| 179 | 0 | 1 |
| 下载次数 | 被引频次 | 阅读次数 |
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)等对复合材料进行了成分、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。
Abstract：Thermo-sensitive copper/paraffin nanocomposites were prepared by high energy ball milling.The composition,phase and microstructure of the composites were analyzed by 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 composites 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.
[1]Carlen E T,Mastrangelo C H.Paraffin actuated surface micromachined valves[C]//Proceedings of the IEEE International Conference on Micro Electro Mechanical Systems(MEMS).USA:IEEE,2000:381-385.
[2]Liu R L,Bonanno J.Single-use,thermally actuated paraffin valves for microfluidic applications[J].Sensors and Actuators B,2004,98:328-336.
[3]Svedberg M,Nikolajeff F.On the integration of flexible circuit boards with hot embossed thermoplastic structures for actuator purposes[J].Sensors and Actuators A,2006,125:534-47.
[4]Lehto M,Boden R,Simu U,et al.A polymeric paraffin microactuator[J].Journal of Microelectromechanical Systems,2008,17(5):1172-1177.
[5]Malfliet A,Deferme G,Stappers L,et al.Synthesis and characterization of composite coatings for thermal actuation[J].Journal of The Electrochemical Society,2007,154(1):50-56.
[6]Sant H J,Ho T,Gale B K.An in situ heater for a phase-change-material-based actuation system[J].Journal of Micromechanics and Microengineering,2010,20(8):1-7.
[7]Goldschmidtbing F,Katus P,Geipel A,et al.A novel self-heating paraffin membrane micro-actuator[C]//Proceedings of the IEEE International Conference on Micro Electro Mechanical Systems(MEMS).USA:IEEE,2008:531-534.
[8]Boden R,Letho M,Schweitz J.A paraffin driven linear microactuator for high force and large displacement applications[C]//Proceedings of the 10th international Conference on New Actuators.Germany:Actuator,2006:720-723.
[9]Elgafy A,Lafdi K.Effect of carbon nanofiber additives on thermal behavior of phase change materials[J].Carbon,2005,43(15):3067-3074.
基本信息:
DOI：10.13289/j.issn.1009-6264.2012.07.007
中图分类号:TB383.1;TB333
引用信息:
[1]徐斌,楼白杨,董方亮.新型纳米铜/石蜡复合材料的制备及其热性能[J].材料热处理学报,2012,33(07):24-28.DOI:10.13289/j.issn.1009-6264.2012.07.007.
基金信息:
浙江省新材料及加工工程省重中之重学科开放课题(20110912);; 浙江省自然科学基金(Y4090298)