最新刊期
      期 2 ， 2019

        Research & Development

      • XU Kang,ZHANG Jia-zu,LI Qin,YUAN Shao-fei,LU Liu,ZHANG Jian,WANG Hong-yan
        Vol. 33, Issue 2, Pages: 1-5(2019) DOI: 10.19455/j.mcgy.20190201
        摘要：Influence of drying temperature and relative humidity（RH） on drying rate and coating film properties of waterborne polyurethane wood lacquers were explored.The results showed that surface and hard drying time of the base-coat first finishing（BI）, the top-coat first finishing（SI） and the top-coat secondary finishing（SII） all reduced gradually with temperature increase,and time interval of the surface and the hard drying time between SI and SII became short. The surface and hard drying time of the BI increased smoothly with RH increase. The surface and hard drying time of the SI and SII elongated when RH was high. No obvious differences were found of the hardness and adhesion of the coating films under different drying conditions. Abrasion resistance of the coating films decreased with RH increase.  
        关键词：waterborne wood coating;surface drying time;hard drying time;properties of coating film;base-coat;top-coat   
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        发布时间：2021-02-07
      • HUANG Rong-feng,HUANG Qiong-tao,HUANG Yan-hui,CAI Qi,LIU Zi-huan
        Vol. 33, Issue 2, Pages: 6-10(2019) DOI: 10.19455/j.mcgy.20190202
        摘要：In this study, taun（Pometia spp.） and birch（Betula spp.） wood were compressed by 2-3 mm of thickness and treated with pressurized steam for compression fixing. It was found that surface density of the two wood samples increased by at least 0.15 g/cm3 with unchanged densities in inner parts of the wood samples. After being processed into wood floors, dimensional change of the wood floor samples was at least 50% lower than the requirement of the National Standard GB/T 35913-2018,and thickness recovery of taun and birch wood floor samples was only 0.04 mm and 0.13 mm respectively, that proved effective compression fixation of the pressurized steam treatment.  
        关键词：solid wood floor substrate;light surface compression;pressurized steam treatment;dimension stability;deformation recovery   
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        发布时间：2021-02-07
      • CUI Zhong-wen,ZHOU Xi-he,ZHOU Han-dong,SUN Qin-jie,LIU Hai-liang,LI Hui-ping
        Vol. 33, Issue 2, Pages: 11-15(2019) DOI: 10.19455/j.mcgy.20190203
        摘要：Poplar（Populus spp.） wood is widely used in wood processing industry in China. Fire and explosion hazards caused by wood dusts were paid high attention in recent years. Minimum ignition temperature of dust cloud（MITC） and minimum ignition temperature of dust layer（MITL） are two very important factors in production safety. In this study, poplar wood dusts in glulam manufacturing were collected for evaluation of MITC and MITL of the poplar wood.The results showed that: 1) the MITC decreased first and then increased with increase of dust concentration（from 227 g/m3 to 2 273 g/m3） at 8% of moisture content, and increased with increase of dust particle sizes（from 48 μu to 200 μm）. 2) The MITL was affected by moisture content of dust particles and dust layer thickness with little effect by dust particle sizes. 3) the MITC and MITL of poplar wood dusts were 415 ℃ and 260 ℃, separately.  
        关键词：Poplar deltoids;wood dust;dust cloud;dust layer;minimum ignition temperature（MIT）   
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        发布时间：2021-02-07
      • LIU Bo,WU Rui-dong,LU Yun,ZHANG Mao-mao,JIANG Xiao-mei,YIN Ya-fang
        Vol. 33, Issue 2, Pages: 16-19(2019) DOI: 10.19455/j.mcgy.20190204
        摘要：To optimize detection conditions of wood fluorescence properties of Pterocarpus species,influence of extraction conditions, including extract agents, extraction methods, time, temperature, and pH values on wood fluorescence properties were studied. According to requirements of extraction conditions of standard fluorescence detection process, extraction conditions for fluorescence detection of Pterocarpus species were determined taking into consideration of simplicity, convenience, high stability and repeatability. Evaluation methods of fluorescence color and extractive solution color were also proposed.  
        关键词：Pterocarpus species;wood fluorescence properties;detection;extraction conditions   
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        发布时间：2021-02-07

        Discussion & Suggestion

      • XIONG Xian-qing,LIU Hui,PANG Xiao-ren
        Vol. 33, Issue 2, Pages: 20-24(2019) DOI: 10.19455/j.mcgy.20190205
        摘要：This paper presented theoretical principles and operational configuration of flexible manufacturing system（FMS）. Applications of the FMS platform in furniture industry were explored based on feasibility and necessary study results. Three key elements of the FMS were further discussed in detail, including standardized product design and process regulations, modularized flexible manufacturing system, and dynamic information management and control. Working process of the FMS model was also explained for reference to furniture industries in China.  
        关键词：mass customization furniture;flexible manufacturing system（FMS）;standardize products and processes;modular production;information control   
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        发布时间：2021-02-07
      • WANG Hai-jie,LI Meng-meng,GUAN Er-qi,BIAN Ke
        Vol. 33, Issue 2, Pages: 25-29(2019) DOI: 10.19455/j.mcgy.20190206
        摘要：Soybean protein adhesives are green and environmentally-friendly, which has a broad application prospect in wood-based panel manufacturing. However, strength and water resistance of the adhesives should further improve. In this paper, principles and methods of soybean protein modification technologies and application of the adhesives in wood-based panel manufacturing were reviewed and summarized. Existing problems and suggestions for future research and development were presented.  
        关键词：soybean protein;modification technology;adhesive;wood-based panel   
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        发布时间：2021-02-07
      • ZHANG Xiao-feng,SUN You-fu,YANG Ru-yuan
        Vol. 33, Issue 2, Pages: 30-34(2019) DOI: 10.19455/j.mcgy.20190207
        摘要：Optimizing thermal performance of building walls is the key to save energy and to meet indoor thermal comfort demands. The authors reviewed current situation of domestic energy-saving renovations as well as research and development of thermal insulation techniques, like wooden exterior siding panels and wooden frame walls. Prefabricated wooden exterior siding panels were designed with integrated characteristics of energy saving, environmentally consciousness, fire proof and aesthetics. Thermal performance and costs of the panels was analyzed. The panels were featured with energy conservation and could meet the requirements of sustainable development in potential market.  
        关键词：prefabricated;wooden exterior siding panels;building reconstruction;energy saving   
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        发布时间：2021-02-07
      • Vol. 33, Issue 2, Pages: 35-38(2019) DOI: 10.19455/j.mcgy.20190208
        摘要：Samples of laminate floors made in China in Residential grade Ⅱ, Residential grade I and Commercial grade by GB/T 18102-2007 were tested according to European standard EN 13329: 2016. The test results showed that physical and chemical properties of the Residential and Commercial grade laminate floors could all meet the requirements of Commercial Moderate and Commercial Heavy grades in EN 13329: 2016. It is suggested that when revising Chinese national standards of laminate floors, it take consideration of technical requirements in relevant European standard of laminated floors.  
        关键词：laminate floors;comparative tests;Chinese national standards;European standards;residential grade;commercial grade   
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        发布时间：2021-02-07
      • FU He-long,WANG Zhong-ming,MA Wen-jun,FAN Sheng-ming
        Vol. 33, Issue 2, Pages: 39-43(2019) DOI: 10.19455/j.mcgy.20190209
        摘要：Global patent literatures of wood-plastic composites were collected. Global trend, regional characteristics, applicants’ and inventors’ status, and key technologies in these patents were analyzed with quantitative analysis, qualitative investigation and expert consultation, in order to reveal development trend of wood-plastic composites industry. Patenting activities between China and the other countries were compared. Suggestions on technology innovation and patent strategy in this field were provided for reference of future research and development.  
        关键词：wood-plastic composites;patent;analysis   
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        发布时间：2021-02-07
      • WU Yan-hua,JIA Ru,REN Hai-qing,ZHOU Yong-dong,WU Zhang-kang,WANG Yu-rong
        Vol. 33, Issue 2, Pages: 44-47(2019) DOI: 10.19455/j.mcgy.20190210
        摘要：In order to improve utilization of imported wood, wood properties of imported Swietenia macrophylla wood which was widely used at in China was tested and evaluated according to relevant Chinese national standards.The results showed that: 1) air-dry density grade of the wood was classified as medium with smaller differential shrinkage and better dimensional stability in dry shrinkage. 2) comprehensive strength evaluation grade of the wood was classified as low with high shearing-strength parallel to grain, big hardness, medium bending strength but poor bending modulus of elasticity and poor impact toughness.Therefore, it was suggested that characteristics of the wood properties should be fully considered to make better use of the wood.  
        关键词：imported wood;Swietenia macrophylla;physical and mechanical properties   
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        发布时间：2021-02-07
      • WU Yan-hua,SUN Hai-yan,REN Hai-qing,ZHOU Yong-dong,WU Zhang-kang,WANG Yu-rong
        Vol. 33, Issue 2, Pages: 48-50(2019) DOI: 10.19455/j.mcgy.20190211
        摘要：Physical and mechanical properties of Pinus radiata wood imported from New Zealand were tested and evaluated according to relevant Chinese national standards.The test results showed that air-dry density of the wood samples was low, shrinkage rate and wet expansion ratio in radial direction of the wood samples were all less than that in tangential direction,resulting in better radial dimensional stability. Cross hardness, radial hardness and tangential hardness of the wood samples ranked the best, the second and the worst, respectively. Bending strength fell in medium grade, and bending modulus of elasticity, impact toughness, shearing-strength and compressive strength parallel to grain were all in low grade. Therefore, it was suggested that if the wood be better processed and utilized, the characteristics of Pinus radiata wood should be considered.  
        关键词：imported wood;Pinus radiata;physical and mechanical properties   
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      • Vol. 33, Issue 2, Pages: 55-56(2019)
        摘要：<正>2019年1月,圣象集团有限公司研发的"耐磨高硬度水性涂料实木复合地板"通过了中国林产工业协会组织的新产品鉴定。该产品使用快干高性能水性光固化（UV）木器涂料进行表面涂饰,采用20～60 HS硬度的胶辊辊涂,底漆涂布量15～50g/m2,面漆涂布量4～10g/m2,通  
          
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      • Vol. 33, Issue 2, Pages: 56(2019)
        摘要：<正>2019年3月1日,中国林产工业协会木材保护与改性产业分会筹备组工作会议在北京召开。来自国家林业和草原局、中国林产工业协会、中国林科院木材工业研究所及江西美隆、中国优材集团、上海丰华米昂、广东林科院森工所、四川恒希木业等分会副理事长单位的代表到会。我国现有木材防腐和改性企业约1 000家,防腐木年产量约600万m3,行业规模不容小觑。合格的  
          
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        Piactical Techniques

      • WEI Jin-guang,RAO Fei,ZHANG Ya-hui,LI Chang-gui,YU Wen-ji
        Vol. 33, Issue 2, Pages: 51-54(2019) DOI: 10.19455/j.mcgy.20190212
        摘要：Pinus radiata and Populus tomentosa veneers were used to make scrimbers, respectively.Effects of veneer crushing on performance of the scrimbers were investigated. The results showed that the pine veneers had better crushing effects than the poplar veneers under same crushing processes, and the scrimber made of Pinus radiata veneers showed higher physical and mechanical properties than those made of Populus tomentosa veneers. It was suggested that veneer crushing processes should be further studied based on different wood species in order to meet performance requirement in application.  
        关键词：Pinus radiata;Populus tomentosa;crushed veneers;scrimber;water resistance;mechanical properties   
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