不饱和聚酯树脂微乳液的研究 (Ⅱ)不饱和聚酯树脂微乳液聚合  

Study on microemusion for unsaturted polyestesr resin (Ⅱ)Microemulsion polymerization of unsaturated polyester resin

作　　者：张伟民[1] 董炳祥[2] 刘正平[2] 陈文琇[2] 

机构地区：[1]北京仁创制造技术研究院,北京101500 [2]北京师范大学化学系,北京100875

出　　处：《弹性体》2007年第5期17-19,23,共4页China Elastomerics

基　　金：超分子结构与谱学教育部重点实验室资助(99-06)

摘　　要：磺酸盐不饱和聚酯和丙烯酸乙酯形成的微乳液用过硫酸钾或辐射引发共聚合,用膨胀计法测定聚合速率随转化率的变化,发现用过硫酸钾热引发存在聚合恒速期,恒速期随引发剂含量的减小或聚酯/丙烯酸乙酯质量比增大而变长。60Co-γ辐射引发几乎无恒速期。动态光散射法测定微乳液粒径的大小,发现聚合后的流体力学直径比聚合前都大,过硫酸钾引发胶乳流体力学直径比辐射引发胶乳流体力学直径大,同时对聚合机理进行了讨论。The oil-in-water（O/W） mieroemulsion for sulfosalt unsaturated polyester and ethylaerylate was polymerized in dilatometer and using pollassium persulfate as, initiator or using irradiation initiation, The curve of copolymerization rates against conversion ratios was recorded,and the plateauof curve in microemulsion copolymerization of sulfosalt unsaturated polyester resin was firstly observed, The length of the plateau was shortened with the increase of KPS concentration or with the decrease of UP/EA weight ratio. Hydrodynamic diameter of microemulsion droplets and intramolecularly crosslinked macromolecules were measured by means of quasielastic light scattering. The polymerization kinetics and the polymerization mechanisms were also discussed.

关 键 词：磺酸盐不饱和聚酯 微乳液聚合 过硫酸钾 辐射引发 恒速期 

分 类 号：TQ323.42[化学工程—合成树脂塑料工业]