LPNR胶乳和NR胶乳热降解性能的研究  

Thermal degradation kinetics of LPNR latex and NR latex

作　　者：何兰珍[1] 郭璇华[2] 钟杰平[3] 杨磊[3] 陈静[2] 

机构地区：[1]湛江海洋大学理学院,广东湛江524088 [2]华南理工大学化工学院,广东广州510641 [3]华南热带农产品加工设计研究所,广东湛江524001

出　　处：《橡胶工业》2003年第9期522-525,共4页China Rubber Industry

基　　金：国家自然科学基金资助项目 ( 5 0 0 63 0 0 1);农业部天然橡胶加工重点开发实验室资助项目

摘　　要：采用热重分析法和导数热重分析法研究低蛋白NR(LPNR)胶乳和NR胶乳在氮气气氛中的热降解性能。结果表明 ,LPNR胶乳和NR胶乳的热降解过程相似 ,热降解反应级数相差不大 ,热降解率均随升温速率增大而略有增大 ;NR胶乳的平衡起始降解温度较高 ,LPNR胶乳的平衡最大降解速率温度和平衡终止降解温度与NR胶乳相近 ;LPNR胶乳的热稳定性比NR胶乳差。The thermal degradation of LPNR latex and NR latex in the nitrogen was investigated by TGA and thermoconductive TGA.The results showed that the thermal degradation process and reaction order of LPNR latex were similar to those of NR latex,and the thermal degradation rate increased a little as the temperature rising increased;the balanced temperature for starting degradation of NR latex was higher,and the balanced temperature for the maximum degradation rate and the balanced temperature for ending degradation of LPNR latex were similar to those of NR latex;and the thermal stability of LPNR latex was poorer than that of NR latex.

关 键 词：低蛋白质LPNR胶乳 NR胶乳 热降解性能 热重分析 热降解率 

分 类 号：TQ330[化学工程—橡胶工业]