Sự suy giảm của màng nhựa acrylic nhũ tương primal AC-261 trong môi trường thời tiết nhân tạo

Nguyễn Thiên Vương, Đào Phi Hùng, Nguyễn Anh Hiệp, Mạc Văn Phúc, Trịnh Văn Thành, Đinh Thị Liên

Abstract


The degradation of the Primal AC-261 water-based acrylic film (AC-261) in the artifical weathering environment has been studied by fourier-transform infrared (FTIR) and ultraviolet - visible (UV-Vis) spectroscopy, microscope and weight loss analysis. The IR and UV-Vis analysis showed that the level of C-H (alkanes) and C-O- (ester) stretchings decreased while O-H, C=O and C=C (alkene) stretchings increased in the artifical weathering testing process by a QUV weathering chamber equipped with UVB-313 fluorescent lamps and operated under wet-cycle conditions of 8 h UV irradiation at 60 °C, followed by 4 h of dark water condensation at 50 °C. After 96 cycles (1152 hours), the film surface had many black spots and weight loss of the film was 18 %.


Keywords


Degradation, water-based acrylic film, artifical weathering, FTIR, UV-Vis

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