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Sul, I.H., Youn, J.R. and Song, Y.S. (2011) Quantitative Dispersion Evaluation of Carbon Nanotubes Using a New Analysis Protocol. Carbon, 49, 1473-1478.
https://doi.org/10.1016/j.carbon.2010.12.017

has been cited by the following article:

  • TITLE: CVD Treatment of Carbon Fibers and Evaluation of Their Dispersion in CFRC

    AUTHORS: Chuang Wang, Bingliang Li, Lei Peng, Wenmin He, Liping Zhao, Kezhi Li

    KEYWORDS: Carbon Fiber, Chemical Vapor Deposition, Hydroxyethyl Cellulose, Dispersion

    JOURNAL NAME: Materials Sciences and Applications, Vol.8 No.8, August 18, 2017

    ABSTRACT: Carbon-fiber-reinforced cement-based (CFRC) composites is a promising functional material which can be used both in the military and civil fields against electromagnetic interference. However, it is essential to make carbon fibers dispersed uniformly during the preparation of CFRC. In this work, short carbon fibers were treated through Chemical Vapor Deposition (CVD) process at high temperature between 900°C and 1200°C under the protection of diluted nitrogen gas N2 to modify the surface of carbon fibers to further strengthen the bonding between carbon fibers and cement matrix. Natural gas (98% CH4) was used as a precursor. It was decomposed to produce an uneven layer of pyrocarbon that was deposited on the surface of carbon fibers. CVD-treated carbon fibers were pre-dispersed by using ultrasonic wave. Both hydroxyethyl cellulose (HEC) and silicon fume were used as dispersants and as admixtures. They helped CVD-treated carbon fibers distribute uniformly. The mass fraction of HEC was around 1.78% in the aqueous solution. Four methods, namely, the simulation experiment (SE) method, the scanning electron microscopy (SEM) method, the fresh mixture (FM) method, and the electrical resistivity measurement (ERM) method were, respectively, applied to evaluate fiber dispersion degree. Each method indicated its own advantages and disadvantages and it therefore catered for different conditions. Of the four evaluation methods, the SE method was the most convenient way to determine the pre-dispersion state prior to the preparation of CFRC composites. This method was helpful for predicting the subsequent dispersion state of carbon fibers in the cement matrix because it economized a large quantity of raw materials and time.