One kind of low temperature co-modified polypropylene material and preparation method and application

The present invention discloses a modified polypropylene copolymer of low temperature resistant material and preparation method and application, the present invention is low temperature co-modified polypropylene material, comprising in weight percent based on the starting composition: 98 ~ 60% of polypropylene copolymer %; elastic body 1% to 20%; linear low density polyethylene 0 ~ 10%; 0-8% grafted polyethylene; stabilizer, 0.1% to 1%; processing aid 0.1% to 1%. The modifying material having both tensile strength and good high temperature properties, but also has good low temperature performance, can improve the performance of current polypropylene plastic seals, plastic seals meet high and low temperature use, it can be used to prepare various plastic seals such as aviation container seals, seals breeding, self-locking seals, security seals and so on.