最新刊期
      期 1 ， 2020

        Research & Development

      • WANG Meng-meng,LIU Le-qun,LIU Zhen-tao,ZHAO Ying,SUN Si-jia,HE Qing-qing
        Vol. 34, Issue 1, Pages: 1-5(2020) DOI: 10.19455/j.mcgy.20200101
        摘要：In order to improve waterproof performance of foamed wall materials made of liquefied bamboo resins,hydrophobic agents were selected to treat foamed wall materials by blending with other reagents during reaction process or spraying on material surfaces.Effects of the hydrophobic agents and their usage on properties of the material samples were evaluated.The results showed that compressive strength and hydrophobic performance of the samples were both improved by blending the hydrophobic agents with other reagents during the reaction process.When 3% of y-aminopropyl triethoxysilane（KH-550） or 5% of y-（2,3-epoxy propoxy） propyl trimethoxysilane（KH-560） were used,the hydrophobicity of the samples reached the hydrophobic level and the compression strength met the requirements of LY/T 2484—2015 General technical requirements of liqufied bamboo foamed composites.When the hydrophobic agents were sprayed on the surfaces of the samples,the hydrophobicity of the samples could reach to super-hydrophobic level with little effect on the compressive strength.  
        关键词：foamed wall material made of liquefied-bamboo resins;modification;hydrophobic agent;hydrophobic coating;contact angle;apparent density;performance;micro structure   
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        发布时间：2022-05-20
      • LUO Shu-pin,GAO Li,WANG Chao,GUO Wen-jing
        Vol. 34, Issue 1, Pages: 6-10(2020) DOI: 10.19455/j.mcgy.20200102
        摘要：In order to manufacture low-density particleboard,poplar and eucalyptus wood particles as well as expanded polystyrene（EPS） foam particles were used to make three-layer particleboard samples with 500 kg/m3 of panel density.EPS foam particles were mixed with core layer wood particle as fillers.The effect of wood species on vertical density profile and physio-mechanical properties of the samples was investigated.Results showed that biggest vertical density difference between the core layer and the face layer was observed when the poplar fine particles were used at the face layers and the eucalyptus coarse particles at the core layer.The physical and mechanical properties could meet the requirements of furniture-use particleboard for dry conditions（Type P2） in GB/T 4897—2015.  
        关键词：low-density particleboard;wood species;expanded polystyrene（EPS） foam;density profile;properties   
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      • YANG Xue-hui,FAN Li-ying,HU Han-zhi,LIU Fu-jian,HU Peng-fei,LIANG Si-hua
        Vol. 34, Issue 1, Pages: 11-14(2020) DOI: 10.19455/j.mcgy.20200103
        摘要：Effects of conditioning equalization treatments on bending strength of wood-based panels were investigated by testing bending properties of medium density fiberboard（MDF） samples and particleboard（PB） samples under varied equalization conditions.Results showed that the bending strength of the samples decreased with increased temperatures and relative humidity（RH）.Either high temperature or high RH had significant effects on the bending properties.Both of low temperature and low RH had different effects on modulus of rupture（MOR） and modulus of elasticity（MOE） of the samples with various thicknesses by one way analysis of variance and t-test analysis.  
        关键词：MDF;PB;MOR;MOE;temperature;RH;conditioning equalization treatments   
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      • SHI Yuan,LYU Wen-hua,WANG Xue-yu,LIU Qiang-qiang
        Vol. 34, Issue 1, Pages: 15-19(2020) DOI: 10.19455/j.mcgy.20200104
        摘要：An orthogonal experiment was conducted to evaluate effects of Acid Red G mass fraction,melamine-urea-formaldehyde resin（MUF） concentration,Na2CO3 mass fraction and curing temperature on physical and mechanical properties of fast grown Chinese Fir wood modified with the above-mentioned compound and process.Results showed that the MUF concentration had a significant influence on wood density,anti-swelling efficacy（ASE）,modulus of elasticity（MOE）,modulus of rupture（MOR）,compressive strength and color fastness.The dye mass fraction had significant influence only on wood color.The Na2CO3 mass fraction significantly affected wood color fastness only.The curing temperature significantly affected only the ASE.Based on a comprehensive evaluation,the optimal process was as follows:30% of MUF concentration,1% of Acid Red G mass fraction,0.5% of Na2CO3 mass fraction and 100℃ of curing temperature.The modified wood samples had excellent physical and mechanical properties with good decorative performance,which are desirable for making solid wood furniture and other solid wood products.  
        关键词：Chinese fir wood;modification for reinforcement and coloring;physical and mechanical properties;color performance;optimal process   
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        发布时间：2022-05-20
      • XU En-guang,LIN Lan-ying,LI Shan-ming,PENG Li-min,ZHOU Yong-dong,FU Feng
        Vol. 34, Issue 1, Pages: 20-24(2020) DOI: 10.19455/j.mcgy.20200105
        摘要：Under a microwave radiation,internal wood temperature could rise rapidly to over 180℃,resulting in water vapor to evaporate.The authors divided the treated wood into 7 levels according to microstructure of the treated wood and the treatment effects into 3 types.Microwave treatment technology could be used in wood drying,puffing,bending and quarantine fields.And the microwave-puffed wood could be used for making high performance modified wood,preserved wood,flame retardant wood,as well as decorative wood materials and high thermal conductivity wood materials.  
        关键词：wood;microwave modification;mechanism;microwave drying;microwave puffing;bending;timber quarantine   
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        发布时间：2022-05-20
      • WANG Xue-yu,REN Hai-qing,GONG Ying-chun,WANG Yu-rong
        Vol. 34, Issue 1, Pages: 43-46(2020) DOI: 10.19455/j.mcgy.20200110
        摘要：The physical properties of native sawtooth oak（Quercus acutissima） and oriental oak（Q.variabilis） timber in China were tested according to relevant Chinese national standards.The results showed that the air dried wood density of the tested timber were high and increased gradually from bark to pith.The dimensional stability in the radial direction presented better than that in the tangential direction,and the dimensional stability of the sapwood was greater than that of the heartwood.The shrinkage and swelling of Q.variabilis wood samples were less than those of Q.acutissima.Therefore,the dimensional stability of Q.variabilis was little bit better than that of Q.acutissima.  
        关键词：sawtooth oak;Oriental oak;density;shrinkage;swelling   
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        发布时间：2022-05-20
      • Vol. 34, Issue 1, Pages: 50(2020)
        摘要：<正>Giardina集团致力于辊筒、喷涂、紫外线及微波干燥系统的自动化生产线和设备的设计、开发等,在涂装机械和系统设计等领域,处于领先地位。2019年12月13-14日,来自世界各地的大约40名代理商和经销商,在意大利Giardina集团总部举行会议,庆祝"Giampiero Mauri创新商业网络中心"正式成立。  
          
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      • Vol. 34, Issue 1, Pages: 54(2020)
        摘要：<正>由德国汉诺威展览公司（Hannover fair USA）、德国展览公司（Deutsche Messe）的子公司,DOMOTEX组织的北美唯一的集贸易展览和会议活动于一体的展会——第二届DOMOTEX USA,将于2020年2月5-7日在美国亚特兰大世界会议中心举行。  
          
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      • Vol. 34, Issue 1, Pages: 55(2020)
        摘要：<正>在"信息社会""知识经济"时代,很多新兴产业迅速发展,带动了全球信息化、网络化,给传统的林业企业组织与管理方式也带来了根本性的影响,林业企业必须在指导思想、主要任务、组织形式、管理体制、运行机制等方面做出重大调整。随着全球经济一体化进程的加快,林业企业要  
          
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      • Vol. 34, Issue 1, Pages: 56(2020)
        摘要：<正>在快节奏的都市生活中,钢筋混凝土建筑占据了主体地位。然而木质材料作为传承了几千年的主要建筑材料,拥有独特的天然美感与纹理,将其应用到建筑设计中,不仅能够增强视觉吸引力,还可以令设计增添温馨的生活气息。尤其在拥有丰富森林与水体资源的加拿大,让建筑内的生活融入湖泊  
          
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      • Vol. 34, Issue 1, Pages: 57(2020)
        摘要：<正>随着我国现代化进程的迅猛发展,我国体育事业的发展亦是生机勃勃,越来越多国人参与其中,但我国的体育基础设施并不完善,人均拥有体育场馆面积仅1m2左右,且绝大多数体育馆设备老化。木地板作为体育馆设施的重要组成部分,是需要升级换代的重点。但国内专业生产体育木地板的  
          
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      • Vol. 34, Issue 1, Pages: 58(2020)
        摘要：<正>苏州作为千百年来人文荟萃的灵秀之地,可谓是"从来江山秀丽,人物奢华",当文人高雅的审美情趣遇到了具有高超艺术表现能力的匠人,历史长河中便有一座座"苏作"瑰宝问世。"苏作"是苏州（包括其周边地区）地域特色鲜明的传统手工艺及其产品的统称。以整理挖掘并  
          
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      • Vol. 34, Issue 1, Pages: 59(2020)
        摘要：<正>水墨山水,文人意趣。中国古代文人多善于绘画,藉此抒发情怀。松竹梅兰是传统绘画中常见题材。当绘画艺术与竹相遇,除了水墨画作之外,也有一部分文人另辟蹊径,就地取材,将各色画作直接雕刻于竹材之上,形成了一脉独特的竹刻艺术。可惜竹刻艺术几千年来偏居艺术界一隅,少见相关论著。为了不让自然、古朴的竹刻艺术在当代世人眼中渐行渐  
          
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        发布时间：2022-05-20

        Review

      • LYU Shao-yi,LIU Mei-hong,PENG Li-min,LI Shan-ming,CHEN Zhi-lin
        Vol. 34, Issue 1, Pages: 25-29(2020) DOI: 10.19455/j.mcgy.20200106
        摘要：The authors reviewed the acoustic characteristics of wood and wooden materials,refreshed their application in musical instruments and acoustic products,such as sound board,fingerboard,wooden speaker box and wooden vibrating diaphragm.They also summarized the requirements of musical instruments and acoustic products for vibration properties of wood materials as well as the current research situations in improving acoustic properties of wood materials,to provide insightful reference to the research and development of wood material’s application in acoustic fields.  
        关键词：wood materials;musical instrument;wooden speaker;acoustic diaphragm;acoustic characteristics   
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        发布时间：2022-05-20
      • ZHAO Zi-yu,REN Hai-qing,YUAN Zhe,RONG Chun-lin,CHEN Yu-chen,HAN Shan-yu,QIANG Ming-li
        Vol. 34, Issue 1, Pages: 30-34(2020) DOI: 10.19455/j.mcgy.20200107
        摘要：Wood truss is one of the main components of modern wood structure,which has excellent bearing capacity,material saving,good economics and fast processing and construction.Taking light parallel-chord wood truss as an example,the authors analyzed the current status of parallel-chord wood truss research in China from the aspects of structural materials,joints and connections,bearing capacity,calculation theory and technical specifications.Suggestions were also given on future research needs of parallel chord wood trusses in China.  
        关键词：timber structure;wooden parallel-chord truss;status and prospect   
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        发布时间：2022-05-20

        Discussion & Suggestion

      • ZHANG Ran,DUAN Xin-fang,LI Xiao-ling,XU Jin-mei,AN Xin
        Vol. 34, Issue 1, Pages: 35-38(2020) DOI: 10.19455/j.mcgy.20200108
        摘要：In order to provide references for development of wood based panels standardization in China,the authors systematically summarized the national standardization framework,national standards,forestry-industrial standards,association standards and enterprise standards,then analyzed the revision work of certain relevant important standards.They also introduced internationalization status of China’s wood based panel standards.Finally suggestions were given for future work in this field.  
        关键词：wood based panels;standardization;situation   
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      • WANG Hong-qiang,HAI Ling-chao,CHEN Man-ying,FANG Zi-wei,HU Han-zhi
        Vol. 34, Issue 1, Pages: 39-42(2020) DOI: 10.19455/j.mcgy.20200109
        摘要：QB/T 2385—2018 was officially implemented on July 1,2018.The authors made a comparative analysis on the main difference between the old and new versions of the standard and also proposed suggestions on implementation of the new version,in order to provide guidelines for production and product quality inspection  
        关键词：dark rare hardwood furniture;standard;difference   
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        发布时间：2022-05-20

        Piactical Techniques

      • LUO Yu-fen,CHEN Song-wu,LIU Xiao-ling,LIN Jia-chun,HE Zhe-hui,YAO Rui-fang
        Vol. 34, Issue 1, Pages: 47-50(2020) DOI: 10.19455/j.mcgy.20200111
        摘要：The Eucalyptus grandis×E.urophylla logs in different diameters were selected and sawed by band saw,multiple blade saw and multiple blade saw combined with band saw,respectively.Yield rate of lumber and work efficiency corresponding to each sawing method were evaluated.The results showed that the band saw method presented the longest working time,but had the highest yield rate of lumber;while the multiple blade saw presented the shortest working time and had the highest working efficiency with the lowest yielding rate of lumber.The large diameter logs showed the highest yielding rate of lumber regardless of what kind of the sawing method was used.  
        关键词：Eucalyptus logs;sawing;log diameter;yield rate of lumber;working efficiency;band saw;multi blade saw   
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