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Publikováno ve sborníku z mezinárodní konference 2013 Impregnability of european beech false heart wood after microwave treatment. In INTERNATIONAL CONFERENCE “WOOD SCIENCE AND ENGINEERING IN THE THIRD MILLENNIUM”– ICWSE 2013. The purpose of this study was to experimentally evaluate the microwave radiation effect on weight percentage gain (WPG). The species European beech (Fagus sylvatica L.) was selected and testing samples from false heartwood with dimensions of 20×20×30mm3 were used. The microwave treatment was carried out on laboratory device at a frequency of 2.45 GHz. Afterwards the oil impregnation in transverse directions was performed. Results were compared with the reference samples (untreated). The samples exposed at 20s intervals (20s treatment, 30s relaxation and 20s treatment) shows improvement of impregnability (WPG 33.84%), which is with agreement of authors hypothesis. The WPG at 30s intervals of exposure (30s treatment, 30s relaxation and 30s treatment) decreased to 26.59%. Based on results, the future work dealing with time influence of exposure in microwave treatment is needed.
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