WOOD MINERALIZATION PROCEDURE WITH ACETOACETATE SOLUTIONS FOR ESSENTIAL WOOD PROPERTIES IMPROVEMENT

Izum se nanaša na postopek mineralizacije lesa s karbonati in/ali hidroksidi za izboljšanje bistvenih lastnosti lesa, to je odziva na ogenj, njegove trajnosti ter dimenzijske stabilnosti. Mineralizacija lesa poteka v dveh fazah, in sicer se v prvi fazi les impregnira z impregnacijskim sredstvom, ki je raztopina vsaj enega kovinskega acetoacetata ali mešanice kovinskih acetoacetatov v poljubnih masnih razmerjih v topilu, pri čemer je koncentracija kovinskega acetoacetata ali mešanice kovinskih acetoacetatovv topilu do 30 odstotkov mase, in pri čemer impregnacijsko sredstvo globoko prodre v strukturo lesa. Sledi faza naknadne obdelave impregniranega lesa, kjer se z regulacijo temperature, vlage in časa izpostave impregniranega lesa tem pogojem, kovinski acetoacetat(-i) pretvori(-jo) v karbonat(-e) in/ali hidroksid(-e). Prednost predlaganega postopka mineralizacije v primerjavi z do sedaj uporabljenimi postopki je, da nastane(-jo) karbonat(-i) in/ali hidroksid(-i) šele, ko impregnacijsko sredstvo globokoprodre v strukturo lesa. The invention relates to a process of wood mineralization using carbonates and / or hydroxides to improve the essential properties of wood, i.e. fire properties, fungal resistance and mechanical properties. The wood mineralization method is a two stage process; namely in the first stage the wood is impregnated with an impregnating solution, such that it penetrates deep into the structure of the wood. The solution may contain at least one metal acetoacetate or a mixture of metal acetoacetates in any weight ratio in a solvent up to 30 wt%. Following the first stage, the impregnated wood is subject to a after-treatment phase, in which the metal acetoacetate(s) is converted into carbonate(s) and / or hydroxide(s) by regulating the temperature and humidity, and the time the impregnated wood is exposed to these conditions. The advantages of the mineralization process proposed over and above the processes used to date are that (1) carbonate(s) and / or hydroxide(s) are formed only when the impregnating solution penetrates deep into the wood's structure, (2) the process is more environmentally friendly, and (3) it is simpler.