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首页> 外文期刊>Journal of pulp and paper science >Assessing the Influence of Time-since-Death: Pilot Scale Kraft and Thermomechanical Pulping of Beetle-Killed Lodgepole Pine
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Assessing the Influence of Time-since-Death: Pilot Scale Kraft and Thermomechanical Pulping of Beetle-Killed Lodgepole Pine

机译：评估自死亡以来的影响：甲虫杀死的小松树的中试牛皮纸和热机械制浆

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摘要

Pilot plant kraft and mechanical pulping trials were carried out for a well-controlled sample set to determine the influence of time-since-death of mountain pine beetle (MPB)-killed lodgepole pine on pulping and pulp quality. Wood and fibre quality showed little measurable influence from time-since-death other than a significant drop in moisture. Kraft pulping and pulp quality was also independent of time-since-death, although some influence on kink index was seen. For TMP pulp, MPB-killed wood showed lower sheet density and higher sheet roughness when compared to unattacked wood. Preliminary calendering and linting tests also resulted in some differences, suggesting that runnability and printing quality of TMP paper may be affected. The results of this study suggest that from a fibre perspective, MPB-killed wood is an acceptable source of fibre for kraft pulping even at grey and late grey stages. For TMP, some effect on sheet structure and surface structure may exist.
机译：为控制良好的样品组进行了中试牛皮纸制浆和机械制浆试验，以确定山松甲虫（MPB）杀死的黑松的死后时间对制浆和纸浆质量的影响。自死亡以来，木材和纤维质量几乎没有可测量的影响，除了水分明显下降。牛皮纸制浆和纸浆质量也与死后时间无关，尽管对扭结指数有一定影响。对于TMP纸浆，与未经攻击的木材相比，经MPB杀死的木材显示出较低的纸张密度和较高的纸张粗糙度。初步的压光和起绒测试也导致了一些差异，表明TMP纸的可运行性和打印质量可能会受到影响。这项研究的结果表明，从纤维的角度看，杀死MPB的木材是牛皮纸制浆的可接受纤维来源，即使在灰色和灰色后期也是如此。对于TMP，可能存在对板材结构和表面结构的影响。

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