• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >Fabrication of ceramic nanofibers using polydimethylsiloxane and polyacrylonitrile polymer blends
【24h】

Fabrication of ceramic nanofibers using polydimethylsiloxane and polyacrylonitrile polymer blends

机译：使用聚二甲基硅氧烷和聚丙烯腈聚合物共混物制备陶瓷纳米纤维

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

Nanofibers with several hundred of nanometers were successfully fabricated using electrospinning process and a mixture of two types of polymers which are: polydimethylsiloxane and polyacrylonitrile as precursors. After stabilization and carbonization at 1000 degrees C, three phases which are: silicon carbide (SiC), carbon, and oxy-SiC were presented. Spectroscopic and microscopic techniques had confirmed the presence of nanocrystalline SiC and turbostratic carbons. These phases formed an intertwined network at the nanometric scale. In addition, the resulted fibers showed a core-skin effect with skin richer in carbon and a core mainly dominated by silicon-based phases in the form SiC or SiAOAC ceramics. A significant improvement was observed in both tensile strength and elastic modulus in these hybrid fibers. In term of crystallography, these nanofibers seem to exhibit similar microstructure that was observed in Nicalon fiber. However, it was difficult to determine the ratio of these phases and their influence on the physical properties of these hybrid fibers. (C) 2017 Wiley Periodicals, Inc.
机译：使用静电纺丝工艺成功制造具有几百纳米的纳脂纤维，以及两种类型的聚合物的混合物，如：聚二甲基硅氧烷和聚丙烯腈作为前体。稳定在1000℃的稳定和碳化后，提出了以下三个阶段：碳化硅（SiC），碳和氧-SiC。光谱和微观技术证实存在纳米晶体和涡轮碳的存在。这些阶段以纳米级形成交叉网络。此外，所得纤维显示核心皮肤效果，碳富有浓郁的碳和芯，主要由SiC或SiaOac陶瓷中的硅基相中占主导地位。在这些杂合纤维中的拉伸强度和弹性模量中观察到显着改善。在晶体学中，这些纳米纤维似乎表现出类似于在尼克康纤维中观察到的微观结构。然而，难以确定这些阶段的比例及其对这些杂化纤维的物理性质的影响。 （c）2017 Wiley期刊，Inc。

著录项

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