以天然沥青岩为原料制备高压缩强度的泡沫炭

Synthesis of carbon foam with high compressive strength from an asphaltite pitch

摘要: 以安纳托利亚东南部的天然沥青岩为原料制备泡沫炭。所制泡沫炭的平均孔径和密度分别为150 μm和800 kg/m3。主要研究了压力、温度、泄压时间及在最高温度时的停留时间对泡沫形成的影响，同时还评价了炭化过程对泡沫结构的影响。主要研究了压力、温度、泄压时间及在最高温度时的停留时间对泡沫炭进行了表征，并进行了密度及抗压强度分析。结果表明，1 323 K炭化后，泡沫炭压缩强度由10 MPa增加到18.7 MPa。沥青的灰分含量（41.76%）对泡沫炭的密度和压缩强度起重要作用。

Abstract: Carbon foams were synthesized using an asphaltite pitch as a carbon precursor. The effects of foaming conditions and carbonization on the pore structures and physical properties of carbon foams were investigated. Results indicate that the average pore size and density of as-synthesized carbon foams were about 150 μm and 800 kg/m3, respectively. The compressive strength of the carbon foam increased from 10 to 18.7 MPa after carbonization at 1323K. The high ash content of (41.76%) the pitch plays an important role on the density and compressive strength of carbon foams.