【作者】 孙作凤；

【导师】 黄婉霞；

【作者基本信息】 四川大学 ， 材料学， 2005， 硕士

【摘要】 本文在简要叙述国内外建筑涂料和纳米复合建筑涂料的应用研究现状的基础上,提出了使用无机纳米粉体及其复合材料改性建筑外（内）墙乳胶漆的创新思路,系统地研究了纳米粉体材料的种类、添加量、分散方式等因素对外墙乳胶漆耐候性、耐洗刷性、耐水耐碱性等性能的影响,以及这些因素对内墙乳胶漆抗菌杀菌、降解有害有机物等性能的影响,成功地开发了纳米改性建筑外墙和内墙乳胶漆产品。通过对纳米粉体及其复合材料水分散体进行UV-Vis光学性能的研究表明,纳米SiO₂、TiO₂和ZnO粉体及复合纳米SiO₂+TiO₂粉体材料对紫外线具有优异的屏蔽特性,多元纳米复合材料分散体系的紫外屏蔽能力强于单一纳米材料分散体系。采用不同的分散工艺,将纳米SiO₂、TiO₂粉体及其复合材料加入普通乳胶漆中制备纳米改性外墙乳胶漆,对其性能研究的结果表明,纳米粉体材料的引入,可以明显提高乳胶漆的耐候性、耐洗刷性和耐水耐碱性能,对其它性能无不良影响。通过对锐钛型纳米二氧化钛和抗菌粉（掺杂银、铈离子）等光催化纳米材料的UV-Vis光学分析、定性抗菌试验、定量抗菌试验的研究表明,复合掺杂银、铈等稀土离子的锐钛型纳米二氧化钛,其UV-Vis漫反射光谱明显红移,大大加强了它对可见光的吸收能力,因此除了在紫外光为光源的条件下具备光催化能力,在普通光源条件下也具备光催化能力。采用不同的分散工艺,将抗菌粉加入普通内墙乳胶漆制得纳米抗菌内墙乳胶漆,对其性能研究的结果表明,纳米粉体的引入可以在保持其原有功能的基础上,赋予内墙乳胶漆新的功能,即光催化降解甲醛等有害有机物、抑菌杀菌等。更多还原

【Abstract】 On the basics of briefly summarizing the research and application presents of building coatings and nano-composite building coatings in domestic and overseas, we presented a creative approach of modified exterior and interior building latex coatings applying inorganic nano-powders and its compound, systematically studied the effect of factors such as nano-material’s category、additive capacity、dispersing method on the behavior of exterior building coating’s weathering resistance、scratch resistance、water resistance、alkaline resistance and on the behavior of interior building coating’s restraining bacterium、degrading all kinds of bad organic matter,and triumphantly developed nano-composite building latex coating. According to study on UV-Vis optical property of nano-powder materials and its compounds we turned out that nano-TiO₂、nano-SiO₂ have excellent characteristics to UV shielding, and dispersing system of polybasic nano-composite materials owned higher UV shielding capability than single disperse system. Employing different dispersing technology, applying nano-TiO₂、nano-SiO₂ and its composite powders to normal acrylic or styrene-acrylic latex coatings to manufacture nano-modified latex coatings. The results of performance testing showed that the additive of nano-powders can evidently enhance the latex coatings’ weathering resistance、scratch resistance、water resistance and alkaline resistance, and do not reduce other performances. According to study on UV-Vis opitical property、qualitative antibacterial experiment 、quantitative antibacterial experiment of anatase nano-TiO₂ and antibacterial powder （adulterated by Ag ion and Ce ion） we turned out that antibacterial powder’s diffuse reflection spectrum obviously Einstein shift which makes it can absorb more visible-light. Not only irradiated by UV-light but also irradiated by visible-light antibacterial powder both possess photocatalytic capability, which brought new functions that improve latex’s quality. Employing different dispersing technology, applying anatase nano-TiO2、antibacterial powder to normal interior latex coating to manufacture nano-modified latex coating. The results of performance testing showed that the additive of nano-powders can evidently imrove the latex coating’s quality, such as restraining bacterium、sterilizing bacterium and degrading all kinds of bad organic matters, at the same time do not reduce other performances.更多还原