DSC曲线的纵坐标热流速率的单位μV具体如何换算成mW/g

最新回复

• thereyoube (2010-5-28 00:20:05)

  这说来话长了，uV对应于热偶的温度值，DTA探测的是DeltaT，也就是温度差，通过标样和公式换算得到热流值，热流型DSC的转换，TA的仪器介绍里有这个公式的表达式。附上文献一篇，供你参考。
  
  朋友，看看这个资料也许对你有帮助，有问题大家在交流！
  
  Differential scanning calorimetry-Fundamental overview
  
  cuturl('http://www.antpedia.com/?uid-799-action-viewspace-itemid-72305')

• Andrew (2010-5-31 16:58:21)

  国外厂家的热线，下面是回复
  Thank you for contacting the application support hotline. The DSC measurement goes into two very simple relationships.
  
  1 watt = 1 amp (current) * 1 volt
  
  In a DSC, a very stable current source is used, thereby keeping current as a fixed parameter throughout the DSC experiment. From the above equation one can then calculate the total watts. The Watt is then divided by the total sample size entered into the software.
  
  When you integrate an area, the area is integrated on a time scale using the relationship of 1Watt = 1Joule/second.
  
  感觉理解下来，也可以用U的平方除以电阻，就换算成功率单位了，再通过积分除以质量。