最新刊期
      期 5 ， 2017
      • Vol. 31, Issue 5, Pages: 1-2(2017)
        摘要：<正>中国林产工业协会中国绿色时报社中国林业科学研究院木材工业研究所中国林业机械协会各有关单位:"全国人造板工业发展研讨会"已连续成功举办了15届,成为最具规模与影响的标杆性年度行业盛会。"第十六届全国人造板工业发展研讨会"定于2017年9月21日至23日在山东省临沂市举办。同期举办"第四届世界人造板大会"和"第八届中国临沂国际木业博览会"。  
          
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      • WU Guo-fang,WANG Zi,WANG Li,ZHAO Rong-jun,REN Hai-qing
        Vol. 31, Issue 5, Pages: 5-8(2017) DOI: 10.19455/j.mcgy.20170501
        摘要：Light wood trusses are important structural components in light wood frame construction.Formation and nonlinear behavior of truss plate joints were taken into consideration to develop a finite element （FE） model for the light wood trusses. The FE model was validated by comparing predicted results with testing results and then used to predict structural behavior of light wood frame trusses with other configurations such as load patterns, truss heights and truss formations. The FE model was easy to learn and showed good accuracy. The FE modeling method could contribute to further investigation of structural behavior of light wood trusses.  
        关键词：light wood frame construction;light wood trusses;finite element method;truss plate joint;structural behavior   
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        发布时间：2021-02-08
      • YU Wen-xia,SHENG Zhen-xiang,YUE Qun-fei,LU Shi-wei,QU Guo-fu,ZHANG Hong-jian
        Vol. 31, Issue 5, Pages: 9-12(2017) DOI: 10.19455/j.mcgy.20170502
        摘要：The authors calculated and analyzed different mat pressing response times in continuous presses by a hydraulic servo control valve and an electromagnetic ball valve combined with fixed orifice,respectively. Therefore, suggestions for selecting hydraulic control valves for continuous presses in wood-based panel production lines with different speeds were presented.  
        关键词：continuous press;wood-based panel;servo control valve;electromagnetic ball valve;fixed orifice;response time of mat pressing   
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        发布时间：2021-02-08
      • WEI Ya-nan,YANG Chan,ZHANG Ya-hui,YU Yang-lun,YU Wen-ji,YANG Na
        Vol. 31, Issue 5, Pages: 36-39(2017) DOI: 10.19455/j.mcgy.20170508
        摘要：The authors made scrimber samples with impregnated veneer at different open assembly times （10 d, 30 d, 90 d） after re-drying to evaluate how open assembly time affected the properties of the scrimber samples. The results showed that when the open assembly time was extended, molecular weights of PF resin applied to the veneers were increased. Thickness and width swelling values of the samples increased significantly while water resistance decreased. No significant effects on their mechanical properties were observed.  
        关键词：scrimber;impregnated veneer;open assembly time;molecular weight;properties   
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      • Vol. 31, Issue 5, Pages: 52(2017)
        摘要：<正>近日,国家质检总局公布了浸渍胶膜纸饰面人造板、浸渍纸层压木质地板（强化木地板）、实木地板等三类产品2017年第2批质量监督抽查结果。1)浸渍胶膜纸饰面人造板:依据GB 15102–2006《浸渍胶膜纸饰面人造板》、GB 18580–2001《室内装饰装修材料人造板及其制品中甲醛释放限量》  
          
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        发布时间：2021-02-08

        Research & Development

      • QU Wei,WU Yu-zhang
        Vol. 31, Issue 5, Pages: 13-17(2017) DOI: 10.19455/j.mcgy.20170503
        摘要：A flame retardant amino resin for surface coating of wood materials was developed, including ammonium polyphosphate （APP）, pentaerythritol （PER） and melamine-urea-formaldehyde resin （MUF）,which was applied to medium density fiberboard （MDF） samples. Effects of components and coating weights of the flame retardants amino resins on fire retardant performance of the board samples were evaluated. The results showed that: 1) A charcoal layer was formed when the flame retardant amino resin was heated, resulting in a prolonged ignition time as well as decreased heat release rate （HRR） and total heat release （THR） of the board samples. 2) Flame retardant performance improved when flame retardant usage and coating weights increased. 3) Compared to traditional fire retardant technology, the surface coating flame retardant technology could reduce consumption of the flame retardants by 1/6 and fire growth index （FGI） could be decreased by 94.7%.  
        关键词：medium density fiberboard （MDF）;surface coating;flame retardant amino resin;melamine urea formaldehyde resin （MUF）;coating weight   
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        发布时间：2021-02-08
      • LIN Peng,XU Jian-feng,ZHANG Ming-zhi,LONG Ling
        Vol. 31, Issue 5, Pages: 18-21(2017) DOI: 10.19455/j.mcgy.20170504
        摘要：The authors selected nano-TiO2 and ultraviolet absorbents to modify a UV-curing ink used for printing decorative papers. The ink properties were tested to evaluate effects of the modifiers on the ink.The results showed that after modification by nano-TiO2 or ultraviolet absorbent, the UV ink was stable with reduced average particle sizes and viscosity as well as enhanced absorbance in the ultraviolet region.Therefore, optimum parameters for modification of the UV ink was 1.0% of TiO2 or 1.5% of ultraviolet absorbent.  
        关键词：UV-curing ink;decorative paper;nano-TiO2;ultraviolet absorbent;light-induced discoloration resistance   
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        Discussion & Suggestion

      • ZHANG Fang-wen,ZHANG Ya-hui,YU Wen-ji
        Vol. 31, Issue 5, Pages: 22-26(2017) DOI: 10.19455/j.mcgy.20170505
        摘要：Based on Life Cycle Assessment （LCA）, environmental impacts of oriented strand board （OSB） produced by a Chinese company and a European company were evaluated, respectively. Results showed that the Chinese OSB products consumed more non-renewable energy resources while the European OSB products consumed much cleaner energy resources like natural gases. The CO2 emissions between the two OSB companies were about the same during production. The environmental potential values for acidification, eutrophication and global warming of the Chinese OSB products were higher than those of the European OSB products, but the Chinese OSB products had less impact on ozone depletion and photochemical smog.  
        关键词：Oriented strand board （OSB）;China;Europe;life cycle assessment （LCA）;environmental impacts   
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        发布时间：2021-02-08
      • LI Wei,SONG Xiao-yan,XUE Qi-chao
        Vol. 31, Issue 5, Pages: 27-31(2017) DOI: 10.19455/j.mcgy.20170506
        摘要：Based on an analysis of damage forms of wood-roof structures built in the 1950 s, the authors proposed reinforcing methods for the damaged structures. Finite element analysis was applied to evaluate bearing capacity of the reinforced structures. According to the analyses, weak positions of the structures could be found.  
        关键词：wood-roof structure;building reinforcement;finite element analysis;reliability appraisal   
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        发布时间：2021-02-08
      • WANG Mei,GU Jin,HU Chuan-shuang,YUN Hong,FU Rong,GUAN Li-tao
        Vol. 31, Issue 5, Pages: 32-35(2017) DOI: 10.19455/j.mcgy.20170507
        摘要：A laboratory simulation method was used to evaluate the film whitening of Polyurethane resin paint （PU） and Polyester resin paint （PE） wood furniture lacquer. Impacts of colorant, film thickness, air humidity, veneer moisture content and veneer surface roughness on film whitening were analyzed and discussed. The results showed that whitening was mainly caused by colorant dilution, primer film thickness, air humidity, veneer moisture content and veneer surface roughness.  
        关键词：wood lacquer;veneer-overlaid panels;film whitening;laboratory simulation;PU/PE resin paint   
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        Piactical Techniques

      • LI Bo,ZHANG Zhan-kuan
        Vol. 31, Issue 5, Pages: 40-42(2017) DOI: 10.19455/j.mcgy.20170509
        摘要：Coating efficiency of wooden door samples conducted by normal spraying guns and electrostatic spraying guns were compared. Testing results showed that coating efficiency of the door leaf by manual electrostatic spraying increased from 61.7% to 76.7% compared with the control, and even to84.5% when a ground conductive plate was used on the door back. The coating efficiency of door frame samples by manual electrostatic spraying also increased from 52.7% to 69.7%, compared with the control.  
        关键词：wooden door;manual electrostatic spraying;spray gun;coating efficiency   
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      • HUANG Yi-heng,WANG Wang,YU Gang,CAO Jin-zhen
        Vol. 31, Issue 5, Pages: 43-46(2017) DOI: 10.19455/j.mcgy.20170510
        摘要：In order to investigate effect of caul plate gloss on glossiness of high-gloss laminate flooring,high-gloss laminate floor samples were prepared with caul plates having different gloss levels.Roughnesses and atomic force microscope （AFM） images of the samples were observed. Results showed that the roughness of the samples increased and the gloss decreased as the caul plate gloss decreased;3D-AFM images of the samples indicated that the glosses of the samples were closely related to caul plate gloss. Dents and protrusions on the sample’s surface occurred when caul plates with lower gloss were used and also resulted in a poor gloss surface on the flooring samples.  
        关键词：high-gloss laminate flooring;glossiness;caul plate;roughness;surface morphology   
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      • ZHONG Kai,PENG Chong,LU Jun,LUO Ming-chun,TU Deng-yun,HU Chuan-shuang
        Vol. 31, Issue 5, Pages: 47-50(2017) DOI: 10.19455/j.mcgy.20170511
        摘要：A new kind of engineered wood flooring substrate was developed made from plantation poplar and eucalyptus veneers as face layers and eucalyptus wood strips as core materials. Dimensional stability of the substrate was compared with that of three-layer parquet and multi-layer engineered wood flooring made from poplar and eucalyptus veneers. The results showed that the new substrate had less moisture absorption and swelling rate as well as less warping than the controls. Optimum structure of the new substrate was obtained when the substrate was composed of eucalyptus veneers as the face layer,eucalyptus wood strips as the core layer, and popular veneers as the back layer and edge-glued longitudinally with 2.5 mm×16 mm eucalyptus wood strips.  
        关键词：engineered wood flooring;substrates;dimensional stability;physical and chemical properties   
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