PTFE, PFA, FEP, PVDF Fluoroplastic products industry experts
The characteristics of "plastic king" PTFE (PTFE) PTFE gasket
Classification:
Industry dynamics
Author:
PFA tube little sister
Source:
Dankai
Release time:
2022-11-12
Visits:
Teflon gasket, also known as PTFE gasket, is to use PTFE resin to add a certain amount of filler, such as glass fiber, bronze powder, molybdenum disulfide, graphite, carbon fiber, etc., by high-speed mixing
Uniformity after the use of mold pressing molding, and then by high temperature sintering into gaskets and other products or first pressed into PTFE plate after stamping or cutting molding. Filled PTFE gasket due to the addition of PTFE products.
Into a certain amount of filler, thus greatly improving some of the characteristics of PTFE, especially wear resistance, thermal conductivity, resistance to waxy change, self-lubrication and other aspects than pure PTFE products have a more obvious change.
Good. Suitable for -180 ℃ ~ 250 ℃ temperature range of corrosion resistance, heat conduction, wear resistance, oil-free lubrication, shock absorption and wear resistance seal lubrication conduction parts.
In order to meet the needs of customers for high quality PTFE gaskets, we have introduced some foreign famous brands of expanded PTFE gasket materials with excellent performance, such as Gore,Garlock, Valqua,TEMAC, etc.
The company has GB2506-89, GB/T17727, HG/T20627, HG/T20606 and other standards. All kinds of PTFE gasket molds are welcome to inquire about PTFE molds.
Pressure forming gasket requires a thickness of more than 2mm.
Figure 1: PTFE gasket Source: Dankai
PTFE gasket performance characteristics: (filled) PTFE performance and filling material performance, content and preparation process are closely related.
The filler must meet:(1) the filler is stable under the sintering condition of 380-400 ℃;(2) the particle size of the filler is 150 μm;(3) the filler will not absorb moisture;(4) under the sintering condition, the filler
It does not cluster by itself;(5) The filler does not react with PTFE.
Figure 2: PTFE Gasket Source: Dankai
Commonly used fillers: graphite, molybdenum disulfide, ceramic particles/fibers, carbon fiber (CF), glass beads and glass fibers (GF), quartz, barium sulfate, etc.
1. Improve cold flow resistance and creep resistance: filled with graphite, glass beads and glass fiber (GF, polyphenylene sulfide.
2. Improve lubricity: filled with MoS2,
Figure 3: PTFE Gasket Source: Dankai
3. Improve thermal conductivity: filled with bronze powder, molybdenum, nickel, etc., carbon fiber.
4. Improve wear resistance: filled with glass beads and glass fiber (GF), polyimide, polystyrene.
5. Improve stability and reduce deformation: carbon fiber, polyphenylene sulfide.
PTFE gasket use industry: chemical, petrochemical, oil refining, chlor-alkali, acid, phosphate fertilizer, pharmaceutical, pesticide, chemical fiber, dyeing, coking, gas, organic synthesis, non-ferrous smelting, iron and steel, atomic energy and high
Pure product production (such as ion membrane electrolysis), viscous material transportation and operation, health requirements are highly stringent food, beverage and other processing and production departments.
Use of equipment: pipes, valves, pumps, pressure vessels, heat exchangers, condensers, generators, air compressors, exhaust pipes, refrigerators and other sealing parts of the flange connection.
This article is originally created by Teflon's little sister. Welcome to pay attention and take you to grow knowledge together!
Key words:
Gasket, PTFE, ptfe, carbon fiber, performance, corrosion resistance, thermal conductivity
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