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发明公开
CN106633328A 一种聚乙烯组合物及其薄膜 有权

一种聚乙烯组合物及其薄膜
摘要：
本发明提供了一种聚乙烯组合物及其薄膜。所述聚乙烯组合物含有组分A、组分B、组分C、成核剂和石油树脂；组分A为乙烯/α烯烃共聚的线性低密度聚乙烯，其在温度为190℃、载荷为2.16kg下的熔融指数MFRA为0.01-3.5g/10min，密度ρA为0.880-0.936g/cm3；组分B为乙烯/α烯烃共聚的线性低密度聚乙烯，其在温度为190℃、载荷为2.16kg下的熔融指数MFRB为3.6-9.9g/10min，密度ρB为0.910-0.930g/cm3；组分C为乙烯/α烯烃共聚的线性低密度聚乙烯，其在温度为190℃、载荷为2.16kg下的熔融指数MFRC为10-80g/10min，密度ρC为0.880-0.930g/cm3。将该聚乙烯组合物采用平膜拉伸法制备聚乙烯薄膜时，成膜性非常好，并且得到的薄膜具有较高的模量。
摘要（英）：

The invention provides a polyethylene composition and a thin film with the same. The polyethylene composition comprises a component A, a component B, a component C, nucleating agents and petroleum resin. The component A is ethylene/alpha olefin co-polymerization linear low-density polyethylene, the melt flow rate MFR of the component A is 0.01-3.5 g/10 min under the conditions of the temperature of 190 DEG C and load of 2.16 kg, and the density rho of the component A is 0.880-0.936 g/cm<3>; the component B is ethylene/alpha olefin co-polymerization linear low-density polyethylene, the melt flow rate MFR of the component B is 3.6-9.9 g/10 min under the conditions of the temperature of 190 DEG C and the load of 2.16 kg, and the density rho of the component B is 0.910-0.930 g/cm<3>; the component C is ethylene/alpha olefin co-polymerization linear low-density polyethylene, the melt flow rate MFR of the component C is 10-80 g/10 min under the conditions of the temperature of 190 DEG C and the load of 2.16 kg, and the density rho of the component C is 0.880-0.930 g/cm<3>. The polyethylene composition and the thin film have the advantages that the polyethylene composition is excellent in film forming property when the polyethylene thin film is prepared from the polyethylene composition by the aid of flat film stretching methods, and the thin film is high in modulus.

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