保护热板法测量参考物质导热率的研究  

Research of Guarded Hot Plate Measuring Thermal Conductivity of Reference Material

作　　者：邓建兵[1] 张金涛[2] 舒水明[3] 段宇宁[2] 

机构地区：[1]航天材料及工艺研究所,北京100076 [2]中国计量科学研究院,北京100013 [3]华中科技大学,湖北武汉430074

出　　处：《计量学报》2009年第1期16-20,共5页Acta Metrologica Sinica

摘　　要：保护热板法是测量绝热材料导热率的一种绝对方法。介绍了实验装置的测量原理以及实验过程，采用德国国家物理技术研究院（PTB）的参考物质，在此装置上进行导热率测量实验。与欧洲十七个国家实验室和研究机构的测量结果进行了对比，该装置测量的结果处于比对结果的中间，合成相对标准不确定度为0.8×10-2。结果表明，该装置对此参考物质的测量结果具有较好的可靠性。Guarded hot plate is an absolute method of measuring thermal conductivity of insulators. The measuring principle and the experimental process of the guarded hot plate device are described. And the thermal conductivity of the reference material of the Physikaliseh-Technische Bundesanstalt （PTB） is measured by the device. The comparison of the results of the thermal conductivity measurements by the device with that of 17 European laboratories and institution shows that our measuring results is in the middle of measuring results, and the combined relative standard uncertainty is 0.8×10^-2. The results indicate that the measuring results of reference material by the device is credible, and our measurement level is on the international advanced level.

关 键 词：计量学 保护热板法 导热率 不确定度 

分 类 号：TB941[一般工业技术—计量学]