Preparation of SiO₂/polymer co-coated colored aluminum pigments with excellent corrosion resistance and UV protection and their application in fabrics

ABSTRACT

In this study, SiO₂/polymer co-coated colored aluminum pigment was prepared by sol-gel method and atom transfer radical polymerization technique. The results of scanning electron microscope (SEM) and transmission electron microscope (TEM) analysis showed that there was a coating layer with the thickness of about 500 nm on the surface of the pigment. X-ray diffraction (XRD) and fourier transform infrared spectroscopy (FT-IR) analysis revealed that the coating layer of the pigment contained SiO₂ and polymer of 2-(Dimethylamino)ethyl methacrylate (DMAEMA), indicated that SiO₂ and the polymer were successfully coated on the surface of the aluminum powder. Moreover, the co-coated layer of SiO₂ and the polymer can effectively prevent the contact between the aluminum powder and the corrosive medium, thereby exhibiting excellent corrosion resistance. In addition, the prepared pigment was made into a pigment paste in a certain ratio and uniformly coated on a polyester fabric, its UPF value was 93.03, which revealed that the coated fabric has excellent ultraviolet protection properties.

Graphical Abstract

KEYWORDS:

• Al pigment modification
• sol-gel method
• ATRP
• corrosion resistance
• ultraviolet protection

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by the Key Research and Development Project of YiWu [2017-Z-09].