Polytetrafluoroethylene (PTEE), which has more excellent chemical properties and chemical stability than other plastics, is the most ideal material for saving and making up for non-ferrous metals and various metal metals that cannot solve corrosion protection and sealing. Its characteristics are:
First, the use of a wide temperature: can be used in the high temperature range of -200 ~ +250 °C, mild and extremely cold industrial equipment towers, kettles, pipes, valves, containers and so on.
Second, excellent chemical stability: almost resistant to all organic and inorganic compounds corrosion (except elemental fluorine, chlorine trifluoride and molten alkali metal), has become the most ideal corrosion-resistant material in petroleum, chemical, atomic energy and other aspects.
Third, excellent electrical properties: high dielectric strength, dielectric strength of 30 kV / mm, in a film of 0.1 mm thick, dielectric strength of 100 kV / mm, dielectric strength does not change with temperature.
4. Abnormal surface Non-stick: It is characterized by molecular structure specificity, small surface polarity, non-adhesive effect on general materials, surface energy of only 18 dyne/cm, and is widely used in textile, food, paper and other light industries.
5. Low friction coefficient and strong self-lubrication: The friction coefficient is 0.04, which is widely used in shipbuilding, machinery, aviation, textile and so on.
In chemical engineering, a filler refers to an inert solid material contained in a packed column, such as a Pall ring and a Raschig ring, which acts to increase the atmospheric-liquid contact surface to strongly intimately mix with each other. In chemical products, fillers, also known as fillers, refer to solid materials used to improve processing properties, mechanical properties of products and/or reduce costs: suitable for various separation, absorption, desorption devices, atmospheric and vacuum devices, Synthetic ammonia decarburization, desulfurization system, ethylbenzene separation, isooctane, toluene separation, etc.