最新刊期
期 0 ， 2020
- 摘要：This paper summarizes the progress in China’s wood industry after entry into the World Trade Organization （WTO） two years ago. It also analyses the opportunities and challenges to be faced by the industry in the coming years. It concludes with recommendations to the wood industry for improving its economic strength and industrial productivity.关键词：World Trade Organization （WTO）;China;wood industry
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发布时间：2021-02-08 - 摘要：Wood protection improves the performance and service life of wood products, which is important in alleviating the pressure on wood supply, conserving forest resources, improving （ecological） conditions and advancing sustainable forestry development in China. This paper reviewed the progress and major current problems in China’s wood protection industry. Some solutions were also suggested.关键词：Wood protection;development;Solutions
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发布时间：2021-02-08 - 摘要：A chemical modification by oxidation experiment was designed to improve the water （resistance） of starch adhesive. The theory and technology of the process, and optimum level of （concentration） determined by orthogonal experimentation, are described in this paper. The starch （adhesive） was modified with 100 g. of maize starch, 30 mL sodium hypochlorite, 4 g. polyvinyl alcohol, 24 g. acrylamide, and 10% toluylene diisocyanate based on the weight of the polymeric starch adhesive. The test results showed that its wet bond strength for plywood was able to meet the （requirements） for type-Ⅱ plywood in the National Standard GB 9846.4-88. Moreover, the cost of modified starch adhesive was comparable to common UF resin adhesive. This study provided an （approach） to manufacturing plywood without formaldehyde （emission.）关键词：Starch adhesive;Modify;Bond strength;water resistance
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发布时间：2021-02-08 - 摘要：Drying experiments for plantation grown Poplar （Populus×euamericana cv.Ⅰ-214）lumber were conducted by radio frequency/vacuum （RF/V） drying method under various RF/V conditions. The drying speed and drying quality of the lumber were determined. A reasonable RF/V drying schedule was established and test results showed that under this RF/V drying condition, Poplar lumber could be dried efficiently and rapidly resulting in good quality lumber compared with the common steam drying method or the high-temperature vapor drying method.关键词：Plantation grown Poplar;Radio frequency/vacuum （RF/V） drying;drying quality;Drying techniques
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发布时间：2021-02-08 - 摘要：A new test method, based on the examination of strain for creep behavior of structural plywood, was presented in this paper. A test experiment on structural Poplar plywood was （conducted） in a box under constant temperature, humidity and load conditions for about two months in order to determine the long-term creep behaviors of samples by using a strain gauge to measure the deflection and a computer to collect the data. The results showed that creep-time curves formed by the data took on a positive slope, which was in accordance with the 3-step creep theory of wood. This study established a base for further research on the creep property of plywood under long-term loads and its structural usage.关键词：Poplar;Structural plywood;creep;Stain gauge
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发布时间：2021-02-08 - 摘要：Starting from the status of panel furniture mills in China, this paper analyzes the issues in production, marketing and other areas caused by the low degree of standardization across Chinese panel furniture mills. The necessity and urgency to advance the standardization is also pointed out. It is particularly discussed the contents of standardization with respect to design, materials, （hardware, ）encoding, machines, equipments and techniques and so on. It is emphasized that （standardization） in design is a key step. Matters need to be taken into account and strategies during the course of standardization are also discussed. It is the authors’ hope that this paper will attract the attention of Chinese furniture mills to the implementation of standardization.关键词：standardization;panel furniture;design
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发布时间：2021-02-08 - 摘要：The sol-gel process, with its associated mild conditions, has become an important and efficient approach for organic-inorganic composite synthesis. This article begins with a description of the sol-gel process and a review of the characteristics of the composite. Some research on wood/inorganic composites using the sol-gel process is also （being） done abroad and this work is also （reviewed） and summarized. Finally, some problems obstructing the development and application of sol-gel process are presented.关键词：Sol-Gel process;Wood/inorganic composites;Current problems
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发布时间：2021-02-08 - 摘要：The flame retardancy of wood is based on its chemical composition and structure. The objective of this study was to explore the （relationship） between the primary chemical properties of wood composition and its pyrolysis and combustion and to analyze the reaction path between the （reacting） flame retardants and wood composition. The conclusion showed that the key point was （temperature） at 200～300 ℃ where the flame retardant was able to promote dewatering and （charring） of wood. It also showed that a reacting type flame retardant was an efficient way to prevent the preservative from leaching. Finally, some suggestions for flame retardancy were made, such as （applying） Nanometer technology for wood flame retardant development and for exploring a versatile, efficient frothing type flame retardant.关键词：Chemical composition;Thermal degradation;Combustion;Reacting flame retardant
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发布时间：2021-02-08 - 摘要：This paper focuses on the industrialized production assembly technology for wood-based wall partitions. It also discusses the construction of the main parts of the walls and the procedure for assembling them.关键词：Assembly;Wood-based wall partition;Industrialized process
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发布时间：2021-02-08 - 摘要：Ammoniacal copper quaternary （ACQ） is a wood preservative being used as a （replacement） for the preservative chromated copper arsenate （CCA） that is being phased out. This article presents the basic physical and chemical properties, performance statistics, safety to （humans,） animals and the environment from ACQ. It also covers treating methods, handling （procedures）, the effect ACQ has on wood properties, and recommendations on how and where it should be used. The purpose of this article is to present information showing that ACQ is a very good preservative for treated wood products and works very well when used in them.关键词：Ammoniacal copper quaternary （ACQ）;Wood preservative;Preservative-treated wood;Chromated copper arsenate （CCA）
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发布时间：2021-02-08 - 摘要：《针叶树材显微特征一览表》由国际木材解剖学家协会 （IAWA）委员会于 2 0 0 4年 3月第一次正式出版发行 ,其初稿于 1999年第 16届国际植物学大会上讨论完成 ,后经委员会协调员Jorgo （H .G .）Richter教授广泛听取意见 ,并修改和编辑 ;于 2 0 0 3年在IAWA学术会上形成出版稿。该表包括了针叶树材主要识别特征 （地理分布、物理性质、生长轮、管胞、螺纹和其它壁加厚、轴向薄壁细胞、射线组成、交叉场纹孔式、射线大小、胞间道、矿物质内含物 ） 12 4条 ,每条均有详细的定义、注释、提示和测量方法。此版《针叶树材显微特征一览表》是 1989年出版的《阔叶树材显微特征一览表》的姊妹篇 ,不仅可为全世界针叶树材识别提供统一的标准 ,也为描述和研究针叶树材的结构、性质、编制针叶树材数据库制定统一编码、木材分类、树木进化和亲缘关系等提供了参考。为了更好理解《针叶树材显微特征一览表》的内涵 ,与国际接轨 ,特将此表译成中文 （因限于篇幅 ,照片省略 ） ,在《木材工业》杂志上分数期连载。希望本表能够成为针叶树材识别的统一标准 ,供我国从事木材工业、木材科学及其相关学科的人员参考 ,为推动我国的针叶树材识别及利用做出贡献。
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发布时间：2021-02-08
- 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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