Development of paints with infrared radiation reflective properties
| Autor: | Carlos Arthur Ferreira, Arno Krenzinger, Eliane Coser, Vicente Fróes Moritz |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Tinta
Materials science business.industry Infrared Organic Chemistry colored reflecting pigments Radiation lcsh:Chemical technology Pigmentos Optics Solar reflectance Air conditioning solar spectral reflectance Air temperature near-infrared reflectance Thermal Chemical Engineering (miscellaneous) Refletividade lcsh:TP1-1185 Thermal emittance Radiação solar cool paints business Absorption (electromagnetic radiation) cool pigments |
| Zdroj: | Polímeros, Vol 25, Iss 3, Pp 305-310 (2015) Polímeros v.25 n.3 2015 Polímeros (São Carlos. Online) Associação Brasileira de Polímeros (ABPol) instacron:ABPO Repositório Institucional da UFRGS Universidade Federal do Rio Grande do Sul (UFRGS) instacron:UFRGS Polímeros, Volume: 25, Issue: 3, Pages: 305-310, Published: JUN 2015 |
| ISSN: | 0104-1428 |
| DOI: | 10.1590/0104-1428.1869 |
| Popis: | Large buildings situated in hot regions of the Globe need to be agreeable to their residents. Air conditioning is extensively used to make these buildings comfortable, with consequent energy consumption. Absorption of solar visible and infrared radiations are responsible for heating objects on the surface of the Earth, including houses and buildings. To avoid excessive energy consumption, it is possible to use coatings formulated with special pigments that are able to reflect the radiation in the near- infrared, NIR, spectrum. To evaluate this phenomenon an experimental study about the reflectivity of paints containing infrared-reflective pigments has been made. By irradiating with an IR source and by measuring the surface temperatures of the samples we evaluated: color according to ASTM D 2244-14, UV/VIS/NIR reflectance according to ASTM E 903-12 and thermal performance. Additionally, the spectral reflectance and the IR emittance were measured and the solar reflectance of the samples were calculated. The results showed that plates coated with paints containing IR-reflecting pigments displayed lower air temperature on the opposite side as compared to conventional coatings, indicating that they can be effective to reflect NIR and decrease the temperature of buildings when used in roofs and walls. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|