Silicone rubber insulating material, silicone rubber insulator and preparation method and application of silicone rubber insulating material and silicone rubber insulator

A silicone rubber insulation and silicone rubber technology, which is applied in the field of insulating materials, can solve the problems that the aging performance of silicone rubber can not be effectively improved.

Active Publication Date: 2022-03-25
STATE GRID BEIJING ELECTRIC POWER +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to provide a silicone rubber insulating material, a silicone rubber insulator and its preparation method and application, to solve the problem that the prior art cannot effectively improve the aging resistance of silicone rubber

Method used

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  • Silicone rubber insulating material, silicone rubber insulator and preparation method and application of silicone rubber insulating material and silicone rubber insulator
  • Silicone rubber insulating material, silicone rubber insulator and preparation method and application of silicone rubber insulating material and silicone rubber insulator
  • Silicone rubber insulating material, silicone rubber insulator and preparation method and application of silicone rubber insulating material and silicone rubber insulator

Examples

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preparation example Construction

[0026] For the preparation method of the hydrogen-bonding self-healing material formed by the polymerization of the above-mentioned polyacid and polyamine, refer to the preparation method of the hydrogen-bonding self-healing material common in the art. In order to flexibly control the number of reversible hydrogen bonds of the hydrogen-bonding self-healing material, the hydrogen-bonding self-healing material can be prepared by itself before preparing the silicone rubber insulating material of the present application. In some embodiments, the preparation method of the hydrogen-bonding self-healing material Including: in an inert gas environment, mix polyacid and polyamine and conduct heating reaction to obtain the first reaction product; extract the above first reaction product, and the lower layer is the second reaction product; remove the solvent and dried to obtain a hydrogen-bonded self-healing material.

[0027] In some embodiments, the above-mentioned inert gas is prefera...

Embodiment 1

[0040] (1) Put 1 part of diethylenetriamine and 2.5 parts of dimer acid (80% dimer content) into a three-necked flask, continuously feed nitrogen into the three-necked flask, stir mechanically at a uniform speed, and react at a temperature of 160°C for 24 hour to obtain the first reaction product;

[0041] (2) Dissolving the first reaction product in the mixed solution of chloroform / methanol / distilled water, after standing for stratification, using a separatory funnel to take out the lower layer mixed solution to obtain the second reactant;

[0042] (3) Pour the mixed solution of the lower layer into a rotary evaporator, remove most of the solvent, and then place the remaining mixed solution in a vacuum oven at 50°C. After vacuum treatment for 24 hours, a hydrogen-bonded self-healing material was obtained. Molecular weight 610~660;

[0043] (4) Dissolve 0.5 parts of hydrogen-bonded self-healing materials in chloroform solution to obtain solution A, and dissolve 100 parts of s...

Embodiment 2

[0047] The difference from Example 1 is that in step (4), 1 part of hydrogen-bonding self-healing material is dissolved in chloroform solution to obtain solution A.

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Abstract

The invention provides a silicone rubber insulating material, a silicone rubber insulator and a preparation method and application thereof. The silicone rubber insulating material comprises the following components in parts by mass: 100 parts of a silicone rubber raw material, 0.5-5 parts of a hydrogen bond type self-repairing material and 1-5 parts of a curing agent. The silicon rubber insulating material provided by the invention contains the hydrogen bond type self-repairing material, and the silicon rubber insulating material can obtain a self-repairing characteristic by utilizing the characteristic that the hydrogen bond type self-repairing material can form multiple reversible hydrogen bonds. Specifically, after the silicone rubber electrical tree channel shrinks, the hydrogen bond self-repairing material on the inner wall of the channel can form multiple hydrogen bonds, so that the electrical tree channel is effectively connected, a dielectric reinforcing effect is achieved on an electrical tree damaged area, the regrowth process of the electrical tree is inhibited, and the electrical tree damage is reduced. And the operation safety of the high-voltage power equipment is prevented from being endangered by breakdown faults caused by the growth of the electric tree.

Description

technical field [0001] The invention relates to the technical field of insulating materials, in particular to a silicone rubber insulating material, a silicone rubber insulator, a preparation method and application thereof. Background technique [0002] With the rapid development of my country's power industry and the continuous expansion of the grid scale, the safe and stable operation of the power system has put forward higher and more stringent requirements for the reliability of power equipment. The weak points of cable lines are mostly concentrated in the connection of cable accessories. Silicone rubber is an important raw material for the production of high-voltage cross-linked cable accessories, and its insulation performance directly affects the safety and stability of cable line operation. Actual operation experience shows that electrical tree aging is one of the main causes of premature failure of silicone rubber high-voltage cable accessories. At present, research...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/04C08L77/06C08K7/26
CPCC08L83/04C08K2201/011C08L2203/20C08L77/06C08K7/26
Inventor 潘泽华林一轩郭鹏任志刚郭卫门业堃周士贻李华春及洪泉段大鹏张磊
Owner STATE GRID BEIJING ELECTRIC POWER
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