Rapid prototyping method of special-shaped quartz composite ceramic wave-transparent antenna window

A technology of composite ceramics and molding methods, which is applied in the direction of the radiation unit cover, etc., can solve the problems of high cost, long process cycle, and difficulty in imitation molding of special-shaped parts, etc., and achieve high molding efficiency, low process cost, and strong designability Effect

Active Publication Date: 2021-08-31
湖北三江航天江北机械工程有限公司
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

This method has high cost and long process cycle, and it is not easy to carry out the imitation molding of special-shaped parts

Method used

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  • Rapid prototyping method of special-shaped quartz composite ceramic wave-transparent antenna window
  • Rapid prototyping method of special-shaped quartz composite ceramic wave-transparent antenna window

Examples

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Embodiment Construction

[0024] Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail:

[0025] Embodiment, a special-shaped quartz composite ceramic wave-transparent antenna window rapid prototyping method, such as figure 1 and 2, the steps are as follows:

[0026] Step 1: Take 1kg of B-type quartz fiber cloth (satin cloth, 0.28mm, no twist), spread it on the upper layer of the water bath kettle, steam it for 15 hours, then dry it at 100°C for 3 hours, put it in a heat treatment furnace, and Oxygen heat treatment to remove sizing agent;

[0027] Step 2: Soak the pretreated quartz fiber cloth in 10% silica sol (more than 80% of the colloidal particles with a particle size below 100mm) for 1.5h, then let it air at room temperature for 15h, and then dry it at 120°C. Then cut or equivalent area size at 20mm 2 ~50mm 2 fiber cloth.

[0028] Step 3: Soak the fiber cloth in silica sol with a solid content of 65% for 1h to 2h, spread the dippe...

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Abstract

The invention discloses a rapid prototyping method for a special-shaped quartz composite ceramic wave-transparent antenna window. The steps are as follows: 1. Remove the wetting agent on the surface of the quartz fiber by combining steam cooking and oxygen heat treatment; 2. Pretreated the quartz fiber The cloth is surface treated in low solids silica sol. The cutting equivalent area is 5mm 2 ~100mm 2 fiber cloth. 3. Dip the fiber cloth in the high-solid content silica sol, and then lay it on the special pressure setting tool for pressure setting, curing and demoulding. 4. Dip the pressed billet in the silica sol for one round, and heat treatment at 850°C. Processed to the design size as required. The method can realize rapid prototyping, high efficiency, low process cost and uniform material.

Description

technical field [0001] The invention relates to the technical field of ceramic-based wave-transparent composite materials, in particular to a method for rapid prototyping of special-shaped quartz composite ceramic wave-transparent antenna windows. [0002] technical background [0003] As a communication window for controlling missiles, the antenna window is a key component to ensure the normal operation of the radar system. With the development of aerospace technology, the aerodynamic shape of the aircraft presents a special-shaped structure, and the antenna window with wave-transmitting, heat-insulating, and load-bearing functions also shows a development trend of special-shaped structures. High Mach number aircraft mostly use ceramic-based wave-transmitting materials, among which, quartz fiber-reinforced quartz composite ceramic materials are the most widely used. The traditional molding method of quartz composite ceramic antenna window is mostly weaving quartz fiber into...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/42C04B35/80C04B35/14C04B35/624
CPCC04B35/803C04B35/14C04B35/624C04B2235/6567C04B2235/661
Inventor 吴广力邓德凤王芬刘义华曾建军王宇锋
Owner 湖北三江航天江北机械工程有限公司
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