The impact of adhesive type and its share on swelling stress and thickness swelling of particleboards was researched. To make particleboards particles from Otiški Vrh Particleboard Factory were glued with urea-formaldehyde or melamine-formaldehyde resin. Particleboards were made in laboratory conditions with 6.00 % - 9.00 % share of glue in the core layer, and 10.00 % - 13.00 % in the surface layer. During the compression the temperature change was measured in the middle of the particleboard, intersection core and surface layer, and in intersection between surface layer and heating plate. Thickness swelling was determined with 24 hour water immersion test. Swelling stresses were measured for 24 hours. It was determined that particleboards glued with MF resin had lower thickness swelling than those glued with UF resin. Particleboards glued with MF resin had a lower swelling stress. It was also determined that by reducing the thickness swelling the swelling stress reduces too. Using UF resin we achieved bigger changes of swelling stress by changing the share of glue in core layer. Swelling stress and thickness swelling increase faster in 1st. phase when exposed to water.
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