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Salient Features

TEMPERATURE:
PTFE can withstand temperature ranging from -260°C (-500°F) to +260°C (+500°F). PTFE retains its temperature beyond the limit of all other thermoplastics & elastomers. PTFE can also sustain short exposure to higher temperatures beyond its withstand limit
 
WEAR RESISTENCE:
PTFE has excellent Wear & Tear Resistance making it ideal for bearing applications. Inorganic filler such as glass fiber, carbon & graphite are added to PTFE to make it adaptable to demanding environments. PTFE has third lowest friction of any solid material making it ideal for non-stick applications.
 
CHEMICALLY INERT:
PTFE materials are essentially chemically inert. This includes ozone, chlorine, acetic acid, ammonia, sulfuric acid and hydrochloric acid. They are affected only by molten alkali metals, fluorine and chlorine trifluoride at elevated temperatures and pressures.
 
DIELECTRIC STRENGTH:
Teflon has a high dielectric strength over many different frequencies, low dissipation factor and high surface resistivity. Dielectric strength is the high voltage that the insulating material can withstand before it breaks down. In addition it has a low dissipation factor; this is the percentage of electrical energy absorbed and lost when current is applied to an insulating material. A low dissipation factor means that the absorbed energy dissipated as heat is low.
 
FILLERS : The following fillers can be added to Virgin PTFE :
  • Glass fillers that increase wear resistance.
  • Carbon and graphite fillers exhibit good rubbing or sliding characteristics on contact.
  • Bronze + MOS2 fills have better wear & creep resistance. It is also possible to add pigments and other polymers to the PTFE.
 
NON-STICKY:
Very few solid substances will permanently adhere to a Teflon coating. While tacky materials may show some adhesion, almost all substances release easily. However an important innovation over the years is that PTFE can stick to another surface by using a chemical process called etching. The etching is brown in color and when an epoxy or adhesive is applied to the etched side it will adhere to another surface. We have supplied PTFE Steel Plates used for sliding heavy machinery to M/s. Anup Engineering.
 
PROPERTY RETENTION:
PTFE exhibits excellent retention of properties after a long period of time, even at elevated temperatures and in the presence of oils, solvents, UV light, oxidizing agents and other environmental agents.
 
LIGHT STABILITY:
PTFE has one of the lowest refractive indexes. It does not change its visual appearance after exposure to ultraviolet or infrared light.
 
HUMIDITY:
PTFE is completely resistant to hydrolysis. PTFE is a good barrier for water permeation. Its typical properties and dimensional stability remain unchanged even after long periods of time in water. Teflon finishes are both hydrophobic and oleo phobic, cleanup is easier and more thorough.
 
BIOGRADATION:
PTFE is inert to microbiological and enzymic attack because the pure polymer does not provide any nourishment or porosity for these growths.
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