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Processing and characterization of carbon nanotubes reinforced epoxy resin based multi-scale multi-functional composites.

机译：碳纳米管增强环氧树脂基多尺度多功能复合材料的加工和表征。

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摘要

This research is focused on investigating the effect of carbon nanotubes on macroscale composite laminate properties, such as, interlaminar shear strength, interlaminar fracture toughness and electrical conductivity along with studying the micro and nano-scale interactions of carbon nanotubes with epoxy matrix via thermomechanical and electrical characterization of nanocomposites. First an introduction to the typical advanced composite laminates and multi-functional nanocomposites is provided followed by a literature review and a summary of recent status on the processing and the characterization work on nanocomposites and composite laminates. Experimental approach is presented for the development of processing techniques and appropriate characterization methods for carbon nanotubes reinforced epoxy resin based multi-functional nanocomposites and carbon fiber reinforced polymer composite laminates modified with carbon nanotubes. The proposed work section is divided into three sub-sections to describe the processing and the characterization of carbon nanotube reinforced epoxy matrix nanocomposites, woven-carbon fabric epoxy matrix composite laminates modified with selective placement of nanotubes and unidirectional carbon fiber epoxy matrix composite laminates modified with carbon nanotubes.;Efforts are focused on comparing the effects of functionalized and unfunctionalized carbon nanotubes on the advanced composite laminates. Covalently functionalized carbon nanotubes are used for improved dispersion and fiber-matrix bonding characteristics and compared with unfunctionalized or pristine carbon nanotubes. The processing of woven carbon fabric reinforced epoxy matrix composite laminates is performed using a vacuum assisted resin transfer molding process with selective placement of carbon nanotubes using a spraying method. The uni-directional carbon fiber epoxy matrix pre-preg composites are processed using a hot press technique along with the spraying method for placement of nanotubes. These macroscale laminates are tested using short beam shear and double cantilever beam experiments for investigating the effect of nanotubes on the interlaminar shear stress and the interlaminar fracture toughness. Fractography is performed using optical microscopy and scanning electron microscopy to investigate the structure-property relationship. The micro and nano-scale interactions of carbon nanotubes and epoxy matrix are studied through the processing of unfunctionalized and functionalized single wall carbon nanotube reinforced epoxy matrix nanocomposites. The multifunctional nature of such nanocomposites is investigated through thermo-mechanical and electrical characterizations.
机译：这项研究致力于研究碳纳米管对宏观复合层压板性能的影响，例如层间剪切强度，层间断裂韧性和电导率，以及通过热机械和电学研究碳纳米管与环氧基质的微观和纳米级相互作用。纳米复合材料的表征。首先，对典型的高级复合材料层压板和多功能纳米复合材料进行了介绍，然后进行了文献综述，并概述了纳米复合材料和复合层压板的加工和表征工作的最新进展。为开发基于碳纳米管增强的环氧树脂基多功能纳米复合材料和用碳纳米管改性的碳纤维增强的聚合物复合材料层压板的加工技术和合适的表征方法，开发了实验方法。拟议的工作部分分为三个子部分，分别描述碳纳米管增强的环氧基质纳米复合材料，经选择性放置纳米管改性的机织碳纤维环氧基质复合层压板以及经碳纳米管改性的单向碳纤维环氧基质复合层压板的加工和表征。努力集中于比较功能化和非功能化碳纳米管对高级复合材料层压板的影响。共价官能化的碳纳米管可用于改善分散性和纤维-基质键合特性，并与未官能化或原始的碳纳米管进行比较。碳纤维织物增强的环氧基复合材料层压板的加工是利用真空辅助树脂传递模塑工艺进行的，其中采用喷涂法选择性地放置了碳纳米管。单向碳纤维环氧树脂基预浸料的复合材料是使用热压技术和喷涂方法处理纳米管的。这些大尺寸层压板使用短梁剪切和双悬臂梁试验进行测试，以研究纳米管对层间剪切应力和层间断裂韧性的影响。使用光学显微镜和扫描电子显微镜进行分形术以研究结构-性质关系。通过处理未官能化和功能化的单壁碳纳米管增强的环氧基质纳米复合材料，研究了碳纳米管与环氧基质的微观和纳米级相互作用。通过热机械和电学表征研究了这种纳米复合材料的多功能性质。

著录项

  • 作者

    Thakre, Piyush R.;

  • 作者单位

    Texas A&M University.;

  • 授予单位 Texas A&M University.;
  • 学科 Engineering Aerospace.;Engineering Materials Science.;Nanoscience.
  • 学位 Ph.D.
  • 年度 2009
  • 页码 208 p.
  • 总页数 208
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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