Wood modifier and preparation method thereof

Abstract

The invention discloses a wood modifier and a preparation method thereof, and relates to the technical field of wood chemical modification. The wood modifier disclosed by the invention is prepared from the following raw materials in parts by weight: 5-10 parts of a triazole compound, 10-20 parts of hydroxyethyl methacrylate, 0.5-0.8 part of a catalyst, 10-20 parts of ammonium dihydrogen phosphate,20-40 parts of a nonionic surfactant, 45-90 parts of polyethylene glycol and 300-800 parts of water. The invention further discloses a preparation method of the wood modifier. The wood modifier provided by the invention can stabilize the size of wood treated by the modifier, has excellent hardness, bending strength, impact toughness and loss resistance, also has waterproofness and flame retardance, and prolongs the service life of the modified wood. The raw materials of the modifier are non-toxic and environment-friendly and are pollution-free to human bodies and the environment, and the application range of modified wood is widened.

Description

technical field [0001] The invention belongs to the technical field of wood chemical modification, in particular to a wood modifier and a preparation method thereof. Background technique [0002] With the rapid development of industry, the pollution has become more and more serious. Countries have successively introduced policies to limit deforestation, so that the cost of timber imports is increasing. For this reason, my country has begun to plant a large number of artificial fast-growing forests such as poplar, fir, and rubber trees. . Although the artificial fast-growing forest has a shorter growth period, compared with the natural forest, the density, physical and mechanical strength and dimensional stability of the fast-growing forest are relatively poor, which limits its application in the field of high value-added wood processing. How to expand the application range of artificial fast-growing trees and increase their hardness and strength by physical or chemical means...

AI Technical Summary

Problems solved by technology

In the prior art, there is also the use of nanoparticles (SiO 2 、TiO 2 、Al 2 o 3 , ZnO, etc.) directly or after surface modification, directly spray on the wood surface or prepare a coating with polymer modification, and then surface-coat or impregnate into the wood to endow the wood with super-hydrophobic self-cleaning properties, but the nanoparticles are in the polymerization Uneven dispersion in the material, resulting in poor superhydrophobic effect of the wood, and no bactericidal, anti-mildew and weather resistance properties

The surface modification of fluoropolymer or fluorosiloxane can effectively solve the above-mentioned remaining problems of weather resistance and superhydrophobic self-cleaning, but the solvent required for the coating is an oil-soluble chemical substance, which has the problem of large VOC release and environmental pollution.

[0005] In the prior art, wood modifiers either have high toxicity, special odor, poor anti-loss ability, large VOC release to pollute the environment, complex operation process, high cost, or poor in-situ dispersion of nanoparticles, resulting in poor superhydrophobic effect. , or can improve the single waterproof performance of wood, but when multiple reagents are compounded, they often affect the interaction between each other, and increase the steps and costs of wood treatment. Multifunctional (high strength, waterproof, flame retardant, etc.) composite wood modification reagents have become an inevitable trend

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