Scholarlink

<p>We fabricated aramid nanofiber aerogels using ice-templated and freeze-dried method, and introduced them as a 3D filler framework in PTFE-based composites. Additionally, the deprotonation method was employed to introduce reactive groups on the aramid nanofiber aerogels’ surface, strengthening the interfacial bonding between the aramid nanofiber aerogels and the PTFE matrix. This interfacial modification strategy effectively improves the interfacial compatibility of the composites. As a result, the prepared composites exhibit remarkable tensile strength (36 MPa), a low coefficient of thermal expansion (55 ppm/°C), and excellent dielectric properties (dielectric constant (<i>D</i><sub>k</sub> 2.18), dielectric loss (<i>D</i><sub>f</sub> &lt;0.003) at 10 GHz), making them highly suitable for high-frequency integrated devices.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Ice-templated Aramid Nanofiber Aerogel-reinforced PTFE Composites for High-frequency Applications

  • 期刊论文

  • 发表日期：

    2026年5月26日

查看全文
  • Yuqin Wang,
  • Xian Chen,
  • Qiangzhi Li,
  • Zhangwei Wu,
  • Jing Zhou,
  • Jie Shen,
  • Wen Chen

摘要

We fabricated aramid nanofiber aerogels using ice-templated and freeze-dried method, and introduced them as a 3D filler framework in PTFE-based composites. Additionally, the deprotonation method was employed to introduce reactive groups on the aramid nanofiber aerogels’ surface, strengthening the interfacial bonding between the aramid nanofiber aerogels and the PTFE matrix. This interfacial modification strategy effectively improves the interfacial compatibility of the composites. As a result, the prepared composites exhibit remarkable tensile strength (36 MPa), a low coefficient of thermal expansion (55 ppm/°C), and excellent dielectric properties (dielectric constant (Dk 2.18), dielectric loss (Df <0.003) at 10 GHz), making them highly suitable for high-frequency integrated devices.