文献类型：期刊文献

中文题名：有机硅改性水性聚氨酯涂层的制备及其防污性能

英文题名：Preparation and Antifouling Properties of Silicon-Modified Waterborne Polyurethane Coatings

作者：李敏[1];韩龙[1];郭旭虹[1];王杰[1]

机构：[1]华东理工大学化工学院,大型工业反应器工程教育部工程研究中心,化学工程联合国家重点实验室,上海200237

年份：2021

卷号：34

期号：4

起止页码：379

中文期刊名：功能高分子学报

外文期刊名：Journal of Functional Polymers

收录：CSTPCD;;北大核心:【北大核心2020】；CSCD:【CSCD2021_2022】；

基金：国家自然科学基金(51403062)。

语种：中文

中文关键词：羟基硅油;水性聚氨酯;防污涂层;面板测试

外文关键词：polydimethylsiloxane;waterborne polyurethane;antifouling coating;panel test

摘要：以甲苯二异氰酸酯(TDI)、聚己二酸-1,4-丁二醇酯(PCL2000)和羟基硅油(PDMS)为主要原料,合成了一系列有机硅改性的水性聚氨酯(PU)涂层。采用红外光谱、粒径分析、差示扫描量热、热重分析、接触角分析、偏光显微分析等表征了材料的结构与性能。将涂覆了改性PU涂层的面板浸泡在河水中,对比了不同质量分数PDMS的PU涂层的实际防污效果。结果表明:随着w(PDMS)的增加,涂层的热稳定性增加,表面自由能逐渐降低至13.87 mJ/m^(2);PDMS的引入降低了PU涂层的弹性模量和玻璃化转变温度并增强了涂层的疏水性。河水挂板测试表明:PDMS改性的PU涂层具有良好的防污性能;经过计算验证了PDMS改性PU涂层的防污性能可以由涂层的弹性模量与表面自由能乘积的平方根来预测。
Silicone can be used to improve the antifouling properties of polyurethane(PU)coatings.A series of uniform and stable nano-scale waterborne PU were prepared by using toluene diisocyanate(TDI),polycaprolactone diol(PCL2000)and hydroxy-terminated polydimethylsiloxane(PDMS)as the main raw materials.Fourier transform infrared spectrometer(FT-IR),dynamic light scattering(DLS),differential scanning calorimetry(DSC),thermogravimetric analysis(TGA),polarizing microscope(PM)were used to test the structures and properties of the material.Subsequently,the coatings with different PDMS mass fractions(w(PDMS)were painted on the panels and immersed in the river.The practical antifouling levels of the materials were tested.Results showed that the thermal stability of the film increased with the increase of w(PDMS).While the surface free energy(γ),gradually decreased to 13.87 mJ/m^(2).PDMS reduced the glass transition temperature(Tg)of the material,and enhanced the water resistance of the coatings.Besides,the addition of silicon oil effectively reduced the elastic modulus(E)of the coatings.Correlation(between the theory that the adhesion of pollutants on antifouling coating is positively relevant to the square root of the product of the elastic modulus of the coating and the surface energy and the actual antifouling level(coatings actually immersed in water)was explored.Results showed that the PDMS-modified PU had excellent antifouling performance,and the actual antifouling effect of the coating was consistent with the calculation results of the theoretical reference value √γ·E.