【摘要】 将AlCl3(10%)催化萘在200℃恒温5 h制得萘的齐聚物,齐聚物主要为萘的三聚体,并含有四聚体和五聚体;然后通过加入不同比例的供氢剂十氢萘在340℃下恒温5 h热缩聚制得中间相沥青。结果表明:当十氢萘加入量为10%时,所得的沥青中间相含量高(100%),残炭率高(64.1%),软化点较低(190℃),可溶性较强(甲苯可溶组分含量为60.4%,吡啶可溶组分含量为80.2%)。更多还原

【Abstract】 Mesophase pitch with low softening point has good liquidity at high temperature and is often used in impregnant for carbon-carbon composite. In this paper mesophase pitch was prepared from the fine naphthalene using AlCl3as the catalyst. Firstly, the oligomers were prepared from fine naphthalene at the temperature of 200 ℃ for five hours. The oligomers are mainly composed of trimer, and a small amount of tetramer and pentamer of naphthalene. Then, the mesophase pitch was obtained by adding different amount of decahydronaphthalene at the temperature of 340 ℃ for five hours. The results show that the excellent mesophase pitch with 100% anisotropic content was obtained when the addition of the decahydronaphthalene is 10%. The mesophase pitch exhibits the fixing carbon content of 64.1%, soften point of 190 ℃, TS content of 60.4% and PS content of 80.2%.更多还原