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ATF oil resistant flame retardant type impregnated resin as well as preparation method and application thereof

A resin-impregnated, flame-retardant technology, applied in the field of insulating materials, can solve the problems that cannot meet the development needs of oil-cooled electric vehicle motors, reduce the heat resistance and mechanical strength of the impregnated resin, poor ATF oil resistance, etc., and achieve easy promotion Application, human health friendliness, good storage stability

Active Publication Date: 2017-04-26
SUZHOU JUFENG ELECTRICAL INSULATION SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing impregnating resins have poor ATF oil resistance and do not have flame retardant properties, which cannot meet the development needs of oil-cooled electric vehicle motors
In order to improve the flame retardant properties of the resin, epoxy resin containing halogen is usually added to improve the flame retardant performance, but it will emit halide gas when burning, which has a great negative impact on the atmosphere and human body
In addition, halogen-free externally added flame retardants are basically thermoplastic. Adding them to the impregnating resin formula will significantly reduce the heat resistance and mechanical strength of the impregnating resin, and the use is also limited.

Method used

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  • ATF oil resistant flame retardant type impregnated resin as well as preparation method and application thereof
  • ATF oil resistant flame retardant type impregnated resin as well as preparation method and application thereof
  • ATF oil resistant flame retardant type impregnated resin as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] This embodiment provides an ATF oil-resistant flame-retardant impregnating resin, which is prepared by the following steps:

[0042] (1) Add 500g of Dow431 epoxy resin, 36g of acrylic acid, 0.13g of chromium acetylacetonate, and 0.56g of hydroquinone into the reaction flask, heat to 135°C for 1.5h; cool down to 110-120°C, add 20g of cis Butenedioic anhydride was reacted at 140°C for 1 hour, vacuumed, the acid value was 6 mgKOH / g, and the temperature was lowered to obtain a modified epoxy resin.

[0043] (2) Add 880g of diphenyldihydroxysilane, 918g of γ-methacryloxypropyltrimethoxysilane and 1.7g of stannous chloride into the reaction flask, heat to 148°C, react for 4 hours, and then vacuumize , cooling to obtain silicone resin.

[0044] (3) Add 60g of benzoxazine resin to the reaction bottle, set up a reflux device, heat to 190°C in an oil bath, and after the benzoxazine resin is melted, add 23g of toluene, stir evenly to form benzoxazine Oxazine toluene solution. W...

Embodiment 2

[0047] This embodiment provides an ATF oil-resistant flame-retardant impregnating resin, which is prepared by the following steps:

[0048] (1) Add 800.9g F51 epoxy resin, 43.5g acrylic acid, 0.26g chromium acetylacetonate, and 0.86g hydroquinone into the reaction flask, heat to 140°C for 2 hours; cool down to 115°C, add 14.8g cis Butenedioic anhydride was heated to 145°C and reacted for 1 hour, vacuumed, the acid value was 7.5mgKOH / g, and the temperature was lowered to obtain a modified epoxy resin.

[0049] (2) Add 500g of diphenyldihydroxysilane, 430g of vinyltriethoxysilane and 0.95g of stannous chloride into the reaction flask, heat to 150°C, react for 5 hours, vacuumize, and cool down to obtain silicone resin .

[0050](3) Add 85g of benzoxazine resin to the reaction bottle, set up a reflux device, heat to 185°C in an oil bath, and after the benzoxazine resin is melted, add 30g of toluene, stir evenly to form benzoxazine Oxazine toluene solution. When the temperature ...

Embodiment 3

[0053] This embodiment provides an ATF oil-resistant flame-retardant impregnating resin, which is prepared by the following steps:

[0054] (1) Add 835g Dow431 epoxy resin, 65.3g acrylic acid, 0.28g chromium acetylacetonate, and 0.92g hydroquinone to the reaction flask, heat to 146°C and react for 1.5h; cool down to 120°C, add 25g cis-butyl Alkenic acid anhydride was heated to 145°C for 1 hour, vacuumed, the acid value was 7 mgKOH / g, and the temperature was lowered to obtain a modified epoxy resin.

[0055] (2) Add 650g of diphenyldihydroxysilane, 445g of vinyltrimethoxysilane and 1.1g of stannous chloride into the reaction flask, heat to 145°C, react for 3 hours, vacuumize, and cool down to obtain silicone resin .

[0056] (3) Add 105g of benzoxazine resin to the reaction bottle, set up a reflux device, heat it to 185°C in an oil bath, and after the benzoxazine resin is melted, add 40g of toluene, stir evenly to form benzoxazine Oxazine toluene solution. When the temperatu...

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PUM

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Abstract

The invention relates to ATF oil resistant flame retardant type impregnated resin as well as a preparation method and application thereof. The ATF oil resistant flame retardant type impregnated resin is prepared from the following raw materials in percentage by weight: 25-45 percent of modified epoxy resin, 15-37 percent of organic silicon resin, 5-15 percent of benzoxazine resin, 30-52 percent of a crosslinking monomer, 1-10 percent of a curing agent, 0.05-1.5 percent of a drying catalyst, 0.5-2 percent of an initiator and 0.02-0.1 percent of an polymerization inhibitor; the modified epoxy resin is prepared by enabling novolac epoxy resin to carry out esterification with acrylic acid and maleic anhydride sequentially; and the organic silicon resin is prepared by carrying out reaction on diphenylsilanediol and a double bond containing silane coupling agent. The impregnated resin has the characteristics of excellent transmission oil resistance, flame retardancy, heat resistance, high bonding strength and the like and is suitable for insulation impregnating treatment of an oil cooling type electric vehicle drive motor.

Description

technical field [0001] The invention belongs to the field of insulating materials, in particular to a gearbox oil-resistant, flame-retardant impregnating resin and a preparation method thereof, in particular to a gearbox oil-resistant, flame-retardant, high bonding strength, and high heat-resistant impregnating resin , mainly used in the insulation impregnation treatment of oil-cooled electric vehicle drive motors. Background technique [0002] Electric vehicles are energy-saving and environmentally friendly, and will gradually replace fuel-powered vehicles. The cooling methods of electric vehicle motors are divided into two types: air cooling and liquid cooling. The liquid cooling medium includes water and transmission oil (ATF oil). The insulating material used in oil-cooled motors will be in contact with ATF oil, so it must have excellent ATF oil resistance to ensure the reliability of the long-term operation of the motor. In addition, the electric vehicle safety regula...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/10C08L83/07C08L79/04C08F291/12C08F212/08C08F212/12C08F222/14C08G59/17C08G59/14C08J5/24
CPCC08F283/00C08F283/105C08F283/124C08G59/1438C08G59/1466C08J5/24C08J2363/10C08J2483/04C08L63/10C08L2201/02C08L2201/08C08L2201/22C08L2203/20C08L2205/03C08L83/06C08L79/04C08F222/102
Inventor 徐伟红夏宇温雪平周成汝国兴陶纯初
Owner SUZHOU JUFENG ELECTRICAL INSULATION SYST
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