In situ growth of 0D silica nanospheres on 2D molybdenum disulfide nanosheets: Towards reducing fire hazards of epoxy resin

Keqing Zhou; Gang Tang; Rui Gao; Shudong Jiang

doi:10.1016/j.jhazmat.2017.11.059

In situ growth of 0D silica nanospheres on 2D molybdenum disulfide nanosheets: Towards reducing fire hazards of epoxy resin

J Hazard Mater. 2018 Feb 15:344:1078-1089. doi: 10.1016/j.jhazmat.2017.11.059. Epub 2017 Dec 2.

Authors

Keqing Zhou¹, Gang Tang², Rui Gao³, Shudong Jiang⁴

Affiliations

¹ Faculty of Engineering, China University of Geosciences (Wuhan), 388 Lumo Road, Wuhan, Hubei 430074, PR China; Key Laboratory of Polymer Processing Engineering, South China University of Technology, Ministry of Education, Guangzhou 510640, Guangdong, PR China. Electronic address: zhoukq@cug.edu.cn.
² School of Architecture and Civil Engineering, Anhui University of Technology, 59 Hudong Road, Ma'anshan, Anhui 243002, PR China.
³ Faculty of Engineering, China University of Geosciences (Wuhan), 388 Lumo Road, Wuhan, Hubei 430074, PR China.
⁴ Department of Fire Protection Engineering, Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, The Western Park of the Hi-Tech Industrial Development Zone, Chengdu, Sichuan 611756, PR China.

PMID: 30216967
DOI: 10.1016/j.jhazmat.2017.11.059

Abstract

This report described a facile process for the preparation of 2D/0D MoS₂-SiO₂ hybrids using a simple in situ growth method, with the purpose of promoting the dispersion of MoS₂ in polymer matrices and improving the properties of polymer materials. FTIR, XPS, TGA and TEM measurements were performed to characterize the structure and morphology of the synthesized hybrids which were then introduced into epoxy to reduce flammability. The hybrids dispersed well in the epoxy matrix. No obvious agglomerations were observed. In comparison with those of neat epoxy, the incorporation of a low loading of MoS₂-SiO₂ hybrids resulted in significant decrements in heat release rate, total heat release and volume of toxic effluents released during combustion, which indicated that the fire hazards of epoxy composites were strongly reduced. The good dispersion, labyrinth barrier effect and the catalytic effect of MoS₂-SiO₂ hybrids on char formation may contribute to the observed decrease in the flammability of epoxy resin.

Keywords: Epoxy; Fire hazards; Hybrids; MoS(2); Silica.

Publication types

Research Support, Non-U.S. Gov't