抗菌防霉调湿涂料的研制及其性能研究
发布时间：2019-05-23 06:59
【摘要】：细菌、霉菌等微生物的污染对室内空气品质、人体健康、建筑围护结构的危害极大;建筑物室内的湿度会影响到建筑围护结构的安全、人体的舒适感觉。涂刷功能性建筑涂料是改善这两种室内环境问题的重要手段。因此,抗菌防霉与湿度控制在涂料的研制中需要进行协同考虑。而纳米Zn O抗细菌、抗霉菌性能良好,安全可靠,成本相对较低,且与水性涂料的相容性好。因此,本研究拟制备一种综合建筑性能良好,且兼具抗菌防霉、调湿作用的功能性建筑涂料。首先,本研究利用综合法来制备纳米Zn O,采用三种偶联剂对其进行表面改性,选择最佳偶联剂种类,并确定其添加质量分数,利用红外光谱分析仪(FTIR)和透射电镜(TEM)来表征纳米粉体化学结构和分散性的变化。同时,利用偶联剂对苯丙乳液进行改性,并通过FTIR和扫描电镜(SEM)来表征改性效果。其次,在此基础上制备ZnO抗菌防霉调湿涂料,对所制备的涂料进行沉降性分析以及黏度、细度、附着力、遮盖力和耐水性等建筑性能的检测,并对所研制的涂料进行抗细菌、抗霉菌性能检测与分析。结果表明:KH570对纳米ZnO改性效果最好,且其最佳添加量为5%;表征结果表明KH570成功接枝到了ZnO表面,降低了其团聚程度,大幅提高了其在苯丙乳液中的分散效果;添加KH570-ZnO的涂料的沉降率最小,纳米ZnO添加量为3%的涂料综合建筑性能最好,附着力为1级,细度小,黏度相对较小,遮盖力性能强,耐水性能好;纳米ZnO添加量为3%的涂料对金黄葡萄球菌和大肠杆菌的抑制率分别为细菌97.5%和93.2%,抗黑曲霉等级为Ⅱ级,抗菌防霉功能良好。
[Abstract]:The pollution of bacteria, mold and other microorganisms is very harmful to indoor air quality, human health and building enclosure structure, and the humidity of building room will affect the safety of building enclosure structure and the comfortable feeling of human body. Painting functional architectural coatings is an important means to improve these two indoor environmental problems. Therefore, antibacterial and mildew resistance and humidity control need to be considered in the development of coatings. However, nano-Zn O has good antibacterial properties, safety and reliability, relatively low cost, and good compatibility with waterborne coatings. Therefore, this study intends to prepare a functional architectural coating with good building performance, antibacterial and mildew resistance and humidification. First of all, the synthesis method was used to prepare nano-Zn O. Three kinds of coupling agents were used to modify the surface, the best coupling agent type was selected, and the mass fraction of the coupling agent was determined. The chemical structure and dispersion of nano-powder were characterized by infrared spectroscopy (FTIR) and transmission electron microscope (TEM). At the same time, styrene-acrylic emulsion was modified by coupling agent, and the modification effect was characterized by FTIR and scanning electron microscope (SEM). Secondly, on this basis, ZnO antibacterial, anti-mildew and moisture-regulating coatings were prepared, and the settlement analysis, viscosity, fineness, adhesion, covering power and water resistance of the coatings were tested, and the antibacterial properties of the coatings were also carried out. Detection and analysis of antifungal properties. The results showed that KH570 had the best modification effect on nano-ZnO, and the optimum addition amount was 5%. The characterization results showed that KH570 was successfully grafting to the surface of ZnO, which reduced the degree of agglomeration and greatly improved the dispersion effect of KH570 in styrene-acrylic emulsion. The settlement rate of the coating added with KH570-ZnO is the smallest, and the comprehensive building performance of the coating with 3% nano-ZnO content is the best, the adhesion is grade 1, the fineness is small, the viscosity is relatively small, the covering power is strong, and the water resistance is good. The inhibition rates of Staphylococcus aureus and Escherichia coli against Staphylococcus aureus and Escherichia coli were 97.5% and 93.2%, respectively. the grade of resistance to Aspergillus nigra was grade 鈪，
本文编号：2483697
[Abstract]:The pollution of bacteria, mold and other microorganisms is very harmful to indoor air quality, human health and building enclosure structure, and the humidity of building room will affect the safety of building enclosure structure and the comfortable feeling of human body. Painting functional architectural coatings is an important means to improve these two indoor environmental problems. Therefore, antibacterial and mildew resistance and humidity control need to be considered in the development of coatings. However, nano-Zn O has good antibacterial properties, safety and reliability, relatively low cost, and good compatibility with waterborne coatings. Therefore, this study intends to prepare a functional architectural coating with good building performance, antibacterial and mildew resistance and humidification. First of all, the synthesis method was used to prepare nano-Zn O. Three kinds of coupling agents were used to modify the surface, the best coupling agent type was selected, and the mass fraction of the coupling agent was determined. The chemical structure and dispersion of nano-powder were characterized by infrared spectroscopy (FTIR) and transmission electron microscope (TEM). At the same time, styrene-acrylic emulsion was modified by coupling agent, and the modification effect was characterized by FTIR and scanning electron microscope (SEM). Secondly, on this basis, ZnO antibacterial, anti-mildew and moisture-regulating coatings were prepared, and the settlement analysis, viscosity, fineness, adhesion, covering power and water resistance of the coatings were tested, and the antibacterial properties of the coatings were also carried out. Detection and analysis of antifungal properties. The results showed that KH570 had the best modification effect on nano-ZnO, and the optimum addition amount was 5%. The characterization results showed that KH570 was successfully grafting to the surface of ZnO, which reduced the degree of agglomeration and greatly improved the dispersion effect of KH570 in styrene-acrylic emulsion. The settlement rate of the coating added with KH570-ZnO is the smallest, and the comprehensive building performance of the coating with 3% nano-ZnO content is the best, the adhesion is grade 1, the fineness is small, the viscosity is relatively small, the covering power is strong, and the water resistance is good. The inhibition rates of Staphylococcus aureus and Escherichia coli against Staphylococcus aureus and Escherichia coli were 97.5% and 93.2%, respectively. the grade of resistance to Aspergillus nigra was grade 鈪，
本文编号：2483697
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