Home structure fires are responsible for a majority of fire deaths and injuries. Wood is a key component of home construction due to its excellent mechanical properties and renewability, but it is inherently flammable. This study demonstrates the ability of a waterborne polyelectrolyte complex (PEC) nanocomposite coating to significantly increase wood’s time to ignition, while decreasing peak heat release rate and total heat release. The PEC treatment, comprised of polyethylenimine and sodium hexametaphosphate, preserves the visual aesthetic of the wood and adds little additional weight (ca. 6%), while concurrently increasing flexural modulus and flexural strength. SEM images after torch testing provide evidence of a microintumescent flame retardant mechanism. This unique water-based coating provides an environmentally benign means to render wood construction much safer.

Environmentally benign polyelectrolyte complex that renders wood flame retardant and mechanically strengthened

ACS Fall 2021

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.