• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文学位 >Conducting polymer nanocomposites loaded with nanotubes and fibers for electrical and thermal applications.
【24h】

Conducting polymer nanocomposites loaded with nanotubes and fibers for electrical and thermal applications.

机译：用于电气和热学应用的载有纳米管和纤维的导电聚合物纳米复合材料。

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The design, fabrication and measurement of electrical and thermal properties of polymers loaded with nanotubes and fibers are the foci of the work presented in this dissertation. The resulting products of blending polymers with nanomaterials are called nanocomposites and are already finding applications in many areas of human endeavour. Among some of the most recent envisioned applications of nanocomposites is in electronic devices as thermal interface materials (TIMs). This potential application as TIMs, has been made more real by the realization that carbon nanotubes, could potentially transfer their high electrical, thermal and mechanical properties to polymers in the nanocomposites.;In Chapter 1, the events leading to the discovery of carbon nanotubes are reviewed followed by an elaborate discussion of their structure and properties. The discussion of the structure and properties of carbon nanotubes help in understanding the envisaged applications.;Chapter 2 focuses on the fabrication of insulating polymer nanocomposites, their electrical and mechanical properties. Poly (methyl methacrylate) (PMMA) and a polyimide formed by reacting pyromellitic dianhydride (PMDA) and 4, 4'-oxydianiline (ODA) (PMDA-ODA) nanocomposites with carbon nanotubes were prepared by in-situ polymerization. Poly (1-methyl-4-pentene) (TPX), Polycarbonate (PC), Poly (vinyl chloride) (PVC), Poly (acrylonitrile-butadiene-styrene) (ABS), the alloys ABS-PC, ABS-PVC, and ABS-PC-PVC nanocomposites were prepared from the respective polymers and carbon nanotubes and their mechanical and electrical properties measured.;Chapter 3 covers the nanocomposites that were prepared by the in-situ polymerization of the conducting polymers Polyaniline (PANi), Polypyrrole (PPy) and Poly (3, 4-ethylenedioxythiophene) (PEDOT) by in-situ polymerization. These are evaluated for electrical conductivity. The use of surfactants in facilitating carbon nanotube dispersion is discussed and applied in the preparation of conducting polymer nanocomposites.;In Chapter 4 epoxy nanocomposites are prepared. MWCNTs, Graphite Fibers and Boron Nitride are used as filler materials. There thermal conductivity is determined by using the Flash Technique as well as Differential Scanning Calorimetry (DSC). The thermal conductivity of graphite and BN loaded epoxy was found to be much higher than for the MWCNTs filled.;Chapter 5 covers the synthesis and electrical conductivity of PANi nanotubes and nanorods without the use of templates. Also covered in this Chapter is the template free synthesis of Cu (II) hydroxide and Copper nanorods.;In Chapter 6, Organic Solderability Preservatives (OSPs) are evaluated for integrity after thermal stress. The two types of OSPs that are evaluated in this chapter are a benzimidazole derivative known as WPF207 and an imidazole derivative called F2LX. The OSP WPF was found to be more robust. In Chapter 7, two encapsulants are evaluated after thermal stress. The encapsulants are Sumitomo type 6730B and type 6730B-LX. No significant differences were found after analysis.
机译：负载有纳米管和纤维的聚合物的电学和热学性能的设计，制造和测量是本文研究的重点。将聚合物与纳米材料混合的最终产品称为纳米复合材料，并且已经在人类努力的许多领域中找到了应用。纳米复合材料的一些最新预期应用包括在电子设备中作为热界面材料（TIM）。认识到碳纳米管可以将其高电，热和机械性能转移到纳米复合材料中的聚合物上，从而使这种潜在的应用变得更加现实。在第一章中，导致发现碳纳米管的事件是进行审查，然后对其结构和属性进行详尽的讨论。碳纳米管的结构和性能的讨论有助于理解所设想的应用。第二章着重于绝缘聚合物纳米复合材料的制造，其电学和机械性能。通过原位聚合制备聚甲基丙烯酸甲酯（PMMA）和由均苯四甲酸二酐（PMDA）和4，4'-氧二苯胺（ODA）（PMDA-ODA）纳米复合材料与碳纳米管反应形成的聚酰亚胺。聚（1-甲基-4-戊烯）（TPX），聚碳酸酯（PC），聚氯乙烯（PVC），聚（丙烯腈-丁二烯-苯乙烯）（ABS），合金ABS-PC，ABS-PVC，分别由聚合物和碳纳米管制备ABS-PC-PVC和ABS-PC-PVC纳米复合材料，并测量其机械和电性能。第3章介绍了通过导电聚合物聚苯胺（PANi），聚吡咯（ PPy）和聚（3，4-乙撑二氧噻吩）（PEDOT）通过原位聚合制备。对它们的电导率进行评估。讨论了表面活性剂在促进碳纳米管分散中的应用，并将其应用于导电聚合物纳米复合材料的制备中。第四章制备了环氧纳米复合材料。 MWCNT，石墨纤维和氮化硼用作填充材料。通过使用闪光技术以及差示扫描量热法（DSC）确定那里的热导率。发现石墨和负载BN的环氧树脂的热导率比填充的MWCNT高得多。第五章介绍了不使用模板的PANi纳米管和纳米棒的合成和电导率。本章还介绍了无模板的氢氧化铜（II）和铜纳米棒的合成。在第6章中，评估了热应力作用下有机可焊性防腐剂（OSP）的完整性。本章中评估的两种OSP是称为WPF207的苯并咪唑衍生物和称为F2LX的咪唑衍生物。发现OSP WPF更强大。在第7章中，在热应力作用下评估了两种密封剂。密封剂为住友6730B型和6730B-LX型。分析后未发现显着差异。

著录项

  • 作者

    Chiguma, Jasper.;

  • 作者单位

    State University of New York at Binghamton.;

  • 授予单位 State University of New York at Binghamton.;
  • 学科 Engineering Materials Science.
  • 学位 Ph.D.
  • 年度 2009
  • 页码 279 p.
  • 总页数 279
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程材料学;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号