Automobile battery shell rubber coating material, and preparation method

Abstract

The invention relates to an automobile battery shell rubber coating material, and a preparation method thereof. The material comprises components with the following parts by weight: 60-90 parts of a thermoplastic elastomer, 5-25 parts of a melt-blown polymer, 5-30 parts of a flame retardant, 0-20 parts of a filler, 1-20 parts of an interface modifier, 0.5-12 parts of a foamer, 1-10 parts of a foaming synergist, 0.5-2 parts of a lubricant, and 0.2-1 part of an antioxidant. The invention further discloses the preparation method of the automobile battery shell rubber coating material. The automobile battery shell rubber coating material and the preparation method thereof have the advantages that through high fluidity and extremely high machining formability, a complex battery shell structurecan be accurately replicated, the material can be effectively adhered to the battery shell structure, and the product wall thickness can be optimally reduced, so that high product portability is achieved; the material can be effectively bonded with a metal or engineering plastic shell, so that the problem of high dropping possibility of the conventional market product is effectively solved, and better buffering protection effects for a battery are achieved; and the material has excellent low-temperature-resistant, buffering and flame-retardant performances, so that such problems as unsatisfactory low-temperature falling ball impact performance and unsatisfactory shock-resistant performance of the conventional market product are solved.

Description

technical field [0001] The invention relates to an automobile battery casing rubber covering material and a preparation method thereof, belonging to the field of materials Background technique [0002] As the carrier of the battery module, the car battery case plays a key role in the safe operation and protection of the battery module. It is required (1) to be convenient for maintenance; (2) to play a protective role in the event of accidents such as vehicle collision or spontaneous combustion of the battery. At present, the materials are mainly thermosetting SMC composite materials, PC / ABS alloy materials, etc. These materials have sufficient mechanical strength, but they cannot meet the drop test of the battery case, especially the low temperature drop test at -30°C; therefore, an external package is usually used. Layers of rubberized materials improve the drop resistance of the shell, but the rubberized materials currently on the market have the following problems: 1. Th...

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Problems solved by technology

In addition, the present invention adopts micro-foaming technology to improve the quality and appearance of the product such as serious shrinkage, and also has excellent low temperature resistance, excellent cushioning property, flame retardant properties, etc., and solves the problems of poor low temperature impact performance and poor shock resistance of the product.

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