关键词: 雷达天线罩, 石英纤维, 复合材料, 高温性能

Abstract:

The tensile property,high-temperature resistance and dielectric property of silicone resin/silica fiber composites were studied.Results showed that pretreatment methods of fiber had important influence on the tensile property of fiber and composites.Agent on the surface of fiber could be removed completely by way of dipping in tol- uene and then heating at 350℃for 400 seconds,meanwhile keeping an acceptable tensile strength of silica fiber. The composites could keep excellent mechanical and dielectric properties after high temperature heat treatment.The tensile strength of the composites was over 360MPa and the dielectric constant was below 3.30,which met the re- quirements of antenna mask.

Key words: antenna mask, silica fibers, composites, high temperature properties