Durability Performance of Laboratory-made OSB and Some Wood-based Panels Subjected to Outdoor Exposure
Durability Performance of Laboratory-made OSB and Some Wood-based Panels Subjected to Outdoor Exposure
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实验室制造的定向刨花板和部分人造板户外暴露的耐久性能
DOI：
10.5990/jwpa.25.263
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发表时间：
1999
期刊：
影响因子：
--
通讯作者：
S. Kawai
中科院分区：
文献类型：
--
作者：
Shigehiko Suzuki;M. Ikeda;H. Inoue;T. Shibusawa;S. Kawai
实验室制作了全尺寸的OSB，其中包括sugi （Cryptomeria japonica D. Don）线作为表层，回收木颗粒作为芯层，并测试了四种类型的商用人造板，以评估其在户外暴露三年后的耐久性。根据JIS（日本工业标准）和JAS（日本农业标准），经过三年的仓库屋顶护套使用后，确定了面板的机械和尺寸特性。结果表明：室外暴露后的MOR和MOE保留率根据所用板材的树脂类型和表面条件的不同在30% ~ 70%之间。m型刨花板的IB强度显著降低，商用OSB和m型刨花板的厚度膨胀大于其他板材。实验制备的OSB具有较好的强度保持性；MOR、MOE和IB分别为68%、55%和77%。在实验室制造的OSB中没有发现由于使用屋顶护套而导致的强度降低。其他面板的强度降低估计小于初始强度的10%。使用面板的湿弯性能与对照组的湿弯性能没有显著差异。
The laboratory made full-scale OSB, which consisted of sugi (Cryptomeria japonica D. Don) strands for the face layers and recycled wood particles for the core layer, and four types of commercial wood-based panels were tested to evaluate their durability performance after having been subjected to an outdoor exposure for three years. The mechanical and dimensional properties of the panels were determined after three-year usage as the roof sheathing of a warehouse according to the JIS (Japanese Industrial Standard) and JAS (Japanese Agricultural Standard). The results obtained were summarized as follows: The MOR and MOE retention after the outdoor exposure ranged from 30% to 70% corresponding to the resin type of the board used and the surface conditions. The IB strength for M-type particleboard decreased remarkably, and the thickness swellings of the commercial OSB and M-type particleboard were larger than those of the other panels. The laboratory-made OSB showed fairly good strength retentions; 68%, 55%, and 77% for MOR, MOE, and IB, respectively. No strength reduction caused by the usage of the roof sheathing was found in the laboratory-made OSB. The strength reduction of the other panels could be estimated less than 10% of the initial strength. There was no significant difference between the wet-bending properties of the used panel and those of the controls.