, and the use of metal oxides to improve electrical properties will result in storage stability, poor affinity, high cost, and reduced physical and mechanical properties, etc.

Method used

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  • Liquid conductive silastic used for electric stress control and preparation method thereof
  • Liquid conductive silastic used for electric stress control and preparation method thereof
  • Liquid conductive silastic used for electric stress control and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034]Component A contains 80 parts by weight of organopolysiloxane, 60 parts of a blend of acetylene carbon black and fumed silica, 1.0 part of fluorosilicon multipolymer, and 0.2 parts of 3000ppm platinum catalyst; component B contains organopolysiloxane 80 parts by weight of oxane, 60 parts of acetylene carbon black and fumed silica blend, 1.0 part of fluorosilicon polypolymer, 0.2 part of butynol inhibitor, 4.0 parts by weight of organohydrogenpolysiloxane; Mix at 80°C for 8 hours, then heat to 175°C and evacuate for 2 hours, stir and cool through a three-roller mill, then mix components A and B evenly at a mass ratio of 1:1, remove foam, and make the product of the present invention. After 165℃ / 10min tablet test, comprehensive physical properties: hardness, Shore A: 38; tensile strength, Mpa: 5.7; tear strength, KN / m: 29; elongation at break, %: 560; volume resistivity , Ω cm: 182; dielectric constant: 2.8.

Embodiment 2

[0036] Component A contains 60 parts by weight of organopolysiloxane, 50 parts of a blend of acetylene carbon black and fumed silica, 0.5 parts of fluorosilicon multipolymer, and 0.2 parts of 3000ppm platinum catalyst; component B contains organopolysiloxane 60 parts by weight of oxane, 50 parts of acetylene carbon black and fumed silica blend, 2.0 parts of fluorosilicon polypolymer, 0.2 part of butynol inhibitor, 3.0 parts by weight of organohydrogenpolysiloxane; Mix at 110°C for 7 hours, then heat to 160°C and evacuate for 2 hours, stir and cool through a three-roller mill, and then mix A and B components uniformly at a mass ratio of 1:1 and remove foam to make the product of the present invention. After 165 ℃ / 10min tablet test comprehensive physical properties: hardness, Shore A: 35; tensile strength, Mpa: 5.6; tear strength, KN / m: 28; elongation at break, %: 570; volume resistivity , Ω·cm: 190; dielectric constant: 2.9.

Embodiment 3

[0038] Component A contains 35 parts by weight of organopolysiloxane, 40 parts of a blend of acetylene carbon black and fumed silica, 2.0 parts of fluorosilicon multipolymer, and 0.2 parts of 3000ppm platinum catalyst; component B contains organopolysiloxane 35 parts by weight of oxane, 40 parts of acetylene carbon black and fumed silica blend, 0.5 part of fluorosilicon polypolymer, 0.2 part of butynol inhibitor, 5.0 parts by weight of organohydrogen polysiloxane; Mix at 130°C for 8 hours, then heat to 150°C and evacuate for 3 hours, stir and cool through a three-roller mill, then mix components A and B evenly at a mass ratio of 1:1, and remove foam to make the product of the present invention. After 165 ℃ / 10min tablet test comprehensive physical properties: hardness, Shore A: 33; tensile strength, Mpa: 5.5; tear strength, KN / m: 30; elongation at break, %: 578; volume resistivity , Ω·cm: 195; dielectric constant: 3.0.

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Abstract

The invention provides a liquid conductive silastic used for electric stress control, which is prepared by component A and component B according to the weight ratio of 1:1; the component A and the component B both contain 35-80 parts by weight of organopolysiloxane, 40-60 parts of acetylene black and fumed silica and 0.5-2.0 parts of fluorine silicon multipolymer; wherein, the component A further contains catalyst with routine dosage, and the component B further contains 3.0-5.0 parts by weight of organic hydrogenated polysiloxane and inhibitor with routine dosage. The invention further provides a preparation method of the above liquid conductive silastic; the component A and the component B are respectively blended for 6-8h at the temperature of 80-130 DEG C, and are then heated up to 150-175 DEG C and vacuumized for 1-3h, are stirred and cooled, go through a three-roll grinder and are blended evenly, and foam is discharged, finally the liquid conductive silastic is prepared. The liquid conductive silastic provided by the invention has better liquidity, good mechanical property and wide application prospect.

Description

technical field [0001] The invention relates to a liquid conductive silicone rubber used for electrical stress control and a preparation method thereof, especially a liquid conductive silicone used for stress control (stress cone) of 10-110KV prefabricated / cold-shrinkable silicone rubber cable accessories The rubber and its preparation method are used in the electric power industry. Background technique [0002] Electric power is an important industry related to the national economy and people's livelihood. Electric energy has become an indispensable and important energy source in people's work and life, and the transmission of electric energy has also been put on a new agenda. Power cable accessories are necessary devices to connect the cable body, connect the cable with the overhead transmission line and the equipment in each substation, and realize the transmission of electric energy. The electric field distribution is severely distorted at the shielding cut-off of the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/14C08K9/06H01B1/24
Inventor 王卫国王海鹏黄振宏
Owner GUANGDONG BIOMAX SIANDF NEW MATERIAL CO LTD
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