PTFE, or Polytetrafluoroethylene, is a versatile synthetic fluoropolymer famous as the non-stick coating (Teflon®) on cookware, known for its extremely low friction, chemical inertness, and wide temperature stability, making it crucial for industrial uses like seals, gaskets, electrical insulation, and medical devices.
Product Name: Polytetrafluoroethylene (PTFE)
Other Names: Teflon
Melting Point: 321 to 344 ℃
Boiling Point: 400 ℃
Solubility in Water: Insoluble in any solvent
Appearance: White solid
Specific Heat Capacity: 1.50 J/g°C
Hardness: 58
Resistivity: 10¹⁴ - 10¹⁹ Ω.cm
Thermal Conductivity: 0.167 - 0.300 W/m.K
Storage Conditions: Store at room temperature in a sealed container, away from light, in a well-ventilated and dry place.
Application Fields
1. Corrosion Protection: Due to its outstanding corrosion resistance, PTFE material has been widely used in many industries such as petroleum and textiles. Representative applications include exhaust pipes, steam pipes, high, medium, and low-pressure pipelines, and valves. Its advantages are particularly evident in harsh environments such as low temperatures and non-stick applications where conventional materials are unsuitable.
2. Electronics and Electrical Engineering: Polytetrafluoroethylene has a relatively low dielectric constant, making it suitable for the manufacture of enameled wires used in miniature motors. In addition, fluoroplastic films have a certain selective permeability to various gases, a property that can be utilized to manufacture oxygen sensors. Today, various forms of PTFE materials play an important role in the field of electronic and electrical insulation. PTFE glass fabric and glass cloth are used to make high-temperature and high-frequency insulation materials, which can be used in satellite communications and computers; PTFE film is used to make capacitors, as insulation layers, gaskets, and cables between instruments; PTFE thin-walled tubes of different diameters are used as lead wire sleeves, heat-shrinkable tubes and spiral tubes, and insulation water pipes for generators, etc.
3. Medical and Healthcare Applications: Due to the excellent biocompatibility of polytetrafluoroethylene, many people have conducted in-depth research on it as a biomaterial in recent years. In recent years, domestic and foreign researchers have developed PTFE membranes for use in artificial organs, such as artificial blood vessels and heart valves. For example, its use as artificial blood vessels and prosthetic stent materials in nasal reconstruction has achieved good results.
4. Construction: By coating ultra-fine glass fiber fabric with PTFE resin, PTFE membrane materials are lightweight, high-strength, fire-resistant, self-cleaning, unaffected by ultraviolet rays, fatigue-resistant, twist-resistant, aging-resistant, and have a long service life, high light transmittance, and very low heat absorption. It is precisely because of the invention of this groundbreaking membrane material that membrane structure buildings have become modern permanent buildings.
5. Low Friction Performance in Load-Bearing Applications: Because its friction coefficient is relatively low compared to most solid materials, filled PTFE has gradually become an excellent material for oil-free lubrication of various parts. Its applications are very wide-ranging, including bearings for chemical equipment, piston rings, support sliders for steel structure roof trusses, and bridge rotation mechanisms.