Production method of quartz composite ceramic radome with polytetrafluoroethylene damp-proof coating

A polytetrafluoroethylene and moisture-proof coating technology, which is applied in the direction of the radiation unit cover, can solve the problems that the wave transmission performance of the quartz composite ceramic material cannot be significantly reduced, the thermal expansion coefficient of the coating and the substrate does not match, and the substrate material is damaged. Achieve the effects of shortening the product production cycle, improving the densification effect, and reducing the dosage

Active Publication Date: 2017-10-17
湖北三江航天江北机械工程有限公司
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AI Technical Summary

Problems solved by technology

[0004] (2) It has good dielectric properties and cannot significantly reduce the wave-transmitting performance of the quartz composite ceramic material;
[0007] Existing moisture-proof coatings generally use inorganic coatings, and the preparation

Method used

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Embodiment Construction

[0022] Below in conjunction with specific embodiment the present invention is described in further detail:

[0023] A method for preparing a quartz composite ceramic radome with a polytetrafluoroethylene moisture-proof coating on the surface, comprising the steps of:

[0024] Step 1: Put the quartz fiber profiling fabric into acetone for heating and soaking, then take out the quartz fiber profiling fabric for drying, after drying, bake the quartz fiber profiling fabric, and then put the quartz fiber profiling fabric on again Add acetone to heat and soak, and then dry again to form a surface-treated quartz fiber profiling fabric;

[0025] Step 2: Place the surface-treated quartz fiber profiling fabric in a stainless steel concentration tooling equipped with silica sol profiling, combine it through vacuum distillation and concentration, and finally dry and shape it;

[0026] Step 3: Place the dried and shaped quartz fiber profiling fabric blank in a profiling vacuum impregnatio...

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Abstract

The invention relates to a production method of a quartz composite ceramic radome with polytetrafluoroethylene damp-proof coating; the production method comprises the steps of pretreating quartz fiber profiled fabric; impregnating the quartz fiber profiled fabric, combining, and drying; subjecting the quartz fiber profiled fabric base to vacuum impregnating, concentrating, performing integrated compositing, and drying; subjecting the base to high-temperature thermal treatment, and performing machining. A polytetrafluoroethylene coating layer is formed on the surface of the radome. The PTFE (polytetrafluoroethylene) film formed on the surface of the quartz ceramic, bringing good low dielectric constant, continuous high vapor barrier performance, excellent high and low temperature stability, and high weatherability, can provide ultralow damp-proof performance for the storage of radomes and antenna windows for missile weapon systems in severe environments.

Description

technical field [0001] The invention relates to the technical field of radome moisture-proof coatings, in particular to a method for preparing a quartz composite ceramic radome with a polytetrafluoroethylene moisture-proof coating on the surface. Background technique [0002] The radome and antenna window are important components of the missile weapon system structure, and are the key components to protect the normal operation of the missile weapon system communication, telemetry, guidance, and detonation systems. They must have excellent wave penetration, heat release, load bearing, and weather resistance. A variety of functions. With the continuous development of missile weapon systems in the direction of supersonic speed and the continuous improvement of strike range and guidance accuracy, radome and antenna window should have good and stable wave transmission performance in a wider frequency band and better thermal shock resistance . Because of its high porosity, quart...

Claims

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Application Information

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IPC IPC(8): C04B35/14C04B35/82C04B35/622C04B41/83H01Q1/42
CPCC04B35/14C04B35/622C04B35/803C04B35/82C04B41/4846C04B41/83C04B2235/616H01Q1/42C04B41/4515C04B41/4523
Inventor 郭培江尹正帅吴广力王芬佘平江
Owner 湖北三江航天江北机械工程有限公司
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