Polypropylene material for impermeable expansion kettle and preparation method of polypropylene material

The invention discloses a polypropylene material for an anti-permeation expansion kettle and a preparation method of the polypropylene material, and the polypropylene material is prepared from the following components in percentage by weight: 65-90% of polypropylene; 5-20% of polyethylene; 1-5% of epoxy resin; 1-5% of talcum powder; 1%-5% of bentonite; the composite material mainly comprises polypropylene, polyethylene, epoxy resin, talcum powder and bentonite, the prepared composite material has good mechanical strength and toughness and anti-permeation performance, and the functional requirement of the expansion kettle for the automobile can be met. 本发明公开了一种用于防渗透膨胀水壶的聚丙烯材料及其制备方法，按重量百分计，由以下组分制成：聚丙烯65～90％；聚乙烯5～20％；环氧树脂1～5％；滑石粉1～5％；膨润土1～5％；本发明中的复合材料主要包括聚丙烯、聚乙烯、环氧树脂、滑石粉以及膨润土，制备出不仅具有良好力学强度以及韧性、并且具有防渗透性能的复合材料，可满足汽车用膨胀壶的功能性需求。