Decolorizing treatment process for recycling bamboo material

Abstract

The invention discloses a decolorizing treatment process for recycling a bamboo material, and relates to the technical field of bamboo material decolorizing treatment. The decolorizing treatment process specifically comprises the following steps: 1) the bamboo material is preheated, then is immersed in a mixed solution containing polyvinyl alcohol, and is naturally air-dried for later use; 2) theair-dried bamboo material is put into a prepared mixed solution, and is fully infiltrated under the action of ultrasonic waves; 3) tartaric acid is added into an aqueous pyridine solution, the obtained solution is uniformly mixed, and then is heated to 80-90 DEG C, and the bamboo material is immersed into the solution, and then is washed with clear water after infiltration; and 4) ultrasonic infiltration treatment is performed on the bamboo material under ozone, and then is dried. Multistage infiltration treatment is adopted, so an efficient decolorizing effect is achieved, the attribute of the bamboo material cannot be damaged by decolorizing treatment, the reprocessing performance of the bamboo material is favorably improved, and the process has a wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of decolorization treatment of bamboo and wood materials, and in particular relates to a decolorization treatment process for recycling and reuse of bamboo and wood materials. Background technique [0002] Nowadays, in order to pursue a higher standard of living, people will replace and pursue new products, such as mobile phones, clothes, and furniture. When replacing furniture, old furniture will be placed in recycling bins, garbage dumps or waste recycling due to the space it takes up. In the center, if these waste furniture wood is not treated, it will cause a waste of resources. [0003] Therefore, the recycling and reprocessing of waste furniture can not only improve the utilization rate of resources, avoid the waste of resources, but also increase economic benefits, and it is also in line with the environmental protection concept of sustainable development advocated at this stage. Since the furniture ...

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the decolorization of bamboo and wood materials mainly uses hydrogen peroxide or hypochlorite as an oxidative decolorizing agent, and auxiliary flocculant and alkali are added to control the reaction speed, thereby realizing the decolorization of bamboo and wood materials, but the following problems exist in the prior art: 1) The decolorization efficiency is low, and the single decolorization cycle is long, which is greatly affected by the color depth of the material; 2) The added auxiliary reaction aid will accumulate more and more silicon ions in the decolorizer solution during decolorization, which will affect the decolorization speed. The number and efficiency of cycle decolorization are greatly reduced; 3) The additives used will be adsorbed in the microscopic tube pores of bamboo and wood materials. When it is necessary to recolor bamboo and wood materials, it is difficult, the coloring speed is slow, and the coloring difference between the inside and outside Large, the overall effect is not ideal

For example, Chinese patent CN2018112191402 discloses a high-efficiency decolorization treatment formula and decolorization treatment process for rubber wood. It discloses the use of hydrogen peroxide solution and citric acid solution to soak the board to decolorize the board color. The disclosed technical solution is still to use hydrogen peroxide as oxidative decolorization. The decolorization of the wood can be achieved by using a decolorization agent. The decolorization efficiency and long-term treatment will shrink or loosen the bamboo and wood material, destroying the natural properties of the material itself.