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PTFE tape used for different sized fittings PTFE tape for natural gas. There are two US standards for determining the quality of any thread seal tape. MIL-T-27730A (an obsolete military specification still commonly used in industry in the US) requires a minimum thickness of 3.5 mils and a minimum PTFE purity of 99%. [3]
Some PTFE parts are made by cold-moulding, a form of compression molding. [44] Here, fine powdered PTFE is forced into a mould under high pressure (10–100 MPa). [ 44 ] After a settling period, lasting from minutes to days, the mould is heated at 360 to 380 °C (680 to 716 °F), [ 44 ] allowing the fine particles to fuse ( sinter ) into a ...
Polytetrafluoroethylene (PTFE), better known by its trade name Teflon, has many desirable properties which make it an attractive material for numerous industries. It has good chemical resistance, a low dielectric constant, low dielectric loss, and a low coefficient of friction, making it ideal for reactor linings, circuit boards, and kitchen utensils, to name a few applications.
Fluorinated ethylene propylene (FEP) is a copolymer of hexafluoropropylene and tetrafluoroethylene.It differs from the polytetrafluoroethylene (PTFE) resins in that it is melt-processable using conventional injection molding and screw extrusion techniques. [2]
Electrical tape (or insulating tape) is a type of pressure-sensitive tape used to insulate electrical wires and other materials that conduct electricity. It can be made of many plastics but PVC (polyvinyl chloride, "vinyl") is the most popular, as it stretches well and gives effective and long-lasting insulation.
PCTFE is a homopolymer of chlorotrifluoroethylene (CTFE), whereas PTFE is a homopolymer of tetrafluoroethylene. The monomers of the former differs from that of latter structurally by having a chlorine atom replacing one of the fluorine atoms. Hence each repeating unit of PCTFE have a chlorine atom in place of a fluorine atom.
A 72-year-old California woman has sued Home Depot for age discrimination and wrongful termination after the retail giant fired her for failing to stop $5,000 in fraudulent transactions.
Useful comparison tables of PTFE against FEP, PFA and ETFE can be found on Chemours' website, listing the mechanical, thermal, chemical and electrical properties of each, side by side. [1] ETFE is effectively the high-strength version of the other three in this group. ETFE film is self-cleaning (due to its nonstick properties) and recyclable. [2]
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