Issue

Vol. 14 (2022)

Fire Intumescent, High-Temperature Resistant, Mechanically Flexible Graphene Oxide Network for Exceptional Fire Shielding and Ultra-Fast Fire Warning

https://doi.org/10.1007/s40820-022-00837-1
Cheng‑Fei Cao
Centre for Future Materials, University of Southern Queensland, Springfield Central 4300, Australia
Bin Yu
State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, China
Zuan‑Yu Chen
College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of MoE, Hangzhou Normal University, Hangzhou 311121, China
Yong‑Xiang Qu
College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of MoE, Hangzhou Normal University, Hangzhou 311121, China
Yu‑Tong Li
College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of MoE, Hangzhou Normal University, Hangzhou 311121, China
Yong‑Qian Shi
College of Environment and Resources, Fuzhou University, Fuzhou 350116, China
Zhe‑Wen Ma
School of Engineering, Zhejiang A & F University, Hangzhou 311300, China
Feng‑Na Sun
College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of MoE, Hangzhou Normal University, Hangzhou 311121, China
Qing‑Hua Pan
College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of MoE, Hangzhou Normal University, Hangzhou 311121, China
Long‑Cheng Tang
College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of MoE, Hangzhou Normal University, Hangzhou 311121, China
Pingan Song
Centre for Future Materials, University of Southern Queensland, Springfield Central 4300, Australia
Hao Wang
Centre for Future Materials, University of Southern Queensland, Springfield Central 4300, Australia

Corresponding Author: Hao Wang

Hao.Wang@usq.edu.au

Nano-Micro Letters, Vol. 14 (2022), Article Number: 92

Abstract

Smart fire alarm sensor (FAS) materials with mechanically robust, excellent flame retardancy as well as ultra-sensitive temperature-responsive capability are highly attractive platforms for fire safety application. However, most reported FAS materials can hardly provide sensitive, continuous and reliable alarm signal output due to their undesirable temperature-responsive, flame-resistant and mechanical performances. To overcome these hurdles, herein, we utilize the multi-amino molecule, named HCPA, that can serve as triple-roles including cross-linker, fire retardant and reducing agent for decorating graphene oxide (GO) sheets and obtaining the GO/HCPA hybrid networks. Benefiting from the formation of multi-interactions in hybrid network, the optimized GO/HCPA network exhibits significant increment in mechanical strength, e.g., tensile strength and toughness increase of ~ 2.3 and ~ 5.7 times, respectively, compared to the control one. More importantly, based on P and N doping and promoting thermal reduction effect on GO network, the excellent flame retardancy (withstanding ~ 1200 °C flame attack), ultra-fast fire alarm response time (~ 0.6 s) and ultra-long alarming period (> 600 s) are obtained, representing the best comprehensive performance of GO-based FAS counterparts. Furthermore, based on GO/HCPA network, the fireproof coating is constructed and applied in polymer foam and exhibited exceptional fire shielding performance. This work provides a new idea for designing and fabricating desirable FAS materials and fireproof coatings.


Highlights:


1 Graphene oxide-based hybrid networks were fabricated via introducing multi-amino molecule with triple roles (i.e., cross-linker, fire retardant and reducing agent).
2 The optimized hybrid network with mechanically robust, exceptional intumescent effect and ultra-sensitive fire alarm response (~ 0.6 s) can be used as desirable smart fire alarm sensor materials.
3 Exceptional fire shielding performances, e.g., ~ 60% reduction in peak heat release rate and limiting oxygen index of ~ 36.5%, are achieved, when coated such hybrid network onto combustible polymer foam.

Keywords

Graphene oxide Multi-amino molecule Flame resistance Fire intumescent effect Ultra-fast fire warning
Cao, Cheng‑Fei, Bin Yu, Zuan‑Yu Chen, Yong‑Xiang Qu, Yu‑Tong Li, Yong‑Qian Shi, Zhe‑Wen Ma, Feng‑Na Sun, Qing‑Hua Pan, Long‑Cheng Tang, Pingan Song, and Hao Wang. 2022. “Fire Intumescent, High-Temperature Resistant, Mechanically Flexible Graphene Oxide Network for Exceptional Fire Shielding and Ultra-Fast Fire Warning”. Nano-Micro Letters 14 (April):92. https://doi.org/10.1007/s40820-022-00837-1.
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