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J Colloid Interface Sci. 2018 Nov 1;529:345-356. doi: 10.1016/j.jcis.2018.06.038. Epub 2018 Jun 19.

Manganese phytate dotted polyaniline shell enwrapped carbon nanotube: Towards the reinforcements in fire safety and mechanical property of polymer.

Author information

1
State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, China.
2
School of Civil Engineering and Environmental Engineering, Anhui Xinhua University, Hefei, Anhui 230088, China.
3
State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, China. Electronic address: yckan@ustc.edu.cn.
4
State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, China. Electronic address: xingwy@ustc.edu.cn.

Abstract

High fire hazard of epoxy resin (EP) has been an unavoidable obstruction on its wide application. Here, a manganese phytate dotted polyaniline shell enwrapped carbon nanotube (MPCNT) is facilely constructed and employed as flame retardant for EP. By adding 4.0 wt% MPCNT, the peak heat release rate, total heat release values, peak CO yields and total CO yields are decreased by 27.2, 12.3, 44.8, and 23.3%, respectively. The decreased absorbance intensity of toxic aromatic volatiles is also observed. Then, a tripartite cooperative flame retardant mechanism (a continuous barrier network, catalytic charring function of phytate, and catalytic activity of MnP/C system) is proposed. Furthermore, the storage modulus of EP composites with 2.0 and 4.0 wt% MPCNT are increased by 23.0 and 25.8% at 40 °C, respectively. Thus, the simultaneous reinforcements in fire safety and mechanical performance of EP are successfully achieved. This work may represent a significant step forward in the facile construction of functionalized carbon materials for achieving their whole potentials in polymer-matrix composite.

KEYWORDS:

Carbon nanotube; Fire toxicity; Flame retardancy; Mechanical property; Polymer-matrix composite

PMID:
29936412
DOI:
10.1016/j.jcis.2018.06.038

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