用扫描电子显微镜观察了A、B、C三种煤沥青的β—树脂以及热处理后的β—树脂的表面和断面,发现其断面是由许多球状颗粒组成。特别是沥青B的β—树脂的断面由许多类似类环形状的颗粒组成,在微小的区域内显示某种程度的三维有序。用透射电镜观察β—树脂的细粉,观察到选区衍射多晶衍射花样。 The surface and cross section of β-resin of A, B and C coal tar pitch and β-resin after heat treatment were observed by scanning electron microscope and found that the cross section was composed of many spherical particles. In particular, the cross-section of the β-resin of pitch B consists of a number of similar ring-like particles, exhibiting some degree of three-dimensional ordering in minute regions. Transmission electron microscopy was used to observe the fine powder of β-resin. A diffraction pattern of selected polycrystalline diffraction was observed.