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Micro-nano silicone rubber composite material for composite insulator and preparation method of micro-nano silicone rubber composite material

A technology of compound insulator and silicone rubber, applied in the field of micro-nano silicone rubber compound compound and its preparation, can solve the problems of affecting mechanical properties, large addition amount, deteriorating processing properties and mechanical properties, etc.

Inactive Publication Date: 2015-05-13
ANHUI EFFIE BRANCH ELECTRICAL EQUIP MFR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the present anti-tracking agent has the disadvantages of large addition amount and poor compatibility with silicone rubber, which seriously deteriorates its processing performance and mechanical properties.
Chinese patent CN1923899A uses ultra-fine treatment of aluminum hydroxide, and then treats it with a coupling agent to reduce the amount of aluminum hydroxide and improve tracking resistance, but the amount added is too large, which affects its mechanical properties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] First, add 100 parts of methyl vinyl silicone rubber raw rubber (average molecular weight is 500,000 to 700,000, and the molar percentage of vinyl is 0.05 to 0.3%) into the kneader, and add 25 parts of white carbon black, 30 parts Micron aluminum hydroxide, 15 parts of nano aluminum hydroxide, 1 part of KH-560 silane coupling agent and 1 part of hexamethyldisilazane structural control agent, after adding all the materials, put them under vacuum (-0.08MPa) at 160°C ) under the condition of kneading for 1.5 hours, and discharge; then put it into an open mill, and knead until the rubber material is smooth to obtain a mixed rubber. After the mixed rubber is parked for 24 hours, roll the mixed rubber on the open mill, add 1.5 parts of bis-pentasulfurizing agent, and pass it 5 times to obtain the micronano aluminum hydroxide / silicone rubber insulating glue for composite insulators material.

Embodiment 2

[0018] First, add 100 parts of methyl vinyl silicone rubber raw rubber (the average molecular weight is 500,000 to 700,000, and the molar percentage of vinyl is 0.05 to 0.3%) into the kneader, and add 25 parts of white carbon black, 40 parts Micron aluminum hydroxide, 10 parts of nano aluminum hydroxide, 1 part of KH-560 silane coupling agent and 1 part of hexamethyldisilazane structural control agent, after adding all the materials, put them under vacuum (-0.08MPa) at 160°C ) under the condition of kneading for 1.5 hours, and discharge; then put it into an open mill, and knead until the rubber material is smooth to obtain a mixed rubber. After the mixed rubber is parked for 24 hours, roll the mixed rubber on the open mill, add 1.5 parts of bis-pentasulfurizing agent, and pass it 5 times to obtain the micronano aluminum hydroxide / silicone rubber insulating glue for composite insulators material.

Embodiment 3

[0020] First, add 100 parts of methyl vinyl silicone rubber raw rubber (average molecular weight is 500,000 to 700,000, and the molar percentage of vinyl is 0.05 to 0.3%) into the kneader, and add 25 parts of white carbon black, 35 parts Micron aluminum hydroxide, 12 parts of nano aluminum hydroxide, 1 part of KH-560 silane coupling agent and 1 part of hexamethyldisilazane structural control agent, after adding all the materials, put them under vacuum (-0.08MPa) at 160°C ) under the condition of kneading for 1.5 hours, and discharge; then put it into an open mill, and knead until the rubber material is smooth to obtain a mixed rubber. After the mixed rubber is parked for 24 hours, roll the mixed rubber on the open mill, add 1.5 parts of bis-pentasulfurizing agent, and pass it 5 times to obtain the micronano aluminum hydroxide / silicone rubber insulating glue for composite insulators material.

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Abstract

The invention discloses a micro-nano silicone rubber composite material for a composite insulator and a preparation method of the micro-nano silicone rubber composite material. The micro-nano silicone rubber composite material comprises the following raw material components in parts by mass: 100 parts of raw silicone rubber, 15-30 parts of fumed silica, 30-40 parts of micron aluminium hydroxide, 0-15 parts of nanometre aluminium hydroxide, 1-2 parts of a structurized control agent and 1-26 parts of a silane coupling agent. According to the invention, a micro-nano tracking-resistant filler is compounded with the silicon rubber in a proper volume ratio and by a proper process to form a special interface intermediate phase, namely, the microstructure and the compactness of the composite material are obviously improved and enhanced respectively, the content of aluminium hydroxide is reduced, the mechanical performance of the composite material is kept, and the tracking-resistant silicon rubber composite material is prepared.

Description

technical field [0001] The invention relates to a micro-nano silicone rubber composite material for composite insulators and a preparation method thereof. The invention is mainly applied to composite insulators and belongs to the application field of rubber composite materials. Background technique [0002] Composite insulators consist of glass fiber composite core rods and silicone rubber sheds. Compared with traditional porcelain insulators, composite insulators have the advantages of light weight, high strength, strong pollution flashover resistance, no zero value, simple manufacturing process, and convenient operation and maintenance. They have developed rapidly in my country in recent years. The silicone rubber sheath plays the role of bearing the high voltage electric field and protecting the mandrel on the outside of the mandrel of the composite insulator. Therefore, the performance requirements of the silicone rubber are insulation, high and low temperature resistanc...

Claims

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Application Information

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IPC IPC(8): C08L83/07C08K13/02C08K3/36C08K3/22C08K5/14C08K5/5445C08J3/24
Inventor 徐学东徐佩
Owner ANHUI EFFIE BRANCH ELECTRICAL EQUIP MFR
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