关键词: 溶度参数, 黏均分子量, 减阻剂, 溶液聚合

Abstract: In this paper，the compatibility between solvent and polymer is predicted according to solubility parameter theory，and a theoretical guidance is provided for the synthesis of drag reduction agent (DRA) with high molecular weight. The experiment results show the viscosity-average molecular weight size order of DRA synthesized by aliphatic hydrocarbon solvents (n-hexane、n-octane and cyclohexane) and aromatic hydrocarbon solvents (cyclohexane、benzene and chlorobenzene) are in accordance with the molecular weight size order of DRA which was synthesized by different solvents predicted according to solubility parameter theory. Aliphatic hydrocarbon solvents are good solvents for α-olefin polymerization，and aromatic hydrocarbon solvents are poor solvents for α-olefin polymerization. Cyclohexane in good solvents is the best solvent for α-olefin polymerization，and is easy to synthesize DRA with large molecular weight. At the same time，the product structure and properties are characterized by simulative loop evaluation apparatus、XRD and 1H-NMR.

Key words: solubility parameter, viscosity-average molecular weight, drag reduction agent, solution polymerization