最新刊期
      期 0 ， 2020

        Review

      • WU Shu-dong
        Issue 3, Pages: 1-4(2008) DOI: 10.19455/j.mcgy.2008.03.001
        摘要：Energy consumption during building construction and use is a major part in the total energy consumption in China.As a renewable material,wood products are excellent building materials that show good insulation properties and require less energy to produce.Research results indicated that reducing the consumption of steel,concrete,and other mineral-based materials,and increasing the use of wood-based products,will play an important role in developing a strategy of energy-efficient construction.  
        关键词：energy saving;energy efficiency;wood;insulation property   
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        发布时间：2021-02-08
      • LIANG Shan-qing1,CAI Zhi-yong2,WANG Xi-ping2,Robert J.ROSS2,FU Feng1
        Issue 3, Pages: 5-8(2008) DOI: 10.19455/j.mcgy.2008.03.002
        摘要：Current developments and applications of nondestructive testing（NDT） on wood and wood products in North America,from a literature search,are presented.Advantages and disadvantages of most commonly-used NDT techniques,such as visual inspection,stress wave,vibration,computer tomography,and acoustic emission,are discussed.This paper is expected to provide useful guidance to the application and practice for using advanced NDT technology in China’s wood industry.  
        关键词：nondestructive test（NDT）;wood;stress wave;vibration;ultrasonic wave   
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        发布时间：2021-02-08
      • CHEN En-ling1,FEI Ben-hua2
        Issue 3, Pages: 9-12(2008) DOI: 10.19455/j.mcgy.2008.03.003
        摘要：This paper reviewed worldwide research on the performance of metal connectors and fasteners in wood frame structures.It was found that most research studies of wood structure connections focused on decay resistance,fire retardants,connection reinforcement,effect of wood characteristics,and connection design.The current status of research on connectors used in wood frame structures was summarized and the future trend was also discussed.It is believed that this study would provide some insight and suggestions for a further research program on metal connectors in China.  
        关键词：wood structure;metal connector;connection performance   
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        Research & Development

      • CHEN Yong-ping,LI Chun-sheng,WANG Jin-lin,WANG Zhi-tong
        Issue 3, Pages: 13-15(2008) DOI: 10.19455/j.mcgy.2008.03.004
        摘要：To improve the performance of veneer-based panel products,melamine-formaldehyde resin was impregnated into each individual Birch veneer by roller-pressing before lamination.The effects of resin content,compression rate of the roller-pressing,and pressure during hot-pressing were evaluated for selected panel properties including thickness swell,modulus of rupture,tensile strength,and internal bond strength.The results showed that with 50% resin content,20% compression ratio,and 2.0 MPa pressure during hot pressing to make the reconstituted veneer lumber,performance of the lumber could meet the desirable specifications.  
        关键词：melamine-formaldehyde resin;Birch;veneer;impregnation;reconstituted lumber   
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        发布时间：2021-02-08
      • CEN Lan,CHEN Fu-lin,CHEN Guang-han
        Issue 3, Pages: 16-19(2008) DOI: 10.19455/j.mcgy.2008.03.005
        摘要：The surface of wood flour was modified by three coupling agents: Titanate,Aluminate,and Al-Ti,respectively.The effects these coupling agents had on mechanical and rheological properties in wood-plastic composites were investigated.Scanning Electron Microscopy was used to analyze the effects of surface modification.The results showed that the Al-Ti compound improved the dispersion of the wood flour in the polymer matrix resulting in substantial improvement in the mechanical strength of the composites.The manufacturing process was also improved by adding Al-Ti compound coupling agent to the mixture.However,modification of wood flour with the coupling agents had insignificant effects on flexural modulus of the composites.  
        关键词：Al-Ti compound coupling agent;wood flour;modification;polyvinylchoride;interfacial compatibility;dispersion   
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        发布时间：2021-02-08
      • ZENG Qin-zhi1,CHEN Wei-ning2
        Issue 3, Pages: 20-22(2008) DOI: 10.19455/j.mcgy.2008.03.006
        摘要：In order to investigate the feasibility of recycling waste MDF products,the authors conducted an experiment to examine some selected physical characteristics of fibers from recycled MDF and compared it to the fresh fibers from an existing MDF mill.The results showed that the recycled fiber was shorter than the fresh fiber,and its surface was partially covered by a thin layer of urea formaldehyde resin.The differences in morphology and appearance between the two different fibers were not so prominent as to have any negative impact on the reuse of the recycled fibers.However,further research on MDF performance made from the recycled fibers is needed.  
        关键词：waste fiber;MDF;fiber morphology;appearance   
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        发布时间：2021-02-08
      • LI Xian-jun1,ZHANG Bi-guang2
        Issue 3, Pages: 23-25(2008) DOI: 10.19455/j.mcgy.2008.03.007
        摘要：Drying characteristics of Masson Pine（Pinus massoniana）,under different microwave-vacuum conditions,were studied systematically in this paper.The results showed: 1) The process of microwave-vacuum wood drying could be divided into three stages: a short period of accelerating drying rate,a long stable period drying rate,and a period of decelerating drying rate,with the second period occupying 50% of the whole drying process;2) Increasing initial wood moisture content and microwave radiation time increased the drying rate of wood accordingly;3) The vacuum levels affected the drying rate proportionally;and 4) The effect of sample thickness on the drying rate could be negligible.  
        关键词：drying;microwave-vacuum;basic laws;Masson Pine   
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        发布时间：2021-02-08
      • GUO Hong-wu1,WANG Jin-lin2,LI Chun-sheng2,YAN Hao-peng2
        Issue 3, Pages: 26-28(2008) DOI: 10.19455/j.mcgy.2008.03.008
        摘要：Two different transparent coatings for wood products,polyurethane and acrylic varnishes,were selected to evaluate their lightfastness under laboratory conditions.Two films coated with the two varnishes were exposed under a Xenon-lamp attenuation instrument.After being exposed for 100 hours,it was found that color changed in both films.The color fading of the polyurethane film was more severe than that of the acrylic film.The chromaticity coordinates of the polyurethane film increased significantly.This indicated that the polyurethane film was more likely to etiolate than the acrylic film.  
        关键词：water-varnish;polyurethane;acrylic;uncombined films;lightfastness   
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        发布时间：2021-02-08

        Discussion & Suggestion

      • WU Zhi-hui
        Issue 3, Pages: 29-32(2008) DOI: 10.19455/j.mcgy.2008.03.009
        摘要：To evaluate green furniture quantitatively,the author introduced the basic principle of an evaluation system for green furniture.Based on this principle,the author developed a green furniture evaluation system in this paper.The evaluation system integrated the environmental requirement,sustainability,energy,and concept and characteristics of green furniture.Finally,the applications and methods of the evaluation system for green furniture were discussed.  
        关键词：green furniture;evaluation system;evaluation item;method   
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        发布时间：2021-02-08
      • XU Bin
        Issue 3, Pages: 33-35(2008) DOI: 10.19455/j.mcgy.2008.03.010
        摘要：The author provided a detailed description of a case study which involved problems with wood-based products for home decoration.Wood species identification and the origin of the insects in the wood were the keys to successfully identifying the cause of the problems and to providing a solution to the dispute.The successful story indicated the importance of interdisciplinary research in wood identification and future needs for wood identification research in China.  
        关键词：wood identification;home decoration;case study;responsibility identification   
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        发布时间：2021-02-08
      • HUANG Yan-li
        Issue 3, Pages: 36-37(2008) DOI: 10.19455/j.mcgy.2008.03.011
        摘要：The author analyzed current situation of Malaysian furniture industry,discussed the advantages and challenges of Malaysian furniture industry,and then concluded that Malaysian furniture industry is still very competitive in Chinese market along with economic development in China.  
        关键词：Malaysia;furniture industry;China   
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        发布时间：2021-02-08

        Piactical Techniques

      • JIANG Ming-liang,ZHANG Ying
        Issue 3, Pages: 38-40(2008) DOI: 10.19455/j.mcgy.2008.03.012
        摘要：The leaching rates of copper and triazole（such as tebuconazole and propiconazole） in different preservative formulations were determined according to American Wood Protection Association standard of AWPA E11-97.Copper fixation rate of copper triazole and ACQ which was dispersed in ammonia was higher than that in ethanolamine.For the copper formulations dispersed in ethanolamine,it was interesting to observe that the copper fixation rate at low retention was higher than that at high retention.Copper in the formulations of triazole reduced the leaching rate of tebuconazole and propiconazole.The leaching rate of tebuconazole in ethanol was the highest with 37%.  
        关键词：CuAz;ACQ;tebuconazole;propiconazole;leachability   
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        发布时间：2021-02-08
      • LI Xia-zhen1,REN Hai-qing1,XIE Li-sheng2,XU Ming1
        Issue 3, Pages: 41-43(2008) DOI: 10.19455/j.mcgy.2008.03.013
        摘要：This study focused on enclosing a steam-injection press,to eliminate any steam leakage,to produce low density（0.3 g/cm3） fiberboard.After reviewing this technology from previous studies,the authors designed an orthogonal experiment to optimize the process parameters for making low density fiberboard.The results indicated that when 10% resin content,160 ℃ pressing temperature,10 s steam injection time,and 10 s/mm pressing time were used,the properties of fiberboards met the requirements of national standard GB/T 17567-1999.  
        关键词：enclosing;steam-injection pressing;low density fiberboard;hot-pressing technology   
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        发布时间：2021-02-08

        Practical Techniques

      • ZHAO Tian-yu1,WU Fang-jing2,LEI De-ding1
        Issue 3, Pages: 44-45(2008) DOI: 10.19455/j.mcgy.2008.03.014
        摘要：采用高浓度甲醛不脱水改性UF胶生产技术,并添加两种不同型号的甲醛捕捉剂和复合型固化体系调胶,根据生产条件适当调整生产工艺,生产出质量稳定的F☆☆☆☆级环保刨花板。  
        关键词：刨花板;高浓度甲醛不脱水改性UF胶;甲醛释放量;甲醛捕捉剂   
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