Polytetrafluoroethylene

Polytetrafluoroethylene

Polytetrafluoroethylene (PTFE) is a synthetic fluoropolymer of tetrafluoroethylene. Being hydrophobic, non-wetting, high density and resistant to high temperatures, PTFE is an incredibly versatile material with a wide variety of applications, thought it’s perhaps best-known for its non-stick properties.

Polytetrafluoroethylene

Polytetrafluoroethylene

PTFE Fine Powder is a milky white polymer which is separated from a dispersion formed by emulsion polymerization. Having a molecular structure of only carbon and fluorine atoms – (CF2-CF2) n – POLYFLON PTFE Fine Powder possesses the lowest coefficient of friction and the most superior heat resistance, chemical resistance, electrical properties and non-sticking property of any plastics. PTFE Fine Powder readily absorbs organic solvents, resulting in the formation of a paste, it can be extruded easily. It is widely used for the manufacture of insulated electric wires, spaghetti tubes, thin rods and unsintered tape.

Polytetrafluoroethylene

Polytetrafluoroethylene

Properties of PTFE

Thermal Properties: PTFE can be used continuously at temperature up to 260° (500°F), and for short periods at even higher temperatures. It also possesses excellent low temperature strength. With these superior thermal properties, products such as electric or electronic machinery components, pipe linings, insulated electric wires, etc., made with PTFE Fine Powder are widely used.

Chemical properties: PTFE possesses the excellent property of almost absolute resistance to all commonly used chemicals. When used with some special chemicals under extremely severe conditions, such as fused alkali metals, high-temperature, high-pressure fluorine or trichlorofluorine gas, slight changes may occur. With ordinary acids, alkalis, and oxidants at high temperatures PTFE remains completely stable. Even contact with organic compounds does not cause dissolution or swelling. The basic reason for PTFE‘s extensive use in the chemical industry for pipe linings, wire-braid hoses, gaskets, tubes and bellows is in its chemical inertness.

Low abrasion and non-sticking property: Under ordinary conditions of use, PTFE possesses the lowest coefficient of friction of any solids. Moreover, its remarkable non-sticking property prevents most adhesive materials from adhering to it. Tubes made of PTFE Fine Powder are therefore used as transport tubes for liquid adhesives, cableway pipes, etc., for automobile and other mechanical industries, and other similar applications. In addition, unsintered tape made of PTFE Fine Powder, being extremely soft and malleable, forms tightly to the threads of bolts to provide an excellent sealing effect.

Applications of PTFE

PTFE is used extensively in many different industries:

Petrochemical and chemical processing: PTFE is the material of choice for gaskets, vessel linings, pump interiors, washers, rings, seals, spacers, dip tubes and well-drilling components because it is corrosion resistant and chemically inert; it is unaffected by virtually all acids and caustics and functions in environments to 500 degrees F.

Electrical applications: PTFE is one of the best insulators known. In thin sections, it will insulate to 500 volts per mil. There are grades of PTFE which have even greater dielectric strength. It is frequently used in wire and cable wrap, and to separate conductive surfaces in capacitors. Thick walled close-tolerance extruded tubing is the PTFE shape of choice where machining or drilling long lengths to close tolerances is impossible. Multi-hole tubing can be extruded. PTFE can be machined into standoff insulators, and many different types of high voltage encapsulation devices for electrical components.

Polytetrafluoroethylene

Electrical applications

Semi-Conductor Industry: PTFE is inert, and its operating temperature range is from minus 350 degrees Fahrenheit to 550 degrees Fahrenheit. When made to ultra pure standards it is the material of choice for various items used in chip manufacturing, including encapsulation devices for quartz heaters and many more.

Food, Beverage and Pharmaceutical industries: PTFE is approved by the Food and Drug Administration for use in the food, beverage, cosmetics and pharmaceutical industries. Thin Film and sheets make an inert, no-toxic slide surface without microscopic depressions where microbes can grow.

Polytetrafluoroethylene

Food, Beverage and Pharmaceutical industries

Laboratory applications: PTFE piping, tubing and vessels are used in various laboratory wares because of their chemical resistance, and inertness. No contaminants adhere to the surface.

Polytetrafluoroethylene

Laboratory applications

Bearing pads: Glass filled PTFE can be cut or stamped into bearing pads, and will resist all weather-related degradation while remaining an inert interface between disparate construction materials, like steel and concrete.

PTFE Compounds: Various fillers can be blended with the PTFE base resin to enhance certain properties, e.g. glass fiber, glass bead, carbon, graphite, molybdenum disulfide, bronze, etc.

PTFE does not melt; it cannot be molded into complex shapes, but must be machined. PTFE is easily machined using standard mechanical woodworking and stamping equipment and tooling. Most shapes are sold slightly oversized for easy trimming and machining to exact sizes.

polytetrafluoroethyleneContact Us for PTEF
From us, you can easily purchase polytetrafluoroethylene at great prices. Place online order and we will dispatch your order through DHL, FedEx, UPS. You can also request for a quote by mailing us at sales@nanoshel.com Contact: +1 302 268 6163 (US and Europe), Contact: +91-9779550077 (India). We invite you to contact us for further information about our company and our capabilities. At Nanoshel, we could be glad to be of service to you. We look forward to your suggestions and feedback.


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