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Insulating and heat conduction material for power battery of new-energy vehicle and preparation method of insulating and heat conduction material

A new energy vehicle and power battery technology, applied in the field of composite materials, can solve the problems of poor material performance stability, unenvironmental use, safety hazards, etc., to achieve excellent mechanical properties, better thermal conductivity, and avoid oxidation effects.

Inactive Publication Date: 2019-06-21
杨记周
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The insulation and heat conduction materials for new energy vehicle power batteries prepared by this preparation method overcome the more or less poor insulation of traditional new energy vehicle power battery insulation and heat conduction materials, which will cause safety hazards and are expensive when used in electric vehicles , The material performance stability is not good, the use is not environmentally friendly, and it has the advantages of excellent comprehensive performance, rigidity, flame retardancy, high temperature resistance, insulation, weather resistance and thermal conductivity.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A method for preparing an insulating and heat-conducting material for a power battery of a new energy vehicle, comprising the following preparation method:

[0032] Preparation of the intermediate product in step S1: under a nitrogen atmosphere, add 100 g of tetrahydrophthalimide and 113 g of dienestrol into a three-necked flask equipped with a reflux condenser and an electric stirrer, and then add dimethyl ethylene Sulfone 1000g, reflux and stir reaction at 120°C for 10 hours, then spin evaporate to remove the solvent to obtain an intermediate product;

[0033] Step S2 Fluorine-containing fluorene polycondensate based on phthalimide: add 150 g of 2,7-dibromo-9,9-difluorofluorene, 100 g of intermediate product, and 40 g of cesium carbonate into a three-necked flask connected with a water separator , add 1000g of dimethyl sulfoxide and 400g of toluene, heat the reaction system to 110°C, stir and react for 3 hours under the protection of nitrogen, remove the water and tol...

Embodiment 2

[0039] A method for preparing an insulating and heat-conducting material for a power battery of a new energy vehicle, comprising the following preparation method:

[0040] Preparation of the intermediate product in step S1: under a helium atmosphere, add 100 g of tetrahydrophthalimide and 113 g of dienestrol into a three-necked flask equipped with a reflux condenser and an electric stirrer, and then add N, 1100 g of N-dimethylformamide was reacted under reflux and stirring at 122°C for 10.5 hours, and then the solvent was removed by rotary evaporation to obtain an intermediate product;

[0041] Step S2 Phthalimide-based fluorine-containing fluorene condensation polymer: Add 150 g of 2,7-dibromo-9,9-difluorofluorene, 100 g of intermediate product, and 43 g of sodium hydride into a three-necked flask connected with a water separator , add 1100g of dimethyl sulfoxide and 450g of toluene, heat the reaction system to 113°C, stir and react for 3.5 hours under the protection of nitro...

Embodiment 3

[0047] A method for preparing an insulating and heat-conducting material for a power battery of a new energy vehicle, comprising the following preparation method:

[0048] Preparation of the intermediate product in step S1: under a neon gas atmosphere, add 100 g of tetrahydrophthalimide and 113 g of dienestrol into a three-necked flask equipped with a reflux condenser and an electric stirrer, and then add N- Methylpyrrolidone 1300g, refluxed and stirred at 125°C for 11 hours, then rotary evaporated to remove the solvent to obtain an intermediate product;

[0049] Step S2 fluorine-containing fluorene polycondensate based on phthalimide: Add 150 g of 2,7-dibromo-9,9-difluorofluorene, 100 g of intermediate product, and 50 g of potassium tert-butyl alkoxide to the In the three-necked flask, add 1300g of dimethyl sulfoxide and 500g of toluene, heat the reaction system to 115°C, stir and react for 4 hours under the protection of nitrogen, remove the water and toluene generated durin...

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PUM

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Abstract

The invention provides a preparation method of an insulating and heat conduction material for a power battery of a new-energy vehicle. The method comprises steps as follows: (1) preparation of an intermediate product, (2) preparation of phthalimide-based fluorine-containing fluorene polycondensate, (3) preparation of a polymer surface modified fluoridized graphene / nano boron fiber composite, and (4) material forming. The invention also discloses the insulating and heat conduction material for the power battery of the new-energy vehicle, which is prepared with the preparation method. The insulating and heat conduction material for the power battery of the new-energy vehicle has the advantages of excellent comprehensive performance and better rigidity, flame retardance, high-temperature resistance, insulativity, weather fastness and heat conductivity.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to an insulating and heat-conducting material for a power battery of a new energy vehicle and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of our country's economy and the continuous improvement of people's living standards, people's understanding of the environmental pollution caused by automobile exhaust has been further deepened, and it is very urgent to improve the environment on which they live. It is in this form Under the circumstances, new energy vehicles came into being. New energy vehicles are a type of vehicles driven by new energy sources other than traditional energy sources, and electric vehicles are typical representatives of this type of vehicles. It is powered by electricity and is known for its zero emissions, low noise and high efficiency. [0003] Due to the nature and structure of electric ...

Claims

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Application Information

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IPC IPC(8): C08L65/00C08K9/04C08K3/04C08K7/06
Inventor 杨记周
Owner 杨记周
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