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.
Cao Liu, Zhang Dong
. Preliminary application of SBF-SEM in the characterization of thermal conductive network of GPCM[J]. New Chemical Materials, 2020
, 48(9)
: 260
-263
.
DOI: 10.19817/j.cnki.issn 1006-3536.2020.09.057
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