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Effect of activated carbon particle size on the thermo-foaming of aqueous sucrose resin and properties of the carbon foams

机译：活性炭粒径对水性蔗糖树脂热发泡和碳泡沫性能的影响

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摘要

The carbon foams prepared by the thermo-foaming of dispersions of activated carbon (AC) powder of various average particle sizes (4.9 to 15 μm) in an aqueous sucrose resin were characterized. The stability of the wet foams increased with the decrease in the AC particle size as finer particles preferentially adsorbed on the air-resin interface. The particle agglomeration leading to the foam collapse was observed at lower AC powder to sucrose weight ratios with the finer powders. The cell size (0.33-2.34 mm), foam density (0.1151-0.2281 g/cm~3), and compressive strength (0.16-2.77 MPa) of the carbon foams depend on the AC particle size as well as the AC powder to sucrose weight ratio. The thermal conductivity of the carbon foams (0.036-0.049 W m~(-1) K~(-1)) was much lower than that of the vitreous carbon foams of similar densities. The foams were fire resistant and amenable to machining with the conventional machines and tool.
机译：表征了通过在水性蔗糖树脂中对各种平均粒径（4.9至15μm）的活性炭（AC）粉末的分散体进行热发泡而制备的碳泡沫。湿泡沫的稳定性随着AC粒径的减小而增加，因为更细的颗粒优先吸附在空气树脂界面上。在较低的AC粉末与蔗糖的重量比与较细的粉末之间观察到了导致泡沫破裂的颗粒团聚。碳泡沫的泡孔尺寸（0.33-2.34 mm），泡沫密度（0.1151-0.2281 g / cm〜3）和抗压强度（0.16-2.77 MPa）取决于AC颗粒尺寸以及蔗糖的AC粉重量比。碳泡沫（0.036-0.049 W m〜（-1）K〜（-1））的热导率远低于类似密度的玻璃碳泡沫。泡沫是耐火的，并且适合用常规机器和工具进行机加工。

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  • 来源
    《Journal of Materials Research》 |2015年第1期|46-54|共9页
  • 作者

    Rajaram Narasimman; Sujith Vijayan; Kuttan Prabhakaran;

  • 作者单位

    Department of Chemistry, Indian Institute of Space Science and Technology, Thiruvananthapuram 695 547, India;

    Department of Chemistry, Indian Institute of Space Science and Technology, Thiruvananthapuram 695 547, India;

    Department of Chemistry, Indian Institute of Space Science and Technology, Thiruvananthapuram 695 547, India;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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  • 正文语种 eng
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