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Phosphorus-containing flame retardant epoxy thermosets: recent advances and future perspectives
作者:Huo SQ#, Song PA#*, Yu B, Chevali VS, Ran SY, Xue YJ, Liu L, Fang ZP*, Wang H*
关键字:Epoxy thermoset, Phosphorus-containing flame retardants, Flame retardancy, Thermal stability, Mechanical properties
论文来源:期刊
具体来源:Progress in Polymer Science, 2021.3, 114: 101366
发表时间:2021年
Their pervasive use in industrial applications renders the development of environmentally benign flame- retardant epoxy (EP) thermosets a timely and important goal. The last two decades have witnessed the rise of phosphorus (P)-containing flame retardants for EP due to their high flame retardancy efficiency, low toxicity, multiple modes of action, molecular diversity and other favorable properties. P-containing flame retardants are classified into two types: reactive and additive, according to whether they partic- ipate in the curing process. Recent advances in both of these classes of P-containing flame retardants motivate this comprehensive review on the design and synthesis of P-containing flame retardants and their impact on the material properties of EP thermosets. This review focuses on the state-of-the-art knowledge of P-containing flame retardants and their effects on flame retardancy, thermal stability and mechanical properties of the resultant EP. First, representative flame-retardant mechanisms are reviewed. Subsequently, practical applications of P-containing flame-retardant EP thermosets are presented. Finally, the key challenges associated with P-containing flame retardants for EP thermosets are highlighted, and opportunities for future research in the field are proposed.