Combination bleach for wood flakes

Abstract

The invention provides a combined bleaching agent for wood flakes, its main components include 35wt% hydrogen peroxide solution, sodium metasilicate pentahydrate and polyethylene glycol, and the weight ratio of each component in 1000ml solution is: : 150-250g of 35wt% hydrogen peroxide solution, 30-50g sodium metasilicate pentahydrate and 10-20g polyethylene glycol; in the wood flake bleaching process of the present invention, there is a self-compensating filling design for the loss of wood component water-soluble substances, That is, sodium metasilicate pentahydrate and polyethylene glycol can beneficially fill the loss of water-soluble substances in pigments and lignin in oxidatively decomposed wood flakes, and easily form emulsions in aqueous solutions, increasing the viscosity and surface of the combined bleach solution. Tension, enhance the adsorption of wood flakes, so as to prevent the wood flakes from being loose and easy to crack and break after bleaching and drying, so that the bleached wood flakes become whiter, brighter, and the material color is uniform, and the material strength and flexibility are maintained.

Description

technical field [0001] The invention belongs to the technical field of wood bleaching, in particular to a combined bleaching agent for wood flakes. 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, wood-based panels, floors, etc. Large restrictions, thereby reducing the utilization value of wood. Therefore, the material color problem has become a problem to be solved urgently in the wood industry. [0003] The wood bleaching method is to use a chemical substance to eliminate the spots, mineral lines and uneven color of the wood caused by various pollutio...

AI Technical Summary

Problems solved by technology

[0004] In view of the strong corrosiveness of the bleaching method in the prior art, the reprocessing strength, density and flexibility of wood are greatly damaged. The bleaching method has no loss of wood components and water-soluble substances. Self-compensating filling design, the flexibility and reprocessing of wood flakes after bleaching The processing strength is poor, and it is harmful to the human body. Long-term contact is easy to irritate the respiratory tract mucous membrane. The purpose of this invention is to provide a combined bleaching agent for wood flakes. During the bleaching process, there is a self-compensating filling design for the loss of wood components and water-soluble substances.