热分析在化学分析中的应用.doc

热分析在化学分析中的应用 摘 要 热分析（Thermal analysis）是在程序控制温度的条件下测量物质的物理性质与温度关系的一种技术。因其具有方法灵敏、快速、准确等优点，该技术及其分析仪器也得到快速发展，使其成为各学科领域的通用技术。热分析的应用范围十分广泛，如在高分子材料、医药、陶瓷、水泥、合金、矿物、催化剂等诸多领域。本文用Diamond TG/DTA6000综合热分析仪，在确定合适的升温速率后，运用差热分析法和热重法为实验手段对不同类型样品（硝酸铵、壬二酸、云冈原煤、CuSO4·5H2O）进行热分析；以绝缘漆包线为原料，讨论了热解速率对热分析结果的影响。通过分析实验所得结果对其中的过程进行分析，对壬二酸的分析知热分析能用于物质的纯度鉴定。对另三个样品的分析得到热分析可以应用于高分子材料等领域，成为其重要的研究、分析方法。 关键字：热分析；化学分析；应用 Thermal Analysis Application in Chemical Analysis Abstract Thermal analysis is a technology which can measure the relationship between the physical properties and temperature of the substance under the process controlling the temperature. Because of its sensitive, rapid and accuration, this technology and its instrumentsthe have made rapid development, making the general technical disciplines. The application scope of thermal analysis is very extensive, such as polymers, pharmaceuticals, ceramics, cement, alloys, minerals, catalysts and other areas, In this paper, we use Diamond TG/DTG6000 comprehensive thermal analyzer, after making sure the right heating rate, using different analysis and thermal gravimetric analysis make thermal analysis to different types of samples(ammonium nitrate, azelaic acid, Yungang coal, Copper Sulfate Pentahydrate), using insulated magnet wire-bit raw materials, having discussed the influencial of the pyrolysis rate to the results of thermal analysis. Obtain the results by analysis theexperimental analysis of the process, the analysis of azelaic acid known thermai analysis can be used in the physical purity. The other three samples analysis of thermal analysis can be applied to polymer materials and other fields, to be an important research and analysis method. Keywords:Thermal analysis; Chemical analysis; Application 目录 摘 要 I Abstract II 目录 III 1文献综述 3 1.1 研究意义 3 1.2热分析的发展...... .......................3 1.3热分析技术的分类及影响因素 3 1.3.1差热分析法 3 1.3.2 热重分析法 3 1.3.3 差示扫描量热法 3 1.3.4 热分析法的影响因素 3 1.4热分析方法应用领域 3 1.5实验研究内容 3 2 实验部分 3 2.1 实验原料 3 2.1 实验设备 3 2.3 实验步骤 3 2.3.