文献类型：期刊文献

英文题名：Super-strong biomimetic bulk bamboo-based composites by a neural network interfacial design strategy

作者：Hu, Juan[1,2] Wu, Jieyu[1] Huang, Yuxiang[1] He, Yingqi[1] Lin, Jian[2] Zhang, Yamei[1] Zhang, Yahui[1] Yu, Yanglun[1] Yu, Wenji[1]

第一作者：Hu, Juan

通信作者：Huang, YX[1];Yu, WJ[1];Lin, J[2]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China;[2]Beijing Forestry Univ, Beijing Key Lab Wood Sci & Engn, Beijing 100083, Peoples R China

年份：2023

卷号：475

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20234114856873);Scopus(收录号：2-s2.0-85173287083);WOS:【SCI-EXPANDED(收录号:WOS:001088230900001)】；

基金：This work was supported by the Fundamental Research Funds of CAF (CAFYBB2022QA004) . We acknowledge Beijing Zhongkebaice Tech-nology Service Co., Ltd. for the characterization results.

语种：英文

外文关键词：Neural network; Multiple bonding interface; Bamboo-based composite; High strength

摘要：As a sustainable ecological material, bamboo has become a popular modern green building material because of its rich yield, lightweight, high strength and rich cultural heritage. However, due to the limitation of bamboo tube thickness, multiple thickness-direction laminations are usually required to achieve large-sized materials, which leads to a significant decrease in strength. Therefore, it is urgent to find a way produce high-strength bamboo engineering composites on a large scale. Herein, a neural network interface design strategy was proposed, and a mechanical dissociation and partial matrix removal pretreatment method was used to open the weak intercellular layer and bamboo cell wall layer to increase the resin permeation channels. This allowed the resin to form a multi-scale bonding interface between multiple dense bamboo layers, achieving the preparation of bulk bamboo-based composite with adjustable dimensions and properties. The neural network-like bonding interface could firmly fix the compressed bamboo cells and enhance the mechanical properties of the bamboo cell wall and intercellular layer of bamboo, resulting in a tensile strength of 853 MPa for the composite, which was nearly three times that of natural bamboo and significantly superior to many structural materials such as alloys and other bamboo-based composites. In addition, this material showed good mildew resistance, flame retardancy and dimensional stability. This large-size bamboo composites are easy to scale production, which can be used in fields such as wind turbine blades, building structures, and outdoor walkways in the future.