LDPE与LLDPE共混树脂薄膜的研究

发布时间：2018-02-05 23:02

本文关键词： 低密度聚乙烯线性低密度聚乙烯流变性能拉伸强度热稳定性能　出处：《现代塑料加工应用》2017年04期 　论文类型：期刊论文

【摘要】：将线性低密度聚乙烯(LLDPE)与低密度聚乙烯(LDPE)经过熔融共混、挤出吹制得一系列薄膜。分析了共混树脂的流变性能,研究了共混树脂的结晶性能,讨论了薄膜的力学性能和热稳定性能。结果表明:纯树脂和共混树脂熔体都是假塑性流体,通过升温同样可以降低共混树脂的表观黏度,共混树脂薄膜的力学性能优于纯LDPE薄膜,LDPE质量分数为70%的薄膜热稳定性最佳。
[Abstract]:A series of films were prepared by melt blending of LLDPE and LDPE. The rheological properties of the blend resin were analyzed. The crystallization property of the blend resin was studied and the mechanical properties and thermal stability of the film were discussed. The results showed that the melt of pure resin and blend resin were pseudoplastic fluid. The apparent viscosity of the blend resin can also be reduced by heating the temperature. The mechanical properties of the blend film are better than that of the pure LDPE film with the mass fraction of 70%. The thermal stability of the blend film is the best.
【作者单位】：南京理工大学化工学院;
【基金】：江苏省科技支撑(社会发展)项目(BE2013714)
【分类号】：TB383.2;TQ325.12

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