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A high flame-retardant composite material for new energy vehicles and its preparation method

A technology for new energy vehicles and composite materials, which is applied in the field of high flame-retardant composite materials for new energy vehicles and its preparation. Stability of material properties and small effect on environment

Active Publication Date: 2021-02-05
苏州普科环境技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high flame-retardant composite material for new energy vehicles prepared by this preparation method overcomes the more or less poor UV resistance, easy to be damaged by high-energy radiation, poor cold resistance, and poor weather resistance of traditional polypropylene materials. , the defect of insufficient high temperature rigidity, has the advantages of high flame retardancy, weather resistance, mechanical properties and high and low temperature resistance, lower price, less impact on the environment, and safer and more environmentally friendly use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A method for preparing a high flame-retardant composite material for new energy vehicles, comprising the steps of:

[0031] Ⅰ Preparation of matrix material: Add 10g of bisphenol A bischloroformate and 3g of 4-dimethylaminopyridine into a reaction kettle containing 30g of dimethyl sulfoxide, and add dissolved bis(2-aminopyridine) while stirring. Ethyl) hydrogen phosphate 19.2g dichloromethane 60g, stirred and reacted at 30°C for 24 hours, then precipitated in acetone, and the precipitated polymer was washed 3 times with acetone, and then placed in a vacuum oven at 80°C Dry for 18 hours to obtain the base material;

[0032] Ⅱ Surface modification of glass fiber: disperse 30g of glass fiber in 100g of N-methylpyrrolidone to form a dispersion, then add 12g of vinyltriethoxysilane, 2,4-diamino-6-vinyl to the dispersion -S-triazine 5g, azobisisobutyronitrile 0.3g, stirred and reacted at 65°C under nitrogen atmosphere for 4 hours, then precipitated in water, washed the preci...

Embodiment 2

[0036] A method for preparing a high flame-retardant composite material for new energy vehicles, comprising the steps of:

[0037] Ⅰ Preparation of matrix material: Add 10g of bisphenol A bischloroformate and 3g of anhydrous pyridine into a reaction kettle containing 35g of N,N-dimethylformamide, and add di(2 -Aminoethyl) hydrogen phosphate 19.2g of 1,2-dichloroethane 70g, stirred and reacted at 35°C for 26 hours, then precipitated in acetone, and the precipitated polymer was washed 4 times with acetone, and then placed Dry in a vacuum oven at 83°C for 20 hours to obtain a matrix material;

[0038]Ⅱ Surface modification of glass fiber: disperse 35g of glass fiber in 115g of N-methylpyrrolidone to form a dispersion liquid, then add 12g of vinyltriethoxysilane, 2,4-diamino-6-vinyl -S-triazine 5g, azobisisoheptanonitrile 0.35g, stirred and reacted at 68°C for 4.5 hours under a helium atmosphere, then precipitated in water, washed the precipitated product with ethanol 4 times, an...

Embodiment 3

[0042] A method for preparing a high flame-retardant composite material for new energy vehicles, comprising the steps of:

[0043] Ⅰ Preparation of matrix material: Add 10g of bisphenol A bischloroformate and 3g of triethylamine into a reaction kettle containing 40g of N-methylpyrrolidone, and add dissolved bis(2-aminoethyl) while stirring. ) Hydrogen phosphate 19.2g THF 75g, stirred and reacted at 41°C for 28 hours, then precipitated in acetone, and washed the precipitated polymer with acetone 5 times, and then dried in a vacuum oven at 86°C for 21 hours, Get the base material;

[0044] Ⅱ Surface modification of glass fiber: disperse 40g of glass fiber in 135g of N-methylpyrrolidone to form a dispersion liquid, then add 12g of vinyltriethoxysilane, 2,4-diamino-6-vinyl -S-triazine 5g, azobisisobutyronitrile 0.4g, stirred and reacted at 70°C for 5 hours under a neon atmosphere, then precipitated in water, washed the precipitated product with ethanol 5 times, and placed in a va...

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PUM

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Abstract

The invention provides a method for preparing a high flame-retardant composite material for new energy vehicles, comprising the following steps: (1) preparation of a matrix material; (2) surface modification of glass fibers; and (3) preparation of a composite material. The invention also discloses the high flame retardant composite material for new energy vehicles prepared according to the preparation method of the high flame retardant composite material for new energy vehicles. The preparation method of the highly flame-retardant composite material for new energy vehicles disclosed by the invention is simple and easy, has low dependence on equipment, is not harsh on reaction conditions, and has easy-to-obtain raw materials and low price, and is suitable for industrialized production. The high flame retardant composite material for new energy vehicles prepared by this preparation method has high flame retardancy, weather resistance, excellent mechanical properties and high and low temperature resistance, lower price, less impact on the environment, and safer and more environmentally friendly use The advantages.

Description

technical field [0001] The invention relates to the technical field of new energy vehicles, in particular to a high flame-retardant composite material for new energy vehicles and a preparation method thereof. Background technique [0002] In order to solve the increasingly serious energy and environmental problems, more and more countries around the world pay attention to energy conservation and emission reduction. For the environmental pollution caused by automobiles, the best solution at present is to vigorously develop new energy vehicles, especially electric vehicles. With the extensive development of new energy vehicles, plastic casings such as battery components have put forward new requirements for materials, not only requiring them to have extremely high mechanical properties, but also requiring them to have good flame retardancy and processing fluidity. [0003] In the prior art, polypropylene is the most widely used material for battery parts of new energy vehicles...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L85/02C08L51/06C08L55/02C08K9/06C08K7/14
CPCC08L85/02C08L2201/02C08L51/06C08L55/02C08K9/06C08K7/14
Inventor 不公告发明人
Owner 苏州普科环境技术有限公司