Flame-retardant polypropylene material for cover of new energy vehicle battery pack and preparation method of flame-retardant polypropylene material

A flame retardant polypropylene and new energy vehicle technology, which is applied in the field of flame retardant polypropylene material for the upper cover of the battery pack of the new energy vehicle and its preparation field, can solve the problem that the mechanical properties and flame retardant properties of the upper cover of the battery pack of the new energy vehicle cannot be satisfied. and lightweight problems, to achieve the effect of improving mechanical properties and reducing product density

Inactive Publication Date: 2019-08-02
长沙而道新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a flame-retardant polypropylene material for the upper cover of the new energy vehicle battery pack and its preparation method, so as to solve th

Method used

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  • Flame-retardant polypropylene material for cover of new energy vehicle battery pack and preparation method of flame-retardant polypropylene material
  • Flame-retardant polypropylene material for cover of new energy vehicle battery pack and preparation method of flame-retardant polypropylene material

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Embodiment 1

[0035] A method for preparing a flame-retardant polypropylene material for the upper cover of a new energy vehicle battery pack, the specific steps are as follows:

[0036] (1) First, carbon fiber powder, wollastonite powder, hollow glass microspheres, hexamethylenetetramine and coupling agent are mixed and ground to obtain the first additive and set aside;

[0037] (2) Then add polyvinyl alcohol, aluminum dihydrogen phosphate, sodium polyphosphate and polyhexamethyleneguanidine hydrochloride to the aqueous solution of sodium carboxymethyl cellulose, stir to dissolve, then add oxidized modified graphite, and ultrasonically oscillate After 30 minutes, the suspension was obtained, dried, and then kneaded by a torque rheometer to obtain the second additive for subsequent use;

[0038] (3) Finally, the polypropylene, the first additive obtained in step (1), and the second additive obtained in step (2) are melted and mixed with a twin-screw extruder, injected with a foaming agent, ...

Embodiment 2

[0052] A method for preparing a flame-retardant polypropylene material for the upper cover of a new energy vehicle battery pack, the specific steps are as follows:

[0053] (1) First, carbon fiber powder, wollastonite powder, hollow glass microspheres, hexamethylenetetramine and coupling agent are mixed and ground to obtain the first additive and set aside;

[0054] (2) Then add polyvinyl alcohol, aluminum dihydrogen phosphate, sodium polyphosphate and polyhexamethyleneguanidine hydrochloride to the aqueous solution of sodium carboxymethyl cellulose, stir to dissolve, then add oxidized modified graphite, and ultrasonically oscillate After 40 minutes, the suspension was obtained, dried, and kneaded by a torque rheometer to obtain the second additive for subsequent use;

[0055] (3) Finally, the polypropylene, the first additive obtained in step (1), and the second additive obtained in step (2) are melted and mixed with a twin-screw extruder, injected with a foaming agent, and p...

Embodiment 3

[0069] A method for preparing a flame-retardant polypropylene material for the upper cover of a new energy vehicle battery pack, the specific steps are as follows:

[0070] (1) First, carbon fiber powder, wollastonite powder, hollow glass microspheres, hexamethylenetetramine and coupling agent are mixed and ground to obtain the first additive and set aside;

[0071] (2) Then add polyvinyl alcohol, aluminum dihydrogen phosphate, sodium polyphosphate and polyhexamethyleneguanidine hydrochloride to the aqueous solution of sodium carboxymethyl cellulose, stir to dissolve, then add oxidized modified graphite, and ultrasonically oscillate After 30 minutes, the suspension was obtained, dried, and then kneaded by a torque rheometer to obtain the second additive for subsequent use;

[0072] (3) Finally, the polypropylene, the first additive obtained in step (1), and the second additive obtained in step (2) are melted and mixed with a twin-screw extruder, injected with a foaming agent, ...

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Abstract

The invention provides a flame-retardant polypropylene material for a cover of a new energy vehicle battery pack and a preparation method of the flame-retardant polypropylene material. The flame-retardant polypropylene material is obtained by melt-mixing polypropylene with a first additive and a second additive; the introduction of the foaming process enables the product density to be greatly reduced, thereby meeting the lightweight requirements on the cover of the new energy vehicle battery pack. The first additive is prepared from carbon fiber powder, wollastonite powder, hollow glass microbeads, hexamethylenetetramine and other raw materials, and the second additive is prepared from a sodium carboxymethyl cellulose aqueous solution, polyvinyl alcohol, aluminium dihydrogen phosphate, sodium polyphosphate, polyhexamethylene guanide hydrochloride, oxidized modified graphite and other raw materials; the introduction of the above components effectively improves the mechanical propertiesand flame retardant properties of the product, so that the product can satisfy the high standard requirements on the cover of the new energy vehicle battery pack.

Description

technical field [0001] The invention relates to the technical field of new energy vehicles, in particular to a flame-retardant polypropylene material for the upper cover of a battery pack of a new energy vehicle and a preparation method thereof. Background technique [0002] New energy vehicles refer to vehicles that use unconventional vehicle fuels as power sources, integrate advanced technologies in vehicle power control and drive, and form vehicles with advanced technical principles, new technologies, and new structures. At present, with the enhancement of people's awareness of environmental protection, the market share of new energy vehicles continues to grow, and with it, the material market's demand for materials around new energy vehicles is also gradually increasing. [0003] Compared with traditional fuel vehicles, the battery part of new energy vehicles is special, and the safety requirements for this part are extremely high when the battery pack is designed, both ...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/14C08L1/28C08L79/00C08L29/04C08K13/06C08K3/04C08K3/34C08K7/28C08K7/06C08K3/32C08J9/10C08J9/14
CPCC08J9/0061C08J9/0066C08J9/0085C08J9/009C08J9/0095C08J9/102C08J9/105C08J9/141C08J9/145C08J2203/04C08J2203/14C08J2203/142C08J2323/12C08J2323/14C08J2401/28C08J2429/04C08J2479/00
Inventor 不公告发明人
Owner 长沙而道新能源科技有限公司
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