悬浮聚合制备交联聚苯乙烯石蜡微胶囊及性能研究  

Preparation of Crosslinked Polystyrene Paraffin Microcapsules by Suspension Polymerization and Properties Research

作　　者：李凤艳[1] 牟鹏林 赵天波 Li Fengyan;Mou Penglin;Zhao Tianbo(School of Chemical Engineering,Beijing Institute of Petrochemical Technology,Beijing 102617,China;School of Chemistry and Chemical Engineering,Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]北京石油化工学院化学工程学院,北京102617 [2]北京理工大学化学与化工学院,北京100081

出　　处：《石油化工高等学校学报》2020年第3期8-13,共6页Journal of Petrochemical Universities

基　　金：国家自然科学基金项目(11472048)。

摘　　要：以聚苯乙烯为壁材,58#石蜡为芯材,加入交联剂采用悬浮聚合法制备了交联型微胶囊。考察了聚合温度、引发剂质量分数、交联剂种类及芯壁比对微胶囊的影响。采用FT‐IR、SEM、DSC、TG表征了微胶囊的结构、形貌、储热性能及热稳定性能。结果表明,聚合温度80℃,引发剂AIBN质量分数2%时制备的微胶囊球形貌好;采用交联剂DVB制备的微胶囊碎屑少,无团聚现象,热稳定性好;以芯壁比3∶1制备的微胶囊相变焓为152.2 J/g,芯材质量分数为82.2%,储热性能最好。Cross-linked microcapsules were prepared by suspension polymerization with polystyrene as the wall material and 58#paraffin as the core material.The effects of polymerization temperature,initiator dosage,crosslinker type and core-wall ratio on microcapsules were investigated.The structure,morphology,heat storage performance and thermal stability of microcapsules were characterized by FT-IR,SEM,DSC and TG.The experimental results show that the microcapsules prepared by the polymerization temperature of 80℃and the initiator AIBN 2%have good spherical shape.The microcapsules prepared by the cross-linking agent DVB have less clastic debris,no agglomeration and good thermal stability.The microcapsules prepared by the core wall ratio of 3∶1 have a phase transition enthalpy of 152.2 J/g,a core material content of 82.2%,and the best heat storage performance.

关 键 词：聚苯乙烯 石蜡 悬浮聚合 交联 热性能 

分 类 号：O623.11[理学—有机化学] TB34[理学—化学]