Ce_2O_3对APP-PER-MA膨胀阻燃体系热解过程的协效作用  

Synergistic Effect of Ce_2O_3 in Ammonium Polyphosphate-Pentaeruthritol-Melamine Intumescent Flame Retardant System

作　　者：孙才英[1] 胡树林[1] 邢海涛[1] 董春梅[1] 展召顺[1] 

机构地区：[1]东北林业大学化学系,黑龙江省高校阻燃材料分子设计与制备重点实验室,哈尔滨150040

出　　处：《应用化学》2010年第10期1172-1176,共5页Chinese Journal of Applied Chemistry

基　　金：黑龙江省博士后基金资助项目(lbh-z08279)

摘　　要：采用热重分析和红外光谱技术研究了氧化铈(Ce2O3)对以聚磷酸铵(APP)为酸源、季戊四醇(PER)为炭源、蜜胺(MA)为气源的经典膨胀型阻燃剂(IFR)热分解性能的影响。结果表明,300～400℃时Ce2O3的存在加快了体系的分解和无机酸的生成速度,改变了IFR热解发生的时间,但是并没有从根本上改变热解过程;Ce2O3的添加使IFR阻燃剂第一阶段的热解活化能由65.73kJ/mol提高至73.47kJ/mol,第二、三、四阶段的热解活化能分别由167.46、135.13、141.34kJ/mol降低至85.25、96.08、58.18kJ/mol,并对IFR分解各阶段残留量有很大影响。The synergistic effect of Ce2O3 in ammonium polyphosphate-pentaeruthritol-melamine（APP-PERMA） intumescent flame retardant （IFR） system with ammonium polyphosphate （APP） for acid source,pentaeruthritol（PER） for carbon source and melamine （MA） for gas source was investigated by thermogravimetry analysis（TGA） and Fourier transform infrared spectroscopy（FTIR）.It shows that Ce2O3 increases the degradation and accelerates the production of inorganic acid during 300 ～ 400 ℃.Ce2 O3 changes the degradation time of IFR,however,it does not change the process of the degradation.Apparent activation energy analysis shows that Ce2O3 increases the apparent activation energy of IFR in the first decompose stage from 65.73 kJ/mol to 73.47 kJ/mol,and reduces it in the second,third and fourth stages from 167.46,135.13 and 141.34 kJ/mol to 85.25,96.08 and 58.18 kJ/mol,respectively.TGA shows that there is a great effect to the residue of IFR in every decompose stage when Ce2O3 is added.

关 键 词：热解 氧化铈 膨胀型阻燃剂 表观活化能 

分 类 号：O631[理学—高分子化学]