Wood impregnated with montan wax emulsions show improved relevant properties. Treated wood is much more resistant to fungal decay. Furthermore, the equilibrium moisture content of impregnated wood is lower, which reduces the possibility of fungal infection. In addition, impregnation with wax makes wood surface considerably more hydrophobic. Experimental data presented in this excellent magazine suggests that it would be possible to use a water emulsion wax montan for wood preservation in less threatening use classes.
COBISS.SI-ID: 1793929
Different types of European hardwoods and softwoods were liquefied with glycerol/diethylene glycol. The liquefied spruce wood was used as partial substitute for melamine-formaldehyde and melamine-urea-formaldehyde resin for particleboard production. The mechanical properties of particleboards with 30% addition of LW to MF or MUF resin were compared to the properties of control board (0% LW), while in case of formaldehyde emission the values were lower for boards with 50% LW addition. The temperature of the press was lowered from 180°C to 160°C with no influence on the mechanical properties.
COBISS.SI-ID: 4298522
We investigated wood from various constructions and artefacts of prehistoric pile dwellings on Ljubljansko barje, settled from ca. 3600 to 3332 and from 3160 to 3071 cal BC and dated them with an accuracy ±10 years. We defined the time when the region was settled and when it was presumably not occupied. The results helped us to evaluate the prehistoric economy, wood use, interconnections of occupants from the Ljubljansko barje with people from other remote sites and their possible role in cultural development of the wider area.
COBISS.SI-ID: 31389741
The modified properties of wood after heat treatment can affect the bonding process with adhesives. The results showed that the shear strength of the phenol-formaldehyde (PF) adhesive bond was influenced by the heat treatment of the spruce wood at 180 and 220 °C. The observed reduction in the shear strength of the PF adhesive bond was ascribed to a decrease in the wood strength itself, caused by the heat treatment. The changes in wettability and adhesive penetration did not influence the bonding process of the HT wood with the PF.
COBISS.SI-ID: 1819529
Unrestrained boards were kiln dried using a selected drying schedule. The earlier appearance of twist, with regard to MC and drying time, was confirmed in the case of boards sawn from the central part of logs. The final twist amounted to between 10 and 20°/m in the case of boards close to the pith, and decreased to less than 4°/m in the case of boards sawn at a radius of 70 mm from the centre of the logs. Ring curvature had the highest impact on the final twist of the dried boards, followed by grain angle and tangential shrinkage.
COBISS.SI-ID: 1794185