A kind of highly transparent porous quartz/quartz ceramic matrix composite material and its preparation method

Abstract

The invention discloses a high-wave-transparent porous quartz / quartz ceramic-based composite material and a preparation method thereof. The composite material comprises a quartz fiber-reinforced body, a quartz base body and pores, and is characterized in that the pores are uniformly existent in the part of the composite material, close to the inner surface. Pure iron wires are prefabricated in a reinforced structure formed by weaving or stacking quartz fibers, a quartz-based composite material is synthesized through a sol-gel method, and the iron wires in the composite material are etched off by a mixed solution of nitric acid and sulfuric acid to obtain the high-wave-transparent porous quartz / quartz ceramic-based composite material. The composite material has the advantages of high strength and good mechanical property and wave transmittance.

Description

Technical field

[0001] The invention relates to a quartz / quartz ceramic matrix composite material and a preparation method thereof, in particular to a high-wave-transmitting porous quartz / quartz ceramic matrix composite material and a preparation method thereof. technical background

[0002] In the past 20 years, precision guidance technology has been rapidly developed under the demand for precision guidance aircraft. In order to improve the anti-electromagnetic interference capability and guidance accuracy of precision guided aircraft, its electromagnetic window / cover material is required to still have good wave transmission performance at high temperatures, that is, it is required to have good high temperature resistance, ablation resistance, impact resistance, and heat resistance. Shock and mechanical properties and dielectric properties. Quartz fiber reinforced quartz matrix (SiO 2f / SiO 2 ) Composite material, with the characteristics of high temperature resistance, low die...

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