首页|EPR/PP/M-CNF纳米复合材料的制备及性能研究

EPR/PP/M-CNF纳米复合材料的制备及性能研究

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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/m2和368.73℃,并且复合材料中PP相的球晶尺寸变小,晶界面模糊.
Preparation and properties of EPR/PP/M-CNF nanocomposites
Cellulose nanofihers(CNF)were pretreated by alkali solution to obtain alkali pretreated cellulose nanofihers(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/m2and 368.73 ℃,respectively.In addition,the spherulite size of PP phase in the composite decreases and the grain interface is blurred.

polypropylenebinary ethylene propylene rubbercomposite materialcellulose nanofibers

韩贤新、王宇威、樊丽权、姜永旺、岳莹、许珂琳、李玉鑫、刘喜军

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齐齐哈尔大学材料科学与工程学院,黑龙江齐齐哈尔 161006

聚丙烯 二元乙丙橡胶 复合材料 纤维素纳米纤维

黑龙江省重点研发计划指导类项目黑龙江省聚合物基复合材料重点实验室开放课题

GZ20210034CLKFKT2021B23

2024

齐齐哈尔大学学报(自然科学版)
齐齐哈尔大学

齐齐哈尔大学学报(自然科学版)

影响因子:0.182
ISSN:1007-984X
年,卷(期):2024.40(4)