Rheological behavior of spectrally selective coatings for polymeric solar absorbers

Mihelčič, Mohor (avtor), Klanjšek Gunde, Marta (avtor), Slemenik Perše, Lidija (avtor)

Since the world’s energy demands are growing rapidly, there is a constant need for new energy systems. One of the cleanest, most abundant, and renewable natural resources available is solar energy; therefore, the development of surfaces with high absorption of solar radiation is increasing. To achieve the best efficiency, such surfaces are coated with spectrally selective coatings, which are strongly influenced by the pigments and resin binders. Spectrally selective paints have a very specific formulation, and since the applied dry coatings should exhibit high spectral selectivity, i.e., high solar absorptivity and low thermal emissivity, the rheological properties of liquid paints are of great importance. In the present work, we studied the effect of the rheological properties of liquid thickness-insensitive spectrally selective (TISS) paints on the spectral selectivity and adhesion of dry coatings on a polymeric substrate. The results showed that the functional and adhesion properties of dry coating on polymeric substrates is strongly dependent on the rheological properties of the binder and catalyst used for the preparation of the liquid paints. It was shown that the paints with good spectral selective properties (thermal emissivity e$_T$ < 0.36 and solar absorptivity a$_S$ > 0.92) and good adhesion (5B) can be prepared for polymer substrates.

• Jezik: Angleški jezik
• Ključne besede: spectrally selective paints, polymer solar absorbers, rheological characterization
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FS - Fakulteta za strojništvo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2022
• Št. strani: 15 str.
• Številčenje: Vol. 12, iss. 3, art. 388
• PID: 20.500.12556/RUL-135895
• UDK: 532.135:678
• ISSN pri članku: 2079-6412
• DOI: 10.3390/coatings12030388
• COBISS.SI-ID: 102868227
• Datum objave v RUL: 31.03.2022

Gradivo je del revije

• Naslov: Coatings
• Skrajšan naslov: Coatings
• Založnik: MDPI AG
• ISSN: 2079-6412
• COBISS.SI-ID: 523035673

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
• Začetek licenciranja: 15.03.2022

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: spektralno selektivni premazi, polimerni sončni absorberji, reološka karakterizacija

Projekti

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Številka projekta: P2-0264
• Naslov: Trajnostni polimerni materiali in tehnologije

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Številka projekta: P2-0393
• Naslov: Napredni materiali za nizkoogljično in trajnostno družbo