http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
( Fauzi Febrianto ),( Dini Lestari ),( Adesna Fatrawana ),( Sena Maulana ),( Rita Kartikasari ),( I Nyoman Jaya Wistara ),( Deded Sarip Nawawi ),( Nam Hun Kim ) 韓國木材工學會 2017 한국목재공학회 학술발표논문집 Vol.2017 No.1
Dimensional stability and strength of bamboo oriented strand board (BOSB) were much improved when bamboo strands were steamed pre-treated prior to be mixed with adhesive. However, the treatment is still needs to be improved due to some extractives were still accumulated on the surfaces of strands. The objectives of this research were to evaluate physical, mechanical and durability properties of BOSB prepared from modified steam treatment of betung bamboo strand (Dendrocalamus asper) and chemical composition change during the treatment. Three layers of BOSB were prepared and the ratio of surface, core and back layer was set 1:1:1. The strands were steamed at closed tank at certain condition. Some strands were washed with distilled and NaOH 1% solution. Paraffin in amount of 1 % was added. A rotary drum blender was used for mixing the strands and 8% PF adhesive. The mat-form was hot-pressed at 135 ℃ for 10 min at a pressure of 2.5 MPa to fabricate BOSBs. The board was then conditioned for two weeks in a room condition. For comparison, BOSB prepared from strands preserved with 3% borax preservative was also developed. Steam treatment greatly improved dimensional stabilization i.e. water absorption (WA) and thickness swelling (TS) and mechanical properties i.e. MOE, MOR and internal bond (IB) of BOSB. Washing strands with NaOH 1% solution after steamed treatment resulted in better improvement of those parameters than washing with distilled water. BOSB resulted from the above modified steam processes also improved its durability against termite attacked. Extractives, holocellulose and lignin of bamboo reduced and pH value and alpha cellulose increased after applying steam. Durability class of BOSB obtained in this experiment was equal with using 3% borax preservative.