Effect of wood sawdust size and proportions additives on some technological properties of Sophora japonica L. produced panels

Abstract

The study was carried out between 2019-2020 in thee laboratories of the Faculty of Agricultural Engineering and laboratories of biotechnology in Damascus , pruning products Sophora japonica L. were used in the manufacture of eight models of particleboard Different  in size of sawdust wood (large , Small)  , ratio adhesive used [8 and 10%UF-resin] and ratio harder used [1and 2% (NH₄)₂SO₄], the Binding Strength and Cross-swilling properties of the manufactured models were studied in comparison with the European standard field EN , The study showed:

- Model [ large sawdust,10%UF-resin, 2% (NH₄)₂SO₄ ]  in terms of Binding Strength and Cross-swilling(24h) outperformed the European field with values of 5.25%and 8.68 %  respectively.

- The Binding Strength property are directly proportional to the increase in wood chips size and the amount of chemicals added (UF-resin, Ammonium sulphate).

- Cross-swilling 24 h property are inversely proportional to the increase in wood chips size and the amount of chemicals added (UF-resin, Ammonium sulphate).