以速生杨木为木材原料，酚醛树脂(PF)和异氰酸酯树脂(MDI)为胶黏剂，硼酸锌(ZB)为防腐剂，制备了杨木定向刨花板(OSB)，以研究ZB添加量（0.5%、1.0%和3.0%）对OSB试板的物理力学性能和防腐性能的影响。结果表明，各试板的物理力学性能均满足我国LY/T 1580—2000《定向刨花板》中OSB/3类板的要求；添加ZB显著提高了试板的防腐性能。添加0.5%的ZB对PF、MDI两种胶黏剂胶合的杨木OSB性能无不利影响。ZB添加量在0.5%~3.0%范围内，MDI胶杨木OSB的力学性能基本随ZB添加量的增加而下降。相同ZB添加量及施胶量的情况下，MDI胶杨木OSB的力学性能优于PF胶杨木OSB。
Abstract
This study investigated the effects of zinc borate (ZB) on the physical, mechanical and decay-resistant properties of poplar oriented strandboard (OSB) panels bonded with phenolformaldehyde (PF) and diphenylmethane diisocyanate (MDI) resins. ZB was added at three loading levels, being 0.5%, 1.0 % and 3.0%, onto the dried strands during blending. The results indicated that physical and mechanical properties of poplar OSB panels containing ZB met the requirements for OSB/3 according to China standard LY/T 1580—2000, and decay resistantance of those panels was highly improved compared with the control panels. Addition of 0.5% ZB did not have detrimental effects on the physical and mechanical properties of OSB panels bonded with PF and MDI resins. Mechanical properties of OSB panels bonded with MDI decreased with the increase of the ZB loading level from 0.5% to 3.0%. At the same loading level of ZB and resin content, panels bonded with MDI had better mechanical properties than those bonded with PF resin.
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基金
收稿日期：2009-03-02修回日期：2009-05-05基金项目：江苏省2006年高校自然科学研究指导性计划项目(06KJD220082)；南京林业大学“十五”人才工程项目；江苏省2006年“青蓝工程”资助项目作者简介：金菊婉(1971—)，副教授，博士，研究方向为木质复合材料。Email: juwanjin@yahoo.com.cn。引文格式：金菊婉,董诗文,李燕民,等. 硼酸锌防腐处理对杨木定向刨花板性能的影响[J]. 南京林业大学学报:自然科学版,2009,33(5):81-85.
