聚丙烯腈在预氧化过程中的增重机理研究  

Sduty on weight-gain mechanism of PAN in preoxidation

作　　者：许志献[1] 张运申[2] 徐樑华[3] 金日光[3] 

机构地区：[1]安阳师范学院,安阳455000 [2]濮阳职业技术学院,濮阳457000 [3]北京化工大学化工资源综合利用国家重点实验室,北京100029

出　　处：《化工新型材料》2013年第8期145-147,共3页New Chemical Materials

基　　金：国家自然科学重点基金(50333060)

摘　　要：测定了PAN在空气条件下的TG及DSC。热失重曲线表明:在预氧化温度(300℃以前),PAN有增重现象,当升温速度为5℃/min,从室温升温至约45℃或升温时间约5min时,增重达到最高值(约增重3%)。随着温度的继续升高或升温时间的延长,开始失重。结合DSC曲线、X-射线光电子能谱(XPS)分析及傅里叶变换红外光谱(FT-IR)分析,对增重现象进行了研究。Measuring the TG of and DSC of the PAN in the air condition when the rate of temperature was 5℃ / min. Thermo-gravimetric curve showed that the PAN had weight-gain phenomenon before the preoxidation temperature （300℃）. The weight gain began at about 30℃ and reached a maximum（about 3%）at approximately 45℃. As the temperature continued to rise,weight loss was began gradually. Studing the phenomenon of weight gain on the basis of DSC curve, X-ray photoelectron spectroscopy（XPS）analysis and Fourier transform infrared spectroscopy（FT-IR）analysis and putting forward the mechanism of weight gain.

关 键 词：PAN 预氧化 增重 增重机理 

分 类 号：TQ325.8[化学工程—合成树脂塑料工业]