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耐沾污性建筑外墙涂料的研究 总被引:4,自引:0,他引:4
从外墙涂料的污染原因出发,分析了提高建筑外墙涂料耐沾污性的几种措施,综述了国内外耐沾污涂料的理论研究和现状,讨论了荷叶效应、自分层技术、微粉化技术以及光催化效应等方法在制备耐沾污性建筑外墙涂料中的优势和存在的问题,指出了制备耐沾污性建筑外墙涂料的方向. 相似文献
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介绍了涂层耐沾污自清洁的相关标准及雨痕实验的测试情况,耐沾污自清洁涂料应用技术。阐述了基于表面能理论的耐沾污、自清洁机理,分析了自清洁技术的研究及应用,总结了最新的研究成果及数据分析结果。 相似文献
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制备了纳米CaCO3复合丙烯酸涂料,通过对其主要性能进行检测表明,当改性纳米CaCO3的添加量为1.5%(质量)时,涂料的耐光性、耐水性、自洁性和贮存稳定性等显著改善。研究了添加轻钙、未改性纳米CaCO3、改性纳米CaCO3及其用量对丙烯酸涂料流变性的影响,结果表明,该体系的流动特性均符合Casson模型;当在丙烯酸涂料中添加1.5%改性纳米CaCO3时,其黏度对温度的敏感性下降,黏度显著降低,剪切稀化能力较强,Casson屈服应力较小,触变性增大,涂料性能改善与其流变性变化基本一致。此外,固体分改变或添加丁醇对添加改性纳米CaCO3复合丙烯酸涂料和传统丙烯酸涂料流变性的影响规律基本相同。 相似文献
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Seyed Armin Zare Estekhraji Sahar Amiri 《Journal of Inorganic and Organometallic Polymers and Materials》2017,27(4):883-891
Anti-corrosion, anti-fungus, and self-cleaning properties of coatings containing ZnO–TiO2, SiO2–TiO2 and SiO2/TiO2/ZnO nanoparticles synthesized based on sol–gel precursors using tetra methoxysilane, 3-glycidoxypropyl trimethoxysilane, tetra (n-butyl orthotitanate) and zinc acetate dihydrate were investigated by FESEM, EDAX and TEM analyses. Results indicated uniform dispersion of inorganic nanoparticles in the range of 20–40 nm in size. Anti-corrosion property of the hybrid coating was characterized by EIS measurements and parametrically analyzed in an equivalent circuit when the coating was exposed to salt solution. Results showed that, ZnO and TiO2 nanoparticles enhance anti-corrosion property of the hybrid coatings. Anti-fungus and anti-bacterial properties of the coatings were determined by diameter of inhibition zone and inhabitation of bacterial growth, respectively. The coating containing ZnO and TiO2 nanoparticles showed anti-fungus and anti-bacterial properties which were related to their photocatalytic properties. Degradation of methylene blue in aqueous solution was determined by UV–Visible tests which indicated self-cleaning property of the coatings containing ZnO and TiO2 nanoparticles. 相似文献
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介绍了人工清洁建筑幕墙屋面清洗之难,光触媒自洁涂料基本原理和要求,建筑幕墙屋面和光电幕墙屋面呼唤自洁和自动除尘涂料。 相似文献
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Sushanta Kumar Sethi 《Polymer-Plastics Technology and Engineering》2018,57(18):1932-1952
The growing interest in self-clean coatings owes to their low maintenance cost, high durability, and immense potential applications. Such coatings, for instance, may offer useful resistance against fouling, icing, smear, corrosion and possesses oil-water separation capability. Hence, the design and development of self-cleaning materials is an area of significant interest to researchers worldwide. This exploration prospectus critically reviews and highlights various types of self-cleaning surfaces, their applications, working mechanisms, and fabrication techniques used globally. The comprehensive literature study suggests that an extensive study of surface behavior towards water and oil may jointly determine its self-cleaning nature. 相似文献
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为了解决纤维用涂层在长期使用过程中污渍吸附和开裂磨损等技术问题,首先合成末端带有呋喃基团的硅烷改性预聚体,然后制备末端带有呋喃基团的改性纳米 TiO2,最后将硅烷改性预聚体、改性纳米 TiO2以及 4,4′-亚甲基双( N-苯基马来酰亚胺)(BMI)进行 DA(Diels-Alder)反应得到树脂 /纳米填料一体化复合涂层,并对涂层的结构和性能以及自清洁、自修复效果进行研究。结果表明:涂层损伤能够在不影响疏水性能的前提下得到修复,同时纤维涂层具有很强的光降解污染物的功能,使该涂层具备自清洁和自修复双重特性,提高了纤维用涂层的使用寿命。 相似文献
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介绍了辽河特大桥防腐蚀涂层体系的选择,以及自清洁氟碳涂料的性能特点、配套体系的技术要求及涂装工艺,并在施工完成6个月后对钢箱梁外表面涂膜状态及自清洁氟碳面漆的自清洁效果进行调查。实践证明,自清洁氟碳涂料在桥梁防腐工程中效果理想,具有良好的应用前景。 相似文献