油浆调合沥青SBS改性研究

摘要

催化裂化油浆富含芳香分,是理想的道路沥青调合组分.以SBS为改性剂、油浆和渣油调合沥青作为基质沥青制备SBS改性沥青,利用FCC油浆蒸馏所得馏分油作为相容剂对SBS进行预溶胀,同时利用蒸馏所得的残油调节改性沥青的针入度,并对油浆调合SBS改性沥青的性能进行评价.结果表明:催化裂化油浆蒸馏馏分油对SBS具有较好的溶胀能力,经过溶胀后SBS的分散性能显著改善,直接利用机械搅拌即可获得分散均匀、储存稳定的SBS改性沥青；当SBS用量(w)为4.5％时,油浆与渣油的调合沥青通过机械搅拌工艺可制备出符合JTGF40-2004标准的SBS改性沥青.%Fluid catalytic cracking (FCC) slurry oil having high content of aromatics is a good blending component for pavement asphalt. SBS modified asphalt was prepared with SBS and FCC slurry oil blended asphalt in this study,using distillates from the distillation of FCC slurry oil as compatibilizer to pre-swell SBS and the residue of distillation was used to adjust the penetration of modified asphalt. The properties of these obtained SBS modified asphalt samples were determined. Test results show that the distillates from FCC slurry oil is a good swelling agent for SBS, the dispersion property of swelled SBS improves significantly,thus just by simple mechanical stirring,a well dispersed and stable SBS modified asphalt product can be obtained. With a SBS mass content of 4. 5%, using slurry oil and vacuum residue as blending components, SBS modified asphalt meeting the standard of JTG F40-2004 can be prepared by using mechanical stirring.