以聚碳酸亚丙酯多元醇(PPC)为软段,以二羟基丙酸(DMPA)为亲水扩链剂,合成水性聚氨酯(WPU)预聚体,通过氨基硅油(AEAPS)接枝改性制备了系列WPU乳液.采用红外光谱(FT-IR)、原子力显微镜(AFM)、X射线衍射(XRD)、热重分析(TGA)、接触角和耐水试验对WPU结构和性能进行表征.结果表明,纯PPC型WPU胶膜软硬段微相分离不明显,AEAPS改性胶膜软硬段微相分离明显,胶膜的结晶性随着AEAPS含量的增大而降低,胶膜耐热稳定性、耐水性和水接触角随着AEAPS含量的增大而提高.
参考文献
| [1] | Wang, HH;Shen, YD;Fei, GQ;Li, XR;Liang, Y .Micromorphology and phase behavior of cationic polyurethane segmented copolymer modified with hydroxysilane[J].Journal of Colloid and Interface Science,2008(1/2):36-41. |
| [2] | 宗建平,张庆思,李俊英,孙海峰,于一涛,王世杰,刘蕴慧.聚硅氧烷接枝与嵌段改性对水性聚氨酯性能的影响[J].高分子材料科学与工程,2011(05):62-66. |
| [3] | Victor Bulacovschi;Vladimir Condratov .Thermal stability and the tensile properties of some segmented poly(ester-siloxane)urethanes[J].Polymer Degradation and Stability,1999(2):259-265. |
| [4] | 刘保华,张敏,余爱芳,陈立班.聚碳酸亚丙酯多元醇的降解机理[J].高分子材料科学与工程,2004(03):76-79. |
| [5] | Reifer D.;Kumpf RJ.;Karbach A.;Fuchs H.;Windeit R. .AFM AND TEM INVESTIGATIONS OF POLYPROPYLENE/POLYURETHANE BLENDS[J].Thin Solid Films: An International Journal on the Science and Technology of Thin and Thick Films,1995(2):148-152. |
| [6] | Sundar S;Vijayalakshmi N;Gupta S;Rajaram R;Radhakrishnan G .Aqueous dispersions of polyurethane-polyvinyl pyridine cationomers and their application as binder in base coat for leather finishing[J].Progress in Organic Coatings: An International Review Journal,2006(2/3):178-184. |
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