Foam glass-based composite radar absorbing material and preparation method thereof

A technology of radar absorbing materials and foam glass, applied in chemical instruments and methods, and other chemical processes, can solve problems such as low product purity and difficulty in process control, and achieve simple and easy operation, easy access to raw materials, and reduction of electromagnetic waves Effects of Radiation Contamination

Inactive Publication Date: 2011-03-16
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This design only uses the external loss material to achieve the absorbing effect, and uses cullet, although it saves cost, it is easy to cause the product purity is not high and the process control is difficult

Method used

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  • Foam glass-based composite radar absorbing material and preparation method thereof
  • Foam glass-based composite radar absorbing material and preparation method thereof
  • Foam glass-based composite radar absorbing material and preparation method thereof

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Embodiment Construction

[0032] The technical solutions of the present invention will be further described below in conjunction with specific embodiments.

[0033]

[0034] The above-mentioned embodiments are prepared by the preparation method of the present invention. First, the corresponding raw materials are weighed according to the formula ratio, and then mixed evenly and finely ground to obtain the material to be fired. The dry grinding method can also be adopted, and the mixed material is wet ground with water as the ball milling medium, and the mixed material is fully mixed. The amount of balls to be added is based on the mass ratio of materials to be fired: grinding balls is 1:2, and the ball is milled at a speed of 600r / min for 3 hours. When the obtained slurry is heated and dried in a drying oven, the formation of slurry agglomeration should be prevented. , the mixture should be turned and smashed from time to time, and finally passed through a 140-mesh sieve, and the uniformly mixed mate...

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Abstract

The invention discloses a foam glass-based composite radar absorbing material and a preparation method thereof. The method comprises the following steps of: adding zinc powder and manganese dioxide into borosilicate foam glass, evaporating the zinc powder at high temperature, and reacting the evaporated zinc powder with oxygen so as to generate zinc oxide in the foam glass in situ. In the method,the needed raw materials are readily available, the cost is lower, the operation process is simple, the material is baked by a powder fusion method, the preparation temperature is low, and the formula is high in stability and reliability. The prepared absorbing material has excellent performance of absorbing electromagnetic waves, is applied to radiation-proof buildings, microwave heating, electromagnetic shielding of electronic equipment and the like, and also can be applied in the fields such as ground fortification anti-radar detection and resistance to electromagnetic interference militarily, microwave unreflected chambers and the like to reduce the electromagnetic radiation pollution.

Description

[0001] technical field [0002] The invention relates to a material for absorbing electromagnetic waves and a preparation method thereof, in particular to a composite radar wave-absorbing material based on foam glass and a preparation method thereof. [0003] Background technique [0004] Foam glass was first developed by France in 1935. It is made by mixing glass powder and foaming agent, heating and melting, and then foaming and annealing. Foam glass is an inorganic material containing many connected or closed tiny pores inside. It has the characteristics of light weight, multi-function, easy doping and modification. Foam glass is divided into two types: open cell and closed cell according to the shape of the hole: open cell foam glass has sound absorption effect and is used as sound absorption material. Closed-cell foam glass has heat insulation effect and is used as insulation material. [0005] Radar absorbing materials, also known as radar stealth or camouflage mate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/00C03C11/00
Inventor 李秀华陈阔吕东升
Owner TIANJIN UNIV
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