Flame-retardant heat conductive insulation silicone rubber product for power equipment and preparing method of flame-retardant heat conductive insulation silicone rubber product

A heat-conducting insulation and power equipment technology, applied in the field of flame-retardant heat-conducting insulating silicone rubber products and its preparation, can solve the problems of burning insulating materials, fire, short-circuit fault economy, etc., and achieve the effect of preventing materials from gelling

Active Publication Date: 2016-10-26
北京天衣鼎嘉工程技术有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] If the temperature of the busbar is too high, overheating will cause insulation aging or even burn the insulation material, resulting in short-circuit faults and major economic losses
The contact resistance at the joint will increase due to the increase of temperature, thus forming a vicious circle; in severe cases, it can lead to fire

Method used

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  • Flame-retardant heat conductive insulation silicone rubber product for power equipment and preparing method of flame-retardant heat conductive insulation silicone rubber product
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  • Flame-retardant heat conductive insulation silicone rubber product for power equipment and preparing method of flame-retardant heat conductive insulation silicone rubber product

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preparation example Construction

[0051] A method for preparing a flame-retardant and heat-conducting silicone rubber insulating silicone rubber product for power equipment, comprising the steps of:

[0052] b. Add the formulated amount of vinyl silicone oil and hydrogen-containing silicone oil into the stirring tank, stir evenly at a speed of 40-60rpm, then add the prepared alumina filler, adjust the speed to 50-120rpm; heat to 80-120°C Finally, turn on the vacuum to remove air bubbles and small molecular substances, and maintain it for 1.5-2 hours at a speed of 50-120rpm, so that the materials in the stirring tank are evenly mixed;

[0053] c. After the material obtained in step b is cooled to room temperature, first add the formulated amount of inhibitor, stir evenly at a speed of 40-80rpm, then add the formulated amount of catalyst, mix evenly at a speed of 40-80rpm, and then vacuumize Until the air bubbles in the material are completely extracted, the rubber material is obtained;

[0054] d. Place the ru...

Embodiment 1

[0060] a. Pre-preparation of various raw materials: First, mix 50 μm large-sized alumina particles and 6 μm small-sized alumina particles in a mixer according to the mass ratio of 4:6 to obtain alumina fillers, and pack them for use;

[0061] Stir and mix 99 kg of vinyl silicone oil with a viscosity of 500 mPa·s and 1 kg of acetylene cyclohexanol at a speed of 40 rpm to obtain a vinyl silicone oil inhibitor containing 0.1% of acetylene cyclohexanol, which is ready for use;

[0062] Mix 2.3kg of methyl silicone oil with a viscosity of 100mPa·s and 1kg of a platinum catalyst with a content of 0.005wt% at a speed of 45rpm to obtain a catalyst containing 0.0015wt% platinum per kilogram, which is ready for use;

[0063] b. According to the formula requirements, add 55 parts of vinyl silicone oil with a viscosity of 3000mPa·s and a vinyl content of 1.2, and 45 parts of hydrogen-containing silicone oil with a viscosity of 100mPa·s and a hydrogen content of 0.1% into the stirring tank ...

Embodiment 2

[0070] Embodiment 2 is different from Embodiment 1 in that, taking the production of a 2mm flat silicone rubber sheet as an example, in step d, the distance between the pressure roller in the calender and the transmission belt is adjusted to 2 ± 0.2mm and the transmission belt is adjusted to The transmission speed is 20m / min, and then pour the rubber compound obtained in step c onto the PE film pre-laid on the conveyor belt, and vulcanize and mold it at a temperature of 120°C and a vulcanization time of 30s to obtain a sheet-shaped barrier. Semi-finished products of heat-conducting insulating silicone rubber products.

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Abstract

The invention discloses a flame-retardant heat conductive insulation silicone rubber product for power equipment. The flame-retardant heat conductive insulation silicone rubber product comprises a bonding layer and a heat conductive insulation layer, wherein the bonding layer is arranged below the heat conductive insulation layer, the thickness of the bonding layer ranges from 0.05 mm to 0.1 mm, the thickness of the heat conductive insulation layer ranges from 0.5 mm to 3.5 mm, and the heat conductive insulation layer comprises a silicon rubber insulation layer. The invention further discloses a preparing method of the silicon rubber product. The obtained silicon rubber product is easy to construct and capable of being tightly attached to power equipment, heat generated in the running process of power equipment can be effectively led out, and human casualty accidents caused by pollution flashover, condensate flashover, small animal short circuiting and naked busbars in transformer substations are also effectively eliminated.

Description

technical field [0001] The invention belongs to the technical field of electrical insulating materials, and in particular relates to a flame-retardant and heat-conducting insulating silicone rubber product used for electrical equipment and a preparation method thereof. Background technique [0002] In recent years, with the development of industry, environmental pollution has become increasingly serious, and the insulation protection of power system substations, especially the insulation protection of old substations, has become increasingly important. The use of heat shrinkable materials in the comprehensive insulation protection of substations can reduce the occurrence of such accidents, improve the reliability of the power supply system, and is of great significance to the safe operation of the power system. However, when the heat shrinkable materials are used to transform the power system equipment, it is necessary to It is extremely inconvenient to disassemble the equip...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L83/05C08K3/22B32B27/38B32B27/18B32B27/08B32B27/32B32B17/02B32B17/10B32B15/20B32B15/08B32B7/06B32B7/12B32B33/00B32B37/12
Inventor 冯建国苏虎山韩向楠
Owner 北京天衣鼎嘉工程技术有限公司
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