钛酸钡修饰碳纳米管聚合物纳米复合材料的力学和动态力学性能

U. O. Uyor, P. Popoola, O. Popoola
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引用次数: 1

摘要

本研究提出了用功能化钛酸钡(BT)(表示为BT@CNTs)修饰的功能化碳纳米管(CNTs),通过水热和自组装方法改善了在聚丙烯(PP)基体中的分散,增强了热、机械和热机械性能。采用溶液混合和熔融复合的方法,将CNTs、BT和BT@CNTs加入聚丙烯顺丁二烯酸酐(PPMA)增容剂,制备了PP基纳米复合材料。红外光谱(FTIR)、透射电镜(TEM)和扫描电镜(SEM)分析表明,纳米颗粒被成功功能化,碳纳米管被BT修饰,并且在PP基体中分散良好。PP/BT@CNTs-based纳米复合材料的抗拉强度、模量、热挠度和热稳定性分别比纯PP高16.8%、26.5%、20.1%和30℃,比PP/3BT@CNTs分别高10.6%、17.6%、19.0%和5.0℃。基于PP/BT@CNTs的纳米复合材料也显示出增强的动态力学性能。与纯PP和PP/CNTs相比,PP/BT@CNTs的性能表现更好,这是由于它们具有均匀的微观结构,并且由于碳纳米管表面存在BT而使PP基体有效互锁。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Enhanced mechanical and dynamic mechanical properties of polymer nanocomposites containing carbon nanotubes decorated with barium titanate
This study presents functionalized carbon nanotubes (CNTs) decorated with functionalized barium titanate (BT) (denoted as BT@CNTs) via hydrothermal and self-assembly methods to improve dispersion in polypropylene (PP) matrix with enhanced thermal, mechanical, and thermomechanical properties. The CNTs, BT, and BT@CNTs with the addition of polypropylene maleic anhydride (PPMA) compatibilizer were used in the fabrication of the PP based nanocomposites for this study via solution mixing and melt compounding. FTIR, TEM, and SEM analyses, respectively revealed that the nanoparticles were successfully functionalized, CNTs decorated with BT, and well dispersion in the PP matrix. PP/BT@CNTs-based nanocomposite showed optimal tensile strength, modulus, heat deflection, and thermal stability of about 16.8%, 26.5%, 20.1%, and 30oC higher than that obtained for the pure PP. These properties were also respectively 10.6%, 17.6%, 19.0%, and 5.0oC higher than PP/3CNTs nanocomposite when compared to PP/3BT@CNTs. The PP/BT@CNTs based nanocomposites also revealed enhanced dynamic mechanical properties. The better performance in the measured properties of PP/BT@CNTs compared to pure PP and PP/CNTs were attributed to their uniform microstructures, effective interlocking of the PP matrix due to the presence of BT on CNTs surfaces.
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