【作者】 尹浩；

【导师】 周鲁；

【作者基本信息】 四川大学 ， 应用化学， 2000， 硕士

【摘要】 本文研究了解析复杂体系的热分析曲线方法。化学计量学在分析复杂体系的领域中应用十分广泛，可是尚未应用于热分析复杂体系的解析工作中，本文希望利用化学计量学的方法对复杂体系的热分析曲线进行解析。在研究过程中首先分析了热分析曲线的原理，发现化学计量学未能在热分析中得到应用的原因是热分析数据属于非线性体系，常见的化学计量学方法都不适合于解析这样的体系。造成体系非线性的原因主要是由于在热分析的测量过程中，样品的量在不断变化。但是在一定的条件下，即在时间或温度变化范围很小的微观范围内，反应物的量是可以看作近似不变的，整个热分析曲线可以看作若干个这样微观体系的组合。非线性的热分析体系可以通过这样的处理变为近似线性的体系，而这样的体系就可以使用化学计量学的方法对其进行解析，再将解析结果组合起来，就可以得到整条曲线的解析结果。还分析了近似体系的特点，确定其具有黑色体系的特征，目标因子分析法是解析这种体系的合适方法。为了验证方法是否可行，使用新方法对硫酸铝和硫酸镍混合体系的DSC曲线进行解析，解析的过程中首先确定了微观体系的范围，即确定在什么样的范围内数据可以看作近似线性的，然后根据热分析曲线的原理建立了正确的目标检验向量，结果成功地将复杂体系曲线重叠部分进行分离，得到两种化合物各自独立曲线。本文还讨论了新方法使用的范围，并结合解析的过程讨论了反应物的性质、制备标准样品的填充物、样品的用量对解析结果的影响。这种新的解析方法目前还未见文献报道。更多还原

【Abstract】 This article studied on the method of resolving the complex thermal analysis system curve. Chemometrics is a method applied widely in many field of complex analysis systems. However, it doesn’t yet be applied in thermal analysis. This article want to resolve the complex thermal analysis system by Chemometrics method. In the research process, according to the principle of thermal analysis, we found that the data of thermal analysis system was non-linear, which was the reason Chemometric method couldn’t be applied in thermal analysis system. It was the no-linear reason of thermal analysis system that was the mass of sample change continually in measure process. However, it could be transformed into linear system. When the data was extracted from a small range of temperature or time, the mass of sample could be looked upon appro-ximately invariable. Under this condition, thermal analysis could be looked upon approximately linear. These microcosmic linear systems could be resolved by Chemometricsmethod. The whole data of thermal analysis could be looked upon combination of such microcosmic systems. Thess microcosmic systems were black systems. The Target Factor Analysis method was the proper method to resolve this microcosmic systems. In order to verify the new method, we selected NickelSulphate and Aluminum Sulphate mixture to resolve its DSC curves. By Target Factor Analysis method, we resolved the thermalanalysis curve of the mixture, and got the individual thermal analysis curve of each matter. Simultaneously, this articlediscussed the limit of the new method and the factors influencingthe method. This new method has not been reported on anyliterature by now.更多还原