High and low temperature resistant polyvinyl chloride alloy elastomer polymer and preparation method thereof

The invention provides a high and low temperature resistant polyvinyl chloride alloy elastomer polymer and a preparation method thereof, and relates to the technical field of high polymer materials. The polyvinyl chloride alloy elastomer polymer is prepared from the following components in parts by weight: 100 parts of polyvinyl chloride resin, 70 to 90 parts of a plasticizer, 5 to 15 parts of a stabilizer, 15 to 25 parts of a flame retardant, 0.5 to 1.0 part of a lubricant, 0.5 to 1.0 part of an antioxidant, 20 to 60 parts of a flexibilizer, 0.2 to 0.8 part of an ultraviolet light absorber and 1 to 5 parts of a processing aid, in the implementation process, the polyvinyl chloride resin with high polymerization degree and the polyvinyl chloride resin with medium polymerization degree are mixed, and the two resins can cooperate with each other and are mixed with the specific plasticizer, the flexibilizer and the processing aid, so that the obtained composite material has excellent mechanical properties, good h