FIELD: woodworking industry.
SUBSTANCE: group of inventions relates to wood modification. To obtain modified wood, wood is treated with wood resin having moisture content of at least 10 %, where the resin solution contains phenol-formaldehyde, urea-formaldehyde resin, melamine resin, lignin, tannin or a mixture thereof. Then, a thermal modification stage is carried out, where the wood is heated at temperature of 160 to 230 °C at atmospheric pressure or at temperature of 120 to 230 °C at pressure above atmospheric pressure.
EFFECT: higher hardness of surface and biological stability of wood material.
8 cl
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| ARTIFICIAL WOOD MATERIALS AND PRODUCTION METHODS | 2016 |
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RU2724496C2 |
| METHOD OF MANUFACTURING PRODUCT FROM DENSE WOOD | 2020 |
|
RU2811112C1 |
