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Study on the retention and distribution of copper based preservatives in Chinese fir

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Document pages: 9 pages

Abstract: Although some studies on wood permeability and its improvement measures have been carried out, some progress has been made in the study of the diffusion and transfer of preservative solution in upright trees. In this study, copper based preservatives and other reagents were injected into Chinese fir standing trees by liquid flow method. Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) were used to analyze the chemical composition of returning farmland wood. Scanning electron microscopy (SEM) and atomic absorption spectrometry (AAS) were used to analyze the samples at different heights to obtain the microstructure and preservative retention. The results show that the lower concentration of anti-corrosion solution is more conducive to improve the anti-corrosion effectto diffusion and transmission in the wood. Moreover, the preservative retention at different height position has a greater concentration gradient for composite preservative solutions than those of the single preservative solutions. Solidified preservative particles are observed in xylem rays with SEM. The results of the present study provide some useful information for the functional design of the target wood products.

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