SYNTHESIS AND CHARACTERIZATION OF MELAMINE MODIFIED UREA FORMALDEHYDE RESIN AND ITS APPLICATION IN FLAME RETARDANT EXPANDABLE POLYSTYRENE FOAM
Polystyrene foam is a kind of cellular materials and has been developed into one of the most widely applied foam materials.The lack of flame resistance limites the application of polystyrene foams in many areas.In this work, melamine modified urea formaldehyde (UFM) resin accompanied with intumescent flame retardant (IFR) was used to improve the flame retardancy of expandable polystyrene (EPS) by coating method.The introduction of melamine in urea formaldehyde resin can increase the solid content of the resin and further decrease the free formaldehyde content.After coating, the flame retardant properties of EPS was significantly improved with LOI value of 36.3% and V-0 rating in UL-94 tests by the presence of 20 phr IFR.The peak heat release rate was reduced from 406 kW/m2 of neat EPS to 49 kW/m2.The thermal stability and smoke density were also characterized and the possible flame retardant mechanism was proposed.
B.Cao X.Y.Gu J.Sun S.Zhang
Key Laboratory of Carbon Fiber and Functional Polymers (Beijing University of Chemical Technology, Ministry of Education) , Beijing 100029, China
国际会议
长春
英文
230-231
2016-06-15（万方平台首次上网日期，不代表论文的发表时间）