摘要：
Wood failure percentage (WFP) is one of most important indices to evaluate the shear properties for wood-based composite bonded by adhesive, especially for cross-laminated timber. A new WFP measurement method for wood-bamboo composite bonded by phenolic resin (PF) and methylene diphenyl diisocyanate (MDI) separately under shear stress was proposed by combing image processing and deep learning (DL): its accuracy was corrected by the entropy weight method. The results show that the WFP measured by the DL method is in good agreement with the experimental value, however, the experimental conditions still exert a significant influence on the accuracy of measurement attained using the DL method, in which the inherent color of the adhesive and the change in the substrate of the specimens are the main factors affecting measurement accuracy. The relative error between the DL method and the experimental value can be reduced to no more than 14.29% after correction by the entropy weight method.
摘要：
High-strength, dimensionally-stable, moisture-absorbing, and heat-insulating materials are critical for ensuring the safety of building structures and human comfort. As a natural moisture-adjusting and heat-insulating material, wood is widely used in buildings, but its low strength and flammability pose safety hazards. This paper reports a simple method to construct an organic-inorganic hyperbranched structure in poplar wood (WSi-Al-EP). The bending and compressive strength of WSi-Al-EP reached 103.50 MPa and 80.41 MPa, respectively. This composite wood material exhibited high strength and stable performance, and it also improved the shortcomings of traditional inorganic-modified materials such as unstable sizes and the loss of modifiers. Moreover, the material did not burn in a long-term high-temperature flame, indicating its heat and combustion resistance, and showing that it can be used in wooden building structures.
摘要：
＜正＞第60届米兰国际家具展（Salone del Mobile.Milano）于2022年6月7日至12日在米兰国际展览中心举行，这是展会通过利用其举足轻重的地位来庆祝的一个重要里程碑：品质、创新、美，以及比以往任何时候都更重要的可持续发展。本届米兰国际家具展着眼于未来，重点关注行业对循环经济和环境影响的承诺与认识，因为它知道每年生产的美好事物必须与地球和谐相处，因此这是符合道德伦理和可持续发展理念的。
期刊：
Progress in Organic Coatings,2023年174:107267 ISSN：0300-9440
通讯作者：
Yingfeng Zuo<&wdkj&>Ping Li
作者机构：
[Li, Xingong; Zuo, Yingfeng; Zhang, Mengying; Lyu, Jianxiong] Cent South Univ Forestry & Technol, Coll Mat Sci & Engn, Changsha 410004, Hunan, Peoples R China.;[Li, Ping] Cent South Univ Forestry & Technol, Coll Furniture & Art Design, Changsha 410004, Hunan, Peoples R China.;[Lyu, Jianxiong] Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China.
通讯机构：
[Yingfeng Zuo; Ping Li] C;College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan 410004, PR China<&wdkj&>College of Furniture and Art Design, Central South University of Forestry and Technology, Changsha, Hunan 410004, PR China
摘要：
This paper describes the investigation of the effect of different concentrations of silane coupling agent KH560 (KH560) on the interface properties of silicate modified poplar wood (SMPW). These properties include the surface wettability, free energy, and film adhesion. With the exception of the film adhesion rating of SMPW treated with 0.5 % KH560 was grade 2, the film adhesion rating of SMPW treated with 1.0 %-3.0 % KH560 was grade 1. The SEM images showed that cracks between the waterborne (water-based polyurethane modified acrylic acid) varnish and SMPW gradually decreased upon increasing the KH560 concentration. The results of the FI-TR and XPS all indicated that the characteristic peak of Si-O-Si and the relative proportion of Si-O-Si groups were positively correlated with the concentration of KH560 in the treated SMPW. This indicates that KH560 was successfully grafted onto the substrate surface. After KH560 was combined with a water-based sealing primer (WBSP), the larger the concentration of KH560, the stronger the bond at 1730 cm(-1). This means that the epoxy group in KH560 reacted with WBSP and was connected with the WBSP. After drenching the SMPW with the KH560 solution that had concentrations of 0.5 %, 1.5 %, and 2.5 %, the contact angles of WBSP on the substrate's surface were 62.55 degrees, 60.10 degrees, and 49.45 degrees, respectively. The surface free energy of SMPW treated with 0.5 %, 1.5 %, and 2.5 % KH560 was 45.87, 49.55, and 50.29 (10(-3) J.m(-2)), respectively. This indicated that increasing the KH560 concentration improved the wettability, increased the SMPW free energy value, and improved the film adhesion.
