Along with the development of science and technology, more and more new materials are born to best meet the requirements of technology and life. In this article, lozenza will mention a material that is commonly used today, which is PTFE plastic or also known as Teflon.
What is PTFE plastic?
PTFE was discovered in 1938 by Roy Plunkett, an American chemist. He discovered that a tank of tetrafluoroethylene refrigerant had polymerized into a white powder, which is the powder that can form PTFE plastic as it is today.
PTFE stands for Polytetrafluoroethylene and is also known as Teflon. This is an off-white, flexible and extremely flexible plastic fluoropolymer; it is created by the free radical polymerization reaction of many tetrafluoroethene molecules together. PTFE is suitable for many applications in many different industries such as aerospace, food and beverage, pharmaceutical and telecommunications.
PTFE is usually produced in the form of rods or tubes in various sizes and additives can be added to increase the wear resistance and durability of the product.
Composition
The composition of PTFE resin consists of many tetrafluoroethene molecules joined together. Tetrafluoroethylene with the molecular formula C2F4 is a colorless, odorless gas produced by heating chlorodifluoromethane (CHClF2) at 600 to 700°C. Chlorodifluoromethane is in turn obtained by reacting hydrogen fluoride (HF) with chloroform (CHCl3).
Tetrafluoroethylene monomers (small, single molecules) are immersed in water and then polymerized (linked into large, multi-unit molecules) under high pressure in the presence of initial free radicals. The polymer consists of a chain of carbon atoms bonded to two fluorine atoms:
The fluorine atoms surround the carbon chain like a protective shell, creating a chemically inert and relatively dense molecule with very strong carbon-fluorine bonds. The polymer is inert to most chemicals, does not melt below 327°C and has the lowest coefficient of friction of any known solid.
Top Applications of PTFE
PTFE is used for bushings, bearings, gears and other machine parts that do not require lubrication.
As an insulating material in high temperature conditions and for cooking utensils that do not use much oil.
Production of connecting wires in aerospace and computer applications (plugs, coaxial cables, etc.)
Used in manufacturing, food packaging, and industrial piping that is frequently exposed to chemicals and acids.
A material for sealing components in chemical applications.
There are several popular types of PTFE plastic
There are many types of PTFE plastic on the market today, but some are only for special applications in less-known fields such as aerospace or industrial manufacturing. Below are the types of PTFE plastic commonly used today.
PTFE sheet
A polymer plastic that is resistant to chemicals and has an extremely low friction surface, does not adhere to any surface.
PTFE sheets are usually milky white in size 1mx1m and 1mx10m. The thickness of the sheet ranges from 5mm to 40mm. It is durable, non-conductive, non-flammable and abrasion resistant wear. Waterproof, smooth surface makes cleaning easier.
PTFE rod
PTFE rod has very good thermal stability, the maximum working temperature is +260 degrees C and the minimum is -260 degrees C. Possesses outstanding electrical insulation properties, is not moldy, resistant to chemicals and acids, and is resistant to ultraviolet rays.
However, PTFE rod is quite long, so it is flexible, so care must be taken during transportation and construction. Its weight is quite heavy compared to some other types of plastic.
PTFE tube
PTFE tube is quite similar to the rod in its long, cylindrical shape. However, because it is a tube, the middle is clear, so its hardness is not as good as the rod.
Thanks to its hollow structure, PTFE tubes are very suitable for use in medical equipment, insulating tools, high-performance filters, etc.
PTFE film
Thin, light and smooth, these are the characteristics of PTFE film, this type of plastic can be rolled up easily like regular plastic films.
At Hoa Viet Plastics, you can find genuine PTFE sheet and rod products at reasonable prices and receive full advice on product information and technical issues completely free of charge. In addition, we also provide many other types of engineering plastics as well as skylight roofing products and advertising materials in the HCMC area. For more information, please contact:
Address:
- Office: SB6-229, Vinhome Ocean Park2, Van Giang, Hung Yen Province
- Factory: Phan Dinh Phung Ward, My Hao Town, Hung Yen Province
Hotline:(+84) 962 897 368
Email:sales@hoavietteflon.com
