(1. 電子科技大學(xué) 中山學(xué)院 化學(xué)與生物系，中山 528402；2. 中山大學(xué) 化學(xué)與化學(xué)工程學(xué)院，廣州 510275)
摘 要: 通過丙烯酸原位聚合包覆片狀鋁粉制備水性鋁顏料，考察丙烯酸、過硫酸銨、異丙醇和水的用量、反應(yīng)溫度和反應(yīng)時(shí)間對(duì)顏料的緩蝕效率和涂膜光澤度的影響。結(jié)果表明：在丙烯酸、過硫酸銨、異丙醇、水和片狀鋁粉的質(zhì)量比為0.15׃0.075׃0.5׃25׃1，95 ℃反應(yīng)0.5 h的條件下，制備的水性鋁顏料緩蝕效率達(dá)99.3％，涂膜光澤度為88.3 Gs。通過掃描電鏡、激光粒度分析和紅外光譜對(duì)水性鋁顏料進(jìn)行表征，結(jié)果表明水性鋁顏料表面包覆了聚丙烯酸。
關(guān)鍵字: 水性鋁顏料；丙烯酸；原位聚合；緩蝕效率；涂膜光澤度
in-situ polymerization of acrylic acid
（1. Department of Chemistry and Biology, Zhongshan Institute,
University of Electronic Science and Technology of China, Zhongshan 528402, China;
2. School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China）
Abstract:In order to prepare waterborne aluminum pigments, the flaky aluminum powders were coated with polyacrylic acid through in-situ polymerization. The effects of dosage of acrylic acid, ammonium persulfate, isopropanol and water, reaction temperature and reaction time on corrosion inhibiting efficiency and coater gloss of pigment were experimentally investigated. The results show that when waterborne aluminum pigments are prepared under conditions of mass ratio of acrylic acid, ammonium persulfate, isopropanol, water and Al of 0.15׃0.075׃0.5׃25׃1, reaction temperature of 95 ℃ and reaction time of 0.5 h, the corrosion inhibiting efficiency and the coater gloss reach 99.3% and 88.3Gs, respectively. Furthermore, the waterborne aluminum pigments were analyzed by scanning electron microscopy, laser particle size analysis and Fourier transform infrared spectrum, which reveal that the flaky aluminum powders are successfully coated with polyacrylic acid.
Key words: waterborne aluminum pigment; acrylic acid; in-situ polymerization; corrosion inhibiting efficiency; coater gloss
