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

Shu Ang Han; Kai Hui Jiang; Jun Wu Tang

doi:10.4028/www.scientific.net/AMR.79-82.1767

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 79-82Studies on Preparation and Property of 2.5D SiO2f/...

Studies on Preparation and Property of 2.5D SiO_2f/ SiO₂ Composites

Abstract:

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 °C. 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.

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Periodical:

Advanced Materials Research (Volumes 79-82)

Pages:

1767-1770

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.79-82.1767

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Online since:

August 2009

Authors:

Shu Ang Han, Kai Hui Jiang, Jun Wu Tang

Keywords:

2.5D SiO_2f/ SiO₂ Composites, Dielectric Property, Mechanical Property, Sol-Gel (SG)

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