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Material for new energy battery cases and preparation method of material

A battery casing and new energy technology, which is applied in the field of special materials for new energy battery casings and its preparation, can solve problems such as poor heat resistance and heat transfer performance, poor low-temperature toughness and thermal conductivity, and long-term use performance effects, etc., to prolong the service life , excellent mechanical properties, and the effect of improving the safety of use

Inactive Publication Date: 2015-05-13
SHANGHAI SUNNY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For example, Chinese patent CN200810059699.3 discloses a special flame-retardant ABS material for lead-acid battery shells. High impact strength, bright appearance, no precipitation, but the material has poor heat resistance and heat transfer performance
Another example is the Chinese patent CN102453280A, which discloses a flame-retardant material for a power battery shell based on a polypropylene material and a preparation method thereof. The material includes: a polypropylene substrate, 2%-8% flame retardant and 8%-35% % of glass fiber, the material has excellent heat resistance and flame retardancy, but the low temperature toughness and thermal conductivity of the material are poor, which has a great impact on the long-term performance of the material
[0004] To sum up, there is an urgent need for a material with excellent mechanical properties, easy processing and molding, suitable for the preparation of new energy battery casings, and excellent heat conduction and heat dissipation capabilities, but there are no reports on such materials so far.

Method used

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  • Material for new energy battery cases and preparation method of material
  • Material for new energy battery cases and preparation method of material
  • Material for new energy battery cases and preparation method of material

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Experimental program
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Embodiment 1

[0032] Embodiment 1 Preparation of material of the present invention (1)

[0033] (1) Take raw materials by weight percentage content: PA66 (viscosity 2.50): 44%, glass fiber 10%, aluminum oxide (50 μ m in particle size) 25%, coated red phosphorus 10%, flow modifier SiO 0.4%, Silane coupling agent 0.2%, compatibilizer POE-MAH 5%, antioxidant 168 / 1098 0.4%, silicone powder 0.5%, green powder 3%, black masterbatch 1.5%;

[0034] (2) Bake the PA66 at 100°C for 8 hours;

[0035] (3) Carry out pretreatment to powdery filler, join above-mentioned aluminum oxide, coated red phosphorus, green powder in the high-speed mixer, then add silane coupling agent, mix evenly, set aside;

[0036] (4) Add the above-mentioned uniformly mixed powder filler together with PA66, glass fiber, flow modifier, compatibilizer, antioxidant, silicone powder and black masterbatch into a high-speed mixer and mix evenly, and then add it to the double In the main feeding barrel of the screw extruder;

[0037...

Embodiment 2

[0038] Embodiment 2 Preparation of material of the present invention (two)

[0039] (1) Weigh raw materials by weight percentage: PA66 (viscosity 3.40): 39.5%, glass fiber 20%, silicon carbide (particle size 5 μm) 5%, boron nitride (particle size 50 μm) 15%, coated red phosphorus 8%, flow modifier SiO 0.3%, silane coupling agent 1%, compatibilizer EPDM-MAH 10%, antioxidant 168 / 1098 0.5%, silicone powder 0.2%, black masterbatch 0.5%;

[0040] (2) Bake the PA66 at 90°C for 10 hours;

[0041] (3) Pretreat the powdery filler, add the above-mentioned silicon carbide, boron nitride, and coated red phosphorus into a high-speed mixer, then add a silane coupling agent, mix evenly, and set aside;

[0042] (4) Add the above-mentioned uniformly mixed powder filler together with PA66, glass fiber, flow modifier, compatibilizer, antioxidant, silicone powder and black masterbatch into a high-speed mixer and mix evenly, and then add it to the double In the main feeding barrel of the screw e...

Embodiment 3

[0044] Embodiment 3 Preparation of material of the present invention (three)

[0045] (1) Weigh raw materials by weight percentage: PA66 (viscosity 2.10): 60%, glass fiber 10%, magnesium oxide (particle size 50 μm) 15%, coated red phosphorus 8%, flow modifier long-chain multifunctional group Ester 0.8%, isopropyl tris(dioctyl pyrophosphate acyloxy) titanate 0.1%, compatibilizer EVA-MAH 3%, antioxidant 168 / 1098 0.2%, EBS 0.4%, green powder 2% , black masterbatch 0.5%;

[0046] (2) Bake the PA66 at 110°C for 5 hours;

[0047] (3) Pretreat the powdery filler, add the above-mentioned magnesium oxide, coated red phosphorus, and green powder into the high-speed mixer, and then add isopropyl tris (dioctyl pyrophosphate acyloxy) titanate, Mix well and set aside;

[0048] (4) Add the above-mentioned uniformly mixed powder filler together with PA66, glass fiber, flow modifier, compatibilizer, antioxidant, EBS and black masterbatch into a high-speed mixer and mix evenly, and then add ...

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Abstract

The invention relates to a material for new energy battery cases and a preparation method of the material. The material is prepared from the following raw materials by mass percent: 30-60% of PA66, 10-14% of glass fiber, 15-30% of insulating heat-conducting powder, 8-15% of a flame retardant, 0.3-0.8% of a high-flow modifier, 0.1-1% of a coupling agent, 3-10% of a compatilizer, 0.2-0.5% of an antioxidant, 0.2-0.5% of a lubricant, 0-3% of toner and 0.5-2% of black master batch. The material provided by the invention not only has excellent mechanical property and flame retardant property, but also has certain heat conducting and cooling capabilities, and has the advantages of greatly improving the working environment of the new energy batteries, prolonging the service life, endowing the material with excellent processing fluidity while not reducing the mechanical property of the material, greatly reducing the processing cost and saving the energy.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a special material for new energy battery shells and a preparation method thereof. Background technique [0002] With the development of science and technology and the enhancement of people's awareness of environmental protection, the application of new energy batteries is becoming more and more extensive, and the current application in battery cars and electric motorcycles has great advantages. New energy battery casings mainly include steel casings, aluminum casings, flexible packaging, and plastic casings. Plastic casings have attracted more and more attention due to their high degree of design freedom, corrosion resistance, insulation, and light weight. At present, the plastic casings used in the market are mainly flame-retardant polypropylene (PP) and flame-retardant acrylonitrile-butadiene-styrene copolymer (ABS), which have high impact performance, surface performance and ...

Claims

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Application Information

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IPC IPC(8): C08L77/06C08L51/06C08L23/08C08K13/06C08K9/10C08K3/02C08K7/14C08K3/34C08K3/38C08K3/22C08K3/28C08J3/22B29C47/92B29C48/92
CPCC08L77/06B29C48/92B29C2948/92209C08J3/226C08J2377/06C08J2423/08C08L2201/02C08L2203/20C08L2205/035C08L51/06C08L83/04C08L23/0853C08K13/06C08K9/10C08K9/06C08K2003/026C08K7/14C08K3/34C08K3/04C08L51/00C08K2003/385
Inventor 周海堤张强陈光伟周军杰孟成铭
Owner SHANGHAI SUNNY
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