中文摘要：

以AR沥青为原料,利用高压釜在不同恒温条件下制备了炭泡沫,并测定了其孔结构、体积密度、显气孔率、压缩强度、常温热导率以及微晶参数。结果表明：相对于短恒温时间,长恒温时间制得的炭泡沫孔径大（412nm）、显气孔率高（83.82%）、体积密度小（0.34g/cm3）、压缩强度高（4.92MPa）,多孔连通结构更丰富。经过石墨化处理后,石墨泡沫呈现出较高的常温热导率（71.34W/（m.K））和较小的层片间距d002（0.33556nm）。石墨泡沫的常温比导热率能达到210（W.（m.K）^-1）/（g.cm^-3）,是铜的5倍,铝的4倍。

英文摘要：

Carbon foams were prepared from AR pitch in a high pressure/high temperature reactor under different heating conditions. Their pore structure,bulk density,porosity,compressive strength,thermal conductivity,and crystallite size parameters were measured. Foams produced using a long time at a constant foaming temperature exhibit bigger pore size （412 nm）,higher porosity （83.82%）,lower bulk density （0.34 g/cm3）,higher compressive strength （4.92 MPa）,and more interconnected pores than that produced in a short time at the same constant foaming temperature, which exhibit high thermal conductivity （71.34 W/（m-K） ） and low interlayer d-spacing （don） （0. 335 56 nm） after graphitization at 2 800 ℃（2. The specific thermal conductivity of graphite foams can reach 210 （W. （m. K）^-1/（ g·cm^-3）, which is about five times greater than copper and four times greater than aluminum.