Polytetrafluoroethylene sealing belt

A polytetrafluoroethylene and sealing tape technology, applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problems of not fully meeting the requirements of sealing surface sealing, insufficient tensile strength, etc., and achieve enhanced compressive performance, The effect of improving strength and improving performance

Inactive Publication Date: 2014-10-29
镇江春环密封件集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current PTFE sealing tape is mainly a simple PTFE body, and its tensile strength is still insufficient, which cannot fully meet the sealing requirements of various sealing surfaces.

Method used

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  • Polytetrafluoroethylene sealing belt
  • Polytetrafluoroethylene sealing belt

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with accompanying drawing.

[0016] As shown in the figure, a polytetrafluoroethylene sealing tape of the present invention includes a tape body, wherein, the tape body is respectively a surface layer 1 processed from expanded polytetrafluoroethylene from the outside to the inside, and is made of rubber compound The elastic layer 2 and the fiber layer 3 are composed; the fiber layer 3 is composed of carbon fibers; the fiber layer 3 is formed by tightly pressing at least 3 layers of carbon fibers, and the fiber layer 3 and the elastic The joints of the layer 2 are filled with carbon fiber particles 4, and the particle size of the carbon fiber particles 4 is 55-95 microns; the ratio of the thickness H1 of the surface layer 1, the thickness H2 of the elastic layer 2 to the thickness H3 of the fiber layer 3 is 4:5: 3. The elastic layer 2 can be composed of one or more kinds of rubber, such as: nitrile rubb...

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Abstract

The invention discloses a polytetrafluoroethylene sealing belt. A belt body is composed of a surface layer, an elastic layer and a fiber layer from outside to inside, the surface layer is made of expanded polytetrafluoroethylene in a machined mode, and the elastic layer is made of rubber in a composite mode. The fiber layer is made of carbon fibers and formed by at least three layers of carbon fibers in a tight press-fitting mode, the connection position of the fiber layer and the elastic layer is filled with carbon fiber particles in a distributed mode, the size of the carbon fiber particles is 55 micrometers to 95 micrometers, and the ratio of the thickness H1 of the surface layer to the thickness H2 of the elastic layer to the thickness H3 of the fiber layer is 4:5:3. Through the layer-by-layer function of the surface layer, the elastic layer and the fiber layer, the toughness, the retraction elasticity, the tensile strength and the compressive strength of the polytetrafluoroethylene sealing belt can be greatly improved, and the use performance of the polytetrafluoroethylene sealing belt can be greatly improved.

Description

technical field [0001] The invention relates to a sealing tape, in particular to a polytetrafluoroethylene sealing tape. Background technique [0002] PTFE sealing tape is a very novel and unique sealing packing made of PTFE dispersed resin through a unique processing technology. The product has good flexibility, compression resilience, creep resistance, high resistance Low temperature and excellent corrosion resistance, no aging, self-lubricating properties. Because of its excellent sealing performance and extremely convenient installation and use, it has become an indispensable sealing material in chemical, pharmaceutical, petrochemical, food and beverage, electronics, electric power, metallurgy, shipbuilding and other industries. The current polytetrafluoroethylene sealing tape is mainly a simple polytetrafluoroethylene body, and its tensile strength is still insufficient, so it cannot fully meet the requirements for sealing various sealing surfaces. Contents of the in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/00
Inventor 刘晓芳
Owner 镇江春环密封件集团有限公司
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