最新刊期
      期 5 ， 2014

        Research & Development

      • GAO Li,WANG Zheng,REN Yi-ping
        Vol. 28, Issue 5, Pages: 5-8(2014) DOI: 10.19455/j.mcgy.2014.05.001
        摘要：Lap joints are necessary for making ultra-long laminated bamboo sliver lumber（LBSL）.Effects of the length and the position of lap joints were analyzed by testing the lumber’s bending and tensile strength.The results showed that the length and the position had significant influence on bending（MOE and MOR）and tensile strength（ts）.The length had no significant effect until it exceeded 10 mm.However,when the joints were at the surface of the lumber there was a negative influence on bending and tensile properties.It was concluded that the length of the joints should be longer than 10 mm and should not be at the surface of the lumber.  
        关键词：laminated bamboo sliver lumber（LBSL）;bamboo curtain;lap joint;bending performance;tensile strength   
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        发布时间：2021-02-08
      • HU Yu-an,ZHU Rong-xian,YU Yang-lun,ZHANG Ya-hui,GAO Peng,YU Wen-ji
        Vol. 28, Issue 5, Pages: 9-12(2014) DOI: 10.19455/j.mcgy.2014.05.003
        摘要：This study investigated the influences of a dyeing treatment on color change and performance of crushed bamboo-mat composites made from Phyflostachys pubescens.Bamboo fibrosis veneers were dyed in three temperature conditions（20,75 and 90°C）and two kinds of dispersion medium（water and alcohol）.It was found that the samples dyed in alcohol at 75°C and in water at 90°C showed higher dye-uptake rates.The dyeing treatment slightly reduced MOR and MOE and improved water resistance of the composite.For better color and mechanical properties,dyeing bamboo fibrosis veneers in alcohol at 75°C was suggested.  
        关键词：crushed bamboo-mat composites;bamboo fibrosis veneer;dyeing;dispersion medium;color difference   
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      • LI Wei-guang,ZHANG Zhan-kuan,ZHANG Kai
        Vol. 28, Issue 5, Pages: 13-15(2014) DOI: 10.19455/j.mcgy.2014.05.004
        摘要：Surface roughness is normally measured by a conventional two-dimensional（2D）contour method which doesn’t accurately reflect the actual situation.Therefore,a threedimensional（3D）surface profile imaging technique was introduced.Experimental results showed that more accurate surface roughness and more realistic surface morphology were obtained using 3D surface profile imaging.  
        关键词：sawing lumber;surface roughness;3D topography;2D contour   
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      • GAO Li-xiang,ZHOU Yong-dong,GAO Rui-qing,LI Xiao-ling
        Vol. 28, Issue 5, Pages: 16-19(2014) DOI: 10.19455/j.mcgy.2014.05.005
        摘要：High temperature drying experiments were conducted on 25 mm-thick Cryptomeria lumber.Also investigated was Cryptomeria heart wood,sapwood and heart-sap-mixed lumber drying rate and drying quality.The results showed that sapwood drying rate was the fastest and that heartwood was the slowest.Flat-sawn heartwood and heart-sap-mixed lumber can meet the Chinese National Standard GB/T 6491-2012 second grade requirements.  
        关键词：Cryptomerialumber;high temperature drying;drying rate;drying quality   
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      • LIU Xiang,GAO Li,ZHANG Shuang-bao,YUAN Ying-liang
        Vol. 28, Issue 5, Pages: 20-23(2014) DOI: 10.19455/j.mcgy.2014.05.006
        摘要：Populus euramevicana veneer strands were used as raw materials to make oriented strand lumber（OSL）.The influence of strand length,stand width,hot-pressing time and board density on physical and mechanical properties was evaluated.The results showed that the density was the most important factor affecting the properties of the OSL and that the properties of the OSL made under optimum processing conditions could far exceed the requirement of OSB/4grade of European Standard EN 300-2006.  
        关键词：Poplar;oriented strand lumber;manufacturing technology   
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        Research Bulletin

      • SHAO Zhu-wei,ZHANG Ming-hui,ZHOU Yun-jie,LI Xin-yu
        Vol. 28, Issue 5, Pages: 24-27(2014) DOI: 10.19455/j.mcgy.2014.05.007
        摘要：To find an easy way to study a curing process for urea-formaldehyde resin,the authors made use of time-domain nuclear magnetic resonance（TD-NMR）to evaluate the process with zinc chloride as the curing agent.The results showed that relaxation time distribution for ureaformaldehyde resin in the solidification process was rapidly formed.The curing reaction of the UF resin occurred as the temperature rose from 100℃to 120℃,and was completed at 140℃.  
        关键词：time-domain nuclear magnetic resonance（TD-NMR）;urea-formaldehyde resin;zinc chloride;curing   
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        发布时间：2021-02-08

        Discussion & Suggestion

      • ZHOU Yong-dong
        Vol. 28, Issue 5, Pages: 28-31(2014) DOI: 10.19455/j.mcgy.2014.05.008
        摘要：The quality of solid wood floors is directly influenced by the quality of the solid wood blanks.Wood resources and sawing and drying of solid wood blanks are analyzed and summarized in this paper.Development trends for solid wood floors are shown and suggestions are provided to improve quality and productivity.  
        关键词：solid wood floor;semi-finished blank;sawing;drying   
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      • YANG Zhong,ZHANG Mao-mao,LV Bin,PANG Xiao-yu
        Vol. 28, Issue 5, Pages: 32-35(2014) DOI: 10.19455/j.mcgy.2014.05.010
        摘要：A method of visible spectroscopy analysis technology was used to evaluate the visual characteristics on the surface of decorative paper in order to explore the feasibility of visible spectroscopy instead of traditional human’s visual assessment and instrument measurement to classify decorative paper.The classification models were established by visible spectroscopy data from six types of decorative paper using the methods of partial least-squares discriminant analysis（PLS-DA）,and the classification accuracy derived from different spectral pretreatment methods were compared.The results showed that the classification accuracy based on raw spectra was 93%～100%.The accuracy using multiplicative scatter correction（MSC）and standard normalized variate（SNV）pretreated spectra was up to 97%～100%.  
        关键词：wood-based panels;decorative paper;visual characteristics;visible spectroscopy;classification   
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      • XIE Xue-xia,LIU Bo,SUN Hua-lin,JIANG Xiao-mei,YIN Ya-fang
        Vol. 28, Issue 5, Pages: 36-40(2014) DOI: 10.19455/j.mcgy.2014.05.011
        摘要：To determine wood machining properties of valuable hardwood species for high valueadded utilization of solid wood products,planning,sanding,shaping,boring,turning and mortising of Cinnamomum camphora,Juglans mandshurica,Schima superba and Liriodendron chinense from foreat plantations in China were evaluated respectively,according to Chinese forestry industrial standard LY/T 2054-2012.The results showed that the comprehensive machining properties of Cinnamomum camphora,Schima superba and Liriodendron chinense were better than that of Juglans mandshurica.Furthermore,wood planning quality of the four selected species decreased as the increase of cutting depth and feed rate.The influence of feed rate on planning quality was greater than that of cutting depth.  
        关键词：plantation;Cinnamomum camphora;Juglans mandshurica;Schima superba;Liriodendron chinense;machining properties   
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        发布时间：2021-02-08

        Piactical Techniques

      • ZHANG De-wen,ZHANG Zhan-kuan,PENG Xiao-rui
        Vol. 28, Issue 5, Pages: 41-43(2014) DOI: 10.19455/j.mcgy.2014.05.013
        摘要：Non-woven fabric reinforced decorative veneers were developed for overlaying on a special shaped surface bonded with poly vinyl acetate emulsion or urea-formaldehyde resin.In order to improve veneer flexibility and transverse tensile strength,the authors made experiments to optimize the production process.Results showed that better flexibility was obtained when poly vinyl acetate emulsion adhesive was used with 30g/m2 resin consumption,115 ℃ hot-pressing temperature,and 150 seconds hot-pressing time thereby causing a 5～8times increase in veneer transverse tensile strength.  
        关键词：decorative veneer;non-woven fabric;flexibility;transverse tensile strength   
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      • SUN Bai-ling,YUAN Jing-li,LIU Jun-liang
        Vol. 28, Issue 5, Pages: 44-47(2014) DOI: 10.19455/j.mcgy.2014.05.014
        摘要：We evaluated the fire retardancy effect on Cryptomeria Fortunei wood treated with melamine-urea-formaldehyde（MUF）resin mixed with boric acid and borax under different concentrations.The results showed that oxygen index,ignition time（TTI）and residue mass all increased and heat release rate（HRR）,total heat release（THR）,CO2 and CO concentration all decreased.Therefore,we concluded that the fire retardancy of the treated samples was much improved.  
        关键词：cryptomeria fortunei;melamine-urea-formaldehyde resin;Boric acid;borax;fire retardancy   
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      • QIN Shao-shan,LI Xiao-wen,LI Jia-ning
        Vol. 28, Issue 5, Pages: 48-50(2014) DOI: 10.19455/j.mcgy.2014.05.015
        摘要：为了改进热处理对木材强度造成损失的不足,并提高木材的抗白蚁蛀蚀能力,先用树脂浸注处理、再进行热处理的方法,对橡胶木进行改性。试验结果表明:与单一热处理相比,浸注-热处理联合改性材的MOE、MOR和硬度明显增加,抗白蚁能力提高。  
        关键词：橡胶木;联合改性;浸注树脂;热处理;力学性能;防白蚁性能   
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      • YANG Yan,LV Jian-xiong,QIU Jian,LUO Bei,QU Juan
        Vol. 28, Issue 5, Pages: 51-54(2014) DOI: 10.19455/j.mcgy.2014.05.016
        摘要：对葱叶状铁木豆、木果缅茄、阿诺古夷苏木和胶漆树四种木材的宏观和微观构造进行观察分析,并与其易混淆的紫檀、花梨等红木类木材进行比较,发现此4种木材除了宏观颜色与红木相似外,其构造与红木木材有非常大的差别,旨为消费者购买相关木制品时识别其种类提供参考。  
        关键词：红木;葱叶状铁木豆;木果缅茄;古夷苏木;胶漆树   
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      • Vol. 28, Issue 5, Pages: 55-56(2014) DOI: 10.19455/j.mcgy.2014.05.019
        摘要：<正>近年来,由于产品质量事故、诚信缺失事件等企业社会责任问题在各行业屡有发生.引起了社会的广泛关注和有关部门的高度重视。是否勇于承担社会责任,已成为衡量企业实力的重要指标。为推动我国林产工业企业的社会责任建设,发挥行业龙头企业的领军作用,引导行业健康发展,在国家林业局及中国林业产业联合会等国家行政主管部门的支持下,依据中国林产工业协会颁布的《中国  
          
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      • Vol. 28, Issue 5, Pages: 57-58(2014) DOI: 10.19455/j.mcgy.2014.05.023
        摘要：<正>近期,意大利木工机械和工具制造商协会（Acimall）,公布了2013年意大利木工机械行业的年度报告和2014年意大利米兰国际木工机械展（XYLEXPO）的相关数据。2013年意大利木工机械行业年度报告2013年意大利木工机械行业年度报告,由Acimall研究与推广办公室撰写,对意大利木工机械行业发展状况进行了总结。2013年意大利木工机械行业产品总产值为15.37亿欧元,同比下降2.1%;出口总额为11.87亿欧元,同比下降3.5%;进口总额为1.43亿欧元,同比增加9.4%。报告对意大利木工机械产品对全球主要  
          
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        Special Report

      • Vol. 28, Issue 5, Pages: 65-66(2014) DOI: 10.19455/j.mcgy.2014.05.024
        摘要：<正>山东济宁宁丰集团,以生产中/高密度纤维板、刨花板为主,年产"宁丰"牌人造板逾百万m3。在十年时间里,宁丰由一家名不见经传的民营企业,一跃成为我国人造板行业的龙头企业,产销规模及经济效益位居行业前列,主要得益于高性价比国产连续压机生产线的成功运行,是我国林产工业行业装备制造商和用户协同创新的成功范例。为了总结经验,探索合作共赢的发展模式,共谋行业发展大计,2014年早春2月,中国林产工业协会组织专家、分支机构负责人及专业媒体一行,赴河南柘域及山东菏泽,对宁丰集团连续压机生产线的运行情况进行现场考察及调研。  
          
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      • Vol. 28, Issue 5, Pages: 67-69(2014) DOI: 10.19455/j.mcgy.2014.05.025
        摘要：<正>随着世界经济和社会的发展,木材作为环境友好的原料和材料,已越来越多地进入人类的生活。我国木材加工技术、生产规模和装备制造的快速发展,以及一大批行业龙头企业的涌现,使中国一跃成为世界木制品第一生产大国和出口大国,承担着世界木材加工厂的角色。然而,世界森林资源分布的不均衡、木材加工技术水平的参差不齐,以及各国林业政策的不同,地球上有限的森林资源并没有最大限度地得到合理利用。因此,国內一些立意高远、实力雄厚的木业企业把目光  
          
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