摘要
采用NDJ—7旋转式粘度计分析了自主研发的含钽浸渍剂在一定温度范围(295～328K)的粘度特性,发现该温度范围内含钽浸渍剂具有较低的粘度和很好的流变性能。采用差示扫描量热法(DSC)研究了含钽浸渍剂(313K固化处理后)在373～1573K温度范围内不同升温速率的非等温热反应动力学,发现该浸渍剂热反应过程分为两个阶段。运用Kissinger微分法和Ozawa积分法计算了该浸渍剂热反应过程的反应活化能(Ea)与反应级数(n)。结果表明两种方法的Ea值相近。Kissinger微分法计算得第Ⅰ阶段Ea=49.34kJ·mol^1、n=1.83,第Ⅱ阶段Ea=425.58kJ·mol^1、n=1.32。
The viscosity of tantalum impregnant,which was researched by ourselves,was analysised in a cer- tain temperature range （295-328K） by NDJ-7 rotary viscometer. The results show that the tantalum impregnant is lower viscosity and better rheological properties in the temperature rang. Differential scanning calorimetry （DSC） was used to investigate the non-isothermal kinetics of the impregnant at different heating rates in the range of 373-1 573K. The results reveal that thermal reaction process of the impregnant is divided into two stages. Kissinger differential and Ozawa integral methods were used to caluculate the thermal reaction activation energy（Ea） and the reaction order（n） of the impregnant. The results show that （Ea） is similar according to the two methods. （Ea） and n of the stage Ⅰ and Ⅱ calculated by kissinger differential method are 49.34kJ/mol and 1.83,425.58kJ/mol and 1.32,respectively.
出处
《炭素》
2007年第3期12-16,共5页
Carbon
基金
国家重点基础研究发展规划项目2006CB600902
关键词
浸渍剂
粘度
差示扫描量热法
活化能
反应级数
impregnant
viscosity
non- isothermal kinetics
differential scanning calorimetry （DSC）
re- action activation energy
