化工新型材料

化工新型材料 ›› 2020, Vol. 48 ›› Issue (9) : 260-263. DOI: 10.19817/j.cnki.issn 1006-3536.2020.09.057

开发与应用

连续切片扫描电子显微镜在石墨烯相变复合材料导热骨架表征中的初步应用

曹流, 张东

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Preliminary application of SBF-SEM in the characterization of thermal conductive network of GPCM

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Received		Published
2020-01-24		2020-09-20
Issue Date	Revised Date
2020-10-20	2020-01-24

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摘要

连续切片扫描电子显微镜(SBF-SEM)三维重构技术是一种利用计算机图像处理方法获得材料三维空间结构的表征手段。通过SBF-SEM技术重构了冰偏析诱导自组装法石墨烯气凝胶(GA)的网络结构并研究了其对石墨烯相变复合材料(GPCM)热导率的影响。结果表明:该GA具有沿冰晶生长方向的取向结构,石墨烯片层间隙在50～150μm之间,并且该GA制备的GPCM的热导率也具有各向异性。为深入研究石墨烯骨架对GPCM导热改性机理提供了理论基础。

Abstract

Serial block-face scanning electron microscopy (SBF-SEM) 3D reconstruction technology is a method to obtain the 3D spatial structure of materials using computer image processing methods.The network structure of graphene aerogel (GA) fabricated by ice-segregation-induced self-assembly was reconstructed by SBF-SEM technology,and its effect on the thermal conductivity of graphene-based phase change material (GPCM) was studied.The results showed that GA had an orientation structure along the growth direction of ice crystals,the gap between the graphene sheets was between 50 and 150μm,and the thermal conductivity of the GPCM prepared by GA was also anisotropic.It provided a theoretical basis for the in-depth study of improvement mechanism of graphene skeleton on thermal conductivity of GPCM.

关键词

连续切片扫描电子显微镜 / 三维重构 / 石墨烯气凝胶 / 热导率

Key words

serial block-face scanning electron microscopy / three-dimensional reconstruction / graphene aerogel / thermal conductivity

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曹流, 张东. 连续切片扫描电子显微镜在石墨烯相变复合材料导热骨架表征中的初步应用[J]. 化工新型材料, 2020, 48(9): 260-263 DOI:10.19817/j.cnki.issn 1006-3536.2020.09.057

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参考文献

原文顺序 | 出版日期 | 本文引用

[1] Mu B,Li M.Fabrication and thermal properties of tetradecanol/graphene aerogel form-stable composite phase change materials[J].Scientific Reports,2018,8(1):1-14.
[2] Zhang Z,Wang J,Tang X,et al.Comparison study between mesoporous silica nanoscale microsphere and active carbon used as the matrix of shape-stabilized phase change material[J].Scientific Reports,2019,9(1):1-10.
[3] Vickery J L,Patil A J,Mann S.Fabrication of graphene-polymer nanocomposites with higher-order three-dimensional architectures[J].Advanced Materials,2009,21(21):2180-2184.
[4] Liu Z,Chen Z,Yu F.Enhanced thermal conductivity of microencapsulated phase change materials based on graphene oxide and carbon nanotube hybrid filler[J].Solar Energy Materials and Solar Cells,2019,192:72-80.
[5] Zhu X,Han L,Lu Y,et al.Geometry-induced thermal storage enhancement of shape-stabilized phase change materials based on oriented carbon nanotubes[J].Applied Energy,2019,254:113688.
[6] Zhou Y,Wang X,Liu X,et al.Polyurethane-based solid-solid phase change materials with halloysite nanotubes-hybrid graphene aerogels for efficient light-and electro-thermal conversion and storage[J].Carbon,2019,142:558-566.
[7] Du K K,Li Q,Lyu Y B,et al.Control over emissivity of zero-static-power thermal emitters based on phase-changing material GST[J].Light:Science and Applications,2017,6(1):e16194.
[8] Miranda K,Girard-Dias W,Attias M,et al.Three dimensional reconstruction by electron microscopy in the life sciences:an introduction for cell and tissue biologists[J].Molecular Reproduction and Development,2015,82(7-8):530-547.
[9] Muellerreichert T A.Three-dimensional reconstruction methods for Caenorhabditis elegans ultrastructure[J].Methods Cell Biol,2010,96(96):331-361.
[10] Wilke S A,Antonios J K,Bushong E A,et al.Deconstructing complexity:serial block-face electron microscopic analysis of the hippocampal mossy fiber synapse[J].Journal of Neuroscience,2013,33(2):507-522.
[11] Leighton S B.Sem images of block faces,cut by a miniature microtome within the SEM-a technical note[J].Scanning Electron Microscopy,1981,2:73-76.
[12] Denk W,Horstmann H.Serial block-face scanning electron microscopy to reconstruct three-dimensional tissue nanostructure[J].PLoS Biology,2004,2(11):e329.
[13] Cabezón I,Augé E,Bosch M,et al.Serial block-face scanning electron microscopy applied to study the trafficking of 8D3-coated gold nanoparticles at the blood-brain barrier[J].Histochemistry and Cell Biology,2017,148(1):3-12.
[14] Miyazaki N,Esaki M,Ogura T,et al.Serial block-face scanning electron microscopy for three-dimensional analysis of morphological changes in mitochondria regulated by Cdc48p/p97 ATPase[J].Journal of Structural Biology,2014,187(2):187-193.
[15] Cao L,Zhang D.Styrene-acrylic emulsion/graphene aerogel supported phase change composite with good thermal conductivity[J].Thermochimica Acta,2019,680:178351.