CARBON FILLED PTFE EXCELLENT MECHANICAL AND WEAR PROPERTIESCarbon Filled PTFE was developed to provide a PTFE based material with improved mechanical strength.PTFE on its own has excellent frictional properties, elasticity and wear resistance but relatively poor mechanical strength and tends to fail in high PV applications.??CARBON FILLED PTFE PROPERTIESCarbon in itself is a brittle material with poor wear properties and mechanical strength. However, with the two combined in Carbon Filled PTFE formulations, the resultant material has excellent mechanical and wear properties, retains excellent frictional properties and is an excellent choice for seals and rings in dynamic and high-pressure applications. Carbon filled PTFE also provides good thermal conductivity, low permeability and is also electrically conductive making it a good choice for anti-static applications??POSSIBLE VARIATIONSThe most common carbon filled PTFE composition is 75% Virgin PTFE with 25% Carbon powder by weight. When a filler ratio or type is unspecified, it is fair to assume this is the material. However, it does tell the whole story. The type and percentage of carbon added to PTFE is a variable and is critical to material performance. It can be as little as 0.2% and as much as 40%.??Different percentages of carbon will display different material properties and performance. Something that is often overlooked is that different types of carbon powder can also affect material integrity and performance. To achieve the optimum physical properties and performance from any filled PTFE it is essential that the properties and type of fillers used are understood. Not all 25% carbon filled PTFE materials are the same, in fact, they can be extremely different.STRENGTHS???Good thermal and electrical conductivity good chemical resistance very economics improved wear resistance under loadWEAKNESSESHigh percentage fillers mean low elongation-conductivity can be a problem
