最新刊期
      期 0 ， 2020

        Forward

      • ZHANG Sen-lin
        Vol. 23, Issue 1, Pages: 1-3(2009) DOI: 10.19455/j.mcgy.2009.01.001
        摘要：The world economy is now in a difficult situation as a result of the financial turmoil sparked by the subprime crisis in the United States. In this turbulent environment,the recent global financial turmoil and the Chinese economic situation were analyzed. The author believed that these conditions would have considerable impacts on China’s forest industry. However,in the author’s opinion,this would also bring opportunities for the Chinese forest industry to promote industry integration and improvement.  
        关键词：financial turmoil;China;forest industry;development   
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        发布时间：2021-02-08
      • YE Ke-lin,LU Jian-xiong,YIN Ya-fang
        Vol. 23, Issue 1, Pages: 4-6(2009) DOI: 10.19455/j.mcgy.2009.01.002
        摘要：This paper is the first part of the subsequent research reports about the project of "Processing,Evaluation,and Application of Dimension Lumber from Chinese Commercial Wood Species" sponsored by the Chinese National Key Program for Applied Research. This paper reviews the background,objectives,and latest research developments in the area of dimension lumber processing and application in China for the previous years. It also discusses how to develop a necessary and unique processing technology according to the available forest resources and future wood product market needs in China. This discussion will provide guidance and technical support to the Chinese wood industry for its structural reform and technological upgrade.  
        关键词：dimension lumber;commercial forest;larch;processing optimization;grading;connection   
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      • CHEN Ren-wang
        Vol. 23, Issue 1, Pages: 41-43(2009) DOI: 10.19455/j.mcgy.2009.01.013
        摘要：Having reviewed progress of wood protection industry in China in the past years,the author analyzed the main problems,and proposed countermeasures for the sustainable development of the sector.  
        关键词：Wood protection;industry;status;countermeasure   
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        Review

      • YE Ke-lin,XIONG Man-zhen
        Vol. 23, Issue 1, Pages: 7-10(2009) DOI: 10.19455/j.mcgy.2009.01.003
        摘要：The authors analyzed the forest resources,market needs,and features of forest product industries in both of China and the USA and made a comparative analysis on the forest products trade between the two countries over the past 10 years. It was observed that China and the USA are important trade partners in forest products as well as with many other goods and services. An important conclusion was that there are comparative advantages in forestry between the two countries that are extremely complementary. The future trend is that China will continue to export low to middle end products to the USA and,in return,import primarily logs and lumber to meet China’s needs. Suggestions to promote a healthy forest products trade between the two countries were also given.  
        关键词：Forest products;trade;China;USA   
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        发布时间：2021-02-08
      • BAO Fu-cheng
        Vol. 23, Issue 1, Pages: 11-13(2009) DOI: 10.19455/j.mcgy.2009.01.004
        摘要：The research developments and achievements of wood science and technology at the Chinese Academy of Forestry during the past 50 years are reviewed and summarized. Now,the Chinese Academy of Forestry is known as one of the premier forestry research institutions in the world with many knowledgeable scientists and advanced facilities. Reflecting on these achievements,new research areas and directions in wood science and technology are discussed in the study.  
        关键词：wood science and technology;Chinese Academy of Forestry   
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        发布时间：2021-02-08

        Research & Development

      • SHI Jun-you
        Vol. 23, Issue 1, Pages: 14-17(2009) DOI: 10.19455/j.mcgy.2009.01.005
        摘要：An aqueous polymer isocyanate （API） adhesive,that cures under room temperature,was developed with modified corn starch as its main component. To meet the specifications required by JIS K6806-2003 for room temperature cured resin,the author optimized the formulation of the API system using an orthogonal experiment. The influential factors evaluated in this study included percentages of modified corn starch,oxalic acid,polyvinyl alcohol （PVA）,and polymeric diphenylmethane diisocyanate （PMDI）. Three-layer plywood samples were made and their shear strengths under three conditions （normal,60 ℃ hot-water immersion,and repeat boil） were evaluated. The results showed that the performance of plywood samples made with the optimized API formulation met the JIS K6806-2003 product specifications.  
        关键词：room temperature curing;corn starch;modification;aqueous polymer isocyanate （API）;compressive shearing strength   
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      • GUO Ming-hui,CAO Long
        Vol. 23, Issue 1, Pages: 18-20(2009) DOI: 10.19455/j.mcgy.2009.01.006
        摘要：Reactive dye,being friendly to both environment and human health,is now used in the wood industry to replace acid-based dye materials. However,limited research has led to the understanding of the effect of reactive dye on the surface characteristics of wood veneers. Poplar veneer was used in this study to investigate wettability,surface quality,and bonding strength after being treated with the reactive dye. The results showed that after the reactive dye treatment the poplar veneer had more surface pits and improved bonding strength.  
        关键词：reactive dye;Poplar veneer;wettability;bonding   
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        发布时间：2021-02-08
      • WANG Jun-ling,GUO Hong-xia,LI Yong-qing,WANG Qun
        Vol. 23, Issue 1, Pages: 21-23(2009) DOI: 10.19455/j.mcgy.2009.01.007
        摘要：To meet the demand of wood-based composite industry for electromagnetic shielding structures,nickel-based fabric and copper foil were selected to laminate to the surface of medium density fiberboard （MDF） panels to make electromagnetic shielding composite. The nickel-based fabric and copper foil were bonded on the MDF panels by applying an acetate emulsion and an epoxy resin,respectively. Surface bonding strength,modulus of rupture,and shielding efficiency of the composites were tested. The results indicated that the laminated composites had better modulus of rupture than the substrate MDF panels. The shielding efficiencies were 60 dB for the nickel-fabric laminated MDF panels and 70 dB for the copper-foil laminated MDF panels.  
        关键词：electromagnetic shielding efficiency;wood-based composite;bonding properties of surface   
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        发布时间：2021-02-08
      • HUANG Xiao-dong1,JIANG Ze-hui2,CHEN Ling3,REN Hai-qing3
        Vol. 23, Issue 1, Pages: 24-27(2009) DOI: 10.19455/j.mcgy.2009.01.008
        摘要：Because petroleum and coal,as primary energy resources,are diminishing and cause pollution and environmental problems,wind energy will provide a sustainable and green alternative to the increasing world demand for energy.Traditional fiberglass-reinforced plastic （FRP）,which is primarily used to make wind blades,faces some challenges such as sustainability,cost,and disposal. In this study,the feasibility of utilizing Cunninghamia lanceolata to make wind turbine blades was investigated. The results showed that the maximum tensile strength of wind turbine blades,along its grain direction,was 123 MPa and its maximum compression strength was 82 MPa.Their mechanical performance was equivalent to,or exceeded,the commonly-used wood/epoxy materials. The results show that the Cunninghamia lanceolata could be a potential alternative for wind blades in the future,but further research about its reliability are needed.  
        关键词：wind turbine blades;composite;reinforcement;Cunninghamia lanceolata;grading   
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        发布时间：2021-02-08

        Research Bulletin

      • WANG Feng-hu,BAI Bo,SUN Jian-ping,YANY Yue-ming
        Vol. 23, Issue 1, Pages: 28-30(2009) DOI: 10.19455/j.mcgy.2009.01.009
        摘要：In order to improve the surface wettability of wheat straw and increase its bonding strength with adhesives,an aqueous alkali was used to modify the surface characteristics. Based on the theory of spreading penetration,the surface wettability of wheat straw following alkali-treatment was evaluated. The mechanical properties and thickness swelling of the particleboard made from the treated wheat straw were tested and compared with the control wheat straw particleboard. The results showed that both modulus of elasticity and modulus of rupture of the particleboard made with the treated wheat straw were slightly decreased. However,the internal bond strength and 2-hour thickness swell were improved considerably. All properties tested in this study met the product specification of National Standard GB/T 4897-2003 for particleboard.  
        关键词：wheat straw;surface treatment;aqueous alkali;particleboard;mechanical properties   
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        发布时间：2021-02-08

        Discussion & Suggestion

      • ZHOU Ding-guo,ZHOU Xiao-yan
        Vol. 23, Issue 1, Pages: 31-33(2009) DOI: 10.19455/j.mcgy.2009.01.010
        摘要：East China,where 60% of China’s forest resource is consumed,is the most developed region in China in the areas of economy,science,and technology. This paper presents a review of the latest technology and product developments in China’s wood industry including log processing,wood-based panel manufacturing,and secondary wood product processing in the eastern region of China. Furthermore,some key barriers in promoting sustainable wood products are identified and the technological demands for China’s wood industry are discussed. It is found that the intellectual property,product standards,and marketable brands play an important role in the wood product industry. Finally,research tasks during the next national Twelfth Five-Year Plan period are proposed and the expected economic benefits,social benefits and ecological benefits are analyzed.  
        关键词：east China;wood industry;Twelfth Five-Year Plan;technological demands   
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        发布时间：2021-02-08
      • WU Yan-mei1,HUANG Rong-feng1,LU Jian-xiong1,ZHAO You-ke1,SHI Yu-long2
        Vol. 23, Issue 1, Pages: 34-36(2009) DOI: 10.19455/j.mcgy.2009.01.011
        摘要：Research on phytosanitary treatments for wood packaging materials,both in China and abroad,were reviewed. The commonly-used treating methods that were introduced and discussed in this paper included fumigation,chemical pressure impregnation,heat treatment,high frequency microwave treatment,and radiation treatment. The advantages and disadvantages of these different phytosanitary treatments were analyzed. Finally,suggestions for future research to improve fumigation and heat treatments were presented.  
        关键词：wood packaging;phytosanitary;heat treatment;fumigation treatment   
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        Practical Techniques

      • LEI De-ding,ZHOU Jun-hao,LIU Bo,HAO Bing-ye
        Vol. 23, Issue 1, Pages: 37-40(2009) DOI: 10.19455/j.mcgy.2009.01.012
        摘要：分类介绍木材改性的主要工艺方法以及技术特点。根据木材改性技术的现状,指出改性木存在的问题与对策,以及木材改性技术今后的发展趋势。  
        关键词：木材;改性;技术;发展   
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