Influence Of Pressing Time On Physical And Mechanical Properties Of Particleboards Made From Scots Pine (Pinus sylvestris L.)

Authors : Miglena Valyova, Daniel Koynov

Pages : 78-81

Doi:10.26701/ems.532796

View : 12 | Download : 9

Publication Date : 2020-06-20

Article Type : Research

Abstract :This study presents the results of investigations on some physical and mechanical properties of one-layer particleboards made from Scots pine ( Pinus sylvestris L. ). The size and   the ratio of the using particles were: 0 . 5-1 mm - 20 %, 1-3 mm - 60 % and 3-5 mm -20 %, respectively. U rea-formaldehyde resin was used as a binder. The effect of different pressing time- 15, 30, 60 and 90 s . mm -1 on the some properties, such as: density, moisture content, w ater absorption , t hickness swelling and bending strength according to appropriate standards was evaluated. The best results were observed at pressing time of 60 and 90 s . mm -1 . The particleboards obtained under these conditions can be used in the furniture industry .
Keywords : particleboards, urea-formaldehyde resin (UF), physical properties