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首页> 外文会议>International Conference on Advances in Building Technology Vol.1, Dec 4-6, 2002, Hong Kong, China >MECHANICAL, PHYSICAL, AND BIOLOGICAL PROPERTIES OF BORATE-MODIFIED ORIENTED STRANDBOARD
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MECHANICAL, PHYSICAL, AND BIOLOGICAL PROPERTIES OF BORATE-MODIFIED ORIENTED STRANDBOARD

机译：硼酸盐改性定向硬质合金板的力学，物理和生物学特性

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摘要

Borate-modified oriented strandboard (OSB) was manufactured using zinc and calcium borate to provide resistance to Formosan Subterranean Termites (FSTs). Mechanical, physical, and biological properties of the product were evaluated. It was shown that static bending properties of the OSB were affected little at the room condition by the added borate. The internal bond strength was, however, generally smaller at the higher borate loading levels. Thickness swelling (TS) under the 24-hour water soaking increased with increased borate content, especially for calcium borate. Part of the borate leached out under the water soaking condition due to the glueline washing and decomposition of the borate to form less water-soluble boric acid. The use of borate with a smaller particle size helped reduce TS and leaching rate significantly. Laboratory no-choice termite tests indicated that both zinc and calcium borate modified OSB resisted FSTs well. Thus, termite resistant OSB with required mechanical and physical performance could be successfully developed using southern wood species. This technology will allow more 'OSB producers to manufacture chemically modified OSB to meet increasing market demands.
机译：硼酸改性定向刨花板（OSB）使用硼酸锌和硼酸钙制造，以提供对台湾白蚁（FST）的抵抗力。评估了产品的机械，物理和生物学特性。结果表明，添加的硼酸盐在室温下几乎不影响OSB的静态弯曲性能。然而，在较高的硼酸盐负载水平下，内部粘结强度通常较小。硼酸含量增加，尤其是硼酸钙，在24小时的水浸泡下的厚度溶胀（TS）增加。由于胶水线的洗涤和硼酸盐的分解而形成的水溶性较低的硼酸，一部分硼酸盐在浸水条件下浸出。使用较小粒径的硼酸盐有助于显着降低总有机硅和浸出率。实验室无选择白蚁测试表明，锌和硼酸钙修饰的OSB均能很好地抵抗FST。因此，可以使用南方木材物种成功开发具有所需机械和物理性能的抗白蚁OSB。这项技术将使更多的OSB生产商能够生产化学改性的OSB，以满足不断增长的市场需求。

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