耐沾污型硅溶胶-丙烯酸酯乳液复合外墙涂料的研制

介绍了系列耐沾污水性建筑涂料中耐沾污型复合外墙涂料的研制状况,包括提高涂膜耐沾污性的技术原理、原材料和配制程序,增稠剂的使用对涂料贮存稳定性的影响,涂料PVC和耐沾污剂用量对耐沾污性的影响,耐沾污型硅溶胶-丙烯酸酯乳液复合外墙涂料配方以及技术经济性能分析等。     

高流平、耐沾污性内墙乳胶漆的研制

以聚乙烯醇为增稠流平剂及使用一种高分子蜡乳液制成的乳胶漆 ,改善了涂料的流平性和涂膜的憎水性。分析了蜡乳液用量对涂膜耐沾污性的影响和聚乙烯醇用量对涂料流平性的影响     

耐沾污涂料

200810148形成疏水涂膜的组合物、高耐久和耐污性的疏水涂膜、涂膜形成方法及其功能材料;200810149带有逐渐溶解涂膜的复合材料及由其制备的耐沾污涂料组合物;200810150可形成好的涂膜外观的贮存稳定性好的含氟表面活性剂耐沾污涂料组合物;200810151耐划伤性、耐沾污性和耐碱性好的防反射涂料组合物;     

水性涂料

具有优异的耐沾污性和重涂性的含蜡分散体的水稀释性涂料;用于形成组织致密、具有始干性和耐久性涂膜的水性涂料组合物;成型加工性优异的预涂铝板;透明导电涂料用单层碳钠米管分散的水稀释组合物;喷涂涂料用提高了耐剪切性的水性聚合物分散体     

水性氟碳外墙涂料的性能研究

优选水性氟碳树脂乳液作为外墙涂料的成膜物质,以碳酸钙粉填充增加涂膜硬度,最后搭配适量的分散剂、润湿剂、消泡剂等功能性助剂,研制出一种具有良好耐沾污性、且具备优异的耐候性和保光保色等耐老化性能的外墙涂料。研究了不同种类的水性氟碳乳液对水性氟碳外墙涂料性能的影响,并对不同种类水性氟碳乳液所制备的涂膜性能进行逐一考察。结果表明:虽然氟含量的大小不一定能影响到氟碳外墙乳胶漆的所有性能,但是高氟含量的氟碳涂料产品在耐沾污性和耐候性、保光保色性方面,明显比一般的乳胶漆涂料更优异。     

耐沾污罩面涂料用纯丙乳液的制备与研究

主要介绍了一种耐沾污罩面涂料用纯丙乳液的制备方法,分析了影响其耐沾污性能的因素。主要研究了玻璃化转变温度、亲疏水性以及涂膜致密度对耐沾污性能的影响。实验结果表明:随着玻璃化转变温度(T_g)的升高,亲水性的增强,涂膜致密度的提高,耐沾污性能会呈现整齐变好的趋势。     

自清洁涂料的研究思路与现状

介绍了提高涂膜耐沾污性的主要原理,提出从改善涂膜表面性质和提高涂膜致密性两方面来提高涂膜的耐沾污性的一些思路,并介绍了目前国内外制备耐沾污涂料的主要方法和相关的产品。     

多重交联UV固化水性聚氨酯木器涂料的研制

通过UV固化和有机硅交联改性及多官能度扩链剂的引入,研制了多重交联UV固化水性聚氨酯木器涂料。形成的涂膜在UV固化前即具有较好的涂膜强度和机械性能,耐沾污;经UV固化后,涂膜具有更加优异的耐水性、耐醇性、耐磨性和耐干热性,以及良好的硬度和装饰效果。     

耐沾污涂料

含硅氮烷的耐沾污固化涂膜及其制备方法；耐沾污性好的硬涂料组合物；具有耐沾污表面的板的制备方法；具有持久耐沾污性的涂料。由其制备的耐沾污板及其制备；耐沾污液态有机硅氧烷涂料组合物。[编者按]     

高耐候自清洁水性多彩涂料罩光清漆的研制

从高耐候、自清洁的设计理念入手,开发了一种具有高耐候自清洁功能的水性多彩涂料罩光清漆。重点阐述了高耐候自清洁水性多彩涂料罩光清漆用乳胶对涂膜耐候性能的影响、表面助剂对耐沾污的影响、增稠剂对涂膜耐水性的影响等,并对其作用机理进行了讨论。     

Dependence of dirt resistance of steel topcoats on their surface characteristics

Contamination of exterior coatings with dirt is a significant problem in seriously polluted environments. To correlate the dirt resistance of exterior coatings with surface characteristics (wettability, roughness, and composition), steel topcoats were evaluated using both dirt pick-up tests according to a national standard testing method of China (GB/T 9757-2001) and outdoor exposure experiments in Shanghai, China. These topcoats included polyvinylidene fluoride (PVDF) paints with various water contact angles (WCAs), polyurethane (PU) paint, polysiloxane (PSiO) paint, and 2K fluorocarbon (FPU) paint. Opposite dirt resistance results were obtained from these two dirt pick-up methods. In the outdoor exposure experiments, superhydrophilic PVDF paints showed excellent self-cleaning performance and thus superior dirt resistance. Superhydrophobic PVDF paint exhibited self-cleaning performance initially, but became dirty finally due to a piling up of PM_2.5 pollutants. PVDF paints with WCAs of 85°–125°, PU, PSiO, and FPU paints all exhibited poor dirt resistance in the outdoor environment. These results indicate that dirt resistance depends on surface wettability and the characteristics of pollutants rather than on the surface roughness and composition.     

叔丙外墙乳胶漆的研究

阐述了叔碳酸乙烯酯（VeoVa）-丙烯酸酯共聚乳液的合成,并探讨了影响叔丙乳胶漆的耐水性、耐沾污性、耐人工老化和户外天然曝晒等漆膜性能的主要因素。性能测试结果表明,叔丙外墙乳胶漆的性能优异。     

防潮防霉涂料的研制

通过选用核壳乳液和添加纳米填料,研制成一种防潮防霉涂料,改进了涂膜的耐水性、耐碱性、耐沾污性、耐霉菌性、耐湿热性、断裂伸长率等性能。讨论了各组分对涂料性能的影响。经过涂料配方优化,为研制综合性能高的防潮防霉涂料提供设计思路和理论依据。     

Nanocomposite acrylic paint with self-cleaning action

A nanodispersion of surface-functionalized fumed silica was incorporated into an acrylic paint formulation. SEM imaging indicated good dispersion of silica within the polymer matrix. This hybrid coating showed significantly lower dirt pick-up than the equivalent paint formulation without nanosilica additive, towards both organic and inorganic ashes. Washing with running water further decreases dirt retention. This self-cleaning performance remained unchanged after several dirt/washing cycles, during a 1-month period. Surface hardness measurements indicated no significant differences between the original and composite paint films. The lower dirt pick-up was attributed to nanoroughness created by the nanosilica particles present in the film.     

A study of acetoacetoxyethyl methacrylate hydrolysis in acrylic latex polymers as a function of pH

Acetoacetoxyethyl methacrylate (AAEM) is an ambient crosslinking monomer that, when incorporated into architectural coatings binders, provides coatings with improved hardness, scrub, stain, and dirt pick-up resistance. This study details the use of NMR spectroscopy to explore the hydrolysis profile of AAEM as a function of pH, type of neutralizer, and glass transition temperature of the binder. We have determined that AAEM has a hydrolysis profile that is independent of latex polymer pH relevant to coatings (pH 7–10). Lower T _g latex polymers enable the diffusion of ammonia into the binder nanoparticles converting a larger amount of the acetoacetoxy moiety to the enamine form; this approach also allows for measuring the distribution of enamine and AAEM form in the latex polymer particle. The consequence of these findings is that AAEM may be utilized at a lower pH than previously envisioned without consequence to the hydrolysis profile of the acetoacetoxy functionality.     

高性能外墙建筑涂料用树脂的开发

高性能外墙建筑涂料将是我国跨世纪的外墙涂料的主流产品。所谓高性能是指“三高一低”,即高耐候性、高耐沾污性、高保色性和低毒性。介绍了该涂料用有机硅丙烯酸树脂及粉状丙烯酸树脂的开发及其技术诀窍。     

高性能氟碳改性弹性建筑外墙涂料的研制

介绍了一种高性能氟碳改性弹性建筑外墙涂料的制备方法,研究了影响涂膜性能的主要因素,分析了氟碳改性外墙涂料的耐沾污性、耐酸雨性、耐人工老化性及高弹性能机理。     

耐沾污木器漆的研制

介绍了耐沾污木器漆的配方及生产工艺。研制的耐沾污木器漆不仅达到传统木器漆性能,而且具有极低表面能,沾污物易清除。讨论了影响涂料性能的诸种因素。     

常温固化含氟聚氨酯涂料的研究进展

含氟聚氯酯涂料兼备了舍氟树脂及聚氯酯的优异性能而表现出超强的耐候性、耐久性、耐化学性、耐腐蚀性、耐沾污性等特性。介绍了常温固化含氟聚氨酯涂料的研究进展。     

Extended hydrophobicity and self-cleaning performance of waterborne PDMS/TiO<Subscript>2</Subscript> nanocomposite coatings under accelerated laboratory and outdoor exposure testing

It has been shown that incorporation of TiO₂ nanoparticles into hydrophobic coatings can show self-cleaning performance. Accelerated laboratory testing indicated that the coats retain their hydrophobic nature for an extended time period. In this paper, hydrophobic polydimethylsiloxane (PDMS)/TiO₂ nanocomposite coatings with a TiO₂ content of 0–40% were fabricated by simple blending of a PDMS dispersion with an aqueous TiO₂ nanoparticle dispersion. Their long-term hydrophobicity and self-cleaning performance were investigated both in laboratory and real-world outdoor testing. As expected, TiO₂ nanoparticle-based coatings exhibited better self-cleaning relative to the TiO₂-free PDMS control coating as measured by methylene blue degradation testing. Excellent long-term hydrophobicity was observed in accelerated weathering testing when they contained the appropriate levels of TiO₂ nanoparticles (i.e., 0–30%). However, the same PDMS/TiO₂ coatings did not show self-cleaning performance, and instead, exhibited improved dirt pickup resistance, in outdoor exposure testing. Sustained hydrophobicity was observed in outdoor exposure testing for the clear films except when TiO₂ levels were at 40%. The hysteresis of water contact angle (HWCA) significantly increased for the PDMS control coating, and water beading was lost as the film surface picked up dirt. In contrast, the TiO₂-based coatings with appropriate TiO₂ levels maintained a relatively low HWCA after outdoor exposure and no water sheeting on rainy days was observed. This result demonstrates that while photocatalytic TiO₂ nanoparticles can maintain coating hydrophobicity upon outdoor exposure, long-term self-cleaning performance in polluted environments has not yet been achieved with this type of coating under real-world conditions.