The main material of the raw material belt is polytetra […]
The main material of the raw material belt is polytetrafluoroethylene, what does it have to do with PTFE, Teflon, and polytetrafluoroethylene? What material is PTFE? , What material is PTFE? What material is Teflon? Wait, the simple answer is that PTFE is a kind of plastic, a kind of high-grade plastic, and people call it the "Plastic King". PTFE material is different from other plastics in properties and processing methods. PTFE materials have many excellent characteristics, and the uses of PTFE materials have become more and more extensive.
What material is PTFE
The abbreviation of polytetrafluoroethylene (Poly tetra fluoroethylene) is PTFE. What material is polytetrafluoroethylene (PTFE)? PTFE is a kind of engineering plastic. The chemical name of PTFE is polytetrafluoroethylene. And what material is Teflon? Teflon is another name for polytetrafluoroethylene. Many foreigners also call it Teflon. Because Teflon is a registered trademark of DuPont, PTFE plastic was invented by DuPont, so many people later called it Teflon.
What material is Teflon?
Teflon is the common name of polytetrafluoroethylene, called Teflon, English polytetrafluoroethylene, Teflon plastic resin performance: excellent corrosion resistance, can withstand in addition to molten alkali metals, fluorinated media and sodium hydroxide above 300 ℃ Except for all strong acids (including aqua regia), strong oxidants, reducing agents and various organic solvents; it has strong insulation resistance and is not affected by the environment and frequency. The volume resistance can reach 1018 ohm·cm. Low loss, high breakdown voltage; PTFE material also has excellent resistance to high and low temperature, has little effect on temperature, has a wide temperature range, and can be used at a temperature of -190℃～+250℃; PTFE material has unique characteristics The self-lubricating property, with the smallest coefficient of friction in plastics, is an ideal oil-free lubricating material, which can be used as an oil-free bearing, etc.; in addition, the PTFE material has outstanding surface non-stickiness, and it is found that the known solid materials cannot adhere On the surface, it is a solid material with the smallest surface energy; PTFE material also has good resistance to atmospheric aging, radiation resistance and low permeability. After long-term exposure to the atmosphere, its surface properties remain unchanged, and The non-flammability of PTFE material, the limiting oxygen index is below 90, if the open flame is removed, the PTFE material will not continue to burn. But it is worth noting that although the PTFE material is non-toxic and safe, such as burning at a high temperature above 380 ℃ or an open flame, it can release toxic gases when it is cracked at high temperature. This should be paid attention to.
Application of PTFE
Because PTFE material has the above characteristics, it has a wide range of uses. Usually we make PTFE plates, PTFE tubes, PTFE rods, PTFE films, and various special-shaped parts. It can also be formed by pushing or extrusion processing for high temperature. Wires can also be made into thin films and then cut into shaft-mounted PTFE tapes, which are used to produce high-frequency cables, or directly made into water dispersions, which can be used for coating, dipping or making fibers; in addition, we often see The non-stick pan is made of PTFE non-stick material, the parts of the bottle grabber and the medicine nozzle of the food and pharmaceutical factory. All kinds of PTFE products have played a pivotal role in the national economic fields such as chemical industry, machinery, electronics, electrical appliances, military industry, aerospace, light industry and textile, environmental protection and bridges.