Citation

Wu Q, Gong LX, Li Y, Cao CF, Tang LC, Wu L, Zhao L, Zhang GD, Li SN, Gao J, Li Y, Mai YW. ACS Nano 2018; 12(1): 416-424.

Copyright

(Copyright © 2018, American Chemical Society)

DOI

10.1021/acsnano.7b06590

PMID

29240398

Abstract

Design and development of smart sensors for rapid flame detection in post-combustion and early fire warning in pre-combustion situations are critically needed to improve the fire safety of combustible materials in many applications. Herein, we describe the fabrication of hierarchical coatings created by assembling a multi-layered graphene oxide (GO)/silicone structure onto different combustible substrate materials. The resulting coatings exhibit distinct temperature-response electrical resistance change as efficient early-warning sensors for detecting abnormal high environmental temperature, thus enabling fire prevention below the ignition temperature of combustible materials. After encountering a flame attack, we demonstrate extremely rapid flame detection response in 2-3 s and excellent flame self-extinguishing retardancy for the multi-layered GO/silicone structure that can be synergistically transformed to a multi-scale graphene/nano-silica protection layer. The hierarchical coatings developed are promising for fire prevention and protection applications in various critical fire risk and related perilous circumstances.

Language: en