Abstract
Three polyurethane films were prepared by adding the antioxidant‐1010 and the composite stabilizer to the polyurethane matrix, respectively. The accelerated weathering tests were performed by using self‐designed UV/ozone aging test device. The color difference, yellowness index, UV‐Vis spectrum, and infrared spectrum were recorded with colorimeter apparatus, UV‐Vis spectroscopy, and FT‐IR spectroscopy, respectively. The results show that, for the polyurethane film, the composite stabilizer can remarkably decrease UV transmission, the antioxidant‐1010 and the composite stabilizer can markedly decrease the photooxidation index and the carbonyl index, respectively, and the antioxidant‐1010 can significantly improve the antiyellowing properties after 60 h exposure. With incremental exposure time for the three films, UV‐Vis transmission decreases, the photooxidation index, the carbonyl index, color difference, and yellowness index increase gradually. Under current experimental conditions, the order of UV/O3 aging resistance from highness to lowness is as follows: the polyurethane film modified by the antioxidant‐1010, the polyurethane film modified by composite stabilizer, and the pure polyurethane film.
Highlights
Polyurethane (PU), a polymer containing repeated group (–NHCOO–) on the main chain, is well-known coating materials in a large variety of commercial and technical applications, including adhesives, sealants, coatings, fibers, thermoplastic parts, elastomers, and both rigid and flexible foams [1, 2]
The effects of antioxidants-1010 and composite additives on the UV/ozone resistance properties of polyester PU film were analyzed, which provide some basis in application of the thermoplastic PU to the weathering layer of high-altitude balloon or airship
The slurry was cured on the quartz slide, and the film with theoretical thickness of 30 μm was obtained for testing the color difference, the yellowness index, and the UV-Vis transmittance
Summary
Polyurethane (PU), a polymer containing repeated group (–NHCOO–) on the main chain, is well-known coating materials in a large variety of commercial and technical applications, including adhesives, sealants, coatings, fibers, thermoplastic parts, elastomers, and both rigid and flexible foams [1, 2]. Inorganic UV absorbers, such as nano-ZnO and nano-CeO2, have advantages of good chemical stability, thermal stability, nontoxic, odorless, Journal of Nanomaterials wide wavelength range for the UV shielding, and so forth. They usually affect the transparency of the film. Thermoplastic polyester PU was selected as matrix, and the modified PU films were prepared by adding antioxidants-1010 and composite additives (containing nanoZnO, nano-CeO2, UV-531, UV-327, and the hindered amine622), respectively. The effects of antioxidants-1010 and composite additives on the UV/ozone resistance properties of polyester PU film were analyzed, which provide some basis in application of the thermoplastic PU to the weathering layer of high-altitude balloon or airship
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
