Heat-conducting and flame-retardant V0 polypropylene material for storage battery of new-energy vehicle and preparation method

Abstract

The invention discloses a heat-conducting and flame-retardant V0 polypropylene material for a storage battery of a new-energy vehicle and a preparation method. The heat-conducting and flame-retardantV0 polypropylene material is prepared from the following raw materials in parts by mass: 30-50 parts of polypropylene matrix, 15-25 parts of brominated flame-retardant agent, 5-8 parts of flame-retardant agent synergist, 15-30 parts of heat-conducting powder, 0.5-1 part of polytetrafluoroethylene, 0.5-1 part of antioxidant, 3-5 parts of compatibilizer and 0.5-1 part of lubricant. The heat-conducting and flame-retardant V0 polypropylene material and the preparation method disclosed by the invention have the beneficial effects that the raw materials are added into a high-speed mixing machine foruniform mixing according to the proportion, and are melted and extruded by a dual-screw extruder; the whole operation and processing are simple, the mixing is uniform and the direct granulation can be achieved; all the used materials can not cause influence on the environment, so that the environment-friendly effect is achieved and the cost of the material is reduced; the heat-conducting and flame-retardant V0 polypropylene material has heat conductivity and low shrinkage and realizes V0-grade flame retardance.

Description

technical field [0001] The invention relates to the technical field of materials for manufacturing new energy vehicle battery components, in particular to a heat-conducting and flame-retardant V0 polypropylene material for new energy vehicle batteries and a preparation method thereof. Background technique [0002] The parts of the battery shell have heating functions. For safety reasons, flame-retardant V0 materials are used. PP polypropylene is one of the most widely used materials. It is cheap, easy to process, and has excellent comprehensive performance. It is the next polyethylene (PE) Another important plastic variety after that. It has good heat resistance, and it will not be destroyed when it is cooked at 135°C for 1000 hours. The specific heat capacity and thermal conductivity of PP are smaller than that of PE, but its thermal insulation is better than that of PE. PP is a non-polar polymer with excellent dielectric and electrical insulation properties. The electrica...

AI Technical Summary

Problems solved by technology

Considering the reduction of material density and cost, the above-mentioned proposal developed a polypropylene material that can also achieve the V0 flame retardant effect, but its density is reduced and its weight is lighter, which cannot meet the processing requirements of automobile battery shells, and cannot form Good protection to the storage battery, and the above-mentioned scheme proposes the compounding of decabromodiphenylethane and Sb2O3 used in the present invention, the price of antimony trioxide keeps rising and other comprehensive factors, the cost of the flame-retardant polypropylene prepared is too high, but relatively Compared with the improvement of safety level when new energy vehicle batteries are in use, the cost is negligible

[0005] To sum up, a thermally conductive and flame-retardant V0 polypropylene material that can match the shell of new energy vehicle batteries has not yet been developed to form an effective protection for new energy vehicle batteries and play an effective role in flame retardancy

Images