Multifractal analysis of fracture morphology of poly(ethylene-co-vinyl acetate)/carbon black conductive composite

✍ Scribed by Yong-Hai Zhang; Bao-Feng Bai; Jing-Bo Chen; Chang-Yu Shen; Jian-Qiang Li

• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 454 KB
• Volume: 256
• Category: Article
• ISSN: 0169-4332
• DOI: 10.1016/j.apsusc.2010.05.042

✦ Synopsis

In this paper, based on scanning electron microscope (SEM), the fracture morphology of poly(ethylene-co-vinyl acetate)/carbon black (EVA/CB) conductive composite with various cross-linkers 2,4-di(2-phenylisopropyl) phenol (DCP) contents were analysed by multifractal analysis. The relationship among the multifractal spectrum, cross-linker DCP content, the fracture morphology, fracture process and some mechanical property were discussed. The results showed that the larger the width ˛( ˛= ˛max -˛min ) of the multifractal spectra f(˛), the more nonuniform the fracture surface morphology, in other words, the more the roughness. Moreover, the width ˛( ˛= ˛max -˛min ) of the multifractal spectra f(˛) is the result of competition between ductile fracture and brittle fracture. Also, some mechanical property will correspondingly change when various cross-linker DCP contents were added. Multifractal analysis showed that the spectrum width ˛( ˛= ˛max -˛min ) of the multifractal spectra f(˛) could be used to characterize the surface morphology and mechanical property of EVA/CB conductive composite, quantitatively.