A kind of wood bleaching method

Abstract

The invention discloses a wood bleaching method, and belongs to the technical field of wood bleaching. The wood bleaching method is characterized in that sodium bicarbonate is utilized to pre-treat wood; sodium bicarbonate is decomposed at a high temperature; carbon dioxide is released for forming micro pores inside wood; lignin and X-rays are used to perform induced culture on calvatia gigantean, so that lignin decomposition capacity is improved and decomposition on cellulose is reduced; a bacterial solution is mixed with sodium silicate to obtain a mixture, and the mixture enters the wood for decomposing lignin inside; micro pores generated by decomposing lignin and pigments are filled with sodium silicate, so that looseness of wood is prevented from being increased; oxalic acid is used to bleach a wood surface; and finally, sterilization treatment is performed on the wood. According to the wood bleaching method disclosed by the invention, corrosion, on wood, of microorganisms is avoided, and the problems that an existing bleaching method is strong in corrosion, is great in damage on wood, is harmful on human body, and easily stimulates a mucosa of a respiratory tract after long-term contact are effectively solved. The wood bleaching method can effectively reduce damages on wood, is free of stimulation on the mucosa of the respiratory tract after long-term contact, and is long in lasting time after use.

Description

technical field [0001] The invention relates to a wood bleaching method and belongs to the technical field of wood bleaching. Background technique [0002] Wood is the most human-friendly natural material among the three major building materials (reinforcement, cement, and wood), and it has high usability, regeneration, and important economic value. The artificial forest grows fast, matures early, the material is relatively loose, the color of the material is uneven, the color is dull, and the discoloration and pollution of the wood during storage and processing make it widely used in furniture, papermaking, artificial fiber, flooring, etc. It is greatly restricted, thereby reducing the utilization value of wood. Therefore, the material color problem has become an urgent problem to be solved in the wood industry, paper industry and man-made fiber industry. [0003] The wood bleaching method is to use a chemical substance to eliminate the spots, mineral lines and uneven col...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention: Aiming at the disadvantages that the current bleaching method has strong corrosiveness, great damage to wood, and is harmful to the human body, long-term contact is easy to irritate the mucous membrane of the respiratory tract, and the duration of wood bleaching is short, a kind of bleaching method is provided. The wood is mixed with sodium bicarbonate solution and soaked, heated to boiling and then heat-preserved, and the wood after drying is taken out for later use, then mixed with agar, sterilized and sterilized to obtain a liquid medium, inoculated with puffballs and shaken for culture, and then filtered with gauze to obtain The filtrate is mixed with sodium silicate to obtain a treatment solution, soak the spare wood after drying in the treatment solution, then add oxalic acid, take out the wood after standing, rinse with water and dry naturally to obtain a bleached wood method. The present invention utilizes sodium bicarbonate Pretreat the wood, decompose sodium bicarbonate at high temperature, release carbon dioxide to form micropores inside the wood, then use lignin and X-rays to induce cultivation of puffballs, increase its ability to decompose lignin and reduce the decomposition of cellulose, and then Mix the bacterial liquid with sodium silicate, enter the wood through the micropores, decompose the internal lignin, and at the same time, sodium silicate fills the micropores generated by the decomposition of lignin and pigments to avoid the increase of the porosity of the wood, and then use it again Oxalic acid bleaches the wood surface, and finally sterilizes the wood to avoid the corrosion of the wood by microorganisms, which effectively solves the problem that the current bleaching method is highly corrosive, causes great damage to the wood, is harmful to the human body, and is easy to irritate the respiratory mucosa after long-term exposure. question