Thuy Hoang Thi Huong, Ha Hoang Thu, Vuong Nguyen Thien, Nguyen Tuan Anh
Hong Duc University, 565 Quang Trung, Dong Ve, Thanh Hoa, Thanh Hoa, Vietnam.
VNU-University of Education, Vietnam National University, Hanoi, Vietnam.
J Anal Methods Chem. 2022 Apr 22;2022:8266576. doi: 10.1155/2022/8266576. eCollection 2022.
This study presents a study on the influence of nano-SiO on the alkaline resistance of waterborne acrylic coating using some analysis methods such as FT-IR and UV-Vis spectroscopy, combined with FE-SEM analysis and monitoring weight and adhesion changes during exposure to the saturated Ca(OH) alkaline environment. The obtained results indicated that the alkaline resistance of acrylic coating enhanced appreciably when adding 2.5 wt% of nano-SiO. Under the impact of the saturated Ca(OH) solution for 20 days of immersion, nanocomposite coating containing 2.5 wt.% of nano-SiO was only decreased by 3.6% of the weight and 15.4% of the adhesion, while the neat acrylic coating (without nano-SiO) seriously reduced 25.4% of the weight and 39.1% of the adhesion.
本研究采用傅里叶变换红外光谱（FT-IR）、紫外可见光谱（UV-Vis）等分析方法，结合场发射扫描电子显微镜（FE-SEM）分析以及监测在饱和Ca(OH)碱性环境中暴露期间的重量和附着力变化，对纳米SiO₂对水性丙烯酸涂料耐碱性的影响进行了研究。所得结果表明，添加2.5 wt%的纳米SiO₂时，丙烯酸涂料的耐碱性显著增强。在饱和Ca(OH)溶液中浸泡20天的情况下，含有2.5 wt.%纳米SiO₂的纳米复合涂料的重量仅下降了3.6%，附着力下降了15.4%，而纯丙烯酸涂料（不含纳米SiO₂）的重量严重下降了25.4%，附着力下降了39.1%。
