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鱗片石墨三輥研磨減薄制備低碳含碳耐高溫材料用微納米石墨薄片的技術(shù)研究
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南昌航空大學(xué)材料科學(xué)與工程學(xué)院

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國家自然科學(xué)(51772140和51862024)、航空科學(xué)(2016ZF56019)和上海航天科技創(chuàng)新(SAST2017-116)


Micro-Nano Graphite Sheets for Low Carbon Carbon-Containing Refractories by Exfoliating Thick Graphite Flakes via Three-Roll Milling
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The School of Materials Science and Engineering,Nanchang Hangkong University

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    摘要:

    本論文對三輥研磨剝離技術(shù)在低碳含碳耐火材料中應(yīng)用進(jìn)行理論分析的基礎(chǔ)上,以鱗片石墨(FG)為原料、酚醛樹脂(PF)作為研磨介質(zhì),采用三輥研磨機(jī)差速剝離得到微納米石墨薄片(GNP),研究了剝離次數(shù)對剝離產(chǎn)物結(jié)構(gòu)和形貌的影響。以酒精為溶劑,對FG經(jīng)三輥研磨剝離得到的產(chǎn)物進(jìn)行浸泡、超聲清洗以排除PF后再干燥,并對產(chǎn)物進(jìn)行了XRD、SEM、TEM和粒度分析等表征,研究發(fā)現(xiàn)尺寸~150微米級、厚度為幾微米級FG在剝離過程中厚度不斷減薄,尺寸也有減小,當(dāng)剝離次數(shù)逐漸增加大到8次甚至16次時,剝離得到了尺寸為10-30 μm、厚度達(dá)30-100 nm的GNP。相關(guān)技術(shù)能夠應(yīng)用到低碳、超低碳耐火材料工業(yè)用以降低碳含量以及推廣到航空工業(yè)樹脂基碳纖維復(fù)合材料中用以改善樹脂界面結(jié)合強(qiáng)度。

    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.

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黃軍同,劉明強(qiáng),孫正紅,侯小龍,李喜寶,陳智,胡智輝,馬金婷,馮志軍.鱗片石墨三輥研磨減薄制備低碳含碳耐高溫材料用微納米石墨薄片的技術(shù)研究[J].稀有金屬材料與工程,2020,49(2):682~687.[Juntong Huang, Mingqiang Liu, Zhenghong Sun, Xiaolong Hou, Xibao Li, Zhi Chen, Zhihui Hu, Jinting Ma, 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.]
DOI：10.12442/j. issn.1002-185X. QH20190059

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  • 收稿日期:2019-04-24
  • 最后修改日期:2019-05-09
  • 錄用日期:2019-10-23
  • 在線發(fā)布日期: 2020-03-12
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