Efficient preparation device and preparation method of high-performance wave-absorbing material

Abstract

The invention relates to a preparation method of a wave-absorbing material. An adopted device is characterized by being provided with a graphite container, a high-temperature-resistant heating pipe and an induction heating part, wherein the graphite container is arranged in the high-temperature-resistant heating pipe, the induction heating part is arranged on the outer side of the high-temperature-resistant heating pipe, the high-temperature-resistant heating pipe is connected with a vacuum pump and / or an inert gas source through a gas guide pipe. The preparation method comprises the followingsteps: 1, taking silicon carbide fibers and ferrocene, wherein the mass amount of ferrocene powder is equal to or larger than 1 / 2 of that of the silicon carbide fibers; 2, putting ferrocene powder and silicon carbide fibers into the graphite container, and closing the graphite container with a box cover; 3, putting the graphite container into the high-temperature-resistant heating pipe, and closing the high-temperature-resistant heating pipe with a sealing cover to form a sealed reaction space in the high-temperature-resistant heating pipe; 4, turning on the vacuum pump for vacuumizing the high-temperature-resistant heating pipe and the graphite box; and 5, turning on an induction heating coil for induction heating. The method has the advantages of high safety, low production cost and thelike.

Description

technical field [0001] The invention relates to a preparation method of a wave-absorbing material, in particular, a high-efficiency preparation method of a high-performance wave-absorbing material. Background technique [0002] Although the development of electromagnetic technology has brought great convenience to human beings, there are also some problems. Electromagnetic interference will affect the normal work of some electronic equipment, and electromagnetic pollution will bring non-negligible harm to the ecological environment and human health. Therefore, it is necessary to develop wave-absorbing materials to reduce the adverse effects of electromagnetic waves. In addition, as an important part of modern military technology, stealth technology has attracted more and more attention from various countries. The development of high-performance absorbing materials is the key to solving the stealth problem. [0003] Silicon carbide fiber is a high-performance reinforced cera...

AI Technical Summary

Problems solved by technology

[0005] Traditional chemical vapor deposition methods usually use metal catalysts. For metal catalysts, such as iron, cobalt, and nickel, the amount of catalyst is very small. If pure metal particles are directly added, it is difficult to mix evenly, especially for substrates such as fibers. There are very few catalyst particles that can be attached to the surface of the fiber. Therefore, chemical plating, dipping, spraying, deposition and other methods are generally used to attach pure metal catalysts. Heating with an electric furnace requires a long heating and holding time.

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