Decoloring treatment method for Paulownia woods

Abstract

The invention discloses a decoloring treatment method for Paulownia woods, and the method can be used for effectively solving the decoloring treatment problem of decolored Paulownia woods. The method comprises the following steps: dividing a raw Paulownia wood into rough-edged boards with the thickness of 12 mm along the height direction of the raw Paulownia wood, removing the edges of the rough-edged boards, and sawing the rough-edged boards into integral-edged boards, stacking the integral-edged boards into a treating pond, separating each layer of integral-edged boards by using long battens, and stacking and fixing the integral-edged boards into the treating pond; and adding water, sodium hydroxide and sodium dodecyl benzene sulfonate into the treating pond, submerging the integral-edged boards, soaking the integral-edged boards 1-5 days at 5-40 DEG C, wherein the sodium hydroxide accounts for 0.1-0.3wt% of the water and the sodium dodecyl benzene sulfonate accounts for 0.005-0.05wt% of the water; adding hydrogen peroxide and sodium bicarbonate into the treating pond, uniformly stirring the obtained object and soaking the integral-edged boards 2-3 days at 5-40 DEG C, wherein the hydrogen peroxide accounts for 2-5wt% of the water and the sodium bicarbonate accounts for 0.01-0.05wt% of the water; adding sodium hydrogen sulfite and borax into the treating pond, uniformly stirring the obtained object, and soaking the integral-edged boards 1-2 days at 5-40 DEG C, wherein the sodium hydrogen sulfite accounts for 0.05-0.1wt% of the water and the borax accounts for 0.005-0.01wt% of the water; and finally, taking out the integral-edged boards subjected to soaking and decoloring, washing the integral-edged boards by using water, and drying the integral-edged boards. The method is simple, rich in raw materials, easy to operate, good in processing effect and energy-saving and can effectively prevent paulownia woods from discoloring, thereby improving the quality.

Description

technical field [0001] The invention relates to wood treatment, in particular to a paulownia wood decolorization treatment method, which is effectively used for the decolorization treatment of discolored wood in the processes of felling, transportation, storage, drying and mechanical processing of the paulownia wood, and improves the quality of the paulownia wood. Background technique [0002] Paulownia is one of the important fast-growing industrial timber species in my country. It has excellent material and beautiful texture. It is a good material for manufacturing wood-based panels, furniture, and architectural decorations. Because of its wide distribution and large planting quantity, it occupies an extremely important position in my country's forestry production. In recent years, most of the exported paulownia and paulownia panels have been concentrated in the border area between Henan and Shandong, and the annual foreign exchange earnings from exports have exceeded 50 m...

AI Technical Summary

Problems solved by technology

[0005] For above-mentioned situation, in order to overcome the defect of prior art, the object of the present invention is exactly to provide a kind of paulownia wood decolorization treatment method, can effectively solve the decolorization treatment of paulownia wood that takes place in the process of felling, transportation, storage, drying and mechanical processing, To meet the problem of improving the quality of paulownia wood in wood processing