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首页> 外文会议>49th International wood composites symposium >11. Internal bond strength variability due to surging during blending in a rotary drum blender
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11. Internal bond strength variability due to surging during blending in a rotary drum blender

机译：11.由于在转鼓式搅拌机中搅拌时的喘振而导致的内部粘结强度变化

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摘要

Efficiently coating the surface of strands inside a Rotary Drum Blender (RDB) is the key to obtaining good Oriented Strand Board (OSB) properties. Surging, an unwanted strand motion, is caused by strands nesting and accumulating on the atomizer boom. These strands eventually slough off and fall to the drum bottom. While on the boom, stands cannot be coated with resin. It is our hypothesis that surging decreases board performances and further, that boom shape can be modified to minimize nesting.rnResults from boards made from strands coated with resin under the best blending conditions, i.e., no surging, and the worst, i.e., chronic surging, are compared. Interestingly, surging decreased dramatically when the boom shape switched from circular to triangular. These results indicate that surging increases the variability of internal bond strength in boards. With a better understanding of strand motion and the effect of boom shape, OSB manufacturers should be able to improve product performance and lower production costs.
机译：在转鼓式搅拌机（RDB）内有效地涂覆股线表面是获得良好的定向股板（OSB）性能的关键。股线不希望有的股线运动是由股线套叠并堆积在雾化器吊杆上引起的。这些股线最终脱落并掉落到鼓底。在动臂上时，支架不能用树脂涂层。我们的假设是，浪涌会降低木板的性能，进而会改变吊杆的形状，以最大程度地减少嵌套。 ，进行比较。有趣的是，当吊杆形状从圆形变为三角形时，喘振急剧下降。这些结果表明，浪涌增加了板内部粘合强度的可变性。通过更好地了解钢绞线运动和动臂形状的影响，OSB制造商应该能够改善产品性能并降低生产成本。

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