以甲苯二异氰酸酯(TDI)、聚酯二元醇(PBA)、聚醚二元醇(N220)、二羟甲基丙酸(DMPA)、三羟甲基丙烷(TMP)等为主要原料合成了一系列水性聚氨酯乳液(WPU).探讨了聚醚与聚酯的含量、交联度等因素对水性聚氨酯乳液外观、粒径以及膜的红外结构、耐热性能和力学等性能的影响.结果表明:聚酯含量的增加有利于提高水性聚氨酯的结晶和耐水性、耐热性能,交联度的增加破坏了水性聚氨酯分子链的规整性,使得其结晶能力下降,耐热性能变化不明显,但是耐水性得到提高.
参考文献
| [1] | Wen TC.;Yang CH.;Luo SS. .Ionic conductivity of polymer electrolytes derived from various diisocyanate-based waterborne polyurethanes[J].Polymer: The International Journal for the Science and Technology of Polymers,2000(18):6755-6764. |
| [2] | Zhang, YH;Xia, ZB;Huang, H;Chen, HQ .A degradation study of waterborne polyurethane based on TDI[J].Polymer Testing,2009(3):264-269. |
| [3] | Coutinho FMB.;Delpech MC.;Alves TL.;Ferreira AA. .Degradation profiles of cast films of polyurethane and poly(urethane-urea) aqueous dispersions based on hydroxy-terminated polybutadiene and different diisocyanates[J].Polymer Degradation and Stability,2003(1):19-27. |
| [4] | Rahman, MM;Lee, WK .Properties of Isocyanate-Reactive Waterborne Polyurethane Adhesives: Effect of Cure Reaction with Various Polyol and Chain Extender Content[J].Journal of Applied Polymer Science,2009(6):3767-3773. |
| [5] | Anila Asif;Lihua Hu;Wenfang Shi .Synthesis, rheological, and thermal properties of waterborne hyperbranched polyurethane acrylate dispersions for UV curable coatings[J].Colloid and polymer science,2009(9):1041-1049. |
| [6] | Cakic, SM;Stamenkovic, JV;Djordjevic, DM;Ristic, IS .Synthesis and degradation profile of cast films of PPG-DMPA-IPDI aqueous polyurethane dispersions based on selective catalysts[J].Polymer Degradation and Stability,2009(11):2015-2022. |
| [7] | Lee MH;Choi HY;Jeong KY;Lee JW;Hwang TW;Kim BK .High performance UV cured polyurethane dispersion[J].Polymer Degradation and Stability,2007(9):1677-1681. |
| [8] | Yeh JM;Yao CT;Hsieh CF;Yang HC;Wu CP .Preparation and properties of amino-terminated anionic waterborne-polyurethane-silica hybrid materials through a sol-gel process in the absence of an external catalyst[J].European Polymer Journal,2008(9):2777-2783. |
| [9] | Yongshang Lu;Richard C. Larock .Soybean-Oil-Based Waterborne Polyurethane Dispersions: Effects of Polyol Functionality and Hard Segment Content on Properties[J].Biomacromolecules,2008(11):3332-3340. |
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