Ptfe has good comprehensive performance, high temperature resistance, corrosion resistance, not sticky, self-lubricating, exnt dielectric properties, low friction coefficient. Ptfe has exnt chemical stability, high corrosion resistance, sealing, lubrication is not sticky, electric insulation and good anti-aging resistance force. At + 250 ℃ to 180 ℃ under the temperature of working for a long time, in addition to the molten metal liquid and sodium fluoride, all other chemicals, boil in aqua regia doesn't change. PTFE engineering plastic, can be made into PTFE tube, rod, belt, plate, film, etc. Generally applied to the performance requirements of high resistance to corrosion of pipentainers, pump, valve and radar, high frequency communications equipment, radio equipment, etc. Dispersion can be used for various materials impregnated liquid and anticorrosive layer on the surface of the metal, glass, ceramics, etc. All kinds of ptfe ring, ptfe gasket, ptfe is widely used in all kinds of anticorrosion pipe flange seal packing, etc.
High temperature resistance:
Low temperature resistant:
Nonhazardous:
Mechanical properties, adhesion:
Smooth is unusual, even ice than it is, however, is the smallest, the surface tension of the solid materials don't adhere to any material. It's very small friction coefficient, is only 1/5 of the polyethylene, this is one of the most important characteristics in fluorine carbon surface. And the very low fluorine - carbon chain molecular inter-atomic forces, so the ptfe has not sticky.
Insulation performance:
Thick a layer of thin film, to withstand the high voltage of 1500 v.
Resistance to chemical corrosion and weather resistance:
In addition to the molten alkali metals, ptfe almost without any chemical corrosion. In concentrated sulfuric acid, nitric acid, hydrochloric acid, for example, even in aqua regia to boil, its weight and performance are no change, almost insoluble in all solvents, only at above 300 ℃ is slightly soluble in total alkane (0.1 g / 100 g).
Exnt weatherability :
Don't absorption of moisture, non-combustible, for oxygen and ultraviolet radiation are very stable, with a plastic aging the best life.
electrical property:
Ptfe in a wider frequency range of the dielectric constant and dielectric loss are very low, and the breakdown voltage, high volume resistivity and electric arc resistance.
Radiation resistance :
Poor radiation resistant properties of ptfe (104 rads), caused by high-energy radiation degradation, electrical and mechanical properties of polymer were markedly reduced.
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