石素宇;王利娜;耿可;赵康;郑国强;

• 1:河南工程学院材料与化学工程学院
• 2:郑州大学材料科学与工程学院

摘要(Abstract)：

为提高线性低密度聚乙烯(LLDPE)的拉伸强度和模量,扩大其应用领域,将多壁碳纳米管(MWCNTs)与LLDPE共混,通过熔体挤出-拉伸法制备了LLDPE/MWCNTs复合薄膜.利用扫描电子显微镜(SEM)、X-射线衍射仪(XRD)、拉曼光谱分析和拉伸测试对LLDPE/MWCNTs复合薄膜的结晶行为及力学性能进行表征.结果表明:MWCNTs在基体中分散均匀,形成取向的纳米杂化串晶结构;MWCNTs和LLDPE基体间界面结合力较强;MWCNTs的异相成核作用促进了聚合物分子链的结晶,使结晶度增加;MWCNTs的加入显著改善了复合薄膜的拉伸强度和模量,当MWCNTs的含量为1%时,拉伸强度和模量分别提高了101.8%和117.6%,同时,韧性也提高到原来的2.5倍.

关键词(KeyWords)： 线型低密度聚乙烯;多壁碳纳米管;结晶行为;熔体挤出-拉伸

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(51173171);; 河南工程学院博士基金(D2015018)

作者(Authors): 石素宇;王利娜;耿可;赵康;郑国强;

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