【摘要】 以十二烷基苯磺酸钠（SDBS）和Span-40表面活性剂为添加剂,AR沥青为原料,制备炭素泡沫材料,测定了材料的体积密度、显气孔率、压缩强度、常温热导率以及微晶结构参数,研究了添加表面活性剂后AR沥青的流变性能和炭素泡沫材料孔胞结构的变化.结果表明,表面活性剂使炭素泡沫的平均孔径变小,孔径分布趋于均匀,韧带的层片织构排列更为规整、致密.添加SDBS的炭素泡沫,孔壁较薄,开孔率较高,具有较低的体积密度（0.36 g/cm³）、较高的显气孔率（83.35%）、较小的层片间距d₀₀₂（0.3366 nm）、较高的常温热导率（55.96 W/m·K）和比热导率（155.44（W/m·K）/（g/cm³））.添加Span-40对炭素泡沫的体积密度、显气孔率和热导率的影响较小,但是使石墨化度提高,使其具有较高的压缩强度（2.39 MPa）.更多还原

【Abstract】 The carbon foam were prepared by self-bubbling at high pressure from AR pitch added sodium dodecyl benzene sulfonate and Span-40,respectively.The bulk density,pore rate,compressive strength,thermal conductivity at room temperature and crystallitic parameters of carbon foam were mea- sured.The rheological properties of AR pitch and pore structure of carbon foam were investigated.The results show that carbon foam added surfactants exhibits smaller cell size,more uniform pore distribution and regular ligament than that of AR pitch-derived carbon foam.Carbon foam added sodium dodecyl benzene sulfonate displays thinner cell wall,more open-cell structure and low bulk density（0.36g/cm³）, high pore rate（83.35%）,low interlayer d-spacings(d₀₀₂)（0.3366 nm）,high thermal conductivity（55.96 W/m·K）and specific thermal conductivity（155.44（W/m·K）/（g/cm³））.By contrast,carbon foam added Span-40 displays higher graphitization degree and compressive strength（2.39 MPa）.更多还原