High-thermal conductivity insulating paint and preparation method thereof

An insulating paint, high thermal conductivity technology, applied in coatings, fire retardant coatings, etc., can solve the problems of poor thermal conductivity of insulating paint, accelerated aging of insulating paint, etc., to increase thermal conductivity, improve thermal conductivity, and reduce hydrophilic groups. Effect

Inactive Publication Date: 2019-01-18
FOSHAN CHAOHONG NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a high thermal conductivity insulating varnish and its preparation method in view of the poor thermal conductivity of the current insulating varnish and the problem that heat accumulation will accelerate the aging of the insulating varnish during the working process of the motor and electrical appliances

Method used

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  • High-thermal conductivity insulating paint and preparation method thereof

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preparation example Construction

[0026] The preparation method of thermally conductive filler additive is:

[0027] (1) Take 4,4-dihydroxybiphenyl, add potassium carbonate at a mass ratio of 1~4:3~6, add benzyltriethylammonium chloride with 2~5% potassium carbonate mass, stir and mix for 30~40min, To obtain the mixture, take the mixture and add acetone according to the mass ratio of 1~5:10~20, raise the temperature to 55~60°C and stir and mix for 15~20min, to obtain the stirred mixture, take bromopropene and add acetone according to the mass ratio of 3~5:15~20, Stir and mix for 20-30 minutes to obtain a mixed solution;

[0028] (2) Take the mixed liquid and add it dropwise to the stirring mixture according to the mass ratio of 2~5:4~7, control the dropping time for 30~50min, keep it in an oil bath at 55~65°C for 18~24h, cool to room temperature, filter, Take the filtrate for rotary evaporation, take the rotary evaporator and add dichloromethane at a mass ratio of 3~5:8~10, then add 5~10% of the rotary evapor...

Embodiment 1

[0036] The preparation method of thermally conductive filler additive is:

[0037] (1) Take 4,4-dihydroxybiphenyl and add potassium carbonate at a mass ratio of 1:3, add benzyltriethylammonium chloride with a mass ratio of 2% of potassium carbonate, stir and mix for 30 minutes to obtain a mixture, and take the mixture according to the mass ratio Add acetone at a ratio of 1:10, heat up to 55°C and stir for 15 minutes to obtain a stirred mixture. Take bromopropene and add acetone at a mass ratio of 3:15, stir and mix for 20-30 minutes to obtain a mixed solution;

[0038] (2) Take the mixed solution and add it dropwise to the stirring mixture according to the mass ratio of 2:4, control the dropping time for 30 minutes, keep it in an oil bath at 55°C for 18 hours, cool to room temperature, filter, take the filtrate and rotary evaporate, and take the rotary evaporator according to Add dichloromethane at a mass ratio of 3:8, then add 20% hydrochloric acid with a mass fraction of 5% ...

Embodiment 2

[0046] The preparation method of thermally conductive filler additive is:

[0047] (1) Take 4,4-dihydroxybiphenyl, add potassium carbonate at a mass ratio of 2:5, add benzyltriethylammonium chloride with 4% potassium carbonate mass, stir and mix for 35 minutes to obtain a mixture, and take the mixture according to the mass ratio Add acetone at 4:150, heat up to 58°C and stir and mix for 18 minutes to obtain a stirred mixture. Take bromopropene and add acetone at a mass ratio of 4:18, stir and mix for 25 minutes to obtain a mixed solution;

[0048] (2) Take the mixed solution and add it dropwise to the stirring mixture according to the mass ratio of 4:5, control the dropping time for 40 minutes, keep it in an oil bath at 58°C for 22 hours, cool to room temperature, filter, take the filtrate and rotary evaporate, and take the rotary evaporator according to Add dichloromethane at a mass ratio of 4:9, then add 20% hydrochloric acid with a mass fraction of 8% of the rotary evaporat...

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Abstract

The invention discloses high-thermal conductivity insulating paint and a preparation method thereof, belonging to the technical field of insulating paint. According to the preparation method, 4,4-dihydroxybiphenyl, potassium carbonate and the like are taken as the raw materials, bromopropylene is added to generate liquid crystal molecules, graphene oxide is added for modification, hydroxy of the liquid crystal molecules is condensed with carboxyl in graphene oxide so as to generate ester groups, and microscopic particles in a heat-conducting filler are mutually collided to transfer heat energy, so that the dispersing performance is improved, the heat conduction transfer is increased, and the thermal conductivity of the insulating paint is improved; and linseed oil and maleic anhydride aretaken as the raw materials for preparing an insulating paint substrate, and methoxy groups can react with residual hydroxy of linseed oil modified epoxy resin under an acid catalysis condition, so that the compactness of a paint film is increased, and the mechanical properties of the paint film are improved as well. According to the preparation method, the problems that existing insulating paint is poor in thermal conductivity, and the ageing of the insulating paint is accelerated due to the heat accumulation in the working processes of motors and electric appliances are solved.

Description

technical field [0001] The invention belongs to the technical field of insulating varnish, and in particular relates to a high thermal conductivity insulating varnish and a preparation method thereof. Background technique [0002] Insulation is a safety measure that uses a non-conductive substance to isolate or wrap the charged body to protect against electric shock. Good insulation is the most basic and reliable means to ensure the safe operation of electrical equipment and circuits and prevent personal electric shock accidents. Insulating varnish is a kind of special varnish in the varnish category. It is based on high molecular polymer and can be solidified into an insulating film or an important insulating material for insulating the whole under certain conditions. [0003] Insulating varnish is widely used in daily production because cables and other products need to ensure certain insulation performance. Insulating paints are generally divided into solvent-based pain...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D4/06C09D4/02C09D5/25C09D7/61C09D7/62C09D7/63C09D7/65C08G59/42C08G59/50C08G59/68
CPCC08G59/4207C08G59/5086C08G59/686C09D4/06C09D5/00C09D5/18C09D7/61C09D7/62C09D7/63C09D7/65
Inventor 刘菊花路芸庞成荣
Owner FOSHAN CHAOHONG NEW MATERIAL TECH CO LTD
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