以三异丙醇胺(TIPA)为交联剂制备了不同交联度的阳离子型水性聚氨酯(CWPU).用红外表征其结构,并分别对CWPU乳液的粒径分布和胶膜的机械性能、热学性能以及耐水性进行了测试.结果表明:随着TIPA含量的增加,CWPU乳液的平均粒径先减小后增大,胶膜硬度增加,拉伸强度增大,软段玻璃化转变温度提高,耐水性和耐热性提升.当TIPA加入量为1.80％时,胶膜机械性能最优,拉伸强度达17.5 MPa,硬度达邵D65,耐热性也最好;当TIPA加入含量为1.35％时,胶膜耐水性最好,96h吸水率为4.2％,并且乳液粒径较小,较适合作木器封底漆.
参考文献
| [1] | Li, B.;Peng, D.;Zhao, N.;Mu, Q.;Li, J..The physical properties of nonionic waterborne polyurethane with a polyether as side chain[J].Journal of Applied Polymer Science,20133(3):1848-1852. |
| [2] | Suzana M. Cakic;Ivan S. Ristic;Milena Marinovic-Cincovic.The effects of the structure and molecular weight of the macrodiol on the properties polyurethane anionic adhesives[J].International Journal of Adhesion & Adhesives,2013:132-139. |
| [3] | 殷先泽;秦寒;方舟;周应山.阳离子型水性聚氨酯耐热性及力学性能研究[J].聚氨酯工业,2014(5):18-21. |
| [4] | 李海涛;廖兵;李朋娟;戴永强;庞浩.环氧树脂蓖麻油双重改性水性聚氨酯皮革涂饰剂的合成与性能[J].精细化工,2015(5):565-570. |
| [5] | 张威;王焕;许戈文.改性阳离子水性聚氨酯研究进展[J].涂料技术与文摘,2011(12):18-20,50. |
| [6] | 陈佳;沈一丁;费贵强;王海花.环氧改性阳离子水性聚氨酯的制备及对纸张的表面处理[J].功能材料,2012(24):3420-3424. |
| [7] | 陈建福;张卫英;李晓;苏火煌.聚酯型阴离子水性聚氨酯乳液的合成及性能研究[J].中国涂料,2011(6):30-34. |
| [8] | 王芳;田伟;汤克勇;王全杰.三羟甲基丙烷对聚氨酯涂饰剂性能的影响[J].中国皮革,2007(3):19-21. |
| [9] | Li, P.;Shen, Y.;Yang, X.;Li, G..Preparation and properties of waterborne cationic fluorinated polyurethane[J].Journal of Polymer Research,20121(1):9786-1-9786-10. |
| [10] | Park, Young Gwang;Lee, Young Hee;Rahman, Mohammad Mizanur;Park, Cha Cheol;Kim, Han Do.Preparation and properties of waterborne polyurethane/self-cross-linkable fluorinated acrylic copolymer hybrid emulsions using a solvent/emulsifier-free method[J].Colloid and polymer science,20155(5):1369-1382. |
| [11] | 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,20099(9):1041-1049. |
| [12] | Lai Xiaojuan;Li Xiaorui;Wang Lei.Synthesis and characterizations of waterborne polyurethane modified with 3-aminopropyltriethoxysilane[J].Polymer bulletin,20101(1):45-57. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%