高芯材含量聚苯乙烯石蜡微胶囊的制备及性能研究  

Preparation and properties of polystyrene paraffin microcapsules with high core content

作　　者：牟鹏林 李凤艳[1] 赵天波 MOU Penglin;LI Fengyan;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：《化学研究》2020年第1期67-73,共7页Chemical Research

基　　金：国家自然科学基金(11472048).

摘　　要：为解决石蜡在使用过程中的一系列问题,以聚苯乙烯为壁材,58#石蜡为芯材,采用悬浮聚合法制备了高芯材含量的微胶囊.考察了二己烯基苯(DVB)用量、芯壁比、复合改性时共聚单体种类和用量对微胶囊的影响.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.实验结果表明,DVB用量11%、芯壁比3∶1制备的微胶囊大小均匀,无团聚现象;交联改性的同时,加入20%MA单体共聚改性制备的微胶囊形貌好,热稳定性最佳,微胶囊中石蜡含量为91.7%时储热性能最优.In order to solve a series of problems in the use of paraffin,microcapsules with high core material content were prepared by suspension polymerization with polystyrene as wall material and 58#paraffin as core material.The effects of DVB dosage,core wall ratio,comonomer type and dosage on the microcapsules were investigated.The structure,morphology,thermal storage and thermal stability of the microcapsules were characterized by FT-IR,SEM,DSC and TG.The results show that the microcapsules prepared by DVB dosage of 11%and core wall ratio of 3∶1 have uniform size and no agglomeration;At the same time of cross-linking modification,the microcapsule prepared by adding 20%MA monomer copolymerization has the best morphology and thermal stability,and the thermal storage performance is the best when the paraffin content in the microcapsule is 91.7%.

关 键 词：聚苯乙烯 悬浮聚合 微胶囊 交联 共聚 

分 类 号：TB34[一般工业技术—材料科学与工程]