Decoloring agent for decoloring bamboo or wood and method for decoloring bamboo or wood

Abstract

The invention relates to a toner and a toning method of bamboo or wood, in particular to a decoloring agent for decoloring bamboo or wood and a method for decoloring bamboo or wood. The decoloring agent comprises the following components in parts by weight: 3-10 parts of oxydol of which the weight concentration is 30-50%, 0.25-1 part of water glass, 0.1-1 part of non-ionic surface active agent and 0.25-0.5 part of alkaline pH-value regulator. The invention also provides a decoloring method by using the decoloring agent. The decoloring agent and the decoloring method in the invention not only can decolor the surface of a single plate or bamboo sheet, but also can completely decolor the single plate or bamboo sheet, i.e. the surface of the single plate or bamboo sheet and blue stains, mouldy stains, insect stains, black spots and the like at the center can be decolored; the invention has the advantages of uniform decoloring, high decoloring efficiency and low cost, and is suitable for mass cyclic production; the decoloring agent and the decoloring method have low destroy degree on wood and are especially suitable for use after the reprocessing or retoning after recombined decorativematerials are processed in a single plate or bamboo sheet decoloring way.

Description

technical field [0001] The invention relates to a toner and a toning method for bamboo and wood materials, in particular to a decolorizing agent for decolorizing bamboo or wood and a method for decolorizing bamboo or wood. Background technique [0002] In the prior art, bamboo and wood decolorizing agents and decolorizing methods mainly use hydrogen peroxide or hypochlorite as oxidative decolorizing agents, and auxiliary flocculant and alkali are added to control the reaction speed, and the following problems exist: [0003] (1) The decolorization efficiency is low, the single decolorization cycle is long, and it is greatly affected by the color depth of the material; [0004] (2) It is difficult to decolorize deep blue stains, mildew, insect stains, black spots, etc. If treated at a high concentration for a long time, the bamboo and wood materials will shrink or become loose, destroying the natural properties of the material itself, affecting the material and reducing util...

AI Technical Summary

Problems solved by technology

[0003] (1) The decolorization efficiency is low, the single decolorization cycle is long, and it is greatly affected by the color depth of the material;

[0004] (2) It is difficult to decolorize deep blue stains, mildew, insect stains, black spots, etc. If treated at a high concentration for a long time, the bamboo and wood materials will shrink or become loose, destroying the natural properties of the material itself, affecting the material and reducing utilization rate;

[0005] (3), the auxiliary reaction auxiliary agent added by the prior art method will accumulate more and more silicon ions etc. in the decolorizing agent solution during cyclic decolorization, affect the decolorization speed, and greatly reduce the number of times and efficiency of cyclic decolorization;

[0006] (4) The additive sediment used in the prior art will be adsorbed in the microscopic tube holes of the bamboo wood material. When the bamboo wood needs to be recolored, the coloring is difficult, the coloring speed is slow, and the coloring difference between the inside and outside of the veneer is large. The overall effect is not ideal