论文标题
聚苯胺和石墨烯纳米复合材料，用于增强碳纤维/环氧复合材料的层间断裂韧性和热机械特性
Polyaniline and graphene nanocomposites for enhancing the interlaminar fracture toughness and thermo-mechanical properties of carbon fiber/epoxy composites
论文作者
论文摘要
分层是碳纤维增强聚合物（CFRP）复合材料的主要关注点之一。改善断裂韧性可减少分层，并允许创建多功能CFRP。在这项研究中，借助环境友好的热塑性聚合物聚乙烯基吡咯烷酮（PVP），在CFRP Pre-Preg的层间区域中引入了聚苯胺（PANI）涂层的石墨烯纳米片（GNP）。相对于PVP，GNP含量的重量为1、3和5％。使用双悬臂梁测试研究了骨折韧性的改善。使用PVP增加了5 wt％的GNP，观察到模式I骨折韧性的约79％。动态机械分析结果证实了存储模量的改善，但随着纳米填料的添加显示玻璃过渡温度降低。各种光谱分析和成像技术用于理解和评估纳米复合材料与CFRP PrePreg的相互作用。
Delamination is one of the major concerns for carbon fiber reinforced polymer (CFRP) composites. Improving fracture toughness reduces delamination and allows for the creation of multifunctional CFRP. In this study, polyaniline (PANI) coated graphene nanoplatelets (GNP) are introduced in the interlaminar region of CFRP pre-preg with the aid of environmentally friendly thermoplastic polymer, polyvinylpyrrolidone (PVP). The GNP content is varied as 1, 3, and 5% by weight with respect to PVP. The improvements in the fracture toughness are investigated using a double cantilever beam test. An improvement of approximately 79% in mode-I fracture toughness is observed with the addition of 5 wt% GNP with respect to PVP. Dynamic mechanical analysis results confirmed the improvements in storage modulus but showed a decrease in glass transition temperature with the addition of nanofiller. Various spectroscopic analysis and imaging techniques were used to understand and evaluate the interactions of nanocomposites with CFRP pre-preg.
