Timber water-tight and anti shrinkage-and-swell processing method

Abstract

The present invention provides waterproof and swelling and shrinking preventing timber treating method, and the method is treating timber with waterproof and swelling and shrinking preventing timber treating solution. The timber treating solution consists of fatty dihydric alcohol or its polymer 10-70 wt%, alkyl acrylate 5-10 wt%, alcohol 5-10 wt%, and distilled water 10-80 wt%. The treating process includes soaking timber or timber product in the timber treating solution inside a sealed treating tank under the pressure one -0.1 to 0.5 MPa, pressurizing and heating for soaking treatment, and final drying treatment. Thus treated timber sample has shrinkage resisting coefficient up to 70 % and moisture absorption resisting coefficient up to 60 %, so that the present invention can prevent deformation and cracking of timber product and raise the size stability of timber product effectively.

Description

Technical field [0001] The invention relates to a treatment method for wood, in particular to a treatment method for water resistance and shrinkage prevention of wood. Background technique [0002] As we all know, the moisture content of wood changes with the change of ambient temperature and humidity, which will cause the wood to swell and shrink, and the resulting stress changes will lead to wood deformation and cracking. In order to suppress its deformation speed and ensure that the solid wood products are stable in size and not deformed during production and use, before the wood is made into a solid wood product, the wood needs to be dried to a moisture content that is suitable for the environment in which the product is used, and then the solid wood product is produced. In the later stage, the outer surface of solid wood products is repeatedly waxed or sprayed with paint, paint and other substances to form a protective film on the outer surface to slow down the diffusio...

AI Technical Summary

Problems solved by technology

However, the current practice has not fundamentally solved the historical problem of shrinkage and deformation of solid wood products, and there are defects such as the short duration of the treatment effect and the inability to reprocess and polish the treated wood.