采用高能球磨法制备了．纳米铜／石蜡温敏复合材料。通过傅立叶变换红外光谱仪（FTIR）、X射线衍射仪（XRD）和高分辨透射电镜（TEM）等对复合材料进行丁成分、物相和微观形貌的分析研究，并测试了材料热膨胀性和热敏性。结果表明，复合材料主要由铜、石蜡及少量氧化亚铜组成。石蜡在铜粒表面包覆均匀，形成类似核-壳结构。铜粉和石蜡的质量比对复合材料热膨胀性和热敏性影响明显。
Thermo-sensitive copper/paraffin nanoeomposites were prepared by high energy ball milling. The composition, phase and micrnstrueture of the composites were analyzed hy means of Fourier transform infrared spectrometry（FTIR） , x-ray diffraction （XRD） and transmission electron microscopy（TEM）. The thermal expansion and thermal sensitivity of the materials were investigated. Results show that the phase of compositcs is mainly composed of copper and a small amount of cuprous oxide. Copper particles are homogeneously covered by paraffin, forming the core-shell-like structure. The mass ratio of copper to paraffin has an obvious influence on thermal expansion and thermal sensitivity of the composites.
参考文献
| [1] | Carlen E T;Mastrangelo C H.Paraffin actuated surface micromachined valves[A].USA,IEEE Press,2000:381-385. |
| [2] | Robin H. Liu;Justin Bonanno;Jianing Yang;Ralf Lenigk;Piotr Grodzinski .Single-use, thermally actuated paraffin valves for microfluidic applications[J].Sensors and Actuators, B. Chemical,2004(2/3):328-336. |
| [3] | Svedberg M;Nikolajeff F;Thornell G .On the integration of flexible circuit boards with hot embossed thermoplastic structures for actuator purposes[J].Sensors and Actuators, A. Physical,2006(2):534-547. |
| [4] | Marcus Lento;Roger Boden;Urban Simu;Klas Hjort;Greger Thornell;Jan-Ake Schweitz .A Polymeric Paraffin Microactuator[J].Journal of Microelectromechanical Systems: A Joint IEEE and ASME Publication on Microstructures, Microactuators, Microsensors, and Microsystems,2008(5):1172-1177. |
| [5] | A. Malfliet;G. Deferme;L. Stappers .Synthesis and Characterization of Composite Coatings for Thermal Actuation[J].Journal of the Electrochemical Society,2007(1):D50-D56. |
| [6] | Himanshu J. Sant;Tammy Ho;Bruce K. Gale .An in situ heater for a phase-change-material-based actuation system[J].Journal of Micromechanics and Microengineering,2010(8):085039-1-085039-7. |
| [7] | GoldschmidtbSing F;Katus P;Geipel A.A novel self-heating paraffin membrane micro-actuator[A].USA,IEEE Press,2008:531-534. |
| [8] | Boden R;Letho M;Schweitz J.A paraffin driven linear microactuator for high force and large displacement applications[A].Germany:Actuator,2006:720-723. |
| [9] | Ahmed Elgafy;Khalid Lafdi .Effect of carbon nanofiber additives on thermal behavior of phase change materials[J].Carbon: An International Journal Sponsored by the American Carbon Society,2005(15):3067-3074. |
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