EPR/PP/M-CNF纳米复合材料的制备及性能研究  

Preparation and properties of EPR/PP/M-CNF nanocomposites

作　　者：韩贤新 王宇威[1] 樊丽权[1] 姜永旺 岳莹 许珂琳 李玉鑫 刘喜军[1] HAN Xian-xin;WANG Yu-wei;FAN Li-quan;JIANG Yong-wang;YUE Ying;XU Ke-lin;LI Yu-xin;LIU Xi-jun(School of Materials Science and Engineering,Qiqihar University,Heilongjiang Qiqihar 161006,China)

机构地区：[1]齐齐哈尔大学材料科学与工程学院,黑龙江齐齐哈尔161006

出　　处：《齐齐哈尔大学学报（自然科学版）》2024年第4期70-74,共5页Journal of Qiqihar University(Natural Science Edition)

基　　金：黑龙江省重点研发计划指导类项目(GZ20210034);黑龙江省聚合物基复合材料重点实验室开放课题(CLKFKT2021B23)。

摘　　要：纤维素纳米纤维(CNF)经碱液预处理得到碱预处理纤维素纳米纤维(APCNF),再通过二元乙丙橡胶接枝乙烯醇(EPR-g-VA)接枝共聚物溶液处理后,得到改性纤维素纳米纤维(M-CNF)。然后将M-CNF添加到EPR/PP共混体系中,制备EPR/PP/M-CNF纳米复合材料。通过扫描电子显微镜、偏光显微镜、热重分析仪、动态热机械分析仪、电子万能试验机等对EPR/PP/M-CNF纳米复合材料的微观形貌、球晶尺寸、热稳定性以及力学性能进行分析测试。结果表明,EPR、EPR-g-VA包覆APCNF形成“核-壳”结构;相对于EPR/PP共混物,EPR/PP/M-CNF纳米复合材料的热学性能和力学性能均有明显提高,EPR/PP/M-CNF纳米复合材料的冲击强度和初始热分解温度分别为13.80 kJ/m^(2)和368.73℃,并且复合材料中PP相的球晶尺寸变小,晶界面模糊。Cellulose nanofibers(CNF)were pretreated by alkali solution to obtain alkali pretreated cellulose nanofibers(APCNF),and then modified cellulose nanofibers(M-CNF)were obtained by binary ethylene propylene rubber grafted with ethylene alcohol(EPR-g-VA)copolymer solution.Then M-CNF was added to EPR/PP blend system to prepare EPR/PP/M-CNF nanocomposites.The microstructure,spherulite size,thermal stability and mechanical properties of EPR/PP/M-CNF nanocomposites were analyzed and tested by scanning electron microscope,polarizing microscope,thermogravimetric analyzer,dynamic thermomechanical analyzer and electronic universal testing machine.The results showed that EPR and EPR-g-VA coated APCNF formed a"core-shell"structure.Compared with EPR/PP blend,the thermal and mechanical properties of EPR/PP/M-CNF nanocomposites are significantly improved.The impact strength and initial thermal decomposition temperature of EPR/PP/M-CNF nanocomposites are 13.80 kJ/m^(2) and 368.73℃,respectively.In addition,the spherulite size of PP phase in the composite decreases and the grain interface is blurred.

关 键 词：聚丙烯 二元乙丙橡胶 复合材料 纤维素纳米纤维 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]