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Preparation method for tungsten disulfide

A technology of tungsten disulfide and ammonium trisulfide, which is applied in chemical instruments and methods, tungsten compounds, inorganic chemistry, etc., can solve the problems of cumbersome process flow, environmental pollution, complexity, etc., achieve short preparation process flow, reduce pollution, and use The effect of simple equipment

Active Publication Date: 2013-12-04
深圳市威勒科技股份有限公司
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Problems solved by technology

[0008] The existing technological process for manufacturing tungsten disulfide is not only very cumbersome and complicated, but also requires multiple chemical reactions, and after the chemical reactions, a large amount of hydrogen sulfide and ammonia are produced, which seriously pollute the environment and damage human health. Dealing with difficulties

Method used

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Embodiment Construction

[0026] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0027] The invention relates to a preparation method of tungsten disulfide, which comprises mixing solid powdery tungstic acid and ammonium trisulfide solution with a concentration of 25%-30% to obtain a mixture, in which tungsten The weight ratio of acid powder to ammonium trisulfide solution is 1:5.9 to 1:6.0;

[0028] Put the mixture into the vulcanization equipment for vacuuming. After the vacuuming is completed, perform the first-stage heating in the vulcanization equipment according to the first heating temperature and the first heating duration; the first heating temperature is: 700 degrees Celsius, the first ...

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Abstract

The invention relates to the technical field of compound preparation and in particular to a preparation method for tungsten disulfide. The preparation method comprises the following steps: uniformly mixing tungstic acid with an ammonium trisulfide solution to obtain a mixture; putting the mixture into vulcanization equipment, vacuumizing, and heating in the vulcanization equipment at first stage for 50-70 minutes at the temperature of 650-750 DEG C; heating at second stage for 110-130 minutes at the temperature of 1350-1400 DEG C to obtain tungsten disulfide. According to the preparation method, the process is short, the used equipment is simple, and the environmental pollution is alleviated at the same time.

Description

technical field [0001] The invention relates to the technical field of compound preparation, in particular to a preparation method of tungsten disulfide. Background technique [0002] Tungsten disulfide was first used by the United States to lubricate the key parts of the Mariner spacecraft from 1962 to 1971. It achieved excellent results, and then began to be used in the industrial field, but only in aerospace, aviation industry and defense industry Until 1984, MSC Company of the United States introduced tungsten disulfide lubrication technology into the general industrial lubrication field, and tungsten disulfide was quickly promoted due to its excellent lubricating properties. Tungsten disulfide is an excellent dry film lubricant, which solves the problem of surface wear of the product well. Products treated with tungsten disulfide can achieve a qualitative leap in performance and greatly increase the added value of the product. [0003] Moreover, tungsten disulfide is a...

Claims

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Application Information

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IPC IPC(8): C01G41/00
Inventor 顾进跃袁克艳梁铁山
Owner 深圳市威勒科技股份有限公司
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