Surface finishing agents applied to fiberglass fabric before PTFE coating are critical for final PTFE high-temperature cloth performance. Organosilane coupling agents create molecular bridges between inorganic glass fiber and organic PTFE, boosting peel strength from <2 N/cm to 4-8+ N/cm. Proper treatment also enhances heat resistance (260°C+), dielectric performance, and chemical resistance. Untreated fabric leads to delamination, bubbling, and short service life.

Warp and weft density of fiberglass fabric determines PTFE high-temperature cloth performance. Higher density increases tensile strength and surface smoothness but reduces tear strength (inverted U-curve), flexibility, and coating penetration. Optimal density balances penetration, tear resistance, flexibility, and surface finish. Low density suits dynamic bending; high density for non-stick and insulation.

Fiberglass weave pattern – plain, twill, or satin – significantly affects PTFE high-temperature fabric properties. Satin weave offers highest tear strength (2-3x plain) and flexibility, ideal for dynamic bending. Plain weave provides best dimensional stability and peel adhesion, suited for static applications. Twill balances all properties for general use.

Coating uniformity of PTFE high-temperature fabric is determined by four factors: coating formulation (particle size 0.15-0.35 μm, viscosity, solid content), coating & sintering process (blade coating preferred for uniformity), substrate quality (weave pattern, pre-treatment), and production environment (20-25°C, <60% RH). Dip + blade combined process balances penetration and surface smoothness.

Proper cleaning and maintenance extend the life of PTFE high-temperature fabric. Clean after use and after cooling. Use soft brushes, neutral detergents, or alcohol for stains. Never use strong acids/alkalis, bleach, or metal scrapers. Regular silicone oil lubrication reduces wear. Follow these guidelines to prevent coating damage.