最新刊期
期 6 ， 2022
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摘要：Transparent wood and transparent bamboo, as new types of wood composites, have great potential applying in many fields because of the easy preparation process, high transmittance, good heat insulation, adjustable haze, and manageable rigidity and flexibility. In this paper, the preparation principle of transparent wood and transparent bamboo is expounded. The research progress in the preparation technology of the new materials is summarized. The application of transparent wood and transparent bamboo in energy-saving windows, luminous materials, solar cells, wearable devices, etc. are analyzed. Finally, the current development and application of transparent wood and transparent bamboo at the industry level as well as the existing technology bottleneck problems are discussed. Research ideas for the future industrialized development of transparent wood and transparent bamboo are proposed.关键词：transparent wood and transparent bamboo;green materials;wood-based composite materials;development status;future prospects- 240
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发布时间：2022-12-21 -
摘要：Lignocellulose is an ideal substitute for plastic materials in packaging because of its good biodegradability, excellent mechanical properties, and thermal stability. This paper introduces the composition, characteristics, and types of lignocellulosic materials, summarizes the research progress of lignocellulosic materials in food packaging, cushioning packaging, and intelligent packaging, and analyzes the existing problems and shortcomings of lignocellulose materials. The future research and application of lignocellulosic materials in packaging are proposed.关键词：lignocellulose;packaging materials;food packaging;cushioning packaging;intelligent packaging- 163
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发布时间：2022-12-21 -
摘要：Glued laminated timber(GLT)is a main material for beam-column timber structures and log houses in China. In this paper, the current status of GLT industry in China was elaborated. The effects of the key manufacturing process of GLT including the laminate grading, finger-joining process, and gluing process on the mechanical properties of GLT were analyzed. The existing challenges and developing trends of the main manufacturing processes were described. Based on the practical situation, the bending properties and failure modes of GLT were analyzed, and the reinforcement mechanisms of cloth-like, rod-like, and plate-like reinforcement on the GLT were discussed. The benefits and deficiencies of the reinforcement technologies were summarized.关键词：glued laminated timber (GLT);manufacturing process;bending properties;reinforcement technology- 156
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发布时间：2022-12-21
REVIEWS
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摘要：At present, “Digitalization” is an important way for industries and companies to achieve upgrading and high-quality development. This paper clarifies the connotation of digital transformation of traditional furniture companies by categorizing the connotation of digital transformation. Through business interconnection and integration of digital technology, customer value recreation is completed and business model innovation and enterprise strategy are upgraded. The three breakthrough scenarios of digital transformation were summarized as: business scenario digitalization, business process digitalization, and operation management digitalization. The principle of digital transformation for traditional furniture companies were proposed to determine their current stage. Using system thinking, it expounds construction methods of digital transformation technology structure for traditional furniture companies: guiding the design of digital transformation business structure through the top-level strategic planning of the enterprise, determining the technology, application and data structure of digital transformation by the business structure, guiding the digital transformation team to choose appropriate digital technologies and complete the design of specific technology, data and application structure through the business structure, so as to avoid the huge gap from the top-level strategy to the implementation of technology directly. Using an example of a traditional furniture company, it further describes the four elements in the business structure: business process, business function, organizational structure, and identification and analysis of business data. Finally, it provides a list of digital technologies applicable to furniture companies.关键词：Furniture company;digital transformation;transformation path;business structure- 72
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发布时间：2022-12-21 -
摘要：In order to improve information systems in custom furniture production, scattered joint production management, production organization, and management cost, an information system structure for the production line was proposed. Through the new generation of mobile communication technology to connect with other production line equipment, the old production line equipment was integrated into the intelligent network. The production line equipment of other alliance enterprises is connected to the same platform. The unified production task command is carried out, so as to realize the collaborative manufacturing of all production lines. This system theoretically reduces the management processing length, improves the uniformity of production management, and provides hardware and software support for the rapid response of production management, ensuring the smooth operation of the production line.关键词：custom furniture;smart factory;informatization;production line connection- 40
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发布时间：2022-12-21
RESEARCH ON PLANNING AND MANAGEMENT FOR HOME FURNISHING DIGITAL WORKSHOP
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摘要：To explore the origin and evolution of Camellia sinensis, xylem characteristics of Camellia sinensis var. assamic (Yongde ancient tea tree in Lincang, Yiwu Ancient Tea Tree in Xishuangbanna, National Variety Yunkang No. 10) were examed and compared with Magnolia miocenica. Based on the previous studies on the evolutionary trend of xylem, the evolutionary relationships of three varieties C. sinensis var. assamica plants were explored, as well as the identity and evolutionary identity of C. sinensis var. assamica from three places. The results showed that the anatomical structures of three Pu'er tea plants and M. miocenica were relatively primitive. Most of the anatomical characteristics of C. sinensis var. assamica including vessel thickness, vessel combination, vessel pit, perforated plate, ray's height, and vessel-ray pit were more evolved than M. sinensis. Some characteristics such as the shape of the vessel showed similarities. But in the characteristics of wood ray type and vessel diameter, and those easily affected by the environment (perforated plate bars, vessel length, vessel diameter), M. miocenica were more evolved than those of C. sinensis var. assamica. These results show nonuniformity of xylem evolution. The characteristics of wood rays and vessel size among the three places of C. sinensis var.assamica were significant different, but evolutionary advancement needs to be verified.关键词：Camellia sinensis var. assamica;Magnolia miocenica;xylem;anatomical structure- 98
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发布时间：2022-12-21 -
摘要：In order to explore a green and efficient method to improve wood permeability, a deep eutectic solvent (DES) composed of the choline chloride-lactic acid was selected as the treatment solution to enhance the permeability of balsa wood（Ochroma pyramidale）. The effects of the mole ratio of the choline chloride to lactic acid in DES,n(ChCl)∶n(LA), DES volume fraction, and treatment time on wood permeability were comprehensively examined by the response surface optimization methodology, based on the results of single factor experiments. The 1 h water absorption weight gain rate was used as the evaluation index of permeability to determine the optimal treatment conditions. The test results showed that the effects of the factors on the response value were in the order: DES treatment time > DES volume fraction > n(ChCl)∶n(LA). The optimal treatment conditions were as follows: 1:10 n(ChCl)∶n(LA), 73% DES volume fraction, 6.6 h treatment time, and 90 ℃ treatment temperature. Under these conditions, the 1 h water absorption weight gain rate of treated samples was 416.34%, which was 168.81% higher than the untreated samples. The results from the field emission scanning electron microscopy and mercury injection test showed that the fiber cell wall remained intact, while a large number of microscopic pores were generated in the middle lamella and the cell corner. There were cracks between the ray parenchyma cells and the axially arranged fibers. The porosity of treated samples was 7.28% higher than untreated samples.关键词：deep eutectic solvent (DES);balsa wood;Wood permeability;pretreatment;response surface methodology- 116
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发布时间：2022-12-21 -
摘要：To improve color regulation of superhydrophobic wood with a sufficient green construction method, a colored superhydrophobic coating agent based on metal oxide was proposed to realize the construction of colored superhydrophobic wood and the surface of wood. Chinese fir (Cunninghamia lanceolata) was chosen as the research object to establish a superhydrophobic surface. Superhydrophobic coatings with different colors were prepared by simply mixing metal oxides of various colors with polydimethylsiloxane (PDMS) in an aqueous solvent. The color gradient control of colored superhydrophobic wood was achieved by adjusting the mass ratio of different metal oxides. It was found that the treated wood had good superhydrophobic properties. Its surface had a micron-and nanometer-scale hierarchical bionic lotus leaf surface structure formed by particle arrangement. The contact angle of water droplets was more than 150°. By changing the types of metal oxides, nine kinds of colored superhydrophobic wood with different colors were successfully prepared. Superhydrophobic colored coatings conferred super-hydrophobicity and color diversity on the wood. This research findings significantly expand the application of superhydrophobic wood in the decorative field and provid the theoretical basis and reference for the construction of colored superhydrophobic wood.关键词：wood;colored superhydrophobic surfaces;metal oxides;color regulation- 121
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发布时间：2022-12-21 -
摘要：Hexaconazole (Hex) strongly inhibits the growth of wood decay fungi. It is potentially a high-efficacy wood preservative. This study explored the photodegradation characteristics of Hex and provided a reference for the durability of wood treated with Hex. A standard analysis method of Hex was established by the high-performance liquid chromatography (HPLC). The Hex retention rate and ultraviolet (UV) light exposure duration were measured. Furthermore, the photodegradation characteristics of Hex were concluded. The photodegradation of Hex was not obvious for a 168 h UV-exposure duration at a wavelength of 340 nm. Hex has good stability under 340 nm UV light. Under the UV wavelength of 254 nm, the change of concentration had no significant effect on the photodegradation difference of Hex solution. The UV exposure duration had a great effect on the photodegradation of Hex solution, and the degradation process of Hex showed a certain regularity. The degradation characteristics of Hex conformed to the first-order kinetic equation (coefficient of determination R2=0.996). The above results provide reference for exploring the outdoor durability of wood treated by Hex.关键词：Wood preservative;hexaconazole;UV light;photodegradation- 62
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发布时间：2022-12-21 -
摘要：Polulus tomentosa sawn timber were densified with different preheating time and compression time, and heat treatment was performed to reduce spring-back. Then the unilaterally surface-densified wood were coated with the water-based UV paint. The properties of the paint film were evaluated. The results showed that after preheating treatment and with the increase of compression time, the distance between the peak density of the specimen and the compression surface gradually increased, while the density of the surface layer decreased gradually. The impact resistance to falling balls, the adhesion property, and the hardness of the paint film were also reduced. The compression time has a significant effect on the wear resistance of the paint film. The heat treatment does not adversely affect the performance of the unilaterally surface-densified wood paint film. The above performance properties all reach the standard of the high-quality solid wood floor specified in GB/T 15036—2009 "Technical Requirements for Solid Wood Flooring". To optimize the coating performance and costs, it was recommended to set the preheating time at 0 s (no preheating) and the compression time at 60 s. The wear amount of the paint film was 0.1203 g; the diameter of the anti-falling ball impact indentation was 10.155 mm; the adhesion and hardness of the paint film were grade 0 and 4H, respectively.关键词：unilaterally surface-densified wood;water-based UV paint;Profile density;coating performance- 68
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发布时间：2022-12-21 -
摘要：The changes in temperature were examined on five common species for solid wood flooring blanks during the hygrothermal treatment for disinfestation and sterilization by using a conventional wood dryer. The temperature of the flooring blanks increased rapidly. The changes in temperature inside the wood blanks were almost linear with the increase in environment temperature at the beginning of the heating process, then, gradually became fluctuated steadily with the heating medium (humid air). The stable internal temperature of flooring blanks was relatively consistent for different wood species. It was easier for the flooring blanks to reach and maintain the target temperature when the heating uniformity was improved by increasing the medium humidity. In this study, the treatment condition was set corresponding to the equilibrium moisture content of flooring blanks at 11.5%. To meet the lowest stable internal temperature of flooring blank when the treating-temperature was consistent, the determined S1~S3 processes (60 °C to 70 °C and 72.3% to 90.4% RH) and S4~S6 processes (75 °C to 85 °C and 76.7% to 92.9% RH) met the temperature requirements of hygrothermal process for wood disinfestation and sterilization, respectively.关键词：solid wood flooring blank;disinfestation;sterilization;hygrothermal treatment;temperature changes- 64
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发布时间：2022-12-21 -
摘要：The microstructure and mechanical properties of bonding interphase between isocyanates adhesive and Eucalyptus wood particles with different resin content were investigated by using fluorescence microscopy, scanning electron microscopy, energy-dispersive spectroscopy, and nanoindentation. Results indicated that the penetration depth of adhesive into wood increased with the increasing resin content. When the resin content was 6%, the average penetration depth and effective penetration depth reached 1 074 μm and 712 μm, respectively. The penetration of adhesive into wood structures made a positive contribution to the elastic modulus (Er) and hardness (H) of wood cell walls in the bonding interphase. However, the resin content showed no significant effect on the mechanical properties of bonding interphase. The Er and H values of cell walls after adhesive penetration was 20.04 GPa and 0.69 GPa under the resin content of 6%, respectively. Meanwhile, the internal bonding strength and thickness swelling were improved as the resin content increased from 3% to 6%. When the resin content increased to 9%, the bonding performance was not improved. It was suggested that the resin content needs be controlled at about 6% when isocyanates adhesive was used to prepare particleboards.关键词：particles;isocyanate;penetration;bonding interphase;nanoindentation;mechanical properties- 111
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发布时间：2022-12-21 -
摘要：Based on the analysis of less information interconnection and intercommunication among woodworking machines, it is the key to developing complete and effective sharing standards to solve the problem. The basic principles and requirements of the sharing standards are put forward. Then combined with the Open Platform Communications unified architecture (OPC UA) standard, the mapping rules of the information model of woodworking machines and production line in the OPC UA address space are established. The instantiation and implementation method of the information model are discussed. The practicability and effectiveness of OPC UA standards in information interconnection and intercommunication of woodworking equipment are verified.关键词：woodworking equipment;interconnection and intercommunication;information model;Open Platform Communications unified architecture (OPC UA)- 48
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发布时间：2022-12-21
RESEARCH PAPERS
- 摘要：National-timber-storage is a warehousing system of timber that is harvested in time, reasonably processed, uniformly stored, circulated, and used according to different regions and purposes to meet the market demand and national strategic needs. The construction of national-timber-storage is a major measure to ensure national timber security, maintain ecological security, achieve the dual-carbon goal, promote the implementation of timber storage strategy, and help rural revitalization. Starting from the basic concept and connotation of national-timber-storage, this paper introduces the status quo of national-timber-storage and emphasizes the necessity of national-timber-storage construction. The major plan to develop national-timber-storage was proposed, including establishing and improving the national-timber-storage system, innovating the management mechanism of national-timber-storage, promoting the construction of “Internet+National-timber-storage”, and ensuring the supply balance of timber market. It provides a reference for national-timber-storage construction, promote the green and high-quality development in forest and grass industry, ensure the long-term stability of the national timber industry, and achieve energy security, carbon peaking, and carbon neutrality.关键词：national-timber-storage;timber security;national strategy;carbon peaking and carbon neutrality;bamboo
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发布时间：2022-12-21 -
摘要：The National Natural Science Foundation of China (NSFC) plays a key role in the theoretical research and fundamental innovation. Wood science is important for practicing the “Two Mountains Theory” and guaranteeing national wood security. This paper investigated the wood science projects funded by NFSC during 1988—2019, in the aspects of overall information, project categories, supporting agents, regional distribution, project managers, and keywords. It summarized of the trends and put forward suggestions in the future research of wood science.关键词：National Natural Science Foundation;wood science;project characteristics- 359
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发布时间：2022-12-21
DISCUSSION ＆SUGGESTION
- Address：Box 29，Research Institute of Wood Industry, No. 1, Dongxiaofu, Haidian District, Beijing Postal code：100091
- Tel：010-62889419 Email：mckx@caf.ac.cn
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