▎ 摘　　要

NOVELTY - High weather resistant straw composite greenhouse film comprises three-layer composite structure, where the thickness of middle layer is 2-3 times of the thickness of outer layer, and the outer layer comprises 100 pts. wt. polyvinyl chloride resin, 1-10 pts. wt. talcum powder, 30-80 pts. wt. oxidized graphene modified polyphosphazene-polyether sulfone block copolymer coated straw powder, 2-10 pts. wt. single-linolenic acid glyceride, 1-5 pts. wt. polyethylene wax, and 0.1-0.5 pts. wt. phthalocyanine blue. The middle layer comprises 100 pts. wt. polyvinyl chloride resin. USE - High weather resistant straw composite greenhouse film. ADVANTAGE - The high weather resistant straw composite greenhouse film has three-layer composite structure and high strength. DETAILED DESCRIPTION - High weather resistant straw composite greenhouse film comprises three-layer composite structure, where the thickness of middle layer is 2-3 times of the thickness of outer layer, and the outer layer comprises 100 pts. wt. polyvinyl chloride resin, 1-10 pts. wt. talcum powder, 30-80 pts. wt. oxidized graphene modified polyphosphazene-polyether sulfone block copolymer coated straw powder, 2-10 pts. wt. single-linolenic acid glyceride, 1-5 pts. wt. polyethylene wax, and 0.1-0.5 pts. wt. phthalocyanine blue. The middle layer comprises 100 pts. wt. polyvinyl chloride resin, 1-3 pts. wt. nano silicon dioxide, 40-80 pts. wt. silane modified polyphosphazene-polyether sulfone block copolymer, 2-10 pts. wt. polyethylene wax, 1-5 pts. wt. hydrogenated castor oil, and 0.1-1 pts. wt. phthalocyanine blue. An INDEPENDENT CLAIM is included for preparing high weather resistant straw composite greenhouse film which involves: (A) taking polyvinyl chloride resin, talcum powder, oxidized graphene modified polyphosphazene-polyether sulfone block copolymer coated straw powder, single-linolenic acid glyceride, polyethylene wax, and phthalocyanine blue, polyvinyl chloride resin, nano silicon dioxide, silane modified polyphosphazene-polyether sulfone block copolymer, polyethylene wax, hydrogenated castor oil, and phthalocyanine blue; (B) adding in the high speed mixing machine, mixing at 100-130 degrees C, placing in the speed mixer, cooling to 38-42 degrees C and discharging to obtain the outer layer and middle layer raw material; and (C) adopting three-layer co-extrusion composite rolling process to obtain the thickness of the middle layer of 2-3 times of the thickness of outer layer, where the rolling temperature is 160-200 degrees C.