Preparation method of high-performance sealing material applied to high-temperature environment

Abstract

The invention discloses a preparation method of a high-performance sealing material applied to a high-temperature environment, and belongs to the field of preparation of sealing materials. The preparation method of a high-performance sealing material applied to a high-temperature environment comprises the following steps: S1, putting hydrogenated butadiene-acrylonitrile rubber into an open mill for plastication; and S2, sequentially adding metal oxide, stearic acid, acrylate, carbon black, an anti-aging agent, a plasticizer, an anti-scorching agent, a vulcanizing agent and a vulcanizing aid into the open mill, and uniformly mixing the materials to obtain a rubber compound. According to the invention, various requirements of the sealing material for high temperature resistance, ozone resistance and resistance to corrosion of various chemicals can be realized. The excellent sealing material is prepared by adding various additives and accurately controlling the ratio of the raw materials,the product quality is further improved by finally carrying out two-stage vulcanization, and in addition, two pressing plates can be conveniently detached and cleaned or replaced in time by using theplate vulcanizing agent for vulcanization, so that the vulcanization effect is not influenced.

Description

technical field [0001] The invention relates to the field of sealing material preparation, more specifically, relates to a high-performance sealing material preparation method applied in a high-temperature environment. Background technique [0002] Gasket sealing occupies a very important position in modern industrial enterprises. The quality of sealing is directly related to the continuity of production, property safety, energy saving and environmental protection, and people's physical and mental health. Therefore, the development of gaskets has attracted more and more attention. . With the rise of modern industry, especially modern petroleum, chemical industry, atomic energy industry, and large-scale power stations, pressure vessels are developing in the direction of high temperature, high pressure, high vacuum, cryogenic, large-scale, and multi-series, and new requirements are constantly put forward for gasket sealing. , various new materials and new structures continue ...

AI Technical Summary

Problems solved by technology

[0003] In addition to oil resistance, rubber sealing materials also require heat resistance, ozone resistance and various chemical corrosion resistance. Traditional nitrile rubber can no longer meet the above requirements, and new materials are needed to replace them. The current sealing material preparation method The proportion of each raw material is different. If the specific gravity of hydrogenated nitrile rubber is not well controlled, it will directly affect the quality of the seal. In addition, the flat vulcanizing machine used in the preparation process also has many inconveniences, such as the upper and lower two for extrusion. The pressure plates are all fixed, and need to be cleaned or replaced after a long time of use, so the fixed pressure plate is particularly inconvenient to operate

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