Processing method for enhancing wood cell-wall strength

Abstract

The invention relates to a processing method for enhancing wood cell-wall strength, in particular to a processing method for wood modification aiming at wood cell walls. The processing method comprises the steps in sequence: preparing and detecting dipping treatment fluid; sucking-in in vacuum; pressurizing and dipping; sucking out at negative pressure and returning the treatment fluid in the a pressure dipping tank to a solution storage tank; carrying out secondary vacuumizing treatment and then taking out wet materials subjected to dipping treatment; ageing; drying by grades; and finally taking out the intensified modified wood. Accordingly, upgrading and modifying are unnecessary to carry out on the traditional equipment so that the equipment cost is greatly saved; and the processed soft wood has the advantages of obviously enhanced strength, good dimensional stability, uniform performance and enlarged solid-wood utilization range.

Description

technical field [0001] The invention relates to a treatment method for increasing the strength of wood cell walls, specifically a wood modification treatment method for wood cell walls. Background technique [0002] At present, the output value of China's furniture and flooring industry ranks first in the world, and the high-end furniture and flooring industry mainly uses solid wood as raw materials, and these raw materials are mostly wood with high strength and good dimensional stability. As people's demand for solid wood increases, the availability of high-strength wood for consumption is gradually decreasing. In recent years, the timber resources supplied by our country are mainly plantation timbers. The materials of these timbers are poor, their strength is low, and their strengths vary greatly, so it is difficult to directly use them for solid wood processing. For this reason, the methods of moist heat pressurization shaping treatment and impregnation treatment are wid...

AI Technical Summary

Problems solved by technology

[0005] First of all, although the process has been carried out in the vacuum stage, vacuuming the wood in the treatment tank can only extract part of the air in the wood, and cannot make the treatment liquid enter the wood more under the action of negative pressure. The treatment liquid that has entered the wood during the vacuum relief process recoils

[0006] Secondly, after pressure treatment and pressure relief, the wet material is taken out directly. At this time, there is a large amount of excess treatment liquid on the surface of the wet material, which is easy to cause waste of treatment liquid and environmental pollution.

[0007] Furthermore, the treatment process does not go through the curing stage, and the wet wood is directly dried, which also hinders the treatment solution entering the wood cell cavity from further diffusing into the wood tissue under the action of the water content gradient, so that more treatment solution is filled. In the cell lumen of wood, cannot chemically bond with the cell wall

[0008] In summary, the existing strengthening measures and methods for solid wood, whether it is the wet heat pressurization method or the organic resin impregnation method, have problems such as high requirements for preparation equipment, complex processes, expensive raw materials, and unstable product performance.