first experiments on the heat-treated wood have been carried out in the 30-ies of the last century in Germany.
Over time, this issue became interested in other countries.It was found that treatment of wood using high (180 ° C) temperature change its structure, and it leads to improvement of useful properties and characteristics.
example, are destroyed by this treatment polysaccharides contained in the tree, preventing the formation of mold and mildew.
There are three types of heat treatment of wood:
1.Obrabotka at temperatures above 180 ° C.This improves the properties of the decorative wood.
2. Processing at a temperature above 210 ° C.Several times increased resistance to rot.
3. Processing at temperatures above 230 ° C.Very high resistance to decay, durability, stability to dimensions (not swell and does not dry out).
Thermowood, having a
Some positive characteristics of thermo mentioned above.If we summarize them, the list would look something like this:
- geometric stability (resists swelling and shrinkage);
- absence of internal stresses;
- reduced compared to untreated wood thermal conductivity;
- reduced as compared with untreated wood density and specific gravity;
- environmental friendliness;
- aesthetic appearance;
- fire resistance.
- peculiar smell;
- -exposure to ultraviolet radiation;
- fairly high cost.
Overall, thermowood - an excellent building material that can be used, depending on the characteristics of the processing, the same in all areas of construction and decoration as normal wood.