摘要
本文详细考察了单家寺、胜利和任丘道路沥青及其组分——饱和烃组分,芳香烃组分、胶质和沥青质在50℃,约1mm样品膜厚,O.133MPa(O_2),无光照条件下吸氧125h后物理和化学性质的变化.研究结果表明,各种样品在吸氧反应过程中所吸收的氧主要转变成羟基、羰基和硫氧键.吸氧后沥青的胶体稳定性变差,各种样品的分子量均向大分子方向扩展.动力学研究表明,各组分间变化中,以胶质转变成沥青质的速度最大.
The changes of the physico-chemical properties of Shanjiasi,Shengli and Renqiu paving asphalts and their constituents-saturates,aromatics,resins and asphaltenes were investigated after they had been absorbing oxygen for 125 hours at 50℃,1mm sample film thickness and 0.133MPa(O_2)in darkness.The experimental results showed that the oxygen absorbed by the samples was mainly changed into O-H,C=O and S=O groups;the colloidal stability of the asphalts deteriorated after absorbing oxygen and the molecular weight GPC peak spread toward higher MW.The results of kinetics study demonstrated that the rate of conversion of resins into asphaltenes is greater than those of other constituents.
出处
《石油炼制》
CSCD
1990年第6期48-54,共7页
