How Raw Material Purity Affects PTFE High-Temperature Fabric Performance
Raw material purity is the foundation of PTFE high-temperature fabric performance. High-purity PTFE emulsion (no metal ions, no low-molecular-weight residues) ensures heat resistance (no yellowing up to 260°C), stable non-stick, and high dielectric strength. For fiberglass, alkali-free E-glass (Na₂O <0.8%) maintains strength and insulation at high temperatures; medium/high-alkali glass causes degradation. Complete removal of weaving sizing agents prevents carbonization and delamination. Purity directly affects service life, food-grade compliance, and electrical reliability.
