Open AccessStudy on UV-aging performance of fluorinated polymer coating and application on painted muds
Author(s) -
Huiping Huang,
Hongbo Guo,
Yefeng Feng
Publication year - 2020
Publication title -
materials research express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.383
H-Index - 35
ISSN - 2053-1591
DOI - 10.1088/2053-1591/abd3e5
Subject(s) - fourier transform infrared spectroscopy , contact angle , x ray photoelectron spectroscopy , scanning electron microscope , materials science , attenuated total reflection , coating , calcium carbonate , methacrylate , chemistry , polymer , nuclear chemistry , chemical engineering , composite material , engineering , copolymer
The UV-aging tests were carried out on synthetic fluorinated polymer coating (poly (methyl methacrylate)-poly (dodecafluoroheptyl methacrylate), FP) to study its UV-aging mechanism, UV-aging resistance and application on painted muds with calcium carbonate, azurite, haematitum, mineral green and cinnabar pigments. The UV-aging mechanism was studied by Fourier infrared spectroscopy attenuated total reflection technique (ATR-FTIR) and x-ray photoelectron spectroscopy (XPS). The UV-aging resistance of FP was characterized by field emission scanning electron microscope (SEM), CR-400 color difference meter and static contact angle (SCA). The FP was applied on the painted muds samples and the protective efficacy was evaluated by measuring the chromatic variations(ΔE) and water contact angles of samples after treatment. The results of ATR-FTIR and XPS shown that FP only had microphase separation without chemical change after 360h of aging. After 360h of aging, the SEM shown that there were just some bumps on the FP film surface and further proved the phenomenon of microphase separation; the color change of the FP film was no difference (ΔE = 0.46); the FP film could retain adequate hydrophobicity (101.0°). After the painted muds samples were treated by FP, the color change of the calcium carbonate and haematitum was just noticeable difference (ΔE = 0.80 ∼ 1.49), while the color change of the azurite, mineral green and cinnabar was fairly large difference (ΔE = 4.4 ∼ 6.3); all pigments could maintain hydrophobicity at the end of aging. All the results demonstrated that the FP has excellent UV-aging resistance and could provide adequate protective efficacy for calcium carbonate and haematitum, but the protection efficacy for the azurite, mineral green and cinnabar is not ideal. Thus, it is believed that the FP can be used as a suitable UV resistant protective coating for calcium carbonate and haematitum.