This study was conducted to investigate the uptake of castor oil (CAO) in some wood specimens and the effect of CAO on the leaching ability, dimensional stability and fungal-decay resistance of the wood specimens. CAO was infused into the specimens using a pressure treatment. Uptakes of CAO penetrated in yellow poplar (YEP), Japanese cedar (JAC) and Douglas fir (DOF) blocks were higher than 100 %. The leaching ability of the CAO-based suspensions against saline water was the lowest in YEP, followed by Japanese larch (LAR), JAC and DOF. The retention values were 90 % or higher in most of the specimens. Radial and tangential swellings of CAO-treated strips submerged in saline water for 2 weeks were restrained compared to control specimens. No significant differences were found between bending strength and Janka hardness of CAO-treated and control strips. CAO treatment provided acceptable decay resistance to most wood specimens against Fomitopsis palustris and Trametes versicolor. Retention of CAO in the leached strips were identified through X-ray microscopic observation. Based on the results, CAO was determined to be an effective agent for improving the dimensional stability of wood. These results demonstrate the great potential of CAO as an environmentally friendly wood preservative and dimensional stabilizer, allowing CAO-permeated wood as raw materials for both indoor and outdoor use.

中文翻译：

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采用压力处理的蓖麻油浸渍木材的耐腐烂性和尺寸稳定性

本研究旨在调查一些木材样本中蓖麻油（CAO）的吸收情况以及CAO对木材样本的浸出能力、尺寸稳定性和抗真菌腐烂性的影响。通过压力处理将 CAO 注入样本中。黄杨 (YEP)、日本雪松 (JAC) 和花旗松 (DOF) 块中渗透的 CAO 吸收率均高于 100%。YEP 中基于 CAO 的悬浮液对盐水的浸出能力最低，其次是日本落叶松 (LAR)、JAC 和 DOF。大多数样本的保留值为 90% 或更高。与对照样本相比，在盐水中浸没 2 周的经 CAO 处理的条带的径向和切向膨胀得到抑制。经过 CAO 处理的带材和对照带材的弯曲强度和 Janka 硬度之间没有发现显着差异。CAO 处理为大多数木材样本提供了可接受的耐腐性沼泽福米托水母和花斑栓菌。通过 X 射线显微镜观察确定浸出条中残留的 CAO。根据结果​​，CAO 被确定为提高木材尺寸稳定性的有效剂。这些结果证明了CAO作为环保木材防腐剂和尺寸稳定剂的巨大潜力，使CAO渗透的木材可以作为室内和室外使用的原材料。