Material advantages of PTFE sheet

Update:01 Mar 2019
Summary:

High temperature resistance - use working temperature u […]

High temperature resistance - use working temperature up to 250 °C.
Low temperature resistance - good mechanical toughness; 5% elongation even at temperatures down to -196 °C.
Corrosion resistance - It is inert to most chemicals and solvents, resistant to strong acids and alkalis, water and various organic solvents.
Weather resistant - the best aging life in plastics.
Highly lubricated – the lowest coefficient of friction in solid materials.
Non-adhesive - is the smallest surface tension in solid materials, does not adhere to any substance, mechanical properties, its friction coefficient is very small, only 1 / 5 of polyethylene, which is an important feature of the perfluorocarbon surface. Moreover, since the intermolecular force of the fluorine-carbon chain is extremely low, the polytetrafluoroethylene has no stickiness.
Non-toxic - physiologically inert, long-term implantation of artificial blood vessels and organs without adverse reactions.
Electrical Properties Polytetrafluoroethylene has low dielectric constant and dielectric loss over a wide frequency range, and high breakdown voltage, volume resistivity, and arc resistance.
Radiation resistance PTFE has poor radiation resistance (104 rad), which is degraded by high-energy radiation, and the electrical and mechanical properties of the polymer are significantly reduced. The application of polytetrafluoroethylene can be carried out by compression or extrusion; it can also be made into an aqueous dispersion for coating, impregnation or fiber making. PTFE is widely used in high-temperature, corrosion-resistant materials, insulating materials, anti-adhesive coatings, etc. in the atomic energy, aerospace, electronics, electrical, chemical, machinery, instrumentation, instrumentation, construction, textile, food and other industries.
Weathering resistance: Irradiation resistance and low permeability: long-term exposure to the atmosphere, surface and performance remain unchanged.
Non-combustibility: The oxygen limit is below 90.
Acid and alkali resistance: insoluble in strong acids, strong bases and organic solvents.
Oxidation resistance: It can resist the corrosion of strong oxidants.
Acidity and alkalinity: Neutral.
The mechanical properties of PTFE are relatively soft. Has a very low surface energy.
Polytetrafluoroethylene (F4, PTFE) has a series of excellent performance: high temperature resistance - long-term use temperature of 200 ~ 260 degrees, low temperature resistance - still soft at -100 degrees; corrosion resistance - resistant to aqua regia and all organic solvents; Weather resistance - the best aging life in plastics; high lubrication - has the smallest coefficient of friction (0.04) in plastics; non-sticky - has the smallest surface tension in solid materials without adhering to any substance; non-toxic - physiologically inert; Excellent electrical properties, ideal for Class C insulation.

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