Composite sealing material and manufacturing method thereof

Abstract

The invention discloses a novel sealing material, which consists of a core plate and elastic membrane layers compounded on two sides of the core plate, wherein the core plate a metal or non-metal core plate after surface treatment; the elastic membrane layers are prepared from elastic foaming materials or non-foaming materials which are compounded on the surfaces of the core plate in a mechanical or chemical mode to form the membrane layers. The sealing material has the advantages of simple structure, excellent compression resilience, wonderful long-term pressurization sealability, very low creep relaxation performance, long service life and wonderful conformability with a sealing surface.

Description

technical field [0001] The patent of the present invention relates to a sealing material and its manufacturing method, in particular to a sealing material made of composite non-metallic material and metal or non-metal and its manufacturing method. Background technique [0002] In various mechanical, chemical, metallurgical, transportation and pharmaceutical devices and equipment, in order to prevent the leakage of liquid or gas and other media, it is necessary to provide seals at the connection of equipment or pipelines to ensure that the connection is leak-free. For this reason, various materials are generally used as sealing elements, commonly used include various rubber sealing materials, flexible graphite materials, polytetrafluoroethylene materials and various metal-non-metal composite materials. These sealing materials have certain advantages and disadvantages. For example, rubber sealing materials and polytetrafluoroethylene materials have good sealing effects, but ha...

AI Technical Summary

Problems solved by technology

These sealing materials have certain advantages and disadvantages. For example, rubber sealing materials and polytetrafluoroethylene materials have good sealing effects, but have poor creep and relaxation resistance, poor long-term sealing effect and service life; flexible graphite sealing effects and creep resistance The relaxation effect is better, but it has certain pollution to the medium and equipment, and it is inconvenient to process and install; the existing metal-non-metallic gaskets generally have better sealing effect and service life, but require higher sealing specific pressure, it is difficult to apply to the sealing requirements of motor vehicles, equipment, fiberglass or plastic devices and pipelines

Images