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Study of coil coatings behaviour in atmospheres with high ultraviolet radiation
Author(s) -
Santos D.,
Soares Vieira A.,
Almeida E.
Publication year - 2000
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/1521-4176(200007)51:7<481::aid-maco481>3.0.co;2-g
Subject(s) - polyester , gloss (optics) , polyurethane , materials science , fourier transform infrared spectroscopy , polymer chemistry , nuclear chemistry , composite material , coating , chemistry , physics , optics
Coil coating is a continuous strip coating technology, which enjoyed rapid growth, and nowadays paints of different nature are applied on a range of metal substrates for several markets. In this work, three different coil coatings, namely polyurethane, polyester and plastisol‐based coatings of a blue colour, were studied. These coatings have been exposed in two environments with high U.V. radiation (natural and artificial) and their colour change, gloss reduction and chalking were evaluated. Chemical changes on exposed surfaces were studied by Fourier transform infrared spectroscopy (FTIR). For polyurethane and polyester coatings, good correlation was found between the results obtained for both considered environments.