SiO2包覆铝粉(Al@SiO2)是目前应用最广的水性金属颜料, 但Al@SiO2仍为银色, 且不能耐强酸强碱腐蚀.依据SnO2的特性,SnO2包覆铝粉(Al@SnO2)可制得耐腐蚀性更优的水性金属颜料,且该颜料兼具光催化活性和隐身性能.本文前驱体采用无水四氯化锡/异丙醇,反应介质采用异丙醇/水,探讨了核为铝片,壳为SnO2,桥为Al(OH)3或Sn(OH)2的Al@SnO2在弱酸性条件下的制备原理.采用光学显微镜、X衍射、光催化降解效率和耐腐蚀性测试等表征手段,探讨了制备条件对Al@SnO2水性颜料的耐腐蚀性,色相及光催化性能的影响.
SiO2 encapsulated aluminum pigment(Al@SiO2)is the most widely used waterborne metal pigment. However, Al@SiO2 is still silvery and the anti-corrosion property in strong alkalinity and acidity media are limited. According to the characteristics of SnO2, if SnO2 is encapsulated on aluminum pigment, the waterborne aluminum pigment with superior corrosion resistance and photocatalytic activity would be obtained. Here, SnCl4/isopropyl as precursor in isopropyl/H2O at weak acidity media, the preparation principle of SnO2 encapsulated aluminum pigment(Al@SnO2)that used aluminum as core, SnO2 as shell and Al(OH)3 or Sn(OH)2 as bridge were studied. The effect of preparation conditions on the anti-corrosion resistance, hue and photocatalytic activity of Al@SnO2 were studied using optical microscopy, X-ray diffraction, anti-corrosion resistance and photocatalytic degradation efficiency test.
[1] 皮丕辉,陈军,李利君,等.纳米SiO2包覆改性薄片铝粉颜料及其耐酸性研究[J].湖南大学学报(自然科学版),2009,36(12):53-58.
[2] 刘辉,叶红齐,林天全,等.颜料铝粉包覆SiO2的研究[J].材料保护,2008,41(1):38-40.DOI:10.3321/j.issn:1005-023X.2006.z1.082.
[3] 刘辉,叶红齐,张赢超.丙烯酸-苯乙烯原位共聚包覆颜料铝粉[J].中国粉体技术,2007,13(3):18-20.DOI:10.3969/j.issn.1008-5548.2007.03.006.
[4] LI L J, PI P H, WEN X F, et al. Optimization of sol-gel coatings on the surface of aluminum pigments for corrosion protection [J].Corrosion Science,2008,50:795-803.DOI:10.1016/j.corsci.2007.11.002.
[5] 韩凯,张赢超,叶红齐.彩色铝粉Fe2O3/SiO2/Al的液相沉积制备与表征[J].中国有色金属学报,2009,21(12):3169-3174.DOI:10.19476/j.ysxb.1004.0609.2011.12.028.
[6] 雷美娟,王莉玮,高仁金,等.双层包覆法制备彩色铝颜料[J].化学工程与装备,2015,7:24-26.
[7] 李晓光.片状磁性吸波材料的制备及其兼容隐身性能研究[D].南京:南京航空航天大学,2014.
[8] 殷国祥,孙勇,杨宁,等.片状铝粉包覆着色的研究[J].南方金属,2009,171:22-25.DOI:10.3969/j.issn.1009-9700.2009.06.007.
[9] J A迪安.兰氏化学手册[M].第13版.科学出版社,1991.
[10] 丁尔峰,崔容强,周之斌,等.采用USP-CVD沉积SnO2透明导电膜-F、Sb掺杂及特性研究[J].电源技术,2004,28(12):779-783.DOI:10.3969/j.issn.1002-087X.2004.12.013.
[11] 李春鸿,王岚.用水溶液常压蒸发热解法制备SnO2薄膜及其性能研究[J].太阳能学报,1985,6(4):405-411.
[12] WU Y, WANG H, CAO M D, et al. Animal bone supported SnO2 as recyclable photocatalyst for degradation of rhodamine B dye[J].Journal of Nanoscience and Nanotechnology,2015,15(9):6495-6502.DOI:10.1166/jnn.2015.10781.
[13] Balázs Réti, Nóra Péter, András Dombi, et al. Preparation of SnO2-TiO2/MWCNT nanocomposite photocatalysts with different synthesis parameters[J].Physica Status Solidi B-Basic Solid State Physics,2013,250(12):2549-2553.DOI:10.1002/pssb.201300076.
[14] 杨岳洋,江书安,李建军,等.pH对氢氧化铝晶型影响分析[J].无机盐工业,20017,49(11):39-41.
