| 影响膨胀石墨体积的制备工艺研究 |
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| 引用本文： | 郭垒,张大志,徐铭,胡秀娟.影响膨胀石墨体积的制备工艺研究[J].化工科技,2011,19(5):35-38. |
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| 作者姓名： | 郭垒 张大志 徐铭 胡秀娟 |
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| 作者单位： | 南京理工大学化工学院,江苏南京,210094 |
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| 摘 要： | 采用HClO4/H3 PO4/CrO3氧化插层体系制备低温可膨胀石墨,通过对反应物用量、反应温度及反应时间、水洗温度及水洗程度、干燥温度、膨胀温度进行研究,确定了膨胀石墨体积的影响因素.结果表明:反应物m(C)∶m(HClO4)∶m(H3PO4)∶m(CrO3)=1∶3.0∶1.5∶0.8,反应温度45℃,反应时间70...
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| 关 键 词： | 可膨胀石墨 影响因素 膨胀石墨体积 |
The factors influencing expanded volume for preparation of expanded graphite |
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| GUO Lei,ZHANG Da-zhi,XU Ming,HU Xiu-juan.The factors influencing expanded volume for preparation of expanded graphite[J].Science & Technology In Chemical Industry,2011,19(5):35-38. |
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| Authors: | GUO Lei ZHANG Da-zhi XU Ming HU Xiu-juan |
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| Affiliation: | (College of Chemical Technology of Nanjing University of Science and Technology,Nanjing 210094,China) |
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| Abstract: | The expanded graphite was prepared by using HClO4/H3PO4/CrO3 as the oxidant and intercalation agent.The factors affecting the volume of expanded graphite were obtained by studying reactants ratio,reaction temperature,reaction time,watered temperature,watered degree,dried temperature,expanded temperature.It was showed that m（C）∶m（HClO4）∶m（H3PO4）∶m（CrO3）=1∶3.0∶1.5∶0.8,the reaction temperature was 45 ℃,reaction time was 70 min,the graphite was watered at 0~20 ℃ and stopped until its pH was 5~6,dried at 60 ℃,then expanded at 300 ℃,the volume of expanded graphite was 350 mL/g.The expanded graphite was completely expanded at 500 ℃ and the largest volume was 550 mL/g. |
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| Keywords: | Expanded graphite Affecting factors Volume of expanded graphite |
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