Qy－1增稠剂的热稳定性和热氧降解动力学研究  

Study on the Thermal Stability and Kinetics of the Thermal Oxidation Degradation of Qy-1 Thickening Agent

作　　者：陈栋华[1] 王利华[1] 袁誉洪[1] 韦玉梅[1] 

机构地区：[1]中南民族学院化学系

出　　处：《中南民族大学学报（自然科学版）》1995年第4期14-18,共5页Journal of South-Central University for Nationalities：Natural Science Edition

摘　　要：用ＴＧ－ＤＴＧ法研究了Ｑｙ－１增稠剂在空气中的热氧化降解过程和非等温动力学，发现Ｑｙ－１增稠剂热重ＴＧ曲线为４个台阶，说明Ｑｙ－１增稠剂的热氧降解反应分为４步，且每步反应的动力学参数不相同；随升温速率的提高，降解温度相对增大，而降解率变化比较复杂，降解过程中均约有５％的残碳存在．用双热重曲线法求得各台阶的反应级数，用Ｃｏａｔｓ－Ｒｅｄｆｅｒｎ方程进行动力学处理，求得各台阶的表观活化能Ｅ和频率因子Ａ．By using TG and DTG,the processes of the thermal degradation of Qy-1 thickening agent in air have been studied. It has been found that the thermal oxidation of Qy-1 thickening agent is of four steps. The degradation tempertures at various degradation steps are increased with the heating rate. But the degrees of degradation are complicated. However, the total degrees of degradation of Qy-1 thickening agent for each heating rate are similar,i. e. about 95 % at 670K.Treated with Coats-Redfern equation,we found the apparent degradation reaction order and the activated energy of degradation reaction.

关 键 词：Qy-1增稠剂 热重法 热稳定性 降解过程 降解动力学 

分 类 号：TQ314.269[化学工程—高聚物工业]