辽宁石油化工大学学报2025，Vol.45Issue(6)：1-10,10.DOI:10.12422/j.issn.1672-6952.2025.06.001
重质油共混改性催化聚合制备包覆沥青的研究
Preparation of Coated Asphalt by Catalytic Polymerization by Modified Heavy Oil Blends
摘要
Abstract
RVR and FCCS were employed as raw materials,modified with ET,high-quality coated asphalt products were obtained through optimization of the preparation process.The raw materials and products were characterized using FT-IR,XRD and TG/DTG.Combined with the information from ¹H-NMR,elemental analysis,and molecular weight determination,the reaction mechanism was proposed.The results show that the difficulty of blending and modifying the raw materials is significantly related to the content of asphaltenes and aromatics,higher proportions of asphaltenes and aromatics facilitate the modification process.From the perspective of the reaction mechanism,the+CH₂CH+2 generated by the dehydration of ethylene glycol under acidic conditions plays a bridging role,enabling RVR,FCCS,and ET to form coated asphalts E-FCCS and E-RVR with condensed aromatic structures through polycondensation reactions.A higher content of aliphatic chain alkyl structures in the modified feedstock oil leads to stronger reaction activity.During the catalytic cross-linking polymerization process,these structures are prone to cleavage to form small molecules.These small molecules hinder the polycondensation reaction between polycyclic aromatic hydrocarbons,inhibit the increase in aromaticity of the system,and thereby interfere with the growth of graphite crystal structures,which is unfavorable for the formation of ideal graphite crystals with condensed aromatic hydrocarbons as basic units.The characterization and analysis results of the coated asphalts E-FCCS and E-RVR support this conclusion.By clarifying the intrinsic relationships between raw material structure,reaction mechanism,and product properties,this study provides theoretical and technical foundations for the preparation of coated asphalt via blending modification and catalytic polymerization of heavy oil.关键词
减黏渣油/催化裂化油浆/乙烯焦油/共混改性/包覆沥青Key words
Viscosity reducing residue oil/Catalytic cracking slurry oil/Ethylene tar/Blending modification/Coated asphalt分类
化学化工引用本文复制引用
杨春辉,李静,石薇薇,乔海燕,韩冬云,佟天宇..重质油共混改性催化聚合制备包覆沥青的研究[J].辽宁石油化工大学学报,2025,45(6):1-10,10.基金项目
辽宁省教育厅基本科研项目(LJ212410148006). （LJ212410148006）
