In respect to surface cracking, furfurylated radiata pine deck generally showed minor surface cracks, while furfurylated maple deck presented the lowest degree of surface and end splitting. In overall, the furfurylated wood decks tested performed very well and showed no signs of black staining (except for the southern yellow pine deck)
Get PriceThe boards may warp and cup, particularly in decking applications. These other weathering factors such as mildew growth, check ing, splitting, and warping, are often more important than the photo-oxidation, but these processes often act in concert to degrade the surface (see Figure 7.1).
Get PriceIn the early stages of weathering, dark woods tend to become light and light woods, dark. Eventually, all woods become gray if fully exposed to UV light and water spray. As can be seen in Table 5, ∆L*values of some samples were negative after 336 h exposure, but values became positive after 672 h exposure.
Get PriceKataoka et al. (2007) have determined that UV light can penetrate the wood up to 66 μm (for radiation with wavelength of 246 nm) in the case of shorter wavelengths and up to 178 μm (for radiation with wavelength of 372 nm) in the case of longer wavelengths.
Get PriceThe color stability was determined to be better for pine wood treated with micronized copper preservative coated with UV absorber, in comparison to when it was only coated with UV absorbers and then subjected to weathering
Get PriceWood exposed to the weatherCan be protected by paints, stains, or varnishes. Paints provide the most protection to exposed wood surfaces, since they are generally opaque to the degradative effects of ultraviolet light and protect wood to some degree against wetting. Paint perfomance may vary greatly on different woods.
Get PriceWater vapor fills the test chamber, which reaches 100% humidity at equilibrium. Vapor continually condenses on the test panels, which are kept at a lower temperature by room air on the back surface of the wood substrates. Condensation runs off the test panels and back into the water pan.
Get PriceHenrik Schmidt, Jan T. Benthien and Heiko Thoemen, Processing and flexural properties of surface reinforced flat pressed WPC panels, European Journal of Wood and Wood Products, 71, 5, (591), (2013). Crossref
Get PricePROPERTIES OF HEAT-TREATED ALDER WOOD Sibel Yildiz,a,* Umit C. Yildiz,a and Eylem D. Tomak a The objective of this study was to investigate the effect of natural weathering in ground contact on biological resistance * ...
Get PriceThe color stability was determined to be better for pine wood treated with micronized copper preservative coated with UV absorber, in comparison to when it was only coated with UV absorbers and then subjected to weathering
Get Priceproperties. Wood weathering outdoors is induced by solar radiation, UV, visible (Vis)), infrared (IR), moisture (dew, rain, snow, and humidity), and temperature and oxygen. Of these factors, the UV portion of solar radiation is the [1] ...
Get PriceFree Online Library: A new look at the weathering performance of solid-wood decking materials. by "JCT CoatingsTech"; Business Chemicals, plastics and rubber Building materials Building materials industry Global temperature
Get PriceEffects of Weathering on Some Physical Properties of Wood
Get PriceWEATHERING PROPERTIES OF WOOD SPECIES TREATED WITH DIFFERENT COATING APPLICATIONS Ozlem Ozgenca*, Salim Hiziroglub, Umit C. Yildizc ABSTRACT The objective of this study was to evaluate discoloration of
Get PriceThis Wood Information Sheet (WIS) explains the causes of weathering and its significance to timber performance. This is an overview of the subject with signposts to more detailed sources that are listed at the end.
Get PriceEFFECT OF HEAT TREATMENT ON THE WEATHERING AND HARDNESS PROPERTIES OF SOME WOOD SPECIES SIVRIKAYA, H.1 EKINCI, E.1 CAN, A.1 TASDELEN, M.1 GOKMEN,K.1 ABSTRACT Thermal modification ...
Get Pricedeck and superstructure weathering 9308 views 21 replies Order Ascending Order Descending paintchips Member since September 2005 deck and superstructure weathering Posted by paintchips on Thursday, October 20, 2005 ...
Get PriceInfluence of Artificial and Natural Weathering on the Hydrophobicity and Surface Properties of Wood The use of wood in outdoor, above-ground applications is increasing in Europe. To further increase wood usage, more information related to service life and maintenance costs must be provided.
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