Durable PTFE diaphragm piece

A technology of PTFE and diaphragm, which is applied in diaphragms, diaphragm valves, engine components, etc., can solve problems affecting service life and achieve long service life, excellent bending fatigue resistance, and improved bending resistance

Active Publication Date: 2016-09-28
YUDU HAIRUI SEALING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

PTFE diaphragms are widely used because of their excellent properties in heat resistance and chemical resistance, but the creep resistance and bending resistance of PTFE diaphragms affect their service life. How to further extend the service life of PTFE diaphragms It is a key technical issue to improve the product quality and market competitiveness of PTFE diaphragm

Method used

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  • Durable PTFE diaphragm piece

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A durable PTFE diaphragm is obtained by mixing 70 parts by mass of PTFE pellets and 30 parts by mass of PTFE micropowder, and then uniformly stirring, and then molding.

Embodiment 2

[0015] A durable PTFE diaphragm sheet is obtained by mixing 70 parts by mass of PTFE pellets and 30 parts by mass of PTFE micropowder, stirring uniformly, and then molding.

Embodiment 3

[0017] A durable PTFE diaphragm is obtained by mixing and stirring 90 parts by mass of PTFE pellets and 10 parts by mass of PTFE micropowder, and then molding.

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PUM

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Abstract

The invention discloses a durable PTFE diaphragm piece. The durable PTFE diaphragm piece is obtained in the manner that by mass, 70-90 parts of PTFE particles and 10-30 parts of PTFE micro powder are mixed and stirred uniformly, and then compression molding is performed. The particle size of the PTFE particles is 100-500 microns, and the particle size of the PTFE micro powder is 0.5-1.5 microns. According to the durable PTFE diaphragm piece, outstanding characteristics of heat resistance, chemical resistance and the like of common PTFE are reserved, and a great improvement is achieved in the aspects of creep resistance, bending resistance and the like. The original density of the PTFE micro powder adopted by the durable PTFE diaphragm piece is changed, the density is reduced, the flexibility of the diaphragm piece is changed to be higher, and the bending resistant capacity is higher.

Description

technical field [0001] The invention belongs to the technical field of diaphragm sheets, and in particular relates to a PTFE diaphragm sheet with longer service life. Background technique [0002] Diaphragms are widely used in various specifications of diaphragm valves at home and abroad. The diaphragm separates the lower body cavity of the diaphragm valve from the upper bonnet cavity, so that the valve stem, valve cover and other parts above the diaphragm are not corroded by the medium , the packing sealing structure is omitted, and the medium leakage will not occur. It is used in fermentation tanks, preparation tanks, filling machines, sterile filters, water making equipment, PW, WFI transportation and distribution, aseptic fluid transportation, CIP, SIP, etc. The working principle of pneumatic diaphragm valve is widely used in biological medicine, food and beverage, fluid equipment, cosmetics and other industries. Diaphragm valves are suitable for switching and throttli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K7/12
CPCF16K7/12
Inventor 黄小华
Owner YUDU HAIRUI SEALING TECH CO LTD
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