作者：顼永亮, 周亚素, 王思
作者单位：东华大学环境科学与工程学院, 上海 201620
关键词：瞬态平面热源法;导热系数;校准方式;接触热阻;测试时间
摘要：
阐述基于瞬态平面热源法的TCI导热仪测试原理，通过对蒸馏水、Pyrex耐热玻璃、耐高温陶瓷、LAF6720泡沫材料导热系数的测量研究，分析影响TCI导热仪测试精度的因素。结果显示：TCI导热仪对于常见材料导热系数的测试结果具有较好的精度和可重复性，测试过程中需选择合适的校准方式，对固体材料需添加媒介以减小接触热阻。此外，对于测试时需添加触媒介质的固体材料连续测试时间不宜过长，最好不要超过20 min。
The influence factor analysis of testing material thermal conductivity with TCI thermal conductivity meter
XU Yongliang, ZHOU Yasu, WANG Si
College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
Abstract: This paper explained testing principle of TCI thermal conductivity meter based on the transient plane source method. Good accuracy and repeatability of the TCI were verified and proved by testing four reference materials: distilled water, LAF6720, Pyrex and pyroceram. The authors also studied the influence factor which may affect the accuracy when testing the materials with TCI. Results showed that choosing the appropriate calibration and reducing the thermal contact resistance are essential to improve the testing accuracy. Also, the duration of continuous testing which requires contact agent should not be too long, not more than 20 minutes preferably.
Keywords: transient plane source;thermal conductivity;calibration methods;thermal contact resistance;testing time
2016, 42(7): 136-140 收稿日期: 2015-12-20;收到修改稿日期: 2016-2-28
基金项目:
作者简介: 顼永亮(1989-),男,河北石家庄市人,硕士研究生,专业方向为地源热泵回填材料热物性研究。
参考文献
[1] JANNOT Y, DEGIOVANNI A, PAYET G. Thermal cond uctivity measurement of insulating materials with a three layers device[J]. International Journal of Heat and Mass Transfer,2009,52(5):1105-1111.
[2] 陈则绍,葛新石,顾毓沁. 量热技术和热物性测定[M]. 北京:中国科学技术大学出版社,1990:79-80.
[3] 徐慧,杨杰. 瞬态热带法和瞬态平面法测量材料热传导系数[J]. 测控技术,2005,23(11):71-73.
[4] 陈桂生,廖艳,曾亚光,等. 材料热物性测试的研究现状及发展需求[J]. 中国测试,2010,36(5):5-8.
[5] 贾斐霖,李林,史庆藩. 稳态法测算导热系数的原理[J]. 材料科学与工程学报,2011(4):609-613.
[6] 固体热物理性质导论[M]. 北京:中国计量出版社,1987:271.
[7] 黄犊子,樊栓狮. 采用Hotdisk测量材料导热系数的实验研究[J]. 化工学报,2003,54(4):67-70.
[8] MIKULIĆ D, MILOVANOVIĆ B. TCI system for non-destructive determination of thermal properties of materials[C]//10th European Conference on Non-Destructive Testing. Moscow,2010:7-11.
[9] MATHIS N, CHANDLER C. Direct thermal conductivity measurement technique 6,676,287[P]. 2004-1-13.
[10] 陈昭栋. 平面热源法瞬态测量材料热物性的研究[J]. 电子科技大学学报(自然科学版),2004,33(5):551-554.
[11] 王补宣,韩礼钟,王维城,等. 同时测定热绝缘材料α和λ的常功率平面热源法[J]. 工程热物理学报,1980(1):80-87.
