title: The influence of manganese-cobalt oxide/graphene on reducing fire hazards of poly(butylene terephthalate).
abstract: By means of direct nucleation and growth on the surface of graphene and element doping of cobalt oxide (Co3O4) nano-particles, manganese-cobalt oxide/graphene hybrids (MnCo2O4-GNS) were synthesized to reduce fire hazards of poly(butylene terephthalate) (PBT). The structure, elemental composition and morphology of the obtained hybrids were surveyed by X-ray diffraction, X-ray photoelectron spectrometer and transmission electron microscopy, respectively. Thermogravimetric analysis was applied to simulate and study the influence of MnCo2O4-GNS hybrids on thermal degradation of PBT during combustion. The fire hazards of PBT and its composites were assessed by the cone calorimeter. The cone test results had showed that peak HRR and SPR values of MnCo2O4-GNS/PBT composites were lower than that of pure PBT and Co3O4-GNS/PBT composites. Furthermore, the incorporation of MnCo2O4-GNS hybrids gave rise to apparent decrease of pyrolysis products containing aromatic compounds, carbonyl compounds, carbon monoxide and carbon dioxide, attributed to combined impact of physical barrier for graphene and cat O4 for organic volatiles and carbon monoxide.
authors.affiliation: State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, PR China.
authors.forename: Dong
authors.initials: D
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, PR China.
authors.forename: Qiangjun
authors.initials: Q
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, PR China.
authors.forename: Keqing
authors.initials: K
authors.lastname: Zhou
authors.affiliation: State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, PR China.
authors.forename: Wei
authors.initials: W
authors.lastname: Yang
authors.affiliation: State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, PR China; USTC-CityU Joint Advanced Research Centre, Suzhou Key Laboratory of Urban Public Safety, Suzhou Institute for Advanced Study, University of Science and Technology of China, 166 Ren'ai Road, Suzhou, Jiangsu 215123, PR China. Electronic address: yuanhu@ustc.edu.cn.
authors.forename: Yuan
authors.initials: Y
authors.lastname: Hu
authors.affiliation: State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, PR China; CAS Key Laboratory of Mechanical Behaviour and Design of Materials, Department of Modern Mechanics, University of Science and Technology of China, Hefei, Anhui 230026, PR China. Electronic address: gongxl@ustc.edu.cn.
authors.forename: Xinglong
authors.initials: X
authors.lastname: Gong
mesh_terms: D003035:Cobalt / Q000737:chemistry*; D005390:Fires / Q000517:prevention & control; D006108:Graphite / Q000737:chemistry*; D008345:Manganese / Q000737:chemistry*; D053761:Nanocomposites / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D011091:Polyesters / Q000737:chemistry*; D012906:Smoke
chemical_list: D010087:Oxides; D011091:Polyesters; D012906:Smoke; C041733:poly(1,4-butylene terephthalate); D003035:Cobalt; D008345:Manganese; D006108:Graphite; C060728:cobalt oxide
keywords: MnCo(2)O(4)–GNS hybrids; Nanocomposites; Poly(butylene terephthalate); Smoke hazards; Thermal hazards