Bamboo Scrimber, as a green and environmentally friendly biomass material, offers advantages such as high resource utilization, high strength, and high added value to products. However, the traditional preparation method for bamboo scrimber(T-BS), which utilizes the traditional cage impregnation method, results in uneven Phenol-Formaldehyde(PF) resin distribution to the oriented bamboo fiber mats(OBFMs). This unevenness can lead to defects such as cracking and deformation in bamboo scrimber products during application. This study employs roller-pressing impregnation technology to prepare bamboo scrimber(R-BS) and investigates the mechanisms by which this process affects the physical properties of bamboo scrimber. By observing the surface morphology, microstructure, resin distribution of OBFMs and surface chemical composition, surface wettability, water resistance, and mechanical properties of bamboo scrimber, the mechanism of the effect of the roller impregnation method on bamboo scrimber is revealed. The results show that, compared to traditional methods, roller-pressing impregnation technology enhances the uniformity of resin distribution and penetration depth within the OBFMs, thereby effectively improving the surface properties of bamboo scrimber. Additionally, this method reduces the average pore size on the surface of bamboo scrimber by 14.87 %, increases the contact angle by 30.92 %, and decreases the water absorption rate (WAR) and thickness swelling rate (TSR) by 13.76 % and 17.67 %, respectively. Furthermore, it enhances MOR by 8.69 % and hardness by 10.33 %. This study offers a reference for optimizing the preparation process of bamboo scrimber and the continuous production of the OBFMs impregnation process.

中文翻译：

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辊压浸渍法制备竹材松布物理力学性能增强机理


竹皂布作为一种绿色环保的生物质材料，具有资源利用率高、强度高、产品附加值高等优点。然而，传统的竹纤维毡 （T-BS） 制备方法采用传统的笼浸渍方法，导致酚醛 （PF） 树脂在定向竹纤维毡 （OBFMs） 上的分布不均匀。这种不平整会导致竹布产品在应用过程中出现开裂和变形等缺陷。本研究采用辊压浸渍技术制备竹皂布（R-BS），并探讨了该过程影响竹皂布物理性能的机制。通过观察 OBFMs 的表面形貌、微观结构、树脂分布以及竹材布的表面化学成分、表面润湿性、耐水性和力学性能，揭示了辊浸法对竹布的影响机制。结果表明，与传统方法相比，辊压浸渍技术增强了 OBFMs 内树脂分布和渗透深度的均匀性，从而有效改善了竹材布的表面性能。此外，该方法将竹布表面的平均孔径减小了 14.87 %，接触角增加了 30.92 %，吸水率 （WAR） 和厚度膨胀率 （TSR） 分别降低了 13.76 % 和 17.67 %。此外，它还将 MOR 提高了 8.69 %，硬度提高了 10.33 %。本研究为优化竹材浸渍工艺和OBFMs浸渍工艺的连续生产提供参考。