纳米微孔硅基内墙涂料的调湿性能研究

发布时间：2018-05-02 21:16

本文选题：纳米微孔硅 + 调湿性能　；参考：《哈尔滨工业大学》2017年硕士论文

【摘要】：纳米微孔硅是由古代硅藻等遗体经过地质作用形成的一种生物沉积岩,其主要化学成分是SiO_2,具有质轻、比表面积大、孔隙率高、吸附性强等特点。纳米微孔硅自身具有的独特的物理化学性质,使其具有良好的吸放湿能力,不仅可用作调湿材料,同时具有杀菌、除臭、吸附甲醛等功能。本文将纳米微孔硅作为一种功能填料加入涂料中,研制出具有调湿功能的环保内墙涂料。本文通过比表面积法(BET、BJH)对其孔结构进行了表征,通过X射线衍射(XRD)、X射线荧光光谱分析(XRF)对其结构进行了分析,以及通过扫描电镜观察了其表面形貌,并通过等湿吸湿曲线和吸放湿速度曲线对其吸放湿性能进行评价,对其调湿机制进行了探讨研究。本文将纳米微孔硅作为一种新型功能填料,并添加高岭土、硅灰石粉和钛白粉等颜填料及助剂,基料选用丙烯酸乳液,进行配方设计研究。将颜、填料和乳液作为常用因子,利用正交试验进行配合比设计,分为四个水平,并对涂料样品的常规性能和吸放湿进行测试,通过直观分析法评价出性能最佳的涂料配方。比表面积大小和孔结构特征是影响纳米微孔硅吸放湿性能的重要因素。在正交试验的基础上,本文还研究了作为调湿材料的纳米微孔硅的粒径大小对涂料样品吸放湿性能的影响。随着纳米材料和纳米技术的发展,纳米材料在建筑材料领域也得到了广泛应用。本文将纳米TiO_2加入调湿涂料制成纳米复合涂料,研究了纳米TiO_2的添加量对涂料常规性能和吸放湿性能的影响。
[Abstract]:Nano-porous silicon is a kind of biosedimentary rock formed by geological process of ancient diatom and other remains. Its main chemical composition is SiO-2, which has the characteristics of light weight, large specific surface area, high porosity and strong adsorption. Because of its unique physical and chemical properties, nanometer microporous silicon can be used not only as humidity-regulating material, but also as bactericidal, deodorizing and formaldehyde adsorbent. In this paper, nanometer microporous silicon was added into the coating as a functional filler, and an environmentally friendly interior wall coating with moisture regulating function was developed. In this paper, the pore structure was characterized by specific surface area method (BET-BJH), the structure was analyzed by X-ray diffraction (XRD) and X-ray fluorescence spectroscopy (XRF), and the surface morphology was observed by scanning electron microscope (SEM). The moisture absorption and desorption performance were evaluated by the ismoisture absorption curve and the moisture absorption and desorption rate curve, and the humidity-regulating mechanism was studied. In this paper, nanometer microporous silicon is used as a new type of functional filler, and the additive and pigment filler such as kaolin, wollastonite and titanium dioxide are added, and acrylic emulsion is used as the base material to design the formula. The pigment, filler and emulsion were used as common factors, and the mixture ratio was designed by orthogonal test, which was divided into four levels. The conventional properties and moisture absorption and desorption of coating samples were tested, and the best coating formulation was evaluated by visual analysis. The specific surface area and pore structure are important factors affecting the moisture absorption and desorption performance of nano-porous silicon. On the basis of orthogonal test, the effect of particle size of nano-porous silicon on the moisture absorption and desorption properties of coatings was also studied. With the development of nanomaterials and nanotechnology, nanomaterials have been widely used in the field of building materials. In this paper, nanometer TiO_2 was added to moisturizing coatings to prepare nano-composite coatings. The effects of the amount of nano- on the conventional properties and moisture absorption and desorption properties of the coatings were studied.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU561.61

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