Answer
Sep 18, 2024 - 08:10 AM
Flame-resistant (FR) clothing is often treated with chemicals like ammonium polyphosphate, which enhances the fabric's ability to resist ignition and self-extinguish when exposed to flames. Inherent flame-resistant materials, such as aramid fibers (e.g., Nomex) and modacrylic, do not require chemical treatment as their flame resistance is built into the fiber structure.
