Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6714521 | Construction and Building Materials | 2018 | 7 Pages |
Abstract
The poor anti-weathering performance of thermally modified wood is always an issue that influences its appearance as well as its service life after exposure in outdoor circumstance. In this study, titania (TiO2) sol, paraffin emulsion, and their combination were used to impregnate thermally modified Scots pine (Pinus sylvestris L.) sapwood, modified at 212â¯Â°C, and then the samples were subjected to an accelerated weathering test for up to 1176â¯h. The time-dependent changes on surface color, gloss and water contact angle (WCA) of control and post-treated samples were investigated during the weathering process. Moreover, the chemical and morphological alterations were analyzed by attenuated total reflected Fourier transform infrared (ATR-FTIR) spectroscopy and scanning electron microscopy (SEM). The results showed that TiO2 was not resistant to water but addition of paraffin emulsion improved the adherence of TiO2 on wood surface. After post-treatment with TiO2 sol and paraffin emulsion, the anti-weathering performance of thermally modified wood improves due to the controlling of negative effects from ultraviolet and water on wood surface, respectively. The degradation of wood components decreased significantly in TiO2/paraffin treated samples, which was confirmed by the FTIR and SEM results.
Keywords
Related Topics
Physical Sciences and Engineering
Engineering
Civil and Structural Engineering
Authors
Haiying Shen, Shaodi Zhang, Jinzhen Cao, Jun Jiang, Wang Wang,