Strong, durable, and aging-resistant bamboo composites were prepared by silver electrochemical and high-voltage electrostatic field (HVEF) treatments. Surface morphology, chemistry, and wettability were investigated after the treatments. Changes of rheological and curing characteristics of resin were determined. After preparation, the aging resistance and mechanical properties of bamboo composites were tested. The results showed that under the HVEF treatment, silver interacted with hemicellulose and lignin of bamboo and nanosized silver particles distributed evenly on the surface of bamboo. On the other hand, nanosilver particles directly interacted with the molecular chain of the resin by strong physical/chemical forces. According to the chemical and rheological results, the cross-linking degree of phenolic resin was proved to be increased by the catalysis of silver. An increment of density along the bonding line as well as mechanical properties of the composites was found. These findings prove that silver electrochemical and HVEF treatments are effective to regulate the structures and properties of bamboo composites and may also be relevant to the development of new bamboo engineering composites.

中文翻译：

---

银原位浸渍制得的坚固，耐用且耐老化的竹复合材料

通过银电化学和高压静电场（HVEF）处理，制备了坚固，耐用且耐老化的竹复合材料。处理后，研究了表面形态，化学性质和润湿性。确定了树脂的流变和固化特性的变化。制备后，测试了竹复合材料的耐老化性和机械性能。结果表明，在HVEF处理下，银与竹的半纤维素和木质素发生相互作用，纳米银颗粒均匀分布在竹的表面。另一方面，纳米银颗粒通过强大的物理/化学力直接与树脂的分子链相互作用。根据化学和流变学结果，银的催化作用可以提高酚醛树脂的交联度。发现沿着粘合线的密度增加以及复合材料的机械性能。这些发现证明，银电化学和HVEF处理可有效调节竹复合材料的结构和性能，也可能与新型竹工程复合材料的开发有关。