最新刊期
期 6 ， 2018
- 摘要：Bamboo scrimbers were made of bamboo bundles treated with different thermal temperatures. The effects of the thermal temperature on color, water resistance, mechanical properties, surface free energy and thermodynamic performance of the scrimber samples were investigated. The results showed that with increased treatment temperature, color of the bamboo scrimbers became darker with improved water-resistant properties, increased surface free energy, decreased mechanical properties and decreased storage modulus. It was suggested that suitable thermal treatment temperature for bamboo bundles in production should be selected according to application requirements of bamboo scrimber products.关键词：bamboo scrimber;thermal treatment temperature;physical and mechanical properties;dynamic thermodynamic performance
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发布时间：2021-02-07 - 摘要：Chinese fir samples were compressed with different compression ratios from 5% to 40%. Impregnation levels and permeability of the wood samples were tested to evaluate effects of the compression ratio on impregnation of the wood samples. The results showed: 1) The impregnation amount of the wood samples increased as the compression ratio increased. It was also observed that the impregnation amount accounted for about 70% of the total impregnation amount when the compression was fully released. 2) Permeability of the wood samples was improved significantly by compression with little effects on the compression ratio. 3) Improvement of the impregnation resulted from increases of both permeability and wood space after compression. It was proposed that impregnation amount could be controlled with compression ratio in an industrial production.关键词：Chinese Fir;compression;permeability;impregnation
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发布时间：2021-02-07 - 摘要：The authors conducted a series of experiments to evaluate durability of Pinus massoniana wood samples treated with preservatives containing propiconazole, tebuconazole and copper triazole by field stake tests, respectively, in Beijing and Guangzhou. The results showed that for the propiconazole and Tebuconazole（PT） treated wood samples, decay ratings at retention of 0.4 kg/m3 were around 9.5 in Beijing after 9 years, while the stakes by the same treatment were almost destroyed by decay or termites after 7 years in Guangzhou. It proved that the PT treated wood could be used only in above ground circumstances. For the copper triazole treated wood samples, decay ratings were all 10 after 9 years; and the termite ratings were above 8.3 for CuPT treated wood samples at retention of 2.15～3.57 kg/m3, and 4.3～6.7 for CuTEB treated wood samples at retention of 2.19～3.35 kg/m3. It proved that the CuPT treated wood could be used both in exterior ground contact and above ground circumstances.关键词：propiconazole;tebuconazole;copper triazole;field stake test;durability
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发布时间：2021-02-07 - 摘要：In order to meet speed synchronization and load balancing control requirements for driving continuous presses, the authors designed a load balancing algorithm based on the SIMOTION platform. The authors took into consideration both continuous pressing technology for wood-based panel production and the mechanical structure of the continuous presses. The load balancing algorithm was applied in real time operation of a driving control system in a continuous press. The application results showed that loading of each driving unit was effectively distributed with up to 1‰ of velocity precision.关键词：continuous press;driving control system;load balancing
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- 60
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发布时间：2021-02-07 - 摘要：To evaluate the quality of agarwood produced with a cultivated agarwood-inducing technique, 10 batches of agarwood from different regions, were induced with an eccentricity perfusion method. They were then tested based on the Chinese Forestry Standard LY/T 2904-2017 Agarwood. The test results were also used to compare with the test data of a cultivated agarwood induced with a flame-jet drill method for four years. The results showed that agarwood induced with the eccentricity perfusion method could meet the requirements of the LY/T 2904-2017 Agarwood with stable quality regardless of whether or not they were obtained from different regions. Chromone molecules of the agarwood induced with the eccentricity perfusion method were very similar with those of cultivated agarwood induced with the flame-jet drill method for four years.关键词：agarwood;eccentricity perfusion;agarwood-inducing technique;gas chromatography-mass spectrometer（GC-MS）;high performance liquid chromatography（HPLC） analysis;quality evaluation
- 11
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- 234
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发布时间：2021-02-07 - 摘要：Friction plays an important role in the wood cutting process. By summarizing relevant published articles on friction in wood cutting worldwide, the authors reviewed research progress on friction phenomena in wood cutting and introduced basic friction models of wood cutting. They emphasized main factors which influence friction coefficient and presented commonly used anti-friction technology for woodworking cutters in order to explain physical friction phenomena in the wood cutting process and to provide reference to wood cutting theory.关键词：wood;cutting;friction;friction coefficient
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- 200
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发布时间：2021-02-07 - 摘要：As an advanced manufacturing technology, laser is widely used in material processing and modification due to its high energy density, monochromaticity and good directivity. The authors summarized principles, application types and characteristics of laser processing in wood processing and wood-based materials manufacturing and explored potentials for laser modification and processing in order to provide references to laser processing technology for improving efficiency of wood processing and performance of wood materials关键词：laser processing;wood-based material;research progress;thermal treatment
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- 274
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发布时间：2021-02-07 - 摘要：British standards were used to investigate and evaluate slip potential for 80 batches of wooden flooring products, with different decorative materials, since there are no relevant Chinese standards available. Slip potential of a clean surface, a water contaminated surface and a cooking oil contaminated surface were tested, respectively. The results showed that surface medium was the major factor to effect slip resistance. Slip resistance of varnished wood flooring was superior to that of laminated flooring. Assembly style had little contribution to slip resistance.关键词：slip resistance;wooden flooring;surface materials;decorative materials
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发布时间：2021-02-07 - 摘要：The authors compared the full contents of new and old versions of the national standard GB/T 3324 "Wood furniture general technical requirements for wooden furniture". They then pointed out differences in terms, definitions, product classification, requirements, test methods and inspection rules in order to better understand and implement the new version of the standard.关键词：wood furniture;standards
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发布时间：2021-02-07 - 摘要：Three log samples were scanned with an industrial CT scanner. The CT scanning data were reconstructed in three-dimension by VGStudio MAX software in order to detect interior defects of the log samples. The results showed that the reconstructed volume model of the logs could reveal three-dimensional distribution of the log defects. Therefore, shape and location of the defects could be observed intuitively by virtual log sawing, resulting in precisely measured size of the defects. Yield of high quality lumber and value of precious logs could be maximized.关键词：industrial CT;VGStudio MAX;defects detection;3D reconstruction volume model
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发布时间：2021-02-07 - 摘要：A wood defect image detection program was developed using Visual C++ 2017（VC++） and Open CV to detect dead knots and cracks in veneers. First, RGB images were transformed into gray images with fractional-order principal component analysis（PCA）. Then, three channel gray images were segmented with the Chan-Vese（CV） model. Finally, binary images were filtered according to a length-width ratio to detect the dead knots and cracks. The experimental results showed that the algorithm could be used to remove most noise to extract dead knots and cracks in veneers.关键词：veneer;surface defect;dead knot;crack;visual C++;fractional-order;principal component analysis（PCA）;Chan-Vese（CV）model
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发布时间：2021-02-07 - 摘要：The authors introduced quick response code（QR code） technology in order to expand functions of wood collections. QR codes were used to record the main information of wood specimens and basic knowledge of wood science. By scanning the QR code, users could quickly obtain corresponding information of wood specimens. Application of the two-dimensional code technology in establishing wood collections would be useful for digitization of wood collections.关键词：quick response code technology;wood collections;wood characteristics
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发布时间：2021-02-07 - 摘要：<正>为了有效整合技术资源,构建产业技术创新链,着力解决林业和草原重大战略需求以及共性关键技术,保障科研与生产紧密衔接,提升科技创新水平及为行业发展提供精准服务,推进林业和草原科技创新体系建设,国家林业和草原局批准成立了第一批共计110个林业和草原国家创新联盟。其中,由中国林科院木材工业研究所牵头成立六个。分别为:1.重组材产业国家创新联盟
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发布时间：2021-02-07
- 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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