Polytetrafluoroethylene powder

Polytetrafluoroethylene powder is made of different materials, has a wide range of uses, outstanding performance, and has a method of preparation.

1. Uses
Its application field is rich. For industrial equipment, it can be used as a lubricating coating to make the equipment run smoothly, reduce wear and prolong life, such as the parts of various precision machine tools, coated with this powder, the friction loss is greatly reduced. For chemical pipelines, because of its anti-corrosion ability, it can be lined with pipes to prevent chemical erosion and ensure long-term durability of pipelines, such as pipelines for conveying strong acids and alkalis. For cooking utensils, it is often covered on the surface of pots and pans to make food non-stick, convenient to cook, and easy to clean. It is also used in the field of electronics. It is an insulating material to ensure the stable operation of electronic components and is free from electromagnetic interference.

Second, performance
Polytetrafluoroethylene powder has outstanding performance. First, it has strong chemical stability and hardly reacts with any chemical substances. Strong acids, strong alkalis, and strong oxidants are difficult to damage it. Second, it has excellent high temperature resistance. It can withstand high temperatures for several hundred degrees without deformation or decomposition, and can play a stable role in high temperature environments. Third, it has low friction coefficient, smooth surface, and small sliding resistance in contact with objects. This characteristic makes it excellent in many sliding parts. Fourth, it has good electrical insulation and is difficult for current to penetrate. It is an indispensable material for the electronic and electrical industry.

III. Preparation
There are two common methods for its production. One is the emulsion polymerization method, which uses water as the medium, adds emulsifiers, initiators, etc., so that the TFE monomer is polymerized in the emulsion state, and post-processed to obtain polytetrafluoroethylene powder. The powder obtained by this method has uniform particle size and fine particle size, which is suitable for high-end fields. The other is the suspension polymerization method, in which the TFE monomer is suspended polymerized in the aqueous phase, and the conditions such as stirring and initiator are used to generate polytetrafluoroethylene particles, which are then pulverized to obtain powder. The powder obtained by this method has a large particle size and relatively low cost, which is suitable for general industrial needs.