Preparation of Poly-α-Olefin Microcapsule Particles Coated with Polyurethane as a Drag Reducer Based on Interface Polymerization  

作　　者：Li Chenhao Lu Yong Li Hao Chen Yue Meng Yeqiao Zhou Pengfei Xu Dan Wang Yiran Zhang Xiaolai 

机构地区：[1]Shandong University,Jinan 250100,China [2]PipeChina Eastern China Crude Oil Storage and Transportation Co.,Ltd,Science and Technology R&D Center,Xuzhou 221000,China [3]Shandong Dongyue Polymer Material Co.,Ltd.,Zibo 256401,China [4]State Key Lab of Fluorinated Functional Membrane Materials,Zibo 256401,China

出　　处：《China Petroleum Processing & Petrochemical Technology》2023年第2期101-112,共12页中国炼油与石油化工（英文版）

基　　金：This paper is supported by the Shandong Provincial Key Research and Development Program(Project No.2020CXGC010403);the Key Projects of New and Old Kinetic Energy Conversion(No.[2020]1220);the scientific research project of SINOPEC Corporation(CLY19005).

摘　　要：The molecular behavior of polyurethane(PU)coating materials during the surface adsorption of poly-α-olefin as a drag reducing polymer was explored by a molecular dynamics simulation.Three different PU capsule wall materials were synthesized using two reaction monomers,and a poly-α-olefin/PU drag reducer microcapsule was prepared based on interface polymerization.The structure,morphology,thermal stability,compressive strength,and drag reduction performance of the microcapsules were characterized and compared.The results showed that a non-bonding interaction induced the adsorption of the PU coating material,poly-α-olefin and PU then fused at the interface,and the PU coating material was embedded into the inner grooves of poly-α-olefin in the form of a local mosaic,thereby forming a stable core–shell structure.The morphological characterization indicated that PU and poly-α-olefin could form microcapsule structures.The thermal decomposition temperature of the microcapsule was dependent on the type of capsule wall material.The microcapsule structure had a slight effect on poly-α-olefin drag reduction.The system enabled poly-α-olefin to exist in powdered particles through microcapsulation,and had a good dispersion effect that facilitated storage and transport processes.The method effectively inhibited the accumulation and bonding of poly-α-olefin at room temperature.

关 键 词：drag reducer poly-α-olefin POLYURETHANE microcapsules particles interfacial polymerization 

分 类 号：TE39[石油与天然气工程—油气田开发工程] TQ316.3[化学工程—高聚物工业]