第50卷第8期 2012年8月
上海涂料
SHANGHAI COATINGS
水性双组分聚氨酯涂料的
研制及性能研究
陈菲斐章奕（上海涂料有限公司技术中心，上海200062）
Vol. 50 No. 8 Aug.2012
摘要：探讨了含羟基聚丙烯酸酯分散体、多异氧酸酯固化剂、n-Nco/n-on配比、固化时间和干燥条件，以及催化剂用量对水性双组分聚氨酯涂膜性能的影响，同时对水性双组分聚氢酯涂料的活化期进行了研究。
关键调：水性双组分聚氢酯涂料；涂膜性能；影响因素；活化期
中图分类号：TQ630.7
0引言
文献标识码：A
聚氨酯涂料具有许多优异的性能，如附着力强，耐磨性好，弹性可调，优良的耐酸性、耐碱性、耐高低温性等，因此在国防、建筑、化工、车辆、木器、飞机等方面得到了广泛的应用。目前，我国聚氨酯涂料年产量接近80万t，主要为溶剂型双组分聚氨酯涂料。但随着对传统溶剂型涂料挥发性有机化合物[收稿日期】2012-06-11
文章编号：1009-1696(2012)08-0005-06
（VOC)以及有害空气污染物（HAP)排放的限制，开发高性能水性聚氨酯涂料势在必行。
水性聚氨酯涂料以水为主要分散介质，不燃，对环境友好。水性聚氨酯涂料分为单组分和双组分两种。其中单组分水性聚氨酯涂料施工方便，但其涂膜的耐化学介质性能无法与相应的溶剂型涂料媲美。水性双组分聚氨酯涂料由于涂膜交联密度高，具有优异的物理机械性能和耐化学介质性能，可代替同
PreparationofNano-SiO/FluorinatedPolyacrylateCompositeLatex Zhou Bin',Xu Fei?,Yang Jinsong?,Wang Jun3,Xu Haiyan
(1.SinochemTaicangChemical IndustryPark,JiangsuTaicang,215433,China;2.Universityof Scienceand Technologyof China,Anhui Hefei,230026,China:3.ShanghaiJiao Tong University,Shanghai,200240,China) Abstract: An organic nanoSiOs/acrylate dispersion was firstly prepared via solgel method by tetraethylorthosilicate(TEOS )as precursor and KH-55O as modifier. The obtained dispersion was then used to prepare fluorinated polyacrylate composite latex by using monomers containing fluorine groups. The structure of the latex was confirmed by Fourier transform infrared spectroscopy (FTIR )and dynamic light scattering(DLS ). Furthermore, the effects of fluorine monomers amount and nano-SiO2 amount on the properties of composite latex films were investigated, respectively. The water contact angle and water resistance of the film increased with the increase of fluorine-containing monomers. Moreover, the incorporation of nanoSiOz would lead to a further improvement of the wate resistance of the film.
Key Words: solgel method; miniemulsion polymerization; nanoSiOs/fluorinated polyacrylate composite latex