Effect of structure-controlled aluminum silicate nanofiller on surface properties of emulsion coating films

被引:0
作者
Fumihiko Ohashi
Kenji Arai
Atsushi Shibahara
机构
[1] National Institute of Advanced Industrial Science and Technology,
[2] Fujikura Kasei Co.,undefined
[3] Ltd.,undefined
来源
Journal of Coatings Technology and Research | 2022年 / 19卷
关键词
Aluminum silicate; Nanofiller; Coating film; Wettability; Antifouling ability;
D O I
暂无
中图分类号
学科分类号
摘要
A non-crystalline aluminum silicate related to allophane (i.e., clay mineral) was synthesized by a hydrothermal reaction after which the synthetic mineral was mixed with clear or multicolored aqueous emulsion paint as a nanofiller. The nanofiller was revealed by X-ray diffraction to have an amorphous morphology, showed a narrow particle size distribution with a volume mean diameter of 1.2 µm and indicated a specific surface area of 228 m2/g. Clear films prepared with the nanofiller had significantly improved wettability compared to a blank film. The results of outdoor exposure tests exhibited that multicolored films with the nanofiller showed higher antifouling ability than films with a commercially available silica filler. A proposed antifouling mechanism is that the proportion of Si-OH and Al-OH active sites exposed on the nanofiller surface had a significant effect on the surface wettability of the films and exquisitely controlled the sliding of rain droplets.
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页码:355 / 360
页数:5
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