摘要
采用一种新型木材改性处理剂 ,分别以改性异氰酸酯浓度 5 %、10 %、15 %、2 0 % ,对美国人工林火炬松 (Pinus taeda)进行表面密实化处理。结果表明 ,随着树脂浓度的增加 ,无论是冷水浸泡还是煮沸 ,木材的吸水厚度膨胀率和压缩变形恢复率明显降低。表面密实化后 ,火炬松处理材的 MOR和 MOE值分别比素材提高 4 3.9%和 30 .1% ;水浸 2 4 h和煮沸 2 h后的湿状抗弯性能比素材略低 ,干状抗弯性能明显比素材高 ,MOR分别高 2 8.0 %和 2 5 .76 % ;MOE分别高 2 2 .5 5 %和 2 7.79%。改性异氰酸酯浸渍处理后的表面密实化木材 ,具有一定的阻燃效果 ;
The plantation wood of Pinus taeda was compressed on the surface with a new improved treatment technology. Results showed that with the increase of modified methane diisocyanate concentration, the increase of weight percent gain ( WPG ) and the decrease of thickness swelling and compressive deformation recovery efficiency were remarkably. The modulus of rupture (MOR) and modulus of elasticity (MOE) properties of surface compressive wood were increasedby 43.9% and 30.1% compared with the control specimen respectively. Surface compressed wood had much improved fire retardant effect, abrasion resistance and surface hardness.
出处
《木材工业》
2002年第1期20-22,28,共4页
China Wood Industry
