Source abstract
Abstract
In the present work, Co 3 (HPO 4 ) 2 (OH) 2 nanosheets were synthesized by hydrothermal method, and its structure was characterized by X‐ray diffraction and transmission electron microscopy. Then it was used as a synergistic agent with intumescent flame retardant (IFR) in ethylene‐vinyl acetate (EVA) copolymer. Thermogravimetric analysis data indicated that the addition of Co 3 (HPO 4 ) 2 (OH) 2 nanosheets into the EVA/IFR composites could increase the char yields. Cone calorimeter results revealed that Co 3 (HPO 4 ) 2 (OH) 2 in combination with IFR obviously changed the thermal decomposition behavior of EVA and formed a protective char layer on the surface of the composites, consequently leading to effective reduction in the flammability parameters, such as the heat release rate, total heat release. With the addition of 1 wt% Co 3 (HPO 4 ) 2 (OH) 2 and 34 wt% IFR, the LOI value increased to 26.5%, and the system could reach V‐0 rating. Laser Raman spectra of the residual char showed that the more graphitic char was formed with increasing the loading of Co 3 (HPO 4 ) 2 (OH) 2 . Scanning electron microscopy results demonstrated that the incorporation of Co 3 (HPO 4 ) 2 (OH) 2 promoted the EVA/IFR system to form a dense and continuous char layer. POLYM. COMPOS., 39:238–246, 2018. © 2016 Society of Plastics Engineers
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Research context
OpenAlex topics: Flame retardant materials and properties · Polymer Nanocomposites and Properties · Polymer composites and self-healing
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Affiliations
State Key Laboratory of Fire Science University of Science and Technology of China Hefei Anhui People's Republic China
USTC‐CityU Joint Advanced Research Centre Suzhou Institute for Advanced Study, University of Science and Technology of China Suzhou Jiangsu 215123 People's Republic China
Faculty of Engineering China University of Geosciences (Wuhan) Wuhan Hubei 430074 People's Republic China
School of Architecture and Civil Engineering Anhui University of Technology Ma'anshan Anhui 243002 People's Republic China
Department of Architecture and Civil Engineering City University of Hong Kong Hong Kong
Funding
National Basic Research Program of China (973 Program) · the National Natural Science Foundation of China · Fundamental Research Funds for the Central Universities · Opening Project of State Key Laboratory of Fire Science of USTC · Research Grants Council of the Hong Kong Special Administrative Region
References (26)
Show source-provided references
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