spherolites 怎么翻译?

来源:百度知道 编辑:UC知道 时间:2024/09/21 01:24:12

球状体,椭球体
【美】【俚】棒球

Studies on the synthesis of silicon-substituted polyaromatic mesophase from a coal tar hard pitch and phenylsilanes
J. Schwendinger;W.G. Zhang;K.J. Hüttinger(Institut für Chemische Technik;Universit?t Karlsruhe;Kaiserstr. 12;76128 Karlsruhe;Germany)
Formation of a silicon substituted polyaromatic mesophase was investigated by co pyrolysis of mixtures of a soft and a hard pitch with mono , di and tetraphenylsilane. The studies were performed in autoclaves at a constant argon pressure of 1?MPa and a temperature of 440?℃ using pyrolysis times of 5 and 10?h. With 2?% silicon in the starting mixtures a silicon substituted mesophase is not formed. Studies with the hard pitch and lower silicon additions of 1.0 and 0.5?% clearly show formation of a silicon substituted mesophase, but not as a single phase. The pyrolysis residues are composed of a silicon substituted bulk mesophase in which mesophase spherolites without silicon are homogeneously d