混合型聚氨酯/有机蒙脱土纳米复合材料的制备与表征  

Preparation and Characterization of Hybrid Polyurethane / Organic Montmorillonite Nanocomposites

作　　者：何栋[1] 秦齐[1] 周宏伟[1] 李建华[1] 郑化[1] 易英[1] 

机构地区：[1]武汉理工大学化学工程学院,湖北武汉430070

出　　处：《高分子材料科学与工程》2015年第5期139-143,共5页Polymer Materials Science & Engineering

基　　金：湖北省自然科学基金面上项目(2014CFB832)

摘　　要：利用原位插层法制备出了混合型聚氨酯插层有机蒙脱土纳米复合材料(HPU/OMMT);研究了聚己二酸-1,4-丁二醇酯二醇插层有机蒙脱土(PBA/OMMT)用量对纳米复合材料平均粒径、黏度、Zeta电位、玻璃化转变温度(Tg)、力学性能和热稳定性等性能的影响。结果表明,增加PBA/OMMT的用量,乳液的平均粒径逐渐增大,黏度变化不大,Zeta电位依次降低;同时,纳米复合材料的Tg从-58.87℃上升至-57.51℃,拉伸强度和断裂伸长率均先上升后降低。当OMMT的质量分数为5%时,HPU/OMMT膜的初始降解温度和中心降解温度分别为319.6℃和416.2℃,表现出较好的热稳定性。Hybrid polyurethane / organic montmorillonite nanocomposites( HPU / OMMT) were synthesized via intercalating polymerization process. The influence of the poly-1,4-butylene adipate glycol / organic montmorillonite( PBA /OMMT) content on average particle size,zeta potential,viscosity,glass transition temperature( Tg),mechanical properties and thermal stability of the nanocomposites were studied. The results show that with increasing of the PBA / OMMT content,the average particle size of emulsion increases gradually,the viscosity changes a little and the zeta potential decreases. Meanwhile,the Tgof nanocomposites is increased from- 58. 87 ℃ to- 57. 51 ℃,both the tensile strength and elongation are increased first and then decreased. When the mass fraction of OMMT is 5%,the initial degradation temperature and center degradation temperature of the HPU / OMMT films are 319. 6 ℃ and 416. 2 ℃ respectively,which exhibit good thermal stability.

关 键 词：混合型聚氨酯 有机蒙脱土 插层 纳米复合材料 

分 类 号：TQ317[化学工程—高聚物工业] TB332[一般工业技术—材料科学与工程]