PTFE impregnation is not limited to fiberglass cloth. This article introduces 7 alternative substrates – aramid, carbon fiber, PBI, porous metal, graphite, asbestos (phased out), and ceramic fillers – with their process features, advantages, limitations, and key applications.

This article explains why alkali-free fiberglass cloth is the preferred substrate for PTFE high-temperature cloth. It covers chemical bonding via silane coupling agents and key physical properties like thermal stability, dimensional stability, and corrosion resistance – ensuring long-lasting performance in harsh environments.