Drug packaging PE (polyethylene) film polyurethane adhesive and preparation method thereof

The invention provides a drug packaging PE film polyurethane adhesive. The drug packaging PE film polyurethane adhesive is characterized by being prepared by mixing a first component and a second component, wherein the first component is prepared from raw materials including, by weight part, 70-100 parts of oligomeric polyols, 5-20 parts of polyisocyanates, 20-50 parts of ethyl acetate, 0.5-1.0 part of nanoparticles and 0.5-1.0 part of coupling agent; the second component is prepared from raw materials including, by weight part, 60-120 parts of polyether polyols and 50-80 parts of polyisocyanates. The drug packaging PE film polyurethane adhesive is high in peeling strength when applied to thin PE films to meet the requirements of drug packaging, and meanwhile, is low in organic solvent residues in compounded films as well as use costs. 本发明提供了种用于药品包装PE薄膜的聚氨酯胶粘剂，其特征在于，由第组分和第二组分混合组成，所述第组分制备原料包括低聚物多元醇、多异氰酸酯、乙酸乙酯、纳米粒子、偶联剂；所述第二组分制备原料包括聚醚多元醇、多异氰酸酯；所述第组分制备原料中各原料重量配比为低聚物多元醇70-150份、多异氰酸酯5-20份、乙酸乙酯20-50份、纳米粒子0.5-1.0份、偶联