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Method for preparing electric insulating glue

A production method and electrical insulation technology, applied in the direction of organic insulators, rubber insulators, etc., can solve the problems of difficult filtration, electrical insulating glue containing many impurities, poor insulation performance of composite insulators and composite arrester jackets, etc., and achieve easy filtration and insulation performance. Good results

Active Publication Date: 2011-06-08
DONGJUE SILICONE NANJING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a method for making electrical insulating glue to solve the problems in the prior art that the electrical insulating glue contains too many impurities and is not easy to filter, and the composite insulator and composite lightning arrester jacket insulation performance is poor.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] First, knead methylvinyl silicone raw rubber, fumed silica and silicone oil in a closed rubber mixer at a weight ratio of 4:3:1 until the three are evenly mixed; , the thin-pass roll distance used during thin-pass is 0.5mm, and the number of thin-pass is 5 times; then enter the oven and bake at 150°C for 2 hours, then leave and cool to obtain the first mixed compound.

[0021] Secondly, knead methylvinyl silicone raw rubber, aluminum hydroxide and silicone oil through a closed rubber mixer in a weight ratio of 4:5:1 until the three are evenly mixed; The thin pass roller pitch used during pass is 0.5mm, and the number of thin pass is 5 times; then enter the oven and bake at 150°C for 2 hours, then take out the oven and cool down to obtain the second compound compound.

[0022] Finally, after the first mixed rubber and the second mixed rubber are kneaded into a large mass at a weight ratio of 1:1, because the first mixed rubber and the second mixed rubber become harder af...

Embodiment 2

[0027] First, knead methylvinyl silicone raw rubber, fumed silica and silicone oil in a weight ratio of 4:3:1 through a closed rubber mixer until the three are evenly mixed to obtain the first mixed rubber material.

[0028] Next, knead methylvinyl silicone raw rubber, aluminum hydroxide and silicone oil in a weight ratio of 4:5:1 through a closed rubber mixer until the three are evenly mixed to obtain a second mixed rubber material.

[0029] Finally, after kneading the first mixed rubber material and the second mixed rubber material according to the weight ratio of 1:1 into a large mass, the mixed rubber material is re-milled with an open rubber mixing machine, and the roll distance of the open rubber mixing machine is 12mm, the obtained rubber material is filtered through a filter screen with a mesh number of 28, 28, 150 and 200, and the filtered rubber material is an electrical insulating rubber.

[0030] In this embodiment, when the third mixed rubber material contains 450...

Embodiment 3

[0035] First, knead methylvinyl silicone raw rubber, fumed silica and silicone oil in a closed rubber mixer at a weight ratio of 4:5:1 until the three are evenly mixed; , the thin-pass roll distance used during thin-pass is 2mm, and the number of thin-pass is 3 times; then enter the oven and bake at 120°C for 2 hours, then leave and cool to obtain the first mixed compound.

[0036] Secondly, knead methylvinyl silicone raw rubber, aluminum hydroxide and silicone oil through a closed rubber mixer at a weight ratio of 2:8:0 until the three are evenly mixed; The thin-pass roller pitch used during pass is 2mm, and the number of thin-pass is 3 times; then enter the oven and bake at 120°C for 3 hours, then leave and cool to obtain the second compound compound.

[0037] Finally, after kneading the first mixed rubber material and the second mixed rubber material and the plasticizer into a large mass according to the weight ratio of 2:7.5:0.5, since the first mixed rubber material and t...

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Abstract

The invention relates to a method for preparing electric insulating glue, which comprises the following steps of: (1) uniformly mixing and kneading silicolous glue, a reinforcing agent and a plasticizer to obtain a first mixed glue material, wherein the silicolous glue accounts for 40-70 percent, the reinforcing agent accounts for 20-50 percent, and the plasticizer accounts for 5-20 percent by mass percentage; (2) uniformly mixing and kneading the silicolous glue, a filling agent and the plasticizer to obtain a second mixed glue material, wherein the silicolous glue accounts for 20-40 percent, the filling agent accounts for 50-80 percent, and the plasticizer accounts for 0-10 percent by mass percentage; and (3) uniformly mixing and kneading the first mixed glue material, the second mixed glue material and the plasticizer to obtain a third mixed glue material, wherein the first mixed glue material accounts for 20-50 percent, the second mixed glue material accounts for 50-80 percent, and the plasticizer accounts for 0-10 percent by mass percentage; and remilling and filtering the third mixed glue material to obtain the electric insulating glue. The invention has the advantages of easy filtration of impurities in the glue material and good insulating performance of the glue material.

Description

technical field [0001] The invention relates to the technical field of silicone rubber insulating materials, in particular to a method for making electrical insulating glue. Background technique [0002] The electrical insulating glue produced by the existing production technology is not easy to filter, and there are many impurities in the rubber material. When using this kind of electrical insulating glue to make composite insulators and composite lightning arrester jackets, the insulation performance is poor and quality problems are prone to occur. [0003] Existing electrical insulation glue production method is as follows: [0004] Knead the raw silica gel, reinforcing agent, filler and plasticizer, mix evenly, re-mill and roll the obtained mixed rubber, and then filter it. Among them, the raw silica gel accounts for 30%-50% by mass percentage, and the reinforcement The agent accounts for 10%-30%, the filler accounts for 30%-50%, and the plasticizer accounts for 5%-20%....

Claims

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Application Information

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IPC IPC(8): C08L83/07C08L83/04C08K3/36C08K3/22H01B3/28
Inventor 徐党生
Owner DONGJUE SILICONE NANJING CO LTD
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