The influence of manganese-cobalt oxide/graphene on reducing fire hazards of poly(butylene terephthalate).

• 影响指数: 14.224
• 发表时间: Aug 2014 15
• 来源期刊: J Hazard Mater
• DOI: 10.1016/j.jhazmat.2014.05.072
• PMID: 24997255
• 文章类型: Journal Article
• 中科院分区: Q1;Q1;Q1
• 作者列表: Wang D,Zhang Q,Zhou K,Yang W,Hu Y,Gong X

关键词: MnCo(2)O(4)–GNS hybrids; Nanocomposites; Poly(butylene terephthalate); Smoke hazards; Thermal hazards

Mesh: Cobalt / chemistry; Fires / prevention & control; Graphite / chemistry; Manganese / chemistry; Nanocomposites / chemistry; Oxides / chemistry; Polyesters / chemistry; Smoke

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.