【摘要】：細(xì)菌、霉菌等微生物的污染對(duì)室內(nèi)空氣品質(zhì)、人體健康、建筑圍護(hù)結(jié)構(gòu)的危害極大;建筑物室內(nèi)的濕度會(huì)影響到建筑圍護(hù)結(jié)構(gòu)的安全、人體的舒適感覺。涂刷功能性建筑涂料是改善這兩種室內(nèi)環(huán)境問題的重要手段。因此,抗菌防霉與濕度控制在涂料的研制中需要進(jìn)行協(xié)同考慮。而納米Zn O抗細(xì)菌、抗霉菌性能良好,安全可靠,成本相對(duì)較低,且與水性涂料的相容性好。因此,本研究擬制備一種綜合建筑性能良好,且兼具抗菌防霉、調(diào)濕作用的功能性建筑涂料。首先,本研究利用綜合法來(lái)制備納米Zn O,采用三種偶聯(lián)劑對(duì)其進(jìn)行表面改性,選擇最佳偶聯(lián)劑種類,并確定其添加質(zhì)量分?jǐn)?shù),利用紅外光譜分析儀(FTIR)和透射電鏡(TEM)來(lái)表征納米粉體化學(xué)結(jié)構(gòu)和分散性的變化。同時(shí),利用偶聯(lián)劑對(duì)苯丙乳液進(jìn)行改性,并通過FTIR和掃描電鏡(SEM)來(lái)表征改性效果。其次,在此基礎(chǔ)上制備ZnO抗菌防霉調(diào)濕涂料,對(duì)所制備的涂料進(jìn)行沉降性分析以及黏度、細(xì)度、附著力、遮蓋力和耐水性等建筑性能的檢測(cè),并對(duì)所研制的涂料進(jìn)行抗細(xì)菌、抗霉菌性能檢測(cè)與分析。結(jié)果表明:KH570對(duì)納米ZnO改性效果最好,且其最佳添加量為5%;表征結(jié)果表明KH570成功接枝到了ZnO表面,降低了其團(tuán)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,納米ZnO添加量為3%的涂料綜合建筑性能最好,附著力為1級(jí),細(xì)度小,黏度相對(duì)較小,遮蓋力性能強(qiáng),耐水性能好;納米ZnO添加量為3%的涂料對(duì)金黃葡萄球菌和大腸桿菌的抑制率分別為細(xì)菌97.5%和93.2%,抗黑曲霉等級(jí)為Ⅱ級(jí),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，

本文編號(hào)：2483697