摘要
详细考察了单家寺和胜利直馏道路沥青(100号)及其组分在吸氧老化中化学族组成和平均结构参数的变化。结果表明,沥青的各组分变重,平均分子量增大;各种试样平均分子的总碳数、总环数、缩合指数和芳香度增加;胶质和沥青质组分变化最明显,是沥青中不稳定的组分。两种沥青相比,吸氧量较多的胜利沥青及其组分的变化明显高于单家寺沥青及其相应组分。
The changes of chemical group compositions and average structural parameters of Shanjasi and Shengli straight run paving asphalts (No.100) and their constituents with the absorption of oxygen has been studied. The experimental results show that each constituent of asphalts changes into the near heavier one; the average molecule weight, total number of carbon atoms, total number of rings, concen- tration index and aromaticity of average molecules of the samples are increased after absorbing oxy- gen. Resins and asphaltenes are the most unstable constituents in asphalts as shown by their evident changes after absorbing oxygen. The reaction of oxygen absorption of asphalts is indeed a condensation reaction. The changes of Shengli asphalt and its constituents absorb more oxygen than Shanjasi asphalt and its constituents.
出处
《石油炼制》
CSCD
1992年第7期54-59,共6页
