With the rapid increase of PTFE production capacity in my country, strengthening
the research and application of PTFE modification technology and developing new and efficient PTFE composite materials have become the current research and development direction of PTFE in China. PTFE can be modified by various means such as reinforcement, filling, compounding and blending to makeup for its own defects. The main methods are surface modification, filling modification and blending modification.
Next, we focus on filling modification:
At present, filled PTFE products are PTFE resin products with large output. By filling PTFE resin with different fillers such as inorganic, metal and organicpolymers, the pressure resistance, wear resistance and cooling performance of PTFE are improved. These fillers are required to withstand the sintering temperature of PTFE, not to react with PTFE, to have a certain particle size, and to improve some physical and chemical properties of PTFE.
Filling materials mainly include: inorganic filling materials, mainly glass fiber, graphite, molybdenumdisulfide and carbon fiber,etc.; metal filling materials, usually iron, copper, lead, molybdenum, tungsten, silver and other metals and their oxides to fill PTFE,especially cooper and its alloys are commonly used; theorganic filling materials are mainly organic fibers and high molecular polymers.
The PTFE sheet filled with the above different materials is also called modified PTFE sheet. We often produce and sell glass fiber filled PTFE sheet, graphite filled PTFE sheet, copper filled PTFE sheet, and barium sulfate filled PTFE sheet. plate, silica-filled PTFE plate, and glass bead-filled PTFE plate.
Modified PTFE, which can be processed by thermoplastic processing methods, has greatly improved processing performance, and is increasingly valued by theindustry, and is also increasingly favored by foreign markets and customers.