最新刊期
      期 3 ， 2015

        Research & Development

      • CHAI Yu-bo,LIU Jun-liang,SUN Bai-ling,LV Wen-hua
        Vol. 29, Issue 3, Pages: 5-9(2015) DOI: 10.19455/j.mcgy.2015.03.001
        摘要：Three kinds of modification solutions including a mixture of boric acid/borax（BB）,melamine-urea-formaldehyde（MUF）resin and the mixture of MUF/boric acid/borax（MBB）,were prepared and used to impregnate poplar wood.Moisture absorption（MA）,anti-swelling efficiency（ASE）, modulus of elasticity in static bending（MOE）, modulus of rupture（MOR）and combustion performances of the treated and control wood samples were all tested.Results showed that the MA reduced remarkably and the ASE,MOE and MOR increased significantly when the samples were treated with MUF or MBB.Combustion performance of the poplar wood treated with the three modification solutions were all improved to different degrees.Poplar wood treated with MBB was more effective compared with the other two modification treatments.  
        关键词：poplar wood;mixed modifier;melamine-urea-formaldehyde（MUF）resin;boride   
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        发布时间：2021-02-08
      • FANG Jing,ZHANG Wen-fu,LIU Le-qun,WANG Hong-yan
        Vol. 29, Issue 3, Pages: 10-13(2015) DOI: 10.19455/j.mcgy.2015.03.003
        摘要：Liquefied bamboo resin was synthesized with phenol and polyethylene glycol（PEG-400）as a liquefying reagent.Foaming materials were made from the liquefied bamboo resin by adding a surface active agent,curing agent,foaming agent and isocyanate.Effects of mass filling coefficient（MFC）on the structure and properties of the foaming materials were evaluated.The results showed that with increased MFC,compressive strength of the material increased with more uniform cell structure and decreased flame retardancy.However,MFC had little effect on thermal stability of the material.The compressive strength of the foaming material reached 0.15 MPa with a critical oxygen index of 31% when MFC was 2.27,which met the requirement for thermal insulation for exterior wall materials.  
        关键词：foaming material;liquefied bamboo resin;mass filling coefficient（MFC）;compressive strength;thermal stability;flame retardancy   
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        发布时间：2021-02-08
      • XI Li-xia,JIANG Ming-liang,MA Xing-xia
        Vol. 29, Issue 3, Pages: 14-17(2015) DOI: 10.19455/j.mcgy.2015.03.004
        摘要：To develop new types of triazole wood preservatives,decay resistance of hexaconazole,epoxyconazole and triadimenol were tested by laboratory sand block tests.The optimized ratios of triazoles to copper were determined by inhibition zone tests.The results indicated that the suitable ratio of copper/hexaconazole was between 991and 701,copper/epoxyconazole between 1241to 701and copper/triadimenol between 491to 321.When triazole retention was between0.05 0.08kg/m3 and copper triazole retention between 0.8 1.0kg/m3,the mass loss rate of the treated wood was 5% or less.  
        关键词：hexaconazole;epoxyconazole;triadimenol;copper triazoles;complex formulation;decay resistance   
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        发布时间：2021-02-08
      • GONG Ying-chun,REN Hai-qing,TANG Zheng-jie,YIN Zhi-wei,WU Zhang-kang
        Vol. 29, Issue 3, Pages: 18-21(2015) DOI: 10.19455/j.mcgy.2015.03.005
        摘要：Effects of category,usage and main components of flame retardants on smoke toxicity of wood-plastic flooring treated with the selected flame retardants were tested by animal contamination.The results showed that the lowest smoke toxicity of wood/plastic flooring tested was the one treated with flame retardant containing aluminum hydroxide（Al（OH）3）.As more of the super fine aluminum hydroxide was used,the higher was the smoke toxicity safety level.Smoke toxicity safety level of tested samples,made with optimized manufacturing technology developed by the authors,could meet the requirements of quasi security（ZA1）of the Chinese National Standards GB/T 20285-2006《Toxic classification of fire effluents hazard for materials》.  
        关键词：wood/plastic flooring;flame retardant;smoke toxicity;animal contamination;safety level   
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        发布时间：2021-02-08
      • ZHANG Long-fei,NIU er-yan,CHEN Zhi-lin,FU Feng
        Vol. 29, Issue 3, Pages: 22-25(2015) DOI: 10.19455/j.mcgy.2015.03.006
        摘要：Phenolic foam panels overlaid and reinforced with fire-retardant fiberboard or/and nonwoven fabrics were prepared.Mechanical properties and combustion performance of the panels were all tested.The experimental results showed that low surface strength of the phenolic foam panel was much improved when overlaid and reinforced with fire-retardant fiberboard which resulted in a unique nature of wood materials.Furthermore,the compressive strength,flexural strength and impact strength of the reinforced panels met the Industry Standard JC/T 1051-2007 requirement for"Aluminum foil face rigid phenolic foam sandwich panels".  
        关键词：phenolic foam panels;medium density fiberboard;non-woven fabrics;surface reinforcement;mechanical properties;combustion performance   
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        发布时间：2021-02-08

        Discussion & Suggestion

      • DING Tao,CAI Jia-bin,GENG Jun
        Vol. 29, Issue 3, Pages: 26-30(2015) DOI: 10.19455/j.mcgy.2015.03.007
        摘要：The thermally modified timber industry has been well developed in Europe and a relatively matured industrial system has been built.Academic forces,enterprises and governments in Europe have made their own contributions to technology development,product manufacturing,standardization and quality certification toward advancing the thermal modification technology.Finnish Thermowood technology is one of the most successful examples in terms of technology industrialization.In order to develop thermal modification timber industry in China,it is necessary to learn more from the Europe by carrying out more cooperation among enterprises,research organizations and educational organizations and by promoting production standardization and quality certification.  
        关键词：thermally modified timber;Europe;industrialization;standardization   
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        发布时间：2021-02-08
      • ZHANG Rong,YIN Ya-fang,XU Kui-wu,YE Ke-lin
        Vol. 29, Issue 3, Pages: 31-34(2015) DOI: 10.19455/j.mcgy.2015.03.008
        摘要：Wood identification and origin tracking based on DNA is very accurate.It can be used to increase credibility for legal timber verification and for Chain of Custody（CoC）tracking which is universally recognized internationally.However,practical application of DNA technology is still limited due to limitations with both DNA technology and wood itself.The authors suggest increasing both investment and research to establish a public database to improve the use of this technology in the legal timber trade.  
        关键词：DNA technology;DNA barcode;molecule marker;species identification;timber origin   
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        发布时间：2021-02-08
      • JIA Na,LIU Bing,HUA Jun,LIN Xiao-liang
        Vol. 29, Issue 3, Pages: 35-38(2015) DOI: 10.19455/j.mcgy.2015.03.009
        摘要：The authors analyzed the relationship among bark content,defibrator energy consumption and fiber quality based on statistical data obtained from a fiberboard production line.The results showed that defibrator energy consumption decreased and classification value increased at the beginning and then decreased as the ratio of bark to poplar decreased.For the fiberboard used for packaging and flooring,reasonable percentage of bark content was 16%and 14%,respectively,which ensured low production cost and higher fiber quality.  
        关键词：fiberboard;bark content;defibrator energy consumption;classifying value;fiber quality   
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        发布时间：2021-02-08
      • TENG Yu,JIANG Ying,CAO Ping-xiang
        Vol. 29, Issue 3, Pages: 39-42(2015) DOI: 10.19455/j.mcgy.2015.03.010
        摘要：This paper presents a roller coating process of pigmented UV lacquer for medium density fiberboard.This coating process has seven steps including two layers of filler coating,three layers of base coating and two layers of top coating.These coatings provide a fine protective film.  
        关键词：medium density fiberboard;pigmented UV lacquer;roller coating process;equipment configuration   
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        发布时间：2021-02-08

        Piactical Techniques

      • HU La,CHEN Zhi-lin,FU Feng
        Vol. 29, Issue 3, Pages: 43-46(2015) DOI: 10.19455/j.mcgy.2015.03.011
        摘要：Eucalyptus and Poplar veneers,impregnated with a phosphorus-nitrogen-boron fire retardant solution,were used to make five-ply fire-retardant plywood,respectively.Physical,mechanical and fire-retardant properties were investigated.The results showed that bonding strength of both kinds of fire-retardant plywood could meet the Chinese National Standard GB/T9846-2004 requirement for Ⅱ-level plywood.Fire-retardant plywood made with eucalyptus wood showed better modulus of elasticity（MOE）and modulus of rupture（MOR）,better fire-retardant properties,longer time to ignition and lower peak to heat release rate than fire-retardant plywood made with poplar wood.  
        关键词：Eucalyptus;Poplar;fire-retardant plywood;properties;comparison   
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        发布时间：2021-02-08
      • LIU Neng-wen,LV Ze-qun,TANG Zhen-zhong,CAO Chang-kun,DANG Wen-jie,LI Bin
        Vol. 29, Issue 3, Pages: 47-50(2015) DOI: 10.19455/j.mcgy.2015.03.012
        摘要：首先通过百度试验法研究交趾黄檀、奥氏黄檀、非洲崖豆木、安哥拉紫檀、古夷苏木共5种珍贵热带硬阔叶树材的干燥特性,并拟定了5种木材的预试验干燥基准,再通过验证试验对拟定的干燥基准进行修订,得到5种珍贵木材的优化干燥基准。结果表明,采用优化基准干燥5种珍贵木材,其干燥质量均满足GB/T 6491-2012《锯材干燥质量》对干燥质量二级要求。  
        关键词：珍贵热带硬阔叶树材;百度试验;干燥特性;干燥基准   
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      • CHENG Xian-bao,ZHU De-cheng,SUN Bai-ling,FU Yue-jin
        Vol. 29, Issue 3, Pages: 51-54(2015) DOI: 10.19455/j.mcgy.2015.03.013
        摘要：分析了多层实木复合地板在生产及使用过程中地板变形、开裂、胶层剥离的原因,并提出了相应的改进措施,为企业改进多层实木复合地板生产工艺,提高产品质量提供参考。  
        关键词：多层实木复合地板;质量控制;开裂;变形;胶合性能;改进措施   
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      • Vol. 29, Issue 3, Pages: 55-56(2015) DOI: 10.19455/j.mcgy.2015.03.015
        摘要：<正>2015年4月初,应河北鑫鑫木业有限公司之邀,中国林产工业协会组织专家一行赶赴位于石家庄的鑫鑫木业进行生产现场考察和座谈,共商企业发展规划。河北省林业厅、省林产工业协会、石家庄藁城区的领导非常重视此次活动,均莅临会议并致辞,河北省林产品质检中心、省商业联合会、省门业协会的负责人,敦化亚联机械,河北金吉祥、蓝鸟、阔旺、润新、山东百仕达等知名木业、家具、门业公司的企业家以及专业媒体代表出席会议。  
          
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      • Vol. 29, Issue 3, Pages: 58-59(2015) DOI: 10.19455/j.mcgy.2015.03.018
        摘要：<正>由中国林业产业联合会、林业产业诚信联盟主持召开的《中国林业产业信用体系建设规划纲要（2015—2020年）》发布会,2015年3月在京召开。国家发改委、商务部等领导到会并致辞;全国政协常委、人口与资源环境委员会主任、国家林业局原局长、中国林业产业联合会会长贾治邦出席会议。《纲要》全面阐述了总体思路和具体方略。包括:建立对企业有切实约束力的信用评价体系（征信系统）;疏通金融资本接轨小微企业的脉络(大数据系  
          
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