示差扫描热量计测量结果不确定度的评定  

作　　者：陈扬[1] 

机构地区：[1]江苏省计量科学研究院

出　　处：《科技创新与应用》2019年第35期16-17,共2页Technology Innovation and Application

摘　　要：示差扫描热量计是在程序控制温度下,测量试样与参比物之间的加热功率差或温差的仪器。根据仪器测量原理的不同,可分为功率补偿式示差扫描热量计和热流式示差扫描热量计。示差扫描热量计是一种多功能的量热仪器,可测定物质的熔融热、相变热、结晶热等,广泛用于化工、纺织、药物、高分子等领域,也适用于新材料热物性和化学性质的测定。示差扫描热量计测量的温度和热量的准确与否,直接影响试样的检测结果。文章依据JJG 936-2012《示差扫描热量计》检定规程,对示差扫描热量计测量结果进行不确定度分析评定。The differential scanning calorimeter is an instrument for measuring the heating power difference or temperature difference between the sample and the reference under the temperature controlled by the program. According to the different measuring principle of the instrument, it can be divided into power compensation differential scanning calorimeter and heat flow differential scanning calorimeter. Differential scanning calorimeter is a multi-functional calorimetric instrument, which can measure the melting heat, phase change heat, crystallization heat and so on. It is widely used in the fields of chemical industry, textile, medicine,polymer and so on. It is also suitable for the determination of thermophysical and chemical properties of new materials. Whether the temperature and heat measured by the differential scanning calorimeter is accurate or not directly affects the test results of the sample. According to the verification regulation of JJG 936-2012 "Differential Scanning Calorimeter", this paper analyzes and evaluates the uncertainty of the measurement results of differential scanning calorimeter.

关 键 词：示差扫描热量计 标准物质 不确定度评定 

分 类 号：TH81[机械工程—仪器科学与技术]