Effects of resin content and precompression treatment on bulk bamboo extrusion
Effects of resin content and precompression treatment on bulk bamboo extrusion
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树脂含量和预压缩处理对块材挤压的影响
DOI：
10.1007/s12289-019-01497-0
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发表时间：
2019
影响因子：
2.4
通讯作者：
Kanayama Kozo
中科院分区：
文献类型：
--
作者：
Seki Masako;Yashima Yuko;Miki Tsunehisa;Kiryu Tomoaki;Tanaka Soichi;Kanayama Kozo
竹子作为一种自然快速生长的可再生自然资源，对解决资源枯竭和全球变暖等环境问题具有重要意义。为了提高竹材的利用率，采用酚醛树脂浸渍竹材的木流成型新工艺。研究了竹材中树脂含量和分布对竹材侧挤压成形性能的影响。此外，我们开发了一种预压缩处理方法，在树脂浸渍之前在竹材中引入裂缝，并确定了这种处理方法对竹材树脂渗透性的影响。随着pf -树脂含量的增加，挤压过程中的成形压力呈线性下降趋势，这种趋势与裂纹的存在或树脂的分布无关。因此，提高竹材的树脂含量对提高竹材的膨化性能具有重要意义。预压缩处理能有效提高酚醛树脂浸渍竹材的树脂渗透性和成型性。
The use of bamboo, as a natural fast-growing renewable natural resource, contributes to solving resource-depletion and environmental problems such as global warming. We applied a new wood-flow-forming technique to bulk bamboo impregnated with phenol formaldehyde (PF) resin in order to promote the use of bamboo. The influences of resin content and distribution in the bamboo on formability (extrudability) during lateral extrusion were investigated. Moreover, we developed a precompression treatment method during which cracks were introduced in the bamboo prior to resin impregnation, and the effects of this treatment method on the resin permeability of the bamboo were determined. The forming pressure during extrusion decreased linearly with increasing PF-resin content, and this tendency was independent of the presence of cracks or the distribution of the resin. Therefore, increasing the resin content of the bamboo is important for improving the extrudability of bulk bamboo. Precompression treatment was found to effectively improve resin permeability and the formability of bulk bamboo impregnated with PF resin.