D. Wang, Y. C. Kan, X. J. Yu, J. J. Liu, L. Song and Y. Hu (2016) In situ loading ultra-small Cu2O nanoparticles on 2D hierarchical TiO2-graphene oxide dual-nanosheets: Towards reducing fire hazards of unsaturated polyester resin. Journal/Journal Of Hazardous Materials 320 504-512. [In English]
Web link: http://dx.doi.org/10.1016/j.jhazmat.2016.08.066
Keywords: Cuprous oxide; Titanium dioxide; Graphene oxide; Unsaturated polyester; resin; Fire hazards; GRAPHENE OXIDE; POLYMER NANOCOMPOSITES; MOLYBDENUM-DISULFIDE; FLAME; RETARDATION; ENERGY-STORAGE; POLYPROPYLENE; PHOTOCATALYST; PERFORMANCE; FABRICATION; COMPOSITES

Abstract: Fire hazards have seriously hindered the commercial application of unsaturated polyester resin (UPR), and polymer inorganic nanosheet nanocomposites hold great promise in improving their flame-retardant properties. Herein, the hierarchical structured Cu2O-TiO2-GO nanosheets were synthesized and characterized by XRD, Raman, TEM and XPS. Then Cu2O-TiO2-GO nanosheets were incorporated into UPR matrix to obtain flame-retardant UPR nanocomposite. Incorporation of 2 wt%Cu2O-TiO2-GO nanosheets into UPR matrix resulted in an obvious reduction in PHRR and THR by 29.7 and 19.1%. TG-IR-MS results revealed that toxic pyrolysis gas such as benzene, CO and aromatic compounds greatly were decreased. In addition, RIIR spectra demonstrated the limited influence of Cu2O-TiO2-GO nanosheets on thermal degradation of UPR matrix, and SEM images of char residues showed that Cu2O-TiO2-GO nanosheets could improve their compactness. Based on the analysis of gaseous and condensed phase, a plausible flame-retardant mechanism was hypothesized to elaborate how Cu2O-TiO2-GO nanosheets work inside the flaming UPR nanocomposite. This innovative idea may be expanded to other polymer system and open a new door to develop polymeric nanocomposites with high performance. (C) 2016 Elsevier B.V. All rights reserved.