Solar reflectance, adhesion and thermal properties of TiO 2/polyurethane coating onto wood/natural rubber composite sheet
Conference proceedings article
Authors/Editors
Strategic Research Themes
No matching items found.
Publication Details
Author list: Hamaviriyapornwattana N., Markpin T., Sombatsompop N., Wimolmala E.
Publisher: Hindawi
Publication year: 2010
Volume number: 2
Start page: 1396
End page: 1398
Number of pages: 3
ISBN: 9781632660756
eISSN: 1745-4557
Languages: English-Great Britain (EN-GB)
Abstract
In this study, the effects of coating thickness and titanium dioxide (TiO2) dosage in polyurethane (PU) coating on near infrared (NIR) reflectance, adhesion, crack resistance to bending, and thermal conductivity for wood/natural rubber (WNR) composite sheet before and after a prolonged UV ageing condition. The TiO2 powder content to be added in the PU coating was varied from 0-15 parts per hundred (pph) of polyurethane. The PU coating thickness on WNR composite sheet was varied from 130 to 300 micrometers. The experimental results suggested that the solar reflectance slightly increased with increasing TiO2 powder, but did not change with varying the PU coating thicknesses used in this work. Increasing TiO2 powder into the PU coating resulted in a slight increase in thermal conductivity of TiO2/PU coated WNR composite layer. Under UV accelerated weathering tester (QUV-UVB 313nm), the lightness of the PU coating slightly increased whereas the NIR reflectance, layer adhesion and crack resistance to bending test remained unaffected with increasing the UV ageing time.
Keywords
Polyurethane
Contact Information