PTFE is among other things characterised by its chemical resistance, combined with a high temperature range from -190 to +260°C. The material absorbs no moisture, is non-flammable and is suitable for contact with food. Due to its unique properties, PTFE is used in the chemical industry, for example for bellows, seals, bearings, but also in the food industry, for example for coverings or linings.
By adding fillers to PTFE, the material gains optimal properties for the requested application. For example, as soon as PTFE with a filler of 25% glass is used, the material becomes mechanically stronger and provides more wear resistance. Most used fillers are glass, bronze, graphite, carbon and MoS₂.
The fillers can optimise the following properties: - Flow properties - Reduction of wear and friction - Rigidity and hardness - Electrical and thermal conductivity - Thermal stability