Effect of Transition Metal on the Thermal Degradation of Cotton Cellulose Modified with THPC
The thermal decomposition of cellulose treated with tetrakis(hydroxymethyl) phosphonium chloride (THPC),urea and ammonium dihydrogen phosphate (ADP) and its metal complexes was studies by TG,DTA and CONE.The activation energies for the second stage of thermal degradation have been obtained by following the Broido equation.Experimental data show that for the complexes of ceII-THPC-urea-ADP with metal ions,the activation energies and thermal decomposition temperatures are higher than those of cell-THPC-urea-ADP,which shows these metal ions can increase the thermal stability of cell-THPC-urea-ADP.Moreover,Ni(Ⅱ),and Zn(Ⅱ)can more increase thermal stability of samples than Co(Ⅱ).The CONE data indicate that the transition metals have smoke suspension on cell-THPC-urea-ADP.Moreover,Co(Ⅱ) has more effect than Ni(Ⅱ),and Zn(Ⅱ) in the smoke suspension.
cotton cellulose decomposition flame-retardants thermal analysis CONE
Chunfeng Sun Ming Gao
School of Environmental Engineering, North China University of Science and Technology, Box 206,Yanjiao Beijing 101601, China
国际会议
北京
英文
361-365
2012-12-16(万方平台首次上网日期,不代表论文的发表时间)