• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>繊維学会誌 >Preparation of p-Aramid Aerogels Using Supercritical CO_2
【24h】

Preparation of p-Aramid Aerogels Using Supercritical CO_2

机译：超临界CO_2制备对位芳纶气凝胶

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

New highly porous p-aramid aerogel was produced from p-aramid/DMSO/TBAF solution. The solution was gelled to obtain shaped three-dimensional objects, and that p-aramid DMSO-gel was regenerated by solvent substitution followed by supercritical drying with CO_2. To investigate the influences of hydrogen bonds on aerogel preparation, two kinds of p-aramid fiber, Kevlar~® and Technora~® were employed. The effects of different procedure parameters, such as concentration of hydrogen accepter, TBAF, homogenization time and type of exchange solvent on the formation of p-aramid gels and aerogels after supercritical CO_2 (scCO_2) drying were discussed by measuring the homogenization time, compression modulus, volume shrinkage, and surface morphology of the gels and aerogels. Consequently, the Kevlar~® aerogel with density of 0.018 g/cm~3 was obtained under optimal conditions.
机译：从对位芳纶/ DMSO / TBAF溶液中生产出新型的高度多孔的对位芳纶气凝胶。将该溶液凝胶化以获得定形的三维物体，并且通过溶剂置换然后用CO 2超临界干燥来再生对-芳族聚酰胺DMSO-凝胶。为了研究氢键对气凝胶制备的影响，使用了两种对位芳纶纤维，Kevlar和Technora。通过测量均质时间，压缩模量，讨论了超临界CO_2（scCO_2）干燥后氢受体浓度，TBAF，均质时间和交换溶剂类型等工艺参数对对位芳纶凝胶和气凝胶形成的影响。 ，凝胶和气凝胶的体积收缩率和表面形态。因此，在最佳条件下获得了密度为0.018 g / cm〜3的Kevlar®气凝胶。

著录项

  • 来源
    《繊維学会誌》 |2014年第10期|233-239|共7页
  • 作者

    Zhenzong Shao; Satoko Okubayashi;

  • 作者单位

    Graduate School of Science and Technology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan;

    Graduate School of Science and Technology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan;

  • 收录信息
  • 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