A formulation of semiconductor surface electrothermal coat and making method thereof

Abstract

A formula of semiconductor surface electric heating coating an preparation method thereof, which is composed of (by weight) 60-70 % of tin tetrachloride, 10-15 % of copper carbonate, 10-15 % of graphite, 5-8 % boric acid, 2-3 % of antimonous chloride etc, the preparation contains 1, mixing above mentioned compositions and pulverizing into powder, added with absolute ethyl alcohol and terpineol, agitating into uniform emulsify slurry, 2, pretreating insulation base unit component and drying, 3, spraying slurry to surface of insulation base unit surface, solidifying in furnace at 400-600 degree centigrade, insulation for 15-20 minute, then cooling in furnace.

Description

technical field [0001] The invention relates to a formula of an electrothermal coating on a semiconductor surface and a manufacturing method thereof, which relates to the improvement of the formula and processing technology of the electrothermal coating on a semiconductor surface in the existing manufacturing method, and improves the performance of the electrothermal coating on a semiconductor surface. Background technique [0002] With the development of electrothermal film technology, the manufacturing methods of electrothermal film can be roughly divided into two types. One is mainly to use graphite or carbon fiber materials to process and manufacture electrothermal film or electric heating elements. The processing method of electrothermal film is to combine graphite carbon powder with solidified agent and flame retardant are mixed and then coated on the insulating material and cured. The electrothermal film manufactured by this method has the advantages of good oxidation ...

AI Technical Summary

Problems solved by technology

[0002] With the development of electrothermal film technology, the manufacturing methods of electrothermal film can be roughly divided into two types. One is mainly to use graphite or carbon fiber materials to process and manufacture electrothermal film or electric heating elements. The processing method of electrothermal film is to combine graphite carbon powder with solidified agent and flame retardant are mixed and then coated on the insulating material and cured. The electrothermal film manufactured by this method has the advantages of good oxidation resistance, stable thermal power, simple processing technology, and long service life. However, due to the carbon element The thermal power of itself is poor, and it cannot meet the requirements of high power, so its application field and scope are greatly limited.

Another method is to use semiconductor perchloride (SnCl 4 ) is dissolved in an organic solvent, added a reducing agent, and sprayed on the insulating base material at high temperature to form an electric heating film. Although it realizes a high-power electric heating film, its power attenuation is often relatively large during use. In addition, during its processing, due to the difficulty in ensuring the stability of metal oxides at high temperatures, the consistency and reliability of its products are difficult to quantify.

Moreover, since the membrane liquid is directly sprayed on the high-temperature substrate material, most of the harmful gas of the free membrane liquid mixture will be discharged, causing direct pollution to the operator and the environment.