Work

A novel modified nano-alumina composite sol for potential application in forest firefighting

Year: 2023

Type: article

Abstract: Herein, modified ammonium polyphosphate wrapped nano-alumina (mAPP@Als) was first synthesized and then dispersed in traditional fire extinguishing solution (FES) to fabricate a FES-mAPP@Als composite sol. It was found that the phosphorus-silica containing units were attached onto the nano-alumina surface, and the mAPP@Als particles showed excellent dispersion level in FES with a single-domain particle size distribution range. Due to the synergistic effects of the phosphorus-nitrogen and silica-alumina flame retardant components, FES-mAPP@Als (5% concentration) coated wood exhibited improved limiting oxygen index (33.2%) and carbonization ability, and depressed heat release (41.9%) and smoke production (10.7%), as compared to the pristine wood. In addition, the FES-mAPP@Als composite sol showed enhanced fire-extinguishing and anti-reignition capacities compared to the FES. This research offers a novel composite sol fire extinguishing agent for fighting forest fires.

Source: RSC Advances

DOI: 10.1039/d3ra03979j

Authors: Weining Du, Mingqiang Yan, Chaolu Yin, Zejiang Zhang

Institutions: Sichuan Fire Research Institute, Ministry of Emergency Management of the People's Republic of China

Language: English

Topic: Flame retardant materials and properties

Subfield: Polymers and Plastics

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,042

Funder: Sichuan Province Science and Technology Support Program