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黄军同,刘明强,孙正红,侯小龙,李喜宝,陈智,胡智辉,马金婷,冯志军.鳞片石墨三辊研磨减薄制备低碳含碳耐高温材料用微纳米石墨薄片的技术研究[J].稀有金属材料与工程(英文),2020,49(2):682~687.[Juntong Huang,Mingqiang Liu,Zhenghong Sun,Xiaolong Hou,Xibao Li,Zhi Chen,Zhihui Hu,Jinting Ma and Zhijun Feng.Micro-Nano Graphite Sheets for Low Carbon Carbon-Containing Refractories by Exfoliating Thick Graphite Flakes via Three-Roll Milling[J].Rare Metal Materials and Engineering,2020,49(2):682~687.]
Micro-Nano Graphite Sheets for Low Carbon Carbon-Containing Refractories by Exfoliating Thick Graphite Flakes via Three-Roll Milling
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Received:April 24, 2019  Revised:May 09, 2019
DOI:
Key words: flake graphite, Three-Roller Milling, graphite nanoplatelets, phenolic formaldehyde resin, low-carbon carbon-containing refractories
Foundation item:国家自然科学(51772140和51862024)、航空科学(2016ZF56019)和上海航天科技创新(SAST2017-116)
Author NameAffiliation
Juntong Huang,Mingqiang Liu,Zhenghong Sun,Xiaolong Hou,Xibao Li,Zhi Chen,Zhihui Hu,Jinting Ma and Zhijun Feng  
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Abstract:
      Based on the theoretical analysis of the application of Three-Roller Milling (TRM) exfoliating technology in low-carbon carbon-containing refractories, graphite nanoplatelets (GNP) were obtained by exfoliating flake graphite (FG) in phenol formaldehyde resin (PF) via TRM in this study. The effects of the exfoliating times on the structure and morphology of the products were investigated. By using alcohol as the solvent, the product exfoliated from FG by TRM was soaked and washed by ultrasound to remove PF, followed by drying, and then characterized by XRD, SEM, TEM and particle size analysis. It was found that the original FG with 150 μm in size and several microns in thickness was constantly exfoliated. When the exfoliating times were increased gradually to 8 or even 16 times, GNPs were obtained with a size of 10-30 μm and a thickness of 30-100 nm. This technical ideal can be applied in low-carbon and ultra-low carbon refractory industries to reduce carbon content, as well as in resin based carbon fiber composites for aviation industry to improve resin strength.