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A kind of liquid silicone rubber impregnating solution for copper bar insulation sheath and its impregnating process

A liquid silicone rubber, processing technology, applied in the direction of adhesives, adhesive additives, non-polymer adhesive additives, etc., to achieve the effect of smooth surface, compactness and excellent coating effect, and solve the problem of insulation protection

Active Publication Date: 2021-07-06
佛山市方普防护技术有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the defects and deficiencies in the existing copper bar insulation methods, the present invention aims to provide a liquid silicone rubber impregnating solution for copper bar insulation sheath and its impregnating process, so as to solve the problem of copper bar insulation protection and extend the copper bar service life

Method used

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  • A kind of liquid silicone rubber impregnating solution for copper bar insulation sheath and its impregnating process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The present embodiment prepares the silicone rubber impregnation solution according to the following steps:

[0028] 1. Put 50 parts of 5000mPa·s terminal vinyl silicone oil, 50 parts of 1500mPa·s terminal vinyl silicone oil, 50 parts of 500mPa·s terminal vinyl silicone oil, 25 parts of hexamethyldisilazane and 30 parts of zinc oxide into the kneader Kneading at room temperature for 1 hour, and adding 80 parts in ten times during the kneading process 2 / g precipitated silica and 10 parts of deionized water; then raise the temperature to 80°C and knead for 1.5h; then raise the temperature to 140°C and continue kneading for 1.5h, and finally vacuumize and knead for 1h at a vacuum degree of 0.1MPa and a temperature of 140°C , cooled to room temperature to obtain the kneaded final product;

[0029] 2. Put the kneaded final product obtained in step 1 into a planetary mixer, add 450 parts of butyl acetate and stir for 2 hours, continue to add 20 parts of hydrogen-containing ...

Embodiment 2

[0038] The present embodiment prepares the silicone rubber impregnation solution according to the following steps:

[0039] 1. Mix 70 parts of 5000mPa·s terminal vinyl silicone oil, 20 parts of 1500mPa·s terminal vinyl silicone oil, 30 parts of 500mPa·s terminal vinyl silicone oil, 20 parts of hexamethyldisilazane, tetramethyltetravinyl di Put 1 part of silazane and 25 parts of zinc oxide into the kneader, knead at room temperature for 1 hour, and add 60 parts in ten times during the kneading process. 2 / g precipitated silica and 10 parts of deionized water; then raise the temperature to 80°C and knead for 1.5h; then raise the temperature to 140°C and continue kneading for 1.5h, and finally vacuumize and knead for 1h at a vacuum degree of 0.1MPa and a temperature of 140°C , cooled to room temperature to obtain the kneaded final product;

[0040] 2. Put the kneaded final product obtained in step 1 into a planetary mixer, add 500 parts of butyl acetate and stir for 2 hours, con...

Embodiment 3

[0049] The present embodiment prepares the silicone rubber impregnation solution according to the following steps:

[0050] 1. Add 30 parts of 5000mPa·s terminal vinyl silicone oil, 75 parts of 1500mPa·s terminal vinyl silicone oil, 30 parts of 500mPa·s terminal vinyl silicone oil, 25 parts of dimethyldiethoxysilane and 20 parts of magnesium hydroxide In the kneader, knead at room temperature for 1 hour, and add 75 parts of it in ten times during the kneading process 2 / g fumed silica and 15 parts of deionized water; then raise the temperature to 80°C and knead for 1.5h; then raise the temperature to 140°C and continue kneading for 1.5h, and finally vacuumize and knead for 1h at a vacuum degree of 0.1MPa and a temperature of 140°C , cooled to room temperature to obtain the kneaded final product;

[0051] 2. Put the kneaded final product obtained in step 1 into a planetary mixer, add 550 parts of cyclohexane and stir for 2 hours, continue to add 20 parts of hydrogen-containing...

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Abstract

The invention discloses a liquid silicone rubber impregnating liquid for copper bar insulation sheath and its impregnating processing technology. The liquid silicon rubber impregnating liquid is composed of vinyl silicone oil, white carbon black, surface treatment agent, deionized water, hydrogen Silicone oil, inhibitor, catalyst, flame retardant and solvent are mixed and processed; the copper bar is impregnated with the impregnating solution, and after curing, the silicone rubber copper bar insulating sheath is obtained. The obtained liquid silicone rubber copper bar insulation sheath has excellent insulation performance, good aging resistance, good flame retardancy and long service life.

Description

technical field [0001] The invention relates to a method for insulating copper bars, in particular to a liquid silicone rubber dipping solution for insulating sheaths of copper bars and its dipping process. Background technique [0002] Copper bar insulation treatment methods mainly include epoxy resin spraying (dipping powder), heat shrinkable sleeve, encapsulation (injection molding), etc. Epoxy resin spraying (dipping powder) is to place the preheated copper bar in the fluidized bed of epoxy encapsulation material, and apply epoxy encapsulation material to the surface of the copper bar. This kind of insulating sheath is brittle and is mostly used In a static environment, when used on a car, due to shaking, it is easy to cause the envelope to crack and fall off in pieces; the insulation sheath of the heat shrinkable sleeve cannot meet the complex shape of the copper bar, and it is easy to deform and accumulate when the temperature is slightly higher , and poor weather res...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J183/07C09J183/05C09J11/04C09J11/06
CPCC08K2003/2224C08K2003/2296C08L2201/02C08L2205/025C09J11/04C09J11/06C09J183/04C08L83/04C08K13/02C08K3/22C08K3/36
Inventor 方松喜杨绪锋薛攀吴亚玲王小溪李恒
Owner 佛山市方普防护技术有限公司
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