闪光法测试压缩膨胀石墨热导率探讨
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摘要
闪光法是广泛使用的测量材料的热扩散系数的方法。压缩膨胀石墨是各向异性的一种高导热复合材料。理论上闪光法并不适用于测试复合材料的热导率,但在实际的研究工作中该方法被广泛采用。本研究用闪光法测试了不同厚度和密度的压缩膨胀石墨,使用单因素方差分析,发现在实验的范围内样品厚度对其测量数据并无显著影响。结合复合材料的结构特点,我们认为闪光法可用于压缩膨胀石墨的导热测试。同时也发现密度对压缩膨胀石墨导热性影响显著。
引文
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[3]Dedov A V.Sorption properties of thermally expandedgraphite[J].Chemistry and Technology of Fuels andOils,2001,37(2):134-135.
[4]陈志刚,张勇,杨娟等.膨胀石墨的制备、结构和应用.江苏大学学报(自然科学版)[J],2005,26(3):248-252.
[5]吕超,王煊军,吕晓猛.微波膨化对膨胀石墨性能影响分析[J].工业技术,2013,8:109-110.
[6]曹乃珍,温诗铸,沈万慈.膨胀石墨的微观结构及吸附性能[J].新型碳材料,1995,4:51-53.
[7]Sykam Nagaraju,Kamal KKar.Rapid synthesis of exfoliated graphite by microwave irradiation and oil sorption studies[J].Materials Letters,2014,117:150-152
[8]IM Inuwa,De-Yi Wang,S LWong,et al.Influence of exfoliated graphite nanoplatelets on the flammability and thermal properties of polyethylene terephthalate/polypropylene nanocomposites[J].Polymer Degradation and Stability,2014,100:137-148.
[9]Mesalhy O,LafdiK,ElgafyA.Carbon foam matrices saturated with PCM for thermal protection purpose[J].Carbon,2006,44(10):2080-2088.
[10]Andrew Mills,Mohammed Farid,Said Al-Hallaj,et al.Thermal conductivity enhancement of phase change materials using a graphite matrix[J].Applied Thermal Engineering,2006,26(14-15):652-1661.
[11]Ju-Lan Zeng,Shuang-Hao Zheng,Sai-BoYu,et al.Preparation and thermal properties of palmitic acid/polyaniline/exfoliated graphite nanoplatelets form-stable phase change materials[J],Applied Energy 2014,115(15):603-609.
[12]Su-GwangJeong,Okyoung Chung,Sumin Kim,et al.Improvement of the thermal properties of Bio-based PCM using exfoliated graphite nanoplatelets[J].Solar Energy Materials and Solar Cells,2013,117:87-92.
[13]Wen-Ying Zhou.Shu-Hua Qi,Hong-Zhen Zhao,Nai-Liang Liu.Thermally conductive silicone rubber reinforced with boron nitride particle[J].Polym.Compos.,2007,28:23-28.
[14]刘芸,师文生,任巍,张良莹.激光脉冲法研究多孔SiO_2薄膜的纵向热导率[J].西安交通大学学报,1998,32(9):105-110.
[15]M.Bonnissel,L Luo,DTondeurb.Compacted exfoliated natural graphite as heat conduction medium.Carbon 2001;39:2151-2161.
[16]易静,袁观明,李轩科,等.大直径沥青基炭纤维/ABS树脂高导热复合材料的制备与表征[J].新型炭材料,2015,30(1):63-70.
[17]Niu Hu,Hongda Du,Sum Wai Chiang,et al.Prediction of interfacial thermal resistance of carbon fiber in one dimensional fiber-reinforced composites using laser flash analysis[J].2015,110:69-75.
[18]WJParker,RJJenkins,CPButler,GL Abbott.Flash method of determining thermal diffusivity,heatcapacity,andthermal conductivity[J].J.Appl.Phys.,1961,32(9):1679-1684.
[19]刘振学,黄仁和,田爱民.实验设计与数据处理[M].北京,化学工业出版社,2005:40-47.
[20]Po-Hsiu Chen,D D L Chung.Thermal and electrical conduction in the compaction direction of exfoliated graphite and their relation to the structure[J],Carbon,2014,77:538-550.