We prepared a series of polyurethane (PU) coatings with defined contents using poly(tetramethylene oxide)glycol (PTMG) with two different molecular weights (i.e., = 2000 and 650), as well as polydimethyl siloxane (PDMS) with a molecular weight of 550. For every coating, maximum adhesive strength and excellent self-healing character (three times) were found using 6.775 mol% mixed with low-molecular-weight-based polyols (PU-11-3-3). Defined 1.0 wt% CeO was also used for the PU-11-3-3 coating (i.e., PU-11-3-3-CeO) to obtain UV shielding properties. Both the in situ polymerization and blending processes were separately applied during the preparation of the PU-11-3-3-CeO coating dispersion. The in situ polymerization-based coating (i.e., PU-11-3-3-CeO-P) showed similar self-healing properties. The PU-11-3-3-CeO-P coating also showed excellent UV shielding in real outdoor exposure conditions.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7565661 | PMC |
| http://dx.doi.org/10.3390/polym12091947 | DOI Listing |
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