工艺参数对聚苯醚包覆环氧树脂微胶囊结构与性能影响  

Effects of Process Parameters on Structure and Properties of Polyphenylene EtherMicrocapsules Filled with Epoxy Resin

作　　者：刘姝辰 胡义 李楠 袁莉[1] 顾嫒娟[1] 梁国正[1] Liu Shuchen;Hu Yi;Li Nan;Yuan Li;Gu Aijuan;Liang Guozheng(College of Chemistry,Chemical Engineering and Materials Science,Soochow University,Suzhou 215123,China)

机构地区：[1]苏州大学材料与化学化工学部,江苏苏州215123

出　　处：《工程塑料应用》2020年第9期49-55,共7页Engineering Plastics Application

基　　金：国家自然科学基金面上项目(51973145);江苏省高校优势学科建设工程项目(PAPD);苏州大学大学生创新创业训练项目(2013xj021)。

摘　　要：为了研究溶剂挥发法制备高热稳定性、低分子量聚苯醚(PPE)包覆环氧树脂(EP)微胶囊(MCs)过程中工艺参数对MCs结构与性能的影响,通过改变工艺参数PPE/EP质量比、表面活性剂十二烷基硫酸钠(SDS)浓度以及搅拌速率制备了MCs。结果表明,采用溶剂挥发法制备的MCs的平均粒径范围为9.8~32μm。PPE/EP质量比、SDS浓度及搅拌速率可明显影响MCs的结构与性能。增加PPE/EP的质量比、SDS浓度和搅拌速率有利于小粒径及低孔隙结构MCs的形成,形成的小粒径MCs具有相对高的化学反应活性及低的初始热分解温度,但其具有相对高的最大热分解温度。当PPE与EP质量比为1∶1,SDS浓度为0.25%及搅拌速率为700 r/min时,所制备的MCs的结构与热稳定性相对较好。To investigate the influences of process parameters on the structure and properties of high thermal stability and low molecular weight polyphenylene ether(PPE)microcapsules(MCs)filled with epoxy resin(EP)prepared by the solvent evaporation method,MCs were prepared by varying process parameters including the mass ratios of PPE/EP,surfactant sodium dodecyl sulphate(SDS)concentration and agitation rate.Results indicate that the average particle size of MCs prepared by the solvent evaporation method is 9.8–32μm.The structure and properties of MCs depend strongly on the mass ratio of PPE/EP,the concentration of SDS and the agitation rate.Increasing the mass ratio of PPE/EP,SDS concentration and agitation rate facilitate the formation of smaller MCs with low pore structure.The smaller MCs have relatively high chemical reaction activity and low initial thermal decomposition temperature,but they show higher maximum thermal decomposition temperature.MCs with better structure and thermal stability can be obtained when the mass ratio of PPE/EP is 1∶1,SDS concentration is 0.25%and agitation rate is 700 r/min.

关 键 词：微胶囊 聚苯醚 环氧树脂 形貌 热性能 

分 类 号：TB381[一般工业技术—材料科学与工程]