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Preparation method of silicon-rubber composite molding material

A technology of composite mold and silicone rubber, which is applied in the field of preparation of silicone rubber composite molding materials, can solve the problems of loose connection of insulating sleeves to special-shaped joints, damage to the insulation performance of insulating materials, and difficulty in fully sealing, etc., to achieve good durability. Outdoor aging performance, no need for secondary vulcanization, fast vulcanization effect

Inactive Publication Date: 2018-03-20
董绍光
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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 equipment during a power outage, and the insulating sleeve is not tightly connected to the special-shaped joint, so it is difficult to achieve full sealing, and as the temperature of the busbar rises, its life will decline sharply. For an environment with high humidity, it will Due to the serious moisture absorption of the heat source, the insulation performance of the insulating material will be further damaged, which may lead to breakdown discharge
Moreover, the casing used in the open air environment is easy to age, deform and damage, and has a short service life. It is inconvenient to replace the casing and the cost is high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Weigh the parts by weight of each raw material as follows: methyl vinyl silicone rubber 100, fumed silica 35, precipitated silica 8, hydroxyl silicone oil 2, silane coupling agent surface-treated activated aluminum hydroxide 50, Titanate coupling agent surface-treated aluminum hydroxide 10, zinc stearate 0.2, iron oxide red 5, cerium oxide 0.8 and bis-pentasulfurizing agent 0.8;

[0041] (2) Put the methyl vinyl silicone rubber into the vacuum kneader, heat and knead for 3 minutes; continue to add fumed silica and precipitated silica, divide the silica into four parts, and add one part each time , the interval time is 10 minutes, when the material in the kneader becomes a mass, add hydroxyl silicone oil, and knead for 10 minutes; continue to add aluminum hydroxide, divide the aluminum hydroxide into four parts, add one part each time, and the interval time is 10 minutes; When the material in the kneader becomes agglomerated, add zinc stearate, red iron oxide and cer...

Embodiment 2

[0045](1) Weigh the parts by weight of each raw material as follows: methyl vinyl silicone rubber 100, fumed silica 38, precipitated silica 10, hydroxyl silicone oil 4, silane coupling agent surface-treated activated aluminum hydroxide 30, Titanate coupling agent surface-treated aluminum hydroxide 30, zinc stearate 0.3, iron oxide red 6, cerium oxide 1 and bis-pentasulfurizing agent 1.2;

[0046] (2) Put the methyl vinyl silicone rubber into a vacuum kneader, heat and knead for 4 minutes; continue to add fumed silica and precipitated silica, divide the silica into four parts, and add one part each time , the interval time is 12 minutes, when the material in the kneader becomes a mass, add hydroxyl silicone oil and knead for 12 minutes; continue to add aluminum hydroxide, divide the aluminum hydroxide into four parts, add one part each time, and the interval time is 12 minutes; When the material in the kneader becomes agglomerated, add zinc stearate, red iron oxide and cerium o...

Embodiment 3

[0050] (1) The parts by weight of each raw material are weighed as follows: 100 methyl vinyl silicone rubber, 40 fumed silica, 12 precipitated silica, 6 hydroxyl silicone oil, 40 silane coupling agent surface-treated activated aluminum hydroxide, Titanate coupling agent surface-treated aluminum hydroxide 40, zinc stearate 0.5, iron oxide red 8, cerium oxide 1.2 and bis-pentasulfurizing agent 1.8;

[0051] (2) Put the methyl vinyl silicone rubber into a vacuum kneader, heat and knead for 5 minutes; continue to add fumed silica and precipitated silica, divide the silica into four parts, and add one part each time , the interval time is 15 minutes, when the material in the kneader becomes a mass, add hydroxyl silicone oil, and knead for 15 minutes; continue to add aluminum hydroxide, divide the aluminum hydroxide into four parts, add one part each time, and the interval time is 15 minutes; When the material in the kneader becomes agglomerated, add zinc stearate, red iron oxide an...

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Abstract

The invention relates to the field of silicon-rubber composite materials, and particularly relates to a preparation method of a silicon-rubber composite molding material. The method adopts methylvinylsilicon rubber, fumed silica, precipitated silica, hydroxyl silicone oil, silane coupling agent surface treatment type active aluminium hydroxide, titanate coupling agent surface treatment type aluminium hydroxide, zinc stearate, iron oxide red, cerium oxide and 2,5-dimethyl-2,5-dihexane as raw materials to prepare the silicon-rubber composite molding material with reliable mechanical strength, excellent electrical performance, good hydrophobicity and flame retardance and better outdoor-aging resistance. The silicon-rubber composite molding material is designed for a hot die-pressing vulcanization molding production process, can be applied in production and manufacture of electrical-equipment insulation sleeves and products in related fields, and also can be applied to sealing products and damping and shock-absorbing products for hot die-pressing vulcanization molding.

Description

technical field [0001] The invention relates to the field of silicone rubber composite materials, in particular to a method for preparing silicone rubber composite molding materials. Background technique [0002] With the development of industry and the increasingly serious environmental pollution, the insulation protection of power system substations, especially the insulation protection of old substations, is becoming more and more important. Pollution flashover, condensation flashover, icing trip, small animal short circuit, and personal injury accidents caused by bare busbars in substations occur from time to time. 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 i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L83/04C08K13/06C08K9/06C08K3/22C08K9/04C08K3/36C08K5/098C08K5/14
CPCC08K2003/2213C08K2003/2227C08K2201/003C08K2201/006C08K2201/011C08L83/04C08L2201/02C08L2201/08C08L2205/025C08K13/06C08K9/06C08K3/22C08K9/04C08K3/36C08K5/098C08K5/14
Inventor 董绍光
Owner 董绍光
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