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A kind of flame-retardant nylon material used for battery pack casing and preparation method thereof

A flame retardant nylon and battery pack technology, applied in the field of polymer materials, can solve problems such as flame retardant performance to be improved, battery module fire, heat runaway, etc., and achieve the effect of enhancing anti-corrosion effect, increasing carbon layer density, and light weight.

Active Publication Date: 2022-04-08
宁波普立隆高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the related technologies mentioned above, the inventor believes that the lithium battery in the battery module continuously emits heat during use, which may easily lead to heat out of control, and even cause the battery module to catch fire, resulting in a safety accident. 4 times the advantages, but its flame retardant performance needs to be improved

Method used

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  • A kind of flame-retardant nylon material used for battery pack casing and preparation method thereof
  • A kind of flame-retardant nylon material used for battery pack casing and preparation method thereof
  • A kind of flame-retardant nylon material used for battery pack casing and preparation method thereof

Examples

Experimental program
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Effect test

preparation example 1-8

[0038] In Preparation Example 1-8, cerium dioxide was selected from Bohuas Nano Technology (Ningbo) Co., Ltd.; poly-4-methyl-1-pentene was selected from Dongguan Suyun Plastic Co., Ltd.; expandable graphite was selected from Hongyue, Gongyi City Refractory Co., Ltd., the model is HY-SM; maleic anhydride grafted polyethylene is selected from Shenzhen Haian Plastic Chemical Co., Ltd., the model is PE1040.

preparation example 1

[0039] Preparation Example 1: (1) Mix 1kg red phosphorus with 1.5kg water, grind at a speed of 300r / min for 3h, dry in vacuum at 80°C for 3h, mix with 2kg ammonia water, 3.5kg tetraethyl orthosilicate, 2kg ethanol, 3kg Cerium dioxide is mixed, stirred for 5 hours, centrifuged, and vacuum-dried at 60°C for 10 hours. The purity of ceria is greater than 99.99%, and the density is 7.13g / cm 3 , the specific surface area is 90.86m 2 / g; (2) 3kg poly-4-methyl-1-pentene and 10kg step (1) gain are mixed, extrude, granulate, make microcapsules and coat red phosphorus masterbatch, and the temperature of a district is 175 ℃, the temperature in the second zone is 215 ℃, the temperature in the third zone is 235 ℃, the temperature in the fourth zone is 240 ℃, and the temperature in the fifth zone is 245 ℃.

preparation example 2

[0040] Preparation Example 2: (1) Mix 1.3kg of red phosphorus with 1.8kg of water, grind at a speed of 300r / min for 3h, dry in vacuum at 80°C for 3h, mix with 2.5kg of ammonia water, 4.5kg of ethyl orthosilicate, 2.3kg of Mix ethanol and 3.5kg ceria, stir for 5.5h, centrifuge, and vacuum dry at 60°C for 10h. The purity of ceria is greater than 99.99%, and the density is 7.13g / cm 3 , the specific surface area is 90.86m 2 / g;

[0041] (2) 4kg poly-4-methyl-1-pentene and 15kg step (1) gain are mixed, extrude, granulate, make microcapsule coating red phosphorus masterbatch, the temperature of one district is 175 ℃, two The temperature in the zone is 215°C, the temperature in the third zone is 235°C, the temperature in the fourth zone is 240°C, and the temperature in the fifth zone is 245°C.

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Abstract

The application relates to the field of polymer materials, and specifically discloses a flame-retardant nylon material used for battery pack casings and a preparation method thereof. The flame-retardant nylon material used for the battery pack shell includes the following components by weight: 50-70 parts of nylon resin, 8-15 parts of red phosphorus masterbatch coated with microcapsules, 25-35 parts of chopped glass fiber, anhydrous boric acid 1-3 parts of zinc, 1-3 parts of zinc oxide, 2-5 parts of maleic anhydride grafted ethylene-octene copolymer, 1-3 parts of aniline black masterbatch, 1-3 parts of hydrotalcite, and 0.1-1 parts of antioxidant part, 0.1-1 part of lubricant; its preparation method is: S1, weighing raw materials; S2, mixing; S3, extruding. The flame-retardant nylon material used for the battery pack casing of the present application has excellent flame retardancy, toughness and strength, light weight and good corrosion resistance.

Description

technical field [0001] This application relates to the technical field of polymer materials, and more specifically, it relates to a flame-retardant nylon material used for battery pack casings and a preparation method thereof. Background technique [0002] As a new generation of transportation developed by the automobile industry, new energy vehicles have great advantages in energy saving and emission reduction, and reducing dependence on traditional petroleum resources. The battery pack is the core energy source of new energy vehicles and is the battery module in new energy vehicles. The carrier body is generally installed at the bottom of the car body, and is mainly used to protect the lithium battery from being easily damaged when it is impacted or squeezed by the outside world, and plays a key role in the safety protection of the battery module. [0003] Traditional car battery pack shells are cast with steel plates, aluminum alloys and other materials, and then sprayed ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/06C08L51/06C08L27/18C08K13/06C08K9/10C08K3/02C08K3/38C08K7/14C08K3/22C08K3/26
CPCC08L77/06C08K2003/026C08K2003/387C08K2003/2296C08L2201/02C08L2203/20C08L51/06C08L27/18C08K13/06C08K9/10C08K3/02C08K3/38C08K7/14C08K3/22C08K3/26C08K3/2279
Inventor 杨万银秦占伟李延辉张电丰
Owner 宁波普立隆高分子材料有限公司
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