The most common filled grades and its resulting enhanced mechanical properties are:
Glass Fiber (PTFE-GF): Added in various amounts (5% to 40%), increases compressive strength, rigidity and wear; reduces creep and cold flow; minimal effect on chemical and electrical properties.
Carbon (PTFE-CF): Added in various amounts (10% to 35%), increases compressive strength, hardness, wear, and load properties; good chemical resistance; various types and amounts of carbon can be added to alter conductivity.
Graphite (PTFE-CGF): Added in various amounts (5% to 15%), reduces coefficient of friction; reduces initial wear; increases strength.
Molybdenum Disulfide (PTFE-MoS2): Added in various amounts (5% to 15%), increases hardness, stiffness, and wear; minimal effect on chemical and electrical properties.
Metal (PTFE-BR, PTFE-SSF): Best wear properties, remarkable deformation strengths and good thermal conductivity.
Mineral: Mica added in various amounts (5% to 10%), provides excellent wear and stability in addition to FDA compliance.
Applications
- * Excellent chemical and hydrolysis reistance)
- * Excellent electrical insulating properties)
- * Low coefficient of friction)
- * Good dimensional stability)
- * High dielectric properties)
- * Good wear resistance)
- * Good UV and weather resistance)
- * High maximum allowable service temperature in air (continuously 260° C)
Advantages
- * Unfilled – Virgin
- * Unfilled – Mechanical
- * Glass Filled
- * Metal Filled
- * Carbon Filled
- * Mineral Filled
- * Blend
- * Static Control – Dssipative