High-partial-discharge insulating material for oil-cooled motor of new energy automobile and preparation method of high-partial-discharge insulating material

A technology for new energy vehicles and insulating materials, applied in the direction of inorganic insulators, organic insulators, insulators, etc., can solve the problems of high partial discharge performance, poor insulation performance, poor safety, etc., achieve high partial discharge performance and improve partial discharge performance , the effect of high insulation performance

Active Publication Date: 2022-07-29
SUI ON LAMINATION MATERIALS SHENZHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, pure polyaramid fiber paper, polyimide film polyaramid fiber paper soft composite material (NHN), polyethylene naphthalate polyaramid fiber are generally used for slot insulation of new energy vehicle motors. Paper soft composite material (NPN), polyphenylene sulfide polyaramid fiber paper soft composite material (NSN), these materials cannot maintain high partial discharge performance, thermal cracking and hydrolysis resistance while maintaining high insulation performance , less secure

Method used

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  • High-partial-discharge insulating material for oil-cooled motor of new energy automobile and preparation method of high-partial-discharge insulating material
  • High-partial-discharge insulating material for oil-cooled motor of new energy automobile and preparation method of high-partial-discharge insulating material
  • High-partial-discharge insulating material for oil-cooled motor of new energy automobile and preparation method of high-partial-discharge insulating material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (a) 4-hydroxybutyl acrylate is dissolved in acetone to form a solution of 50% by mass;

[0041] (b) dissolving polyol trimethylolpropane (TMP) with acetone to form a solution of 40% by mass;

[0042] (c) using ethyl acetate solvent to dissolve toluene diisocyanate to form a solution of 70% mass ratio;

[0043] (d) stirring the gained 4-hydroxybutyl acrylate solution, polyol solution and toluene diisocyanate solution according to the mass ratio of 10:1:2 to obtain acrylic modified adhesive glue;

[0044] (e) High density at 0.18mm (0.96g / cm 3 ) The surface of the aramid fiber paper is all coated with the glue solution of the obtained acrylic modified adhesive, and the coating amount is 20g / m 2 ;

[0045] (f) drying the high-density aramid fiber paper substrate with the adhesive glue through a drying tunnel to remove the solvent in the modified adhesive glue to obtain a high-density aramid fiber with the acrylic modified adhesive fiber paper;

[0046] (g) laminating ...

Embodiment 2

[0051] (a) 4-hydroxybutyl acrylate is dissolved in ethyl acetate to form a solution of 50% by mass;

[0052] (b) dissolving polyol trimethylolpropane (TMP) with ethyl acetate to form a solution of 50% by mass;

[0053] (c) using methyl acetate solvent to dissolve biuret polyisocyanate to form a solution of 75% mass ratio;

[0054] (d) stirring the obtained 4-hydroxybutyl acrylate solution, polyol solution and biuret polyisocyanate solution uniformly according to the mass ratio of 20:4:5 to obtain acrylic modified adhesive glue;

[0055] (e) High density at 0.13mm (0.96g / cm 3 ) The surface of the aramid fiber paper is all coated with the glue solution of the obtained acrylic modified adhesive, and the coating amount is 18g / m 2 ;

[0056] (f) drying the high-density aramid fiber paper substrate with the adhesive glue through a drying tunnel to remove the solvent in the modified adhesive glue to obtain a high-density aramid fiber with the acrylic modified adhesive fiber paper...

Embodiment 3

[0062] (a) 4-hydroxybenzoyl acrylate is dissolved in ethyl acetate to form a solution of 35% by mass;

[0063] (b) dissolving polyol dipropylene glycol (IPG) using ethyl acetate to form a solution of 40% by mass;

[0064] (c) using acetone to dissolve polymethylene polyphenylene isocyanate to form a solution of 60% by mass;

[0065] (d) stirring the gained 4-hydroxybenzoyl acrylic acid solution, polyol solution and biuret polyisocyanate solution according to the mass ratio of 15:2:4 to obtain acrylic modified adhesive glue;

[0066] (e) High density at 0.18mm (1.02g / cm 3 ) The surface of the aramid fiber paper is all coated with the glue solution of the obtained acrylic modified adhesive, and the coating amount is 22g / m 2 ;

[0067] (f) drying the high-density aramid fiber paper substrate with the adhesive glue through a drying tunnel to remove the solvent in the modified adhesive glue to obtain a high-density aramid fiber with the acrylic modified adhesive fiber paper;

...

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Abstract

The invention belongs to the technical field of insulating materials, and discloses a high-partial-discharge insulating material for an oil-cooled motor of a new energy automobile and a preparation method of the high-partial-discharge insulating material. The high-partial-discharge insulating material for the oil-cooled motor of the new energy automobile comprises a high-density aramid fiber layer, a first adhesive layer, a mica aramid fiber layer, a second adhesive layer and a low-density aramid fiber layer which are sequentially arranged from top to bottom, wherein the first adhesive layer and the second adhesive layer are both acrylic acid modified polyurethane glue. According to the high-partial-discharge insulating material for the oil-cooled motor of the new energy automobile, the partial discharge performance, thermal cracking performance and hydrolysis resistance of the high-partial-discharge insulating material are improved while the high insulating performance of the high-partial-discharge insulating material is maintained, so that the safety of the oil-cooled motor is improved, and the service life of the oil-cooled motor is prolonged.

Description

technical field [0001] The invention relates to the technical field of insulating materials, in particular to a high partial discharge insulating material for oil-cooled motors of new energy vehicles and a preparation method thereof. Background technique [0002] The design of the oil-cooled motor for new energy vehicles is to integrate the motor with the gearbox, and use the gearbox oil to cool the motor or generator in the structure, saving space and improving cooling efficiency. Oil-cooled designs bring new challenges to insulation systems. Since the insulation material of the motor will be in contact with ATF oil (chemical medium) for a long time under high and low temperature conditions, the insulation evaluation of oil-cooled motors needs to consider not only traditional thermal, electrical, environmental factors, etc., but also materials, systems and variable speed. Tank oil compatibility. If there is a compatibility problem between the insulating material and the A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/30D21H13/26B32B7/12B32B29/00B32B37/12H01B3/04H01B3/30H01B3/48H01B17/60H01B19/00H01B19/02
CPCD21H27/30D21H13/26B32B29/00B32B29/005B32B7/12B32B37/1284H01B17/60H01B19/02H01B19/00H01B3/04H01B3/485H01B3/305B32B2307/20B32B2307/206B32B2605/08Y02T10/64
Inventor 陈明义郭传鸿陈刚
Owner SUI ON LAMINATION MATERIALS SHENZHEN
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