最新刊期
      期 1 ， 2018
      • QIU Hong-bo,HAN Yan-ming,FAN Dong-bin,LI Gai-yun,CHU Fu-xiang
        Vol. 32, Issue 1, Pages: 1-5(2018) DOI: 10.19455/j.mcgy.20180101
        摘要：In this study, maleic anhydride（MA） and glycerin were used as modifiers for treating poplar wood. The effects of maleic anhydride content, reaction temperature and time, as well as esterification temperature and time on the stability of the treated wood were investigated.The results showed that anti-volume swelling efficiency（ASE） of the wood samples reached 91.02% by optimum treatment processes such as 100% maleic anhydride content, below 90 ℃ reaction temperature for 4 hours and 100 ℃ of esterification temperature for 4 hours. Esterification between maleic anhydride with hydroxyl groups in both wood and glycerin was verified by FT-IR analysis and SEM observation.Therefore, it was concluded that the maleic anhydride and glycerol reacted with each other in the cell cavity and formed an esterified substance, resulting in reduced porosity and better dimensional stability of the wood samples.  
        关键词：maleic anhydride;glycerin;poplar wood;esterification reaction;dimensional stability   
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      • ZHANG Li-fang,LIANG Shan-qing,ZHANG Long-fei,JIANG Peng,CHEN Zhi-lin
        Vol. 32, Issue 1, Pages: 6-9(2018) DOI: 10.19455/j.mcgy.20180102
        摘要：In order to improve both fire retardant and mechanical properties of medium density fiberboard（MDF）, the authors prepared a flame retardant composed of magnesium-aluminum layered double hydroxide（MgAl-LDH） and melamine pyrophosphate（MP） having a mass ratio of 1 : 1, and selected MDI resin as the adhesive.The results showed that MOE, MOR and IB were influenced as MDI resin consumption, hot-pressing temperature and hot-pressing time changed. The optimal manufacturing parameters were 160 ℃hot-pressing temperature, 6 minute hot-pressing time and 10% MDI resin consumption. Under these conditions, all the MOE, MOR and IB of the flame-retardant MDF samples met the specifications for furniture grade MDF used in humid conditions according to the National Standard GB/T 11718-2009. The limiting oxygen index（LOI） was 30.3%.  
        关键词：MgAl-LDH;melamine pyrophosphate;medium density fiberboard;manufacturing parameter;mechanical property   
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      • CAO Xin-yu,ZHANG Yu-fei,GUO Xiao-lei
        Vol. 32, Issue 1, Pages: 10-14(2018) DOI: 10.19455/j.mcgy.20180103
        摘要：A vacuum chuck was designed and developed to automatically transport door leaves based on the structural characteristics of the door leaves and the capacity requirements of production processes. A three-dimensional model of the vacuum chuck was established through an overall program design,component structure design, analysis and calculation. A touch screen interface PC was developed for the monitoring and communication system according to control requirements and technical parameters.The chuck could be used to automatically load door leaves and to promote automation of wooden door production.  
        关键词：door leaf;handling;vacuum chuck;transportation machine;structural design;control system   
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        发布时间：2021-02-07
      • LI Bo,ZHANG Zhan-kuan
        Vol. 32, Issue 1, Pages: 15-18(2018) DOI: 10.19455/j.mcgy.20180104
        摘要：An elastic-plastic simulation model for multi-zone plastic compression of a cylindrical surface was built based on ABAQUS nonlinear finite element analysis software in order to analyze both stress field tensioning and the vibration mode of circular saw blades. Simulated stress field tensioning was in good consistence with experimental results obtained by an X ray stress meter. Theoretical analysis and measured tangential stresses in the outer edge of the saw blade all exceeded 100 MPa. Multi-zone plastic compression was proved to be feasible and the simulation model provided a theoretical basis for optimizing pressing processes.  
        关键词：circular saw blade;tensioning;finite element model;stress;vibration mode;natural frequency   
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        发布时间：2021-02-07
      • YIN Meng-ting,ZOU Xian-wu,LV Bin,YANG Fan,FU Yue-jin,ZHOU Qin
        Vol. 32, Issue 1, Pages: 19-24(2018) DOI: 10.19455/j.mcgy.20180105
        摘要：A series of Chinese standards has been formulated for testing formaldehyde emissions from wood-based materials. The authors analyzed sources and types of formaldehyde that existed in wood-based materials. Different testing methods were then used to compare among relevant standards in China, Europe,America, Japan and The International Standardization Organizations（ISO）. The research provides a reference for improving testing and controlling formaldehyde emissions from wood-based materials.  
        关键词：wood-based materials;formaldehyde emissions;determining method;standard   
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        发布时间：2021-02-07
      • ZHOU Xue-liang
        Vol. 32, Issue 1, Pages: 25-27(2018) DOI: 10.19455/j.mcgy.20180106
        摘要：The author analyzed characteristics of a waterborne paint finishing process for assembled solid wood composite doors and presented relevant technological parameters.  
        关键词：solid wood composite door;water based paint;technological parameters   
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        发布时间：2021-02-07
      • ZENG Jie,YU Hai-yong,ZHANG De-dong,YANG Hui,CAI Wei-sen
        Vol. 32, Issue 1, Pages: 28-32(2018) DOI: 10.19455/j.mcgy.20180107
        摘要：Based on life cycle analyses theory, the authors established an algorithm model for calculating carbon emissions from structural building materials used in timber construction and other constructions.The authors then quantitatively analyzed the carbon emissions from the relevant structural materials.The results showed that carbon emissions from timber construction were significantly less than that from steel and concrete. Moreover, carbon emissions from wood varied with different wood species. Among the four species selected for the timber construction, Larix gmelinii timber released minimum carbon emissions with 68 tons of carbon dioxide, and Abies grandis timber released the maximum carbon emissions with 1 175 tons of carbon dioxide.  
        关键词：timber construction;building construction;structural materials;carbon emissions   
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        发布时间：2021-02-07
      • ZHANG Ya-hui,YOU Jia,YANG Chan,YU Wen-ji
        Vol. 32, Issue 1, Pages: 33-35(2018) DOI: 10.19455/j.mcgy.20180108
        摘要：Poplar and larch veneers were used to manufacture wood scrimber samples, respectively.Mechanical properties and dimensional stability of the samples were evaluated by two accelerated aging test standards, like ASTM D 1037-2006 a "Standard Test Methods for Evaluating Properties of Wood-Base Fiber and Particle Panel Materials" and GB/T 17657-2013 "Test Methods for Evaluating the Properties of Wood-based Panels and Surface Decorated Wood-based Panels".Testing results showed that modulus of rupture（MOR）, modulus of elasticity（MOE）, compression strength（CS）, shear strength（SS） and dimensional stability of the samples were all declined, but the MOR,MOE and dimensional stability could still meet the requirements of the Chinese Standard GB/T20241-2006 for structural material and GB/T 30364-2013 for outdoor floor use. Finally, it was found that test conditions of GB/T 17657-2013 were stricter than that of ASTM D 1037-2006 a.  
        关键词：wood scrimber;accelerated aging;durability;mechanical properties;dimensional stability   
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        发布时间：2021-02-07
      • GAO Zhen-hua,ZHANG Bing-han,FAN Bo,LI Jin,LI Ming,GU Ji-you,ZHAO Shi-meng
        Vol. 32, Issue 1, Pages: 36-39(2018) DOI: 10.19455/j.mcgy.20180109
        摘要：A soybean adhesive modified with polyamide（MPA） was developed to make P7 type particleboard. In the same time, liquefied soybean protein, defatted soybean flour and curing agent were all added to improve adhesive spreading and hot-pressing efficiency. The optimal manufacturing parameters were as follows: MPA solution : soybean flour : curing agent = 100 : 28 : 46. The manufacturing parameters with 185 ℃ hot pressing for 250 s were successfully applied in a particleboard production line. Testing results of the 15.5 mm thick particleboards under 2 h water boiling showed that the properties of the particleboard could meet the specifications of P7 type according to Standard GB/T 4897-2015.  
        关键词：soybean adhesive;soybean flour;particleboard;water resistance;manufacturing technology   
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        发布时间：2021-02-07
      • YANG Xia,LIU Yuan,LI Xian-Jun
        Vol. 32, Issue 1, Pages: 40-43(2018) DOI: 10.19455/j.mcgy.20180110
        摘要：Effects of microwave power density, radiation time and initial wood moisture content（MC） on resin removal from Pinus massoniana lumber were studied. The results showed that the resin removal rate increased by increasing the microwave power density and extending the radiation time. As initial wood MC increased, the resin removal rate increased in the beginning and then decreased. The optimal parameters were: microwave power density of 4 000 kW/m3, microwave radiation time of 5 min and initial wood MC of about 80%. The resin removal rate of Pinus massoniana lumber reached 56.24% with no significant difference between inside and outside layer of the lumber samples.  
        关键词：Pinus massoniana;resin removal;microwave power density;microwave radiation time;wood initial moisture content   
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        发布时间：2021-02-07
      • LI Huan,XU Yi-wen,ZHAO Zi-jian,HE Zheng-bin,YI Song-lin
        Vol. 32, Issue 1, Pages: 44-47(2018) DOI: 10.19455/j.mcgy.20180111
        摘要：Eucalyptus wood samples were treated by ultrasonic and steaming, respectively. The drying rate of the wood samples, before and after pretreatment, were compared and analyzed. The results showed that both ultrasonic and steam pretreatment could be used to speed up drying rate, which were significantly improved by increasing the ultrasonic frequency and/or raising the steaming temperature. Effect of steaming pretreatment on the drying rate and drying quality for the Eucalyptus wood samples was better than that of ultrasonic pretreatment.  
        关键词：Eucalyptus wood;ultrasonic pretreatment;steam pretreatment;drying rates   
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      • Vol. 32, Issue 1, Pages: 52(2018)
        摘要：<正>由中国林科院木材工业研究所主持承担的,林业公益性行业科研专项重大项目"实木家具用低质材提质加工技术研究与示范"2017年10月,通过了国家林业局科技司组织的验收。该项目于2014年启动,由中国林科院木材所、北京林业大学、南京林业大学以及宜华生活科技股份有限公司、徐州中原木业有限公司共同完成。项目构建了由杨木材质改良、无醛胶接、产品设计等多个工艺环节组成的杨木低质材提质加工制造技术  
          
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      • Vol. 32, Issue 1, Pages: 53-54(2018)
        摘要：<正>进入2017年四季度以来,按照国家木竹产业技术创新战略联盟年度工作计划和有关联盟成员企业的要求,联盟副理事长叶克林带领中国林科院木材工业研究所、南京林业大学以及东北林业大学等单位的专家,分赴广东和浙江等地,先后走访了索菲亚、大自然、巴洛克、世友和久盛等联盟成员企业。专家组一行参观了企业的展室、生产车间和实验室,与企业领导、中高层管理人员和技术骨干就木竹产业发展态势、热点问题和企业自身特别关注  
          
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      • Vol. 32, Issue 1, Pages: 53-54(2018)
        摘要：<正>进入2017年四季度以来,按照国家木竹产业技术创新战略联盟年度工作计划和有关联盟成员企业的要求,联盟副理事长叶克林带领中国林科院木材工业研究所、南京林业大学以及东北林业大学等单位的专家,分赴广东和浙江等地,先后走访了索菲亚、大自然、巴洛克、世友和久盛等联盟成员企业。专家组一行参观了企业的展室、生产车间和实验室,与企业领导、中高层管理人员和技术骨干就木竹产业发展态势、热点问题和企业自身特别关注  
          
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      • Vol. 32, Issue 1, Pages: 54-55(2018)
        摘要：<正>2017年12月1日,第四届中国林产品质量与标准化研讨会暨中国镇江（新民洲）进口木材加工利用研讨会在江苏镇江圆满召开。会议由全国人造板标准化技术委员会、全国木材标准化技术委员会、全国林业生物质材料标准化技术委员会、中国林科院木材工业研究所和镇江市京口区人民政府联合主办,来自全国科研、高校、质检机构以及木质林产品相关企业代表近200人参会。  
          
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      • Vol. 32, Issue 1, Pages: 55-56(2018)
        摘要：<正>为展现近年来木材保护技术的发展,及对木质材料性能、功能改逬的增值效应,以"创新驱动发展融合转型升级"为主题的第十届全国木材保护学术研讨会,2017年11月在广州举行。科研、高校、质检机构的专家学者、业内领军企业代表齐聚一堂,分析行业面临的挑战和机遇,明确我国木材保护行业未来的发展方向。聚焦木材防腐、防霉、阻燃、改性等技术领域,主题报告呈现几大特点:  
          
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      • Vol. 32, Issue 1, Pages: 56-57(2018)
        摘要：<正>以"聆听、创新、共发展"为主题的宁丰人造板集团客户交流大会2017年11月在山东济宁盛大召开,来自行业的知名专家、地方领导、地方协会/商会、质检机构、合作伙伴、下游用户、专业媒体代表200余人出席盛会。宁丰人造板集团董事长李连平致欢迎辞,回顾了宁丰的发展历程,分享了创业的体会,表达了宁丰"互通互融为初衷,共生共赢为目标"、聆听行业声音,协同创新发展的意愿。山东省已连续七年位居我国人造板产量之首,  
          
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      • Vol. 32, Issue 1, Pages: 61-62(2018) DOI: 10.19455/j.mcgy.20180112
        摘要：<正>木材供需矛盾是室内装修及家具等木制品行业的突出问题。每年我国仅木制品行业对木材的需求量超过1亿m3。然而,目前我国对进口木材的依存度已接近50%,超过了警戒线。随着世界范围内对环境保护越来越重视,进口优质木材将会越来越少。我国有丰富的人工林资源,科学利用我国丰富的人工林木材,开发低密度木材加工利用新技术,以人工林木材资源代替优质珍贵木材资源,是解决  
          
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