Heat treatment technology can improve the dimensional stability, durability, and color of masson
pine wood, and it is widely used because of its proper environmental protection. However, it has the disadvantages
of easy mildew. During the heat treatment process, the saccharides in wood migrate with the evaporation of water
or degrade under high temperature, accompanied by changes in the pH value of wood. The content of various
sugars in the wood and the pH value are important factors affecting the growth and reproduction of mold. In this
study, masson pine wood was taken as the primary object, using a combination of in-situ preparation of nano copper and high-temperature heat treatment. The experiment was designed by single-factor method, to explore the
effects of different heat treatment methods on the content of soluble total soluble sugar, reducing sugar, and pH
value of masson pine wood. The research results show that: the soluble total sugar and reducing sugar concentration is higher than the untreated material, that of the copper-containing heat-treated material is lower than the un-treated material, and the copper-containing heat-treated materials treated with a concentration of 7.70% and then
treated at 220℃ /3 h have the lowest total sugar and reducing sugar concentrations, which are 48.7% and 33.8%
lower than the untreated material, and 538.7% and 61.4% lower than the heat-treated material at 220℃ for 3 h, so
the introduction of nano-copper particles effectively reduces the content of various sugars of heat treatment material, reduce the mildew risk of heat-treated wood to a certain extent; The pH value of heat-treated wood is between
4.38 and 5.10, which is acidic, and the pH value of copper-containing heat-treated wood is between 6.63 and 7.12,
which is weak or moderate, it can reduce molds that are easy to grow in an acidic environment. At the same time,
according to the pH value of different strains suitable for growth, it can establish more targeted anti-mold measures and improve the control effectiveness of wood against specific strains.
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