Special modified high and low temperature resistant sealing part material produced by polytetrafluoroethylene regeneration method, sealing part and preparation method thereof

Abstract

The invention provides a special modified high and low temperature resistant sealing part material produced by a polytetrafluoroethylene regeneration method, which consists of regenerative polytetrafluoroethylene powder processed by special step, high-temperature magnesium oxide and alkali-free glass fiber powder. A sealing part formed by processing the material has good high and low temperature resistant performance and can keep good using performance within the range of -220 DEG C-+350 DEG C, thereby not only keeping the unique chemical stability of the polytetrafluoroethylene, but also keeping the toughness and the broad operatability of a high temperature resistant and micro-fibrous internal unchanged structure of the material; furthermore, the sealing part also has the advantage of super-strong sealing property, wear resistance and lubricity, so that the range of applications is wider. The material can not only be used in the sealing field, but also be used in matching energy conservation and emission reduction of solar energy manufacturing industry, as well as equipment of military industry.

Description

A special modified high and low temperature resistant seal material produced by polytetrafluoroethylene regeneration method, its seal and its preparation method technical field The invention relates to a polytetrafluoroethylene sealing material, in particular to a specially modified high and low temperature resistant sealing material produced by a polytetrafluoroethylene regeneration method, the sealing and its preparation method. Background technique Seals are an essential part in the transmission process. The products are mainly used for supporting connections in large industries, and are widely used in aviation, petrochemical, chemical fiber textiles, machinery, metallurgy and mining and other fields. With the rapid development of modern industrial technology, the requirements for the equipment operating under special working conditions to be equipped with seals with high and low temperature resistance are getting higher and higher. Such as: Petroleum, chemical industry...

AI Technical Summary

Problems solved by technology

Although the initial process can obtain regenerated tetrafluoroethylene powder and products, there are still deficiencies in the production process and product quality: 1) the fineness of the powder is not enough, generally only reaches about 160 mesh; 2) tetrafluoroethylene waste The oil stains and stains in it cannot be resolved cleanly, which seriously restricts the scope of use, and it is impossible to manufacture special high-end products

3) The pollution sources and pollutants generated in the production process cannot be decomposed and cleaned, let alone the manufacture of high-grade, high-performance, multi-variety and high-efficiency new material products, because the production process equipment cannot remove stains to a certain degree of cleanliness ; 4) The production process is more complicated, the labor input is large, and the cost of milling will be increased by more than 50% compared with the existing research and development products, and it cannot be made into a high-grade seal material product with high and low temperature resistance

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