最新刊期
      期 6 ， 2016

        Research & Development

      • LV Shao-yi,FU Feng,CHANG Huan-jun,GUO Li-min,CHEN Zhi-lin
        Vol. 30, Issue 6, Pages: 5-8(2016) DOI: 10.19455/j.mcgy.20160601
        摘要：Flexible wood slices were treated by in-situ polymerization of conducting polymers for developing conductive materials. Two kinds of conductive materials, such as wood slice/PPy and wood slice/PANi, were prepared and their microstructure and electrical properties were evaluated. The results showed that the PPy nanoparticles or PANi nano-rods were attached to the surface of the wood slices. With extending the polymerization time, the mass loading of the conducting polymer and conductivity of the slices increased. Bending angles had little effect on the conductivity of the slices. As a flexible electrode material, it showed stable conductivity with application potentials.  
        关键词：wood-based composite;flexible conductive wood slices;in-situ polymerization;conductivity   
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      • ZHANG Li-fang,LIANG Shan-qing,ZHANG Long-fei,CHEN Zhi-lin
        Vol. 30, Issue 6, Pages: 9-13(2016) DOI: 10.19455/j.mcgy.20160602
        摘要：Flame-retardant medium density fiberboard（MDF） was prepared by inorganic Magnesium-Aluminum layered double hydroxide（Mg Al-LDH） as the flame retardant. The effects of Mg Al-LDH on fire retardant and mechanical properties of the MDF were analyzed and compared with MDF made by melamine phosphate（MP） as the fire retardant. The results showed that the fire retardant and smoke suppression effects were more effective when the Mg Al-LDH levels increased. When the Mg Al-LDH level was 15%, the heat release effect was similar to MDF made with 10% MP but showed superior smoke prevention. The more Mg Al-LDH that was used, the weaker became the mechanical properties of the MDF. However, when 10% Mg Al-LDH was used, the mechanical properties of the MDF still met the GB/T 11718-2009 National Standard requirements for ordinary MDF products.  
        关键词：MgAl-LDH;medium density fiberboard;flame retardant;smoke suppression   
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      • NIU Er-yan,ZHANG Li-fang,LIANG Shan-qing,CHEN Zhi-lin
        Vol. 30, Issue 6, Pages: 14-18(2016) DOI: 10.19455/j.mcgy.20160603
        摘要：A composite board made with fire-retardant medium density fiberboard（FR-MDF） as face layer and foamed cement as core layer was prepared by the authors. The effects of overlayingtechnology and the FR-MDFlayer on mechanical properties of the composite board were evaluated. The results showed that: 1) When density of the core material was 0.38 g/cm3 and polyurethane foam adhesive consumption was 90 g/m2, the bonding strength of the composite board could meet the requirements of DB 21/T 2353-2014; 2) Overlaying with FR-MDF could improve the overall mechanical properties of the board, including edgewise compressive strength, flexural strength and impact strength.  
        关键词：composite board;fire-retardant medium density fiberboard;foamed cement board;fire resistance limit;mechanical properties   
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      • WANG Zhen,QU Wei,WU Yu-zhang
        Vol. 30, Issue 6, Pages: 19-22(2016) DOI: 10.19455/j.mcgy.20160604
        摘要：In order to evaluatethe influence of flame-retardant melamine modified urea formaldehyde resin adhesive（IFR-MUF） on smoke characteristics of plywood, the total smoke production and smoke temperature of a veneer stack, conventionalplywood and flame-retardant plywood were studied under different heat radiation intensities. Results showed that the MUF promoted integrality of char layers, which had negative effects on smoke production in an earlier combustion process, but led to an intense smoke release in a later combustion process. The IFR had effects on smoke production of plywood, which were closely relevant to radiation intensities, and could reduce smoke temperatures significantly.  
        关键词：plywood;MUF;IFR;heat radiation intensities;total smoke production;smoke temperature   
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        Discussion & Suggestion

      • PENG Xiao-rui,ZHANG Zhan-kuan
        Vol. 30, Issue 6, Pages: 23-26(2016) DOI: 10.19455/j.mcgy.20160605
        摘要：The authors summarized manufacturing technologies of flexible decorative veneers based on papers or non-woven fabrics as reinforcing materials. They also introduced a novel plastic-based veneer developed by the authors and the manufacturing technology and the product features. The flexible decorative veneers based on either papers, fabrics or plastic films could be used to make curveddecorative wood products.  
        关键词：flexible decorative veneer;non-woven fabrics;plastic film;manufacturing technology   
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      • LU Jing-zhou
        Vol. 30, Issue 6, Pages: 27-30(2016) DOI: 10.19455/j.mcgy.20160606
        摘要：To provide reference for revising related standards, emission release courses of formaldehyde and total volatile organic compounds（TVOC） from wood-based panels and wooden flooring were tested using an environmental chamber. The results showed that the emission release rates of formaldehyde and TVOC tended to stabilize with conditioning for 72 h. Therefore, it is suggested to use conditioning for 72 h as a requirement for pretreatment to evaluate environmental performance of the samples in the related standards. In addition, emission release rates of formaldehyde and TVOC from the 42 samples were calculated and transferred into predicted formaldehyde and TVOC concentrations for the European Standard Reference Room Method. Finally, the predicted formaldehyde and TVOC concentrations of the samples were compared with requirements of relevant certifications in Europe and USA.  
        关键词：wood-based panel;wooden flooring;formaldehyde;total volatile organic compound（TVOC）;emission rate;standard reference room   
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      • Vol. 30, Issue 6, Pages: 31-34(2016) DOI: 10.19455/j.mcgy.20160607
        摘要：In order to improve properties of fast-growing poplar wood, the authors developed a combined process of sodium silicate solution impregnation and heat treatment to modify the wood. The effects of modulus of sodium silicate and treating process on properties of the modified wood samples were discussed. The results showed that it was the most effective process to use the sodium silicate solution with modulus 3.3 and a heating treatment at 210 ℃ for 2 hours for improving the overall physical and mechanical properties of the wood.  
        关键词：poplar wood;sodium silicate modulus;impregnation;heat treatment;physical and mechanical properties   
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      • ZHANG Ran,ZHANG Hong,WANG Rui,DUAN Xin-fang
        Vol. 30, Issue 6, Pages: 35-38(2016) DOI: 10.19455/j.mcgy.20160608
        摘要：The authors reviewed the current status of the forest-based biomass materials industry and the standard system in China. They also made suggestions on further development of the standardization.  
        关键词：biomass materials;industry;standardization;suggestions   
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      • CHEN Feng-yi,ZHANG Ya-hui,YU Wen-ji
        Vol. 30, Issue 6, Pages: 39-42(2016) DOI: 10.19455/j.mcgy.20160609
        摘要：Eucalyptus scrimber with density of 0.95 g/cm3 was made by cold-pressing and painted with polyurethane. The properties of the original and painted Eucalyptusscrimber samples were tested to evaluate feasibility for application to furniture materials. The results showed that the Eucalyptusscrimber samples had excellent water resistance, mechanical properties and very low formaldehyde emissions. The properties of the painted samples also met the specifications of National Standard GB/T 4893 for surface coatings of furniture.It was suggested that the Eucalyptus scrimber could be used for indoor furniture manufacturing.  
        关键词：eucalyptus;scrimber;physical and mechanical properties;formaldehyde emission;paint film properties   
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      • Vol. 30, Issue 6, Pages: 51(2016)
        摘要：<正>2016年10月19日,由中国林业机械协会、中国林产工业协会、中国绿色时报社、中国林科院木材工业研究所联合主办,中国林业机械协会和安徽中设国际会展有限公司联合承办的第15届全国人造板工业发展研讨会,在安徽合肥盛大召开。吸引了来自人造板产业链上下游的企业、科研、高校及媒体代表500余人参会。围绕"供给侧改革与人造板企业转型升级"的主题,来自中国林科院木材工业研究所、国家林业  
          
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        Piactical Techniques

      • ZHONG Wei,GAO Ya,JI Juan,JIANG Xiao-bing
        Vol. 30, Issue 6, Pages: 43-46(2016) DOI: 10.19455/j.mcgy.20160610
        摘要：为解决三层实木复合地板在高温潮湿环境使用时出现"波浪纹"的问题,对云杉芯板进行热处理,分析芯板热处理工艺对三层实木复合地板性能的影响。结果表明:180℃、2 h是控制地板波浪纹较优的热处理工艺,处理后芯板的颜色接近原色,地板的主要理化性能指标满足GB/T18103-2013《实木复合地板》的要求。  
        关键词：三层实木复合地板;云杉;芯板;热处理;地板波浪纹   
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      • YANG Jie,LIU Yong-ke,CHEN Qing
        Vol. 30, Issue 6, Pages: 47-49(2016) DOI: 10.19455/j.mcgy.20160611
        摘要：Different resin consumptions were used to make melamine-impregnated paper which were then overlaid on medium density fiberboard（MDF） samples. The surface resistances of the MDF samples were tested. The results showed that when the resin consumption of the impregnated paper was between 120% to 140%, all of the properties of the samples tested could meet the requirements of the National Standard GB/T 15102-2006 for surface decorated wood-based panels.  
        关键词：melamine-impregnated paper;resin consumption;medium density fiberboard（MDF）;surface performance   
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