• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文学位 >Fundamental properties of thermoset resin with boron nitride nanotube reinforcement for radiation shielding applications.
【24h】

Fundamental properties of thermoset resin with boron nitride nanotube reinforcement for radiation shielding applications.

机译：具有氮化硼纳米管增强材料的热固性树脂的基本性能，适用于辐射屏蔽应用。

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

Boron nitride nanotubes (BNNT's), like carbon nanotubes (CNT's), have properties beneficial for the application in various fields of science including materials, electronics, and medicine. B10 has one of the largest neutron capture cross sections of any isotope and presents an opportunity to incorporate radiation shielding in composite materials by infusing the matrix with BNNT's. However, due to the challenges in synthesizing quality BNNT's, little research has been done to further the technology. The aim of this research is to: 1) Create theoretical models to substantiate that there is no detrimental effects on the fundamental properties, such as: modulus, strength and glass transition temperature. 2) Acquire structural information on the BNNT's and the resin system infused with BNNT's and 3) Generate experimental data which will verify the computational models. Structural information has been obtained on the BNNT's and nanocomposites by analytical and microscopic techniques. Calculations of the fundamental mechanical material properties of BNNT's are performed utilizing molecular dynamics simulations via Material Studio by Accelrys Inc. After the full characterization of the BNNT's, BNNT's have been dispersed into the Epon862/W thermoset resin system. Glass transition temperature has been predicted by simulating the annealing process and monitoring the density of the material at various temperatures. Also, interfacial information between the BNNT's and resin system has been described to provide a foundation for engineers in the fabrication of nanocomposites. Experimental data, from the differential scanning calorimetry (DSC), of glass transition temperature confirms the accuracy of the computational models. Also, models in which the BNNT's undergo hydrogenation have been performed to understand the effects of hydrogenation on the properties of the BNNT's and the nanocomposite. Previous studies have demonstrated that CNT's have improved the mechanical and thermal properties of nanocomposites. Thus, it has been demonstrated that BNNT's will have advantageous effects on the fundamental properties of composites while incorporating radiation shielding.
机译：氮化硼纳米管（BNNT）像碳纳米管（CNT）一样，具有有益于各种科学领域的应用的特性，包括材料，电子和医学。 B10具有任何同位素中最大的中子俘获截面之一，并提供了通过向基质中注入BNNT来将辐射屏蔽结合到复合材料中的机会。然而，由于合成高质量BNNT的挑战，很少进行进一步的技术研究。这项研究的目的是：1）创建理论模型以证实对基本性能没有不利影响，例如：模量，强度和玻璃化转变温度。 2）获取有关BNNT和注入BNNT的树脂系统的结构信息，以及3）生成实验数据以验证计算模型。已经通过分析和显微镜技术获得了有关BNNT和纳米复合材料的结构信息。 BNNT的基本机械材料性能的计算是通过Accelrys Inc.通过Material Studio利用分子动力学模拟进行的。在对BNNT进行全面表征之后，BNNT已被分散到Epon862 / W热固性树脂体系中。通过模拟退火过程并监测各种温度下材料的密度，可以预测玻璃化转变温度。而且，已经描述了BNNT和树脂系统之间的界面信息，为工程师制造纳米复合材料提供了基础。来自差示扫描量热法（DSC）的玻璃化转变温度的实验数据证实了计算模型的准确性。而且，已经进行了其中BNNT's进行氢化的模型以了解氢化对BN​​NT's和纳米复合材料的性质的影响。先前的研究表明，CNT已改善了纳米复合材料的机械性能和热性能。因此，已经证明BNNT's将在掺入辐射屏蔽的同时对复合材料的基本性能具有有利的影响。

著录项

  • 作者

    Estevez, Joseph Evans.;

  • 作者单位

    The University of North Carolina at Greensboro.;

  • 授予单位 The University of North Carolina at Greensboro.;
  • 学科 Nanotechnology.
  • 学位 Ph.D.
  • 年度 2014
  • 页码 131 p.
  • 总页数 131
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 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