以甲苯二异氰酸酯(TDI)、聚醚多元醇(PTMG)为主要原料,二羟甲基丙酸(DMPA)为亲水单体,采用三羟甲基丙烷脱水蓖麻油酸酯(TMPDCO)进行改性,通过逐步聚合反应制备了一系列室温固化水性聚氨酯树脂.研究了TMPDCO的含量、亲水基团含量、软段多元醇种类与相对分子质量、封端剂以及氮丙啶交联剂等对聚氨酯涂膜耐水性的影响,从而确定了最佳合成配方,获得了优良耐水性能的水性聚氨酯树脂.
Series of ambient curable waterborne polyurethane dispersions have been prepared by step polymerization of toluene diisocyanate (TDI) with polytetrahydrofuran glycol((PTMG ), and trimethylolpropane dehydrated castor oleate (TMPDCO) as modification agent,dimethylolpropionic acid(DMPA)as hydrophilic monomer. The influence of content of TMPDCO and hydrophilic monomer,kind and molecular weight of soft segments and blocking agent and aziridine on water resistance property of waterborne polyurethane coatings. The optimum formulation was finalized to give a waterborne polyurethane resin with excellent water resistance property.
参考文献
| [1] | 赵建设,刘治猛,贾德民,刘煜平,蒋欣.水性聚氨酯乳液稳定性与涂膜耐水性协调研究[C].第五届环保型水性树脂涂料技术研讨会论文集,2007:61-65. |
| [2] | 周海峰,熊潜生,许戈文,王彤.水性聚氨酯的改性研究[C].ChinaPU 2007第二届水性聚氨酯技术与应用研讨会,2007:105-107. |
| [3] | 杜娟;郝俊松;李再峰.三羟甲基丙烷脱水蓖麻油酸酯改性水基聚氨酯树脂的制备与性能[J].聚氨酯工业,2009(03):48. |
| [4] | BAI CHENYAN;ZHANG XINGYUAN;DAI JIABING.Water resistance of the membranes for UV curable waterborne polyurethane dispersions[J].Progress in Organic Coatings,2007(59):333-334. |
| [5] | 崔锦峰,杨保平,周应萍,张应鹏,张建强.常温交联型水性聚氨酯的合成及其在水性丝网印染涂料中的应用[J].印染助剂,2005(06):18-20. |
| [6] | 崔锦峰,杨保平,周应萍,李贵贤.用于丝网印染的纳米水性涂料的研制[J].印染助剂,2004(04):24-26. |
| [7] | 崔锦峰,周应萍.论水性油墨印刷适性的调配[J].中国印刷,2003(08):111-114. |
| [8] | MARCIA C DELPECH;FERNANDA;M B COUTINHO.Waterborne anionic polyurethanes and polyols:influence of the chain extender on mechanical and adhesive properties[J].Polymer Testing,2000(19):939-941. |
| [9] | 周公度;段连运.结构化学基础[M].北京:北京大学出版社,2003 |
| [10] | 鲍俊杰,钟达飞,谢伟,许戈文.水性聚氨酯结构与性能关系研究[J].化学推进剂与高分子材料,2006(04):34-37. |
| [11] | 白晨艳;戴家兵;张兴元.水性聚氨酯的改性研究[A].安徽黄山,2007:143-144. |
| [12] | 秦瑞,杨保平,孙哲,李博文.双组分水性聚氨酯涂料的研究[J].现代涂料与涂装,2008(11):8-10,14. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%