玄武岩纤维落叶松集成材胶合工艺

Bonding Technology of Larch Glulam Reinforced by Basalt Fiber Reinforced Polymer

中国木结构建筑工业的复苏面临很大的压力,其中一个重要难题就是中国缺乏天然优质大径级木材资源。如何利用中国现有劣质材资源,通过一定的技术手段对其进行改进是当前工作的重中之重。本文对聚氨酯胶黏剂制造落叶松集成材/玄武岩纤维增强树脂(BFRP)的胶合工艺技术进行了研究。试验采用竹材作为木材和BFRP的过渡层,同时引入硅烷偶联剂KH550对竹材进行处理,并在偶联剂HMR对竹材和BFRP的处理工艺上进行了进一步的完善。结果表明,径向横拼竹板材两面材性相同,同时成功避免竹节对胶合性能的影响,因此径向横拼竹板材与BFRP和木材的胶合性能最佳;硅烷偶联剂KH550对竹材处理工艺的引入,极大地增强了竹-BFRP的胶合性能。

Wood structure is the main form of the traditional Chinese architecture. As is known, many magnificent palaces, such as temples, and kiosks, are all wood constructions, which represent the essence of ancient Chinese architecture and the wisdom of Chinese civilization. However, in modern times, the recovery of Chinese wood-frame construction industry is under a lot of pressure. A critical problem is lack of large-diameter high-grade natural wood resources, therefore, how to use existing low-quality material resources and how to find a certain technical means to enhance them are the most important tasks. The study on continuous basalt fiber reinforced structural timber has been conducted for the last several years. A large number of experiments shows that the bonding performance of wood and BFRP is poor. Because both sides of bamboo plate material is different, the bamboo plates could be used to the transition layer between wood and BFRP. The bonding technology of Chinese larch glulam/BFRP with Polyurethane adhesive is focused on. Based on the glue process of the previous studies, the treatment process that bamboo or BFRP had been treated by Silane coupling agent KH550 is added in the experiments. The results show that because of the treatment of silane coupling agent KH550, the bonding performance of bamboo-BFRP has made a great progress regardless of the delamination rate or the shear strength.