喷雾造粒白炭黑微球的烧结行为  

Sintering behavior of white carbon black particles by spray pelletization

作　　者：杜令忠[1] 张伟刚[1] 张登君[1] 李报厚[1] 

机构地区：[1]中国科学院工程研究所多相复杂系统国家重点实验室,北京100080

出　　处：《材料热处理学报》2008年第4期25-28,共4页Transactions of Materials and Heat Treatment

摘　　要：采用差式扫描热分析(DSC)和高温动态X射线衍射(XRD)对喷雾造粒白炭黑微球的烧结行为进行了研究。结果表明,白炭黑在高温下发生了非晶向晶态的转变,喷雾造粒白炭黑微球的转变温度比白炭黑粉末低80℃。通过Kissinger方程和Doyle-Ozawa方程计算,喷雾造粒微球的晶化表观活化能为310kJ/mol,随着非晶转变百分比增加,晶化激活能逐渐减小。The sintering behavior of white carbon powders by spray pelletization is investigated by DSC and high temperature dynamic XRD. The results reveal that transformation from amorphous white carbon black to crystalline occurs at high temperature. And the transformation temperature of the pelleted particles is 80℃ lower than that of the white carbon black powder. Using Kissinger and Doyle-Ozawa methods, the apparent activation energy of the pelleted particles is 310kJ/mol, and with increase of the crystallized fraction, the crystallization energy decreases.

关 键 词：喷雾造粒 烧结 晶化 激活能 

分 类 号：TQ330.38[化学工程—橡胶工业]