Studies on Preparation and Property of 2.5D SiO2f/ SiO2 Composites

摘要：

In this paper, 2.5D SiO2f/SiO2 composites were fabricated via sol-gel process employing 2.5D braided silica fiber fabrics as reinforcements and high pure silicasol as slurry. The process parameters are optimized and the optimal parameters are as follows: the silicasol of 30.8 wt. ％ as slurry, microwave drying, and sintering at 900 ℃. Utilizing the optimal process parameters, the density and the flexural strength of the composites can reach 1.65 g·cm-3 and 80.68 MPa respectively. Dielectric properties of the 2.5D SiO2f/SiO2 composites were also measured, and the real part of the permittivity is 3.40 at 5 GHz. The excellent mechanical and dielectric properties of the 2.5D SiO2f/SiO2 composites can well meet the requirements of radome materials.

关键词： 2.5D SiO2f/ SiO2 composites Sol-gel Mechanical properties Dielectric properties

作者: Shuang Han Kaihui Jiang Junwu Tang

作者单位: Tianjin College, Navy University of Engineering, Tianjin 300450, China

会议类型: 国际会议

会议名称: 第二届多功能材料与结构国际会议

会议地点: 青岛

会议语种:英文

页码: 1767-1770

在线出版日期: 2009-10-09（万方平台首次上网日期，不代表论文的发表时间）