黑龙江科技大学学报
黑龍江科技大學學報
흑룡강과기대학학보
Journal of Heilongjiang Institute of Science and Technology
2015年
3期
247-250,255
,共5页
电化学法%可膨胀石墨%无硫%HClO4%CH3 COOH
電化學法%可膨脹石墨%無硫%HClO4%CH3 COOH
전화학법%가팽창석묵%무류%HClO4%CH3 COOH
electrochemical method%expandable graphite%sulfur-free%HClO4%CH3 COOH
以75μm天然鳞片石墨为原料、HClO4-CH3 COOH混合酸为电解液,采用电化学法制备可膨胀石墨。通过单因素实验分析影响因素对石墨膨胀容积的影响,并对制得的可膨胀石墨和膨胀石墨的形貌、结构进行SEM和XRD表征,以及含硫量测定。结果表明：无硫可膨胀石墨的最佳制备条件为：石墨(g)与电解液(mL)配比1∶7,HClO4(mL)与CH3COOH(mL)体积比4∶1,电流密度0.06 A/cm2,反应温度20℃,反应时间60 min,电解液质量分数70%。制得无硫可膨胀石墨的膨胀容积为150 mL/g。该研究为无硫可膨胀石墨的制备提供了一种途径。
以75μm天然鱗片石墨為原料、HClO4-CH3 COOH混閤痠為電解液,採用電化學法製備可膨脹石墨。通過單因素實驗分析影響因素對石墨膨脹容積的影響,併對製得的可膨脹石墨和膨脹石墨的形貌、結構進行SEM和XRD錶徵,以及含硫量測定。結果錶明：無硫可膨脹石墨的最佳製備條件為：石墨(g)與電解液(mL)配比1∶7,HClO4(mL)與CH3COOH(mL)體積比4∶1,電流密度0.06 A/cm2,反應溫度20℃,反應時間60 min,電解液質量分數70%。製得無硫可膨脹石墨的膨脹容積為150 mL/g。該研究為無硫可膨脹石墨的製備提供瞭一種途徑。
이75μm천연린편석묵위원료、HClO4-CH3 COOH혼합산위전해액,채용전화학법제비가팽창석묵。통과단인소실험분석영향인소대석묵팽창용적적영향,병대제득적가팽창석묵화팽창석묵적형모、결구진행SEM화XRD표정,이급함류량측정。결과표명：무류가팽창석묵적최가제비조건위：석묵(g)여전해액(mL)배비1∶7,HClO4(mL)여CH3COOH(mL)체적비4∶1,전류밀도0.06 A/cm2,반응온도20℃,반응시간60 min,전해액질량분수70%。제득무류가팽창석묵적팽창용적위150 mL/g。해연구위무류가팽창석묵적제비제공료일충도경。
This paper is devoted to an experimental study on the preparation of the sulfur-free ex-pandable graphite using HClO4 and CH3 COOH as electrolyte, the 75 μm natural flake graphite as raw material and employing electrochemical method. The study involves analyzing the influence factors on the expansion volume( EV) by single factor experiments and characterizing the morphology and structure of expandable graphite and expanded graphite by SEM and XRD, and determining the content of sulfur. The study suggests that the optimum preparation conditions for sulfur-free expandable graphite are: graphite (g)∶electrolyte(mL) =1∶7, HClO4(mL)∶CH3COOH(mL) =4∶1,current density of 0. 06 A/cm2,reac-tion temperature of 20 ℃, reaction time of 60 min, the concentration of mixed acid of 70%, and the maximum EV of up to 150 mL/g. The study provides a way for the preparation of sulfur free and expand-able graphite.
