Study on the properties of flame retardant acrylate emulsion adhesive

YU Xiangdong;LIU Juan;CHEN Riqing;WANG Chunpeng;BU Hongzhong;Institute of Chemical Industry of Forest Products,CAF;National Engineering Lab. for Biomass Chemical Utilization,Key and Open Lab. on Forest Chemical Engineering,SFA; Jiangsu Provincal Key Lab. of Biomass Energy and Material;School of Science,Nanjing University of Technology;Institute of Chemical Industry of Forest Products,CAF National Engineering Lab. for Biomass Chemical Utilization,Key and Open Lab. on Forest Chemical Engineering,SFA; Jiangsu Provincal Key Lab. of Biomass Energy and Material;Institute of Forest New Technology,CAF;

flame-retardant acrylate;;modified adhesive;;aluminum hydroxide;;melamine pyrophosphate;;MP /pentaerythrito

Three kinds of acrylate emulsion adhesive modified with aluminum hydroxide( ATH),melamine pyrophosphate( MP) and MP /pentaerythritol( PER) were prepared by mechanical mixing method. The effects of the types,the amounts and the ratios of the flame retardant on the fire retardant behavior,mechanical property and the thermal stability of the acrylate emulsion adhesive were compared. The results showed that the tensile strength of the adhesive decreased and limiting oxygen index( LOI) increased with the increment of supplementing amount of the flame retardant,and adhesive modified with ATH had higher residue content at the same level with the comparision of the other two flameretardants' systems. The cone calorimeter results indicated that the addition of various flame retardant could effectively reduce the heat release rate( HRR),the mass loss rate( MLR) and the smoke production rate( SPR) of the adhesive.The scanning electron microscopy( SEM) showed that the adhesive modified with the ratio of intumescent flame retardant MP /PER to 3 /1 had the best flame retardant effect.