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Low resin mica tape organosilicon adhesive and method for preparing same

A technology of less glue mica and silicone adhesives, applied in the direction of adhesives, coatings, etc., can solve the problems of poor compatibility between silicone resin and silicone rubber, and achieve improved similarity, good compatibility, and good integrity. Effect

Active Publication Date: 2008-12-31
ZHUZHOU TIMES ELECTRIC INSULATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of this patent is to solve the problem that the compatibility between silicone resin and silicone rubber is not good enough in the current railway traction motor insulation system using C-level silicone insulation system

Method used

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  • Low resin mica tape organosilicon adhesive and method for preparing same
  • Low resin mica tape organosilicon adhesive and method for preparing same
  • Low resin mica tape organosilicon adhesive and method for preparing same

Examples

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example 1

[0020] Use the Si-H bond-containing MQ resin to modify the less colloidal mica with organic silicone adhesive. By adding the silicon-hydrogen bond (Si-H)-containing MQ resin to the high-molecular-weight silicone rubber to improve the silicone rubber and silicone Compatibility of the resin, adding MQ resin to the silicone rubber will not only form a jujube core structure, with high cohesion, and there are silicone-hydrogen bonds in the modified less colloidal mica with organic silicone adhesive, which will be cured in the subsequent immersion The process reacts with the active groups in the silicone resin impregnating varnish together to form physical and chemical compatibility, and an insulating system with good impregnation effect is obtained.

[0021] The specific modification scheme of less colloidal mica with organic silicone adhesive is as follows:

[0022] (1) Preparation of high molecular weight silicone rubber;

[0023] Take 100 parts of octamethylcyclotetrasiloxane, 8 par...

example 2

[0031] Use the Si-H bond-containing MQ resin to modify the less colloidal mica with organic silicone adhesive. By adding the silicon-hydrogen bond (Si-H)-containing MQ resin to the high-molecular-weight silicone rubber to improve the silicone rubber and silicone Compatibility of the resin, adding MQ resin to the silicone rubber will not only form a jujube core structure, with high cohesion, and there are silicone-hydrogen bonds in the modified less colloidal mica with organic silicone adhesive, which will be cured in the subsequent immersion The process reacts with the active groups in the silicone resin impregnating varnish together to form physical and chemical compatibility, and an insulating system with good impregnation effect is obtained.

[0032] The specific modification scheme of less colloidal mica with organic silicone adhesive is as follows:

[0033] (1) Preparation of high molecular weight silicone rubber;

[0034] Take 120 parts of octamethylcyclotetrasiloxane, 3 par...

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Abstract

A low resin mica tape silicone adhesive and a preparation method thereof are disclosed. Based on structural similarity principle, potential reactable radicels are introduced into adhesive to prepare low resin mica tape silicone adhesive which matches with solventless impregnate silicone resin; the mica tape can be prepared into a gapless insulated structure with good integrity after being processed with vacuum pressure impregnation by the impregnate resin. The invention introduces Si-H bond-containing MQ resin to modify low resin mica tape silicone adhesive and improves the compatibility of silicon rubber with silicone resin by adding Si-H bond-containing MQ resin to the macromolecule silicon rubber. The addition of MQ resin into the silicon rubber can help to form a jujube seed structure which is high strong in cohesive force; meanwhile, the modified low resin mica tape silicone adhesive has Si-H bonds which will react with the active radicels in the silicone resin impregnate varnish during the following impregnation and curing processes, developing compatibility both physically and chemically, thus obtaining an insulating system with good impregnating effect.

Description

Technical field [0001] The present invention relates to a preparation method, in particular to a less colloidal mica organic silicone adhesive and a preparation method thereof. It is mainly aimed at the current railway locomotive traction motor using solvent-free organic silicon impregnating varnish as an impregnating material. The new type of less colloidal mica has organic silicone adhesive. Background technique [0002] In view of the current high-speed and heavy-load development trend of railways, realizing high-power, small and light-weight locomotive traction motors and improving the reliability of motor operation have become important issues, and the insulation system of the motor is particularly critical to achieving the above goals. Famous foreign traction motor manufacturers have generally adopted H-level or higher insulation for high-speed locomotive traction motors, and successively adopted C-level insulation systems, the most important of which is the currently commo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/04C08G77/38C09D183/04C09D5/25
Inventor 衷敬和姜其斌黎勇陈子荣
Owner ZHUZHOU TIMES ELECTRIC INSULATION
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