期刊：
Construction and Building Materials,2024年411:134825 ISSN：0950-0618
通讯作者：
Sun, DL
作者机构：
[Zou, Weihua; Wang, Zhangheng] Cent South Univ Forestry & Technol, Coll Furniture & Art Design, Changsha 410004, Hunan, Peoples R China.;[Sun, Delin; Song, Ling; Sun, Zhenyu; Zhao, Shan; Liu, Wenshuang; Yu, Minggong; Zou, Weihua; Liu, Fang; Wang, Zhangheng] Cent South Univ Forestry & Technol, Coll Mat Sci & Engn, Changsha 410004, Hunan, Peoples R China.;[Sun, Delin; Sun, DL] 498 Shaoshan South Rd, Changsha, Hunan, Peoples R China.
通讯机构：
[Sun, DL ] 4;498 Shaoshan South Rd, Changsha, Hunan, Peoples R China.
关键词：
Superhydrophobic wood;Wet chemical method;Wettability;Bond strength;Interface modification
摘要：
Superhydrophobic modification transforms the wood surface into a non-wetting state, which hinders the effective spreading and penetration of the adhesive at the gluing interface. In this study, a wet chemical method was used to optimize the wettability of the glued interface of superhydrophobic wood (S-wood) through NaOH@KH-550 synergistic treatment. The method can improve the structrue and chemical condition to increase the adsorption capacity of the wood surface for the adhesive, and the bond strength of S-wood increased to 3.21 MPa, which was beneficial to the efficient use of S-wood in construction and furniture fields.
摘要：
In order to improve the utilization and development of bamboo resources and promote its application in the engineering field, the effects of different lattice cores and processing methods on the bending performance of laminated bamboo sandwich panels were discussed in this study. These structures featured distinct lattice cores, namely triangular lattice, square lattice, and Kagome lattice. The manufacturing process included using laminated bamboo as the raw material and adopting the interlocking method and partition method. Four-point bending tests were carried out on laminated bamboo sandwich panels with different lattice cores, and the bending performance of sandwich panels was discussed. The failure mechanism of sandwich panels under bending load, as well as the variation law of mid-span deflection, bending stiffness and ultimate bearing capacity, are analyzed, and the specific stiffness and specific strength of laminated bamboo sandwich panels with four different core layers were compared. At the same time, a fourpoint bending test model of laminated bamboo sandwich panels was established by using finite element software ABAQUS, and numerical simulation was carried out. Three kinds of sandwich panels with different lattice core processed by the interlocking method all show shear failure during the bending loading, among which the triangular lattice sandwich panel has the best bearing capacity, while the specific strength of the laminated bamboo sandwich panel with triangular lattice is also the largest. The failure mode of the laminated bamboo sandwich panel with square lattice processed by partition method is that the upper layer yields under compression and the lower layer is damaged in tension. Its bearing capacity and specific strength are better than those of the three sandwich panels processed by interlocking method, which are 21.6 % and 43.6 % higher than those of the triangular lattice interlocking sandwich panel respectively. The error between the simulation results and the experimental results is less than 5 %, which has good consistency and can effectively predict the bending performance of the laminated bamboo sandwich panels. The laminated bamboo square lattice sandwich panel processing by partition method has excellent bending performance among the four kinds of sandwich panels, which can better present the lightweight and high-strength advantages of laminated bamboo. The research results can provide an effective structural form and theoretical basis for the application of bamboo in the engineering field.
期刊：
SHS Web of Conferences,2024年183:01021 ISSN：2416-5182
作者机构：
Faculty of Art and Communication, Kunming University of Science and Technology, Kunming, Yunnan Province, PR China;College of Furniture and Art Design, Central South University of Forestry and Technology, Changsha, Hunan Province, PR China;Hunan Museum, Changsha, Hunan Province, PR China
关键词：
conference;proceedings;humanities;social
摘要：
<jats:p>For Qin-zither with Literati and artistic temperament, there are high requirements for visual aesthetic in the restoration of damaged lacquer surface. In order to avoid the subjectivity and uncertainty of the traditional restoration method, the role of visual aesthetic in Qin-zither lacquer restoration is studied. This article proposes using the figure-ground visual relationship to analyze the figure-ground relationship between the patching surface and the original surface, assisting in restoration decision-making. During the repair process, the main lacquer patching range and shape are determined based on the visual balance of the composition. According to the final aesthetic effect, the grinding and painting repair method is selected to achieve a beautiful patching lacquer surface with different color layers in harmony with the original lacquer part. In the process of Qin-zither restoration, the visual aesthetic is permeated in the processing of figure and ground relationship, the harmony between the patching surface and the original lacquer part and the creation of lacquer layer.</jats:p>
期刊：
Journal of Cleaner Production,2024年449:141710 ISSN：0959-6526
通讯作者：
Zhang, ZF
作者机构：
[Zhang, Jijuan; Zhong, Yanan; Ren, Yi; Huo, Hongfeng; Zhang, Zhongfeng; Yang, Yang; Zhang, Lei; Huang, Kai] Cent South Univ Forestry & Technol, Coll Furniture & Art Design, Green Furniture Engn Technol Res Ctr, Green Home Engn Technol Res Ctr Hunan,Natl Forestr, Changsha 410004, Hunan, Peoples R China.;[Zhang, Lei; Huang, Kai] Dongyang Furniture Inst, Dongyang 322100, Zhejiang, Peoples R China.
通讯机构：
[Zhang, ZF ] C;Cent South Univ Forestry & Technol, Coll Furniture & Art Design, Green Furniture Engn Technol Res Ctr, Green Home Engn Technol Res Ctr Hunan,Natl Forestr, Changsha 410004, Hunan, Peoples R China.
摘要：
As green renewable resources, wood and its composites are widely used in the construction field, which puts forward higher requirements for their flame-retardant performance. In this study, a high-temperature hydrothermal crystallization method for in situ constructing an epoxy crosslinked Si-Al zeolite-like structural wood composite (WZLC) was reported. Under the action of amine guiding agents and epoxy resin, the zeolite-like catalytic structure constructed in poplar wood comprised negative electrocatalytic sites, which can efficiently catalyze the formation of the carbon layer and endow WZLC with excellent flame retardant, smoke-suppression, and self-extinguishing properties. Compared with the untreated wood (WN), the thermal stability of the treated wood (WZLC) was greatly improved, and the amount of volatile organic compounds released during the decomposition process was significantly reduced. The heat release rate, total heat release, smoke production rate, and total smoke production of WZLC1 decreased by 50.23%, 44.14%, 45.21%, and 28.46%, respectively. Particularly, CO and CO2 yields of WZLC significantly decreased by 92.26% and 92.02%, respectively, indicating that the Si-Al zeolite-like catalytic structure displayed excellent catalytic flame retardant properties, which can effectively decrease the thermal decomposition rate and combustion risk of the WZLC. This method uses less flame retardants to achieve a good flame retardant and smoke suppression effect, thereby reducing the risk of environmental pollution caused by too many flame retardants.
期刊：
E3S Web of Conferences,2024年512:02021 ISSN：2555-0403
作者机构：
College of Furniture and Art Design, Central South University of Forestry and Technology, Changsha 410004, China;School of Architecture, Syracuse University, New York NY13244, USA
摘要：
<jats:p>[Objective] Although there are many kinds of materials for outdoor seating, there are also limitations. People prefer natural wood materials which are warm in winter and cool in summer. From the perspective of sustainable development, wood substitute for natural preservative wood is replaceable, so it has become the main material for outdoor seating. The purpose of this paper is to verify the advantages of wood and wood -like materials in the application of outdoor seating with expert evaluation methods. [Methods] The Del phi expert evaluation method was used to optimize the different schemes of wood and non -wood materials in the empirical study. Based on the three levels of “environment - space - people ”, the evaluation was carried out from multiple perspectives, from the urban ecological environment appeals of the top system of the macro root layer to the extension system of the meso-generative layer of the harmonious space and place system, as well as the micro-representational layer ontology system problems involving the form, function and material technology of outdoor seating. [Result] Finally, based on the quantitative data analysis of Delphi expert evaluation method and standard deviation comparison analysis results, the outdoor seating system design of wood and imitation wood materials was obtained by experts’ preference and affirmation. [Conclusion] T he material selection of outdoor seating can be mainly wood, and the acceptance of imitation wood outdoor seating is similar to wood. When selecting outdoor seating materials, we can gradually introduce composite anticorrosive wood materials to replace non -renewable natural anticorrosive wood.</jats:p>
摘要：
Wood adhesives are widely used in furniture manufacturing, the construction industry, and the fabrication of the internal components of aircraft, cars, and sports equipment. Therefore, the development of wooden adhesives with high stability, strength, and efficiency is a vital research area. Although most studies have focused on improving the bonding properties of adhesives, achieving direct interface control from wood remains a challenge. This study was designed based on the plant root-driven adhesion method to create a hyperactive-interface self-driven regulated wood capable of spreading adhesive into the wood and inducing crosslinking to improve adhesive strength. A multi-poly silicate network structure with multiple reactive sites was formed through the self-polymerization of sodium silicate and crosslinking with dimethylol dihydroxy ethylene urea (DMDHEU) to achieve densified wood and improve the reactivity of the wood surface and interior. Consequently, the environmentally friendly polyvinyl acetate (PVAc) underwent a self-driven bonding process with the wood. These findings indicate that PVAc penetrated the interior of the wood, disrupting the combination of sodium silicate and DMDHEU and grafting onto the reactive sites. This process resulted in a tightly bonded interface connection. Consequently, the shear strength increased from 4.4 to 5.5 MPa, and the wood breaking rate increased from 21.00 % to 45.80 %, representing a 25 % and 118.10 % increase, respectively. Moreover, the tensile strength of the wood in longitudinal joints, transverse joints, miter joints, and mortise-tenon joints was assessed. The results revealed that the sodium silicate/DMDHEU-regulated wood (SS/DDRW) exhibited significantly higher adhesive strength than the original wood (OW). Hence, this bionic design represents a simple and efficient strategy for developing wood adhesives.
摘要：
Traditional wood modification methods often result in the release of harmful substances and energy wastage. This study proposes an efficient and environmentally friendly modification strategy for fast-growing poplar wood. The approach involves polymerizing organic linear molecules within the cell wall to form stitches, thereby enhancing the dimensional stability and mechanical properties of wood and increasing its ability to withstand various environments. Poplar wood specimens were treated via a method that combines heat treatment with acrylic emulsion impregnation. The research findings indicated an improvement in the mechanical properties of poplar wood following the combined treatment. Moreover, poplar wood subjected to this treatment approach exhibited a 35.24 % lower water absorption rate after a 7-day water immersion test, and tangential and radial swelling rates of the wood were reduced by 29.66 % and 45.68 %, respectively. Scanning electron microscopy revealed excellent penetration of acrylic emulsion into wood cells; the emulsion infiltrated the wood and adhered to the cell walls, forming a crosslinked network structure. Analysis of the modification mechanism through X-ray diffraction, Fourier-transform infrared spectroscopy, and X-ray photoelectron spectroscopy showed that the successful infusion of acrylic emulsion compensated for the lower mechanical properties of thermally treated wood, thus improving the utilization value of poplar. The acrylic emulsion is an environmentally friendly and harmless modifier, making the modified wood suitable for various applications, including indoor furniture, logistics, and outdoor facilities. This modification strategy enables efficient resource utilization and provides valuable insights for the sustainable development of the timber industry.
摘要：
Plant fiber-reinforced polylactic acid (PLA) composites are extensively utilized in eco-friendly packaging, sports equipment, and various other applications due to their environmental benefits and cost-effectiveness. However, PLA suffers from brittleness and poor toughness, which restricts its use in scenarios demanding high toughness. To expand the application range of plant fiber-reinforced PLA-based composites and enhance their poor toughness, this study employed a two-step process involving wheat straw fiber (WF) to improve the interfacial compatibility between WF and PLA. Additionally, four elastomeric materials-poly (butylene adipate-co-terephthalate) (PBAT), poly (butylene succinate) (PBS), polycaprolactone (PCL), and polyhydroxyalkanoate (PHA)-were incorporated to achieve a mutual reactive interface enhancement and elastomeric toughening. The results demonstrated that Fe(3+)/TsWF/PLA/PBS exhibited a tensile strength, elongation at break, and impact strength of 34.01MPa, 14.23%, and 16.2kJ/m(2), respectively. These values represented a 2.4%, 86.7%, and 119% increase compared to the unmodified composites. Scanning electron microscopy analysis revealed no fiber exposure in the cross-section, indicating excellent interfacial compatibility. Furthermore, X-ray diffraction and differential scanning calorimetry tests confirmed improvements in the crystalline properties of the composites. This work introduces a novel approach for preparing fiber-reinforced PLA-based composites with exceptional toughness and strength.
