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Specific heat measurement method and differential scanning calorimetry

机译:比热测量方法和差示扫描量热法

摘要

PROBLEM TO BE SOLVED: To obtain a measuring method in which specific heat in a high-temperature region can be measured with high accuracy in the small number of measuring operations even when a temperature around a sample is not uniform. ;SOLUTION: A heat flux-type differential scanning calorimeter has a structure wherein a second heat flowmeter plate 2 on which two empty cells are arranged in a position No. 3 and a position No. 4 which are symmetric with a sample and a standard sample is installed at the lower part of a first heat flowmeter plate 1 on which the sample and the standard sample are arranged in a position No. 1 and a position No. 2, and the end part of the first heat flowmeter plate 1 and the end part of the second heat flowmeter plate 2 are brought thermally into contact with a soaking container 7 in a state thet the end parts are brought into contact with each other. In a process in which the soaking container 7 is heated at a set temperature change speed, the temperature difference between the sample arranged on the first heat flowmeter plate 1 and a reference sample arranged on the second heat flowmeter plate 2 and the temperature difference between the standard sample arranged on the first hear flowmeter plate 1 and the reference sample arranged on the second heat flowmeter plate 2 are measured simultaneously by using the heat flux-type differential scanning calorimeter. The value of the specific heat of the sample is found on the basis of their measured values and on the basis of the known specific heat value of the standard sample.;COPYRIGHT: (C)1999,JPO
机译:要解决的问题:获得一种测量方法,即使在样品周围的温度不均匀的情况下,也可以在少量的测量操作中以高精度测量高温区域的比热。 ;解决方案:一种热通量型差示扫描量热仪,其结构为:第二热流量计板2,其上的两个空单元布置在与样品和标准样品对称的位置3和位置4上在第一热流量计板1的下部安装有样品和标准样品,该第一热流量计板1的下部位于位置1和位置2,第一热流量计板1的端部和末端第二热流量计板2的一部分在其端部彼此接触的状态下与均热容器7热接触。在以设定的温度变化速度对均热容器7进行加热的过程中,配置在第一热流量计板1上的样品与配置在第二热流量计板2上的基准样品之间的温度差以及两者之间的温度差。通过使用热通量差示扫描量热计,同时测量布置在第一听力流量计板1上的标准样品和布置在第二热流量计板2上的参考样品。样品的比热值是根据其测量值和已知的标准样品的比热值得出的。版权所有:(C)1999,JPO

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