Wood-treatment method comprising in situ polymerisation under electromagnetic radiation

Abstract

The invention relates to a wood-treatment method comprising in situ polymerisation under electromagnetic radiation. The inventive method comprises the following steps, namely: a first step consisting in impregnating a piece of wood with organic monomers that are selected from among (A) drying oils and / or (B) at least one first reactant comprising at least two glycidyl functions and at least one second reactant comprising at least two primary amine or secondary amine -NH functions, the average functionality of all of the first and second reactants being strictly greater than 2; and a second step consisting in exposing the wood thus impregnated to electromagnetic radiation having a wavelength (lambda) of between 1 to 10<-3> metres over a total time of between 5 to 40 seconds and with a power of between 300 and 1000 Watts. The invention also relates to a piece which is made from wood / resin composite material and which can be produced using the above method and to the use of one such piece for the production of all or part of wind instruments, particularly clarinets, for marquetry, for joinery and for the construction of buildings and, in particular, roof frames.

Description

technical field [0001] The invention relates to a process for the treatment of wood by impregnation and in situ polymerization of monomers under electromagnetic radiation. Background technique [0002] Artisans and industrialists have always sought hardwood species such as oak, ebony, boxwood and mahogany because of their excellent mechanical properties, especially high impact resistance, ability to support huge loads, low deformation over long periods of time, Or even excellent acoustic properties. Currently, these hardwood species are often slow-growing, making it difficult to meet the needs of the industries and artisans who process the wood. [0003] Certain species have even become so rare that it has proven necessary to protect them and limit their logging. As a result, ebony and exotic woods, which have been used for centuries to make furniture, decorative objects and musical instruments, are currently under the threat of a ban on logging and export, and may not be ...

AI Technical Summary

Problems solved by technology

But this method of wood treatment, especially when it is applied to the manufacture of musical instruments, has the major disadvantage of the presence of odorous residual monomers, which represent a certain health hazard