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High-thermal-conductivity insulating cooling fin for new energy battery and preparation method of high-thermal-conductivity insulating cooling fin

A thermal insulation layer, high thermal conductivity technology, applied in the coating and other directions, can solve the problems of leakage, slow water heat dissipation, trouble, etc., to achieve the effect of good heat dissipation, improve heat dissipation, and reduce the possibility of leakage

Active Publication Date: 2022-04-12
DONGGUAN HONGYI THERMAL CONDUCTMTY MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003]At present, the heat dissipation of new energy batteries is mainly through water, but water heat dissipation is slow and troublesome. Therefore, it has been proposed to use graphene film for new energy batteries heat dissipation
Graphene heat dissipation film has good heat dissipation performance, but it also has good electrical conductivity, so that current can pass through the graphene film. When the graphene film is used in new energy batteries, it may cause leakage. Therefore, it is necessary to use graphene Membrane for improvement

Method used

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  • High-thermal-conductivity insulating cooling fin for new energy battery and preparation method of high-thermal-conductivity insulating cooling fin
  • High-thermal-conductivity insulating cooling fin for new energy battery and preparation method of high-thermal-conductivity insulating cooling fin
  • High-thermal-conductivity insulating cooling fin for new energy battery and preparation method of high-thermal-conductivity insulating cooling fin

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0052] A kind of insulating heat-conducting agent, is made by following steps:

[0053] Step 1: Weigh 1Kg of mica, 0.6Kg of silicon powder, 0.4Kg of kaolin and 65Kg of xylene, put them into an ultrasonic wave and vibrate for 8 minutes to obtain a mixture A;

[0054] Step 2: Weigh 37Kg of methylphenyldimethoxysilane and 1.3Kg of tetramethyldivinyldisiloxane, mix well, add the mixture A obtained in step 1 into the reaction kettle, and stir well , heated to 55°C to obtain mixture B;

[0055] Step 3: Weigh 4Kg mass fraction of 2% sodium hydroxide solution, add it dropwise to the mixture B obtained in step 2, stir evenly, heat to 75°C, hydrolyze for 2.5h, heat up to 85°C, and distill at atmospheric pressure , reacted for 5 hours, raised the temperature to 100°C, and then distilled under reduced pressure for 0.8 hours to remove the solvent and small molecule products, and then added absolute ethanol for washing to obtain an insulating and heat-conducting agent.

preparation example 2

[0057] A kind of insulating heat-conducting agent, is made by following steps:

[0058] Step 1: Weigh 0.5Kg of mica, 0.3Kg of silicon powder, 0.2Kg of kaolin and 50Kg of xylene, put them into an ultrasonic wave and vibrate for 8 minutes to obtain a mixture A;

[0059] Step 2: Weigh 35Kg of methylphenyldimethoxysilane and 1.1Kg of tetramethyldivinyldisiloxane, mix well, add the mixture A obtained in step 1 into the reaction kettle, and stir well , heating up to 50°C to obtain mixture B;

[0060] Step 3: Weigh 3Kg of 1.5% sodium hydroxide solution, add it dropwise to the mixture B obtained in step 2, stir evenly, heat to 70°C, perform hydrolysis reaction for 2h, heat up to 80°C, and distill at normal pressure, After reacting for 4 hours, the temperature was raised to 90° C., and then vacuum distillation was carried out for 0.5 hours to remove the solvent and small molecule products, and then anhydrous ethanol was added for washing to obtain an insulating heat-conducting agent. ...

preparation example 3

[0062] A kind of insulating heat-conducting agent, is made by following steps:

[0063] Step 1: Weigh 1.5Kg of mica, 0.9Kg of silicon powder, 0.6Kg of kaolin and 50Kg of xylene, put them into an ultrasonic wave and vibrate for 10 minutes to obtain a mixture A;

[0064] Step 2: Weigh 39Kg of methylphenyldimethoxysilane and 1.4Kg of tetramethyldivinyldisiloxane, mix well, add the mixture A obtained in step 1 into the reaction kettle, and stir well , heated to 60°C to obtain mixture B;

[0065] Step 3: Weigh 5Kg of 2.0% sodium hydroxide solution, add it dropwise to the mixture B obtained in step 2, stir evenly, heat to 78°C, perform hydrolysis reaction for 3h, heat up to 95°C, and distill at normal pressure, After reacting for 6 hours, the temperature was raised to 110° C., and then vacuum distillation was carried out for 0.5 hours to remove the solvent and small molecule products, and then anhydrous ethanol was added for washing to obtain an insulating heat-conducting agent.

...

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Abstract

The invention relates to a high-thermal-conductivity insulating cooling fin for a new energy battery and a preparation method thereof.The high-thermal-conductivity insulating cooling fin comprises a heat conduction layer and a heat conduction insulating layer connected with the heat conduction layer, the heat conduction layer is a graphene heat conduction cooling film, the heat conduction insulating layer is formed by coating an insulating heat conduction coating, and the graphene heat conduction cooling film is prepared from, by weight, 4, 4, 5, 6-tetramethyl-3, 5-pentanediol monoisobutyrate, the graphene composite material is prepared from the following components in parts by weight: 35 to 45 parts of 4, 4 '-oxydiphthalic anhydride, 32 to 43 parts of 4, 4'-diaminodiphenyl ether, 120 to 130 parts of N-methyl-2-pyrrolidone, 5 to 8 parts of hexagonal boron nitride, 20 to 30 parts of graphene and 1 to 2 parts of coupling agent. The insulating heat-conducting coating is prepared from the following raw materials in parts by weight: 20-30 parts of an insulating heat-conducting agent, 1-1.5 parts of an ethylene-ethyl acrylate copolymer and 30-40 parts of a diluent; the insulating heat-conducting agent is prepared from methyl phenyl silicone oil and insulating heat-conducting filler. The cooling fin has the advantages of being good in insulation performance and heat dissipation effect.

Description

technical field [0001] This application relates to the technical field of thermally conductive materials, more specifically, it relates to a high thermally conductive insulating heat sink for new energy batteries and a preparation method thereof. Background technique [0002] Heat dissipation film is a layer of heat conduction and heat dissipation film used on mobile phones, tablet computers, etc. At present, the heat dissipation materials used in the market are natural graphite heat dissipation film, artificial graphite heat dissipation film, graphene heat dissipation film and nano-carbon heat dissipation film. membrane. [0003] At present, the heat dissipation for new energy batteries is mainly through water, but water heat dissipation is slow and troublesome. Therefore, it has been proposed to use graphene film to dissipate heat for new energy batteries. Graphene heat dissipation film has good heat dissipation performance, but it also has good electrical conductivity, s...

Claims

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Application Information

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IPC IPC(8): C08J7/04C08L79/08C08K3/38C08K3/04C08G73/10C09D5/25C09D183/07C09D7/61C09D7/65
CPCY02E60/10
Inventor 郑志成朱全红周招团
Owner DONGGUAN HONGYI THERMAL CONDUCTMTY MATERIAL CO LTD
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