以低密度聚乙烯(LDPE) 和线性低密度聚乙烯(LLDPE) 作为基础物质,添加乙烯-醋酸乙烯酯共聚物(EVA),吹制保鲜膜,研究了保鲜膜的力学性能和摩擦性能。 研究表明,复合膜的拉伸强度、伸长率、耐戳穿强度和撕裂强度随着 EVA 含量的增加,总体呈下降趋势,摩擦系数则逐渐上升。

Low density polyethylene(LDPE) and linear low density polyethylene(LLDPE) were used as basic materials, and ethylene vinyl acetate copolymer(EVA) were added into them to blow fresh-keeping films. The mechanical and friction performance of the films were studied. The results showed that with increase of EVA content, the tensile strength, elongation, puncture resistance strength and tear strength decrease, but the coefficient of friction increases.