Combined bleaching agent for timber

Abstract

The invention provides a combined bleaching agent for timber. The combined bleaching agent comprises the following main components in weight ratio per 1000 ml of solution : 15-75 g of sodium percarbonate; 5-30 g of sodium perborate; 2-8 g of sodium thiosulfate and 12-50 g of sodium sulfate. The combined bleaching agent provided by the invention has higher use security and good bleaching performance; with the adoption of the bleaching agent, dark spots, mineral lines, blue stain and the like on the timber surface and the phenomena that the timber color is uneven caused by various pollutions can be eliminated, and the color difference of heartwood can be eliminated; the overall timber color can be diluted, so that the timber surface can become white and bright and uniform in color and luster; and moreover, the original timber texture and quality can be maintained, particularly the blue-green heartwood of North American liriodendron wood can be repaired better; the bleached timber is in light yellow color, which is very attractive. The processing method further can be used for reducing the white degree reducing trend caused by phototropy, so that the light resistance performance of the timber surface can become more ideal.

Description

technical field [0001] The invention relates to a wood bleaching agent, in particular to a combined wood bleaching agent. Background technique [0002] With the continuous improvement of living standards, people are increasingly seeking to return to the natural "green" living environment. Therefore, wood, as a natural material, is more widely used in construction, decoration and furniture industry. However, as far as global resources are concerned, there is a shortage of large-diameter high-quality wood and natural precious wood resources, and the number of high-quality wood with beautiful surfaces is decreasing, replaced by a large number of secondary forest and plantation wood, most of which are not bright enough Uniform, pure, dark material color, coupled with the discoloration and pollution of wood during storage and processing, greatly restricts its application in furniture and decoration. This forces us to explore the treatment of the original or uneven color of the ...

AI Technical Summary

Problems solved by technology

[0004] Traditional wood bleaching generally uses methods such as chlorination, hydrogen peroxide bleaching, hydrogen peroxide + ammonia water, etc., but these methods often have adverse effects on the health of operators or pollute the environment. Phenomena such as black spots, mineral lines and blue stains are difficult to eliminate. After treatment, the color of the material is dull and affects the appearance, so it is gradually eliminated