最新刊期
      期 0 ， 2020
      • WANG Wei-hong,ZHANG Xian-quan,LI Shuang
        Issue 5, Pages: 1-3(2005) DOI: 10.19455/j.mcgy.2005.05.001
        摘要：This article introduces soybean-based adhesive focusing on its modification and utilization in agri-composite processing. Chemical agents were used to change the molecular protein structure which improved adhesive bonding strength and water-resistance. Soybean-based adhesives have the potential for use in the manufacture of agri-fiber composites and are environmentally friendly.  
        关键词：soybean-based adhesive;modification;strength;agri-fiber board   
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        发布时间：2021-02-08
      • LIN Li-min,TANG Wei,WANG Hou-jun,XU Lan-ying,ZHANG Chang-wu
        Issue 5, Pages: 4-6(2005) DOI: 10.19455/j.mcgy.2005.05.002
        摘要：Test devices, conditions and methods for nail-holding performance testing under lateral and vertical drawn loads for sheathing panels in light frame construction were introduced. The performance of plantation grown Chinese Larch （Larix gmelini） plywood, which could be used as wall, roof and flooring panels in light frame construction, was also studied. It was found that the Larch plywood, with the same thickness as foreign plywood products, had superior performance with nail-holding power under both lateral and vertical drawn loads as compared with the requirements for the related standards.  
        关键词：light frame construction;Larch plywood;sheathing;nail-holding performance   
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        发布时间：2021-02-08
      • WANG Xiao-qing~1,GUO Li~2,LIU Jun-liang~1,ZHANG Shuang-bao~3
        Issue 5, Pages: 7-9(2005) DOI: 10.19455/j.mcgy.2005.05.003
        摘要：Strengthened bamboo/wood composite laminated veneer lumber （LVL） was manufactured using poplar （Populus nigra） veneer and bamboo curtains as raw materials, impregnated with modified water-soluble PF resin. The effects of the impregnating process, assembly patterns, and hot pressing parameters on properties of the bamboo/wood composite LVL were explored. The results showed that MOE and MOR of the composite LVL could meet or surpass the relevant requirements of JAS standards. They also exhibited rather desirable dimensional stability with TS 2.4%. Veneer thickness, PF resin concentration, as well as compression ratio, all had significant influences on MOE and MOR. Assembly patterns were found to have a major effect on MOR. Furthermore, there were complicated factors associated with TS of the composite.  
        关键词：veneer;bamboo curtain;PF resin;Laminated veneer lumber （LVL）   
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        发布时间：2021-02-08
      • ZHENG Zhi-feng,ZHANG Hong-jian,WEN Ming-ming,TANG Rong-yan,YUAN Yong-sheng
        Issue 5, Pages: 10-12(2005) DOI: 10.19455/j.mcgy.2005.05.004
        摘要：A series of experiments on determination of manufacturing technology for bamboo-based waferboard bonded with powdered phenol-formaldehyde （PF） resin were conducted by the authors. The optimum parameters obtained though the experiments were as follows: mat compression ratio at 1∶1.4 （board density 0.86 g/cm3 ）, glue consumption of 3.5%, wafer moisture content 12% after resin application, and hot pressing at （165±5）℃ and 8.75 MPa, with closing speed at 12.5 mm/s, and pressing time at 1.35～1.45 min/mm. Waferboard made under the above conditions have excellent properties equal or even superior to the requirements of Canadian Standard CAN 3—O437.0—M85.  
        关键词：bamboo-based waferboard;powdered phenol-formaldehyde resin;moisture content;Adhesive consumption   
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        发布时间：2021-02-08
      • SHI Jun-you
        Issue 5, Pages: 13-16(2005) DOI: 10.19455/j.mcgy.2005.05.005
        摘要：Generally, moisture content of veneer for plywood bonded with conventional UF resin is required to be less than 8%. In this study, UF resin was modified by copolymerization with semi-esterified corn starch. Effects of amount of semi-esterified corn starch, molar ratio of UF resin, mixture proportion and hot-pressing parameters on glue properties, such as viscosity, stability, curing time and bonding quality, were investigated. The results showed that when moisture content was increased to 16%～18%, physical and mechanical properties of the plywood conformed with the standard of GB/T 9846.1～12-88 and manufacturing cost of the plywood could be reduced.  
        关键词：corn starch;esterification;UF resin;high moisture content veneer;gluing   
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        发布时间：2021-02-08
      • WANG Guo-zhu~1,ZHOU Hai-bin~2,LI Wen-bin~3,SA Chao~3
        Issue 5, Pages: 17-19(2005) DOI: 10.19455/j.mcgy.2005.05.006
        摘要：This paper first defined gray morphology filtering methods based on mathematical morphology, followed with examples of a wood defect image treated before and after open, as well as closed, filtering treatments. By observing the sectional gray distribution of the wood defect image, the effects of the filtering treatments were determined. Results found that gray morphology filtering could effectively remove noise in wood defect images, improve image vision and heighten accuracy for edge detection. The results verified the feasibility of applying gray morphology filtering to treat wood defect images.  
        关键词：wood defect;image processing;morphology filtering;structuring element   
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        发布时间：2021-02-08
      • LIU Xian-miao~1,FU Feng~1,HUA Yu-kun~2
        Issue 5, Pages: 20-22(2005) DOI: 10.19455/j.mcgy.2005.05.007
        摘要：Some electric materials such as carbon or graphite powder were added to urea-formaldehyde resin to make plywood to study its electromagnetic shielding effectiveness （ESE）. Results showed that the smaller the granularity that the electric element was, the better ESE the plywood exhibited. The highest ESE value attained was 22 dB. However, the authors proposed that the mechanism and quantified relation between the ESE of composite plywood and the addition of electric material should be further researched.  
        关键词：Poplar;plywood;electric element;electromagnetic shielding effectiveness（ESE）   
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        发布时间：2021-02-08
      • XING Jia-qi
        Issue 5, Pages: 23-24(2005) DOI: 10.19455/j.mcgy.2005.05.008
        摘要：A laboratory inhibition test was conducted to evaluate the abilities of 4 kinds of preservatives against 4 dominant moulds （Penicillium oxalicum, Aspergillus japonicus, Lasiodiplodia theobromae and Mucro spp.） that were isolated from 2 common species of rattan （Calamus tetradactylus and C. simplicifolius） in China. Results showed that among those preservatives the author selected, DDAC had the most effective protection against the isolates. When the concentration was 2%, the inhibition index for all the isolates was above 93.  
        关键词：Calamus tetradactylus;Calamus simplicifolius;dominant moulds;isolation;laboratory inhibition   
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        发布时间：2021-02-08
      • CHENG Fang,ZHOU Yu-cheng,YANG Jian-hua,LI Xiao-qun,XIAO Tian-ji
        Issue 5, Pages: 25-27(2005) DOI: 10.19455/j.mcgy.2005.05.009
        摘要：The background and significance of the standard 1 m3 climate chamber for determination of formaldehyde emission is presented. Also, current and potential applications for a climate chamber, in both China and abroad, are analyzed. To help users correctly comprehend the standard and promote its application, the authors also present the basic principles the Chinese professionals used to establish the standard, and give recommendations for technical parameters for the device.  
        关键词：standard;formaldehyde emission;climate chamber;testing   
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        发布时间：2021-02-08
      • TANG Cai-yun~1,SHEN Li-juan~2
        Issue 5, Pages: 28-30(2005) DOI: 10.19455/j.mcgy.2005.05.010
        摘要：This paper discusses the humanistic characters of Nordic style furniture from the aspects of material choice, human engineering, attention to organic and popular elements, combination of traditional culture and modern ideas, individuation, etc. It is expected that this will provide a reference for Chinese modern furniture designers.  
        关键词：Nordic style furniture;humanization;design style   
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        发布时间：2021-02-08
      • TANG Zhong-rong
        Issue 5, Pages: 31-33(2005) DOI: 10.19455/j.mcgy.2005.05.011
        摘要：This paper first presents a practical hotpressing curve from an imported production line for 16 mm particleboard, and then it reports a laboratory test for evaluating the influences of density and moisture content factors on the internal forces of mat made under the same conditions as the actual production. By comparing the laboratory results with the imported hot-pressing technology, suggestions are made for designing a particleboard hot-pressing curve.  
        关键词：particleboard;single-opening press;mat internal force;hot pressing curve   
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        发布时间：2021-02-08
      • ZHOU Yu-cheng,ZHAO Hui,CHENG Fang
        Issue 5, Pages: 34-37(2005) DOI: 10.19455/j.mcgy.2005.05.012
        摘要：According to the working conditions and requirements of wood industry enterprises, the authors developed a set of Office Automation System based on Lotus Domino/Notes. In this article, the system function structure, network and information environment are presented. It also stressed security working/designing principle of this Office Automation System.  
        关键词：office automation （OA）;Lotus Dmino/Notes;system design;security   
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        发布时间：2021-02-08
      • DENG Shao-ping
        Issue 5, Pages: 38-40(2005) DOI: 10.19455/j.mcgy.2005.05.013
        摘要：Copper agents, boride and bromo geramine were selected and mixed together to formulate a compound preservative that was added to an acid dyeing solution to treat bamboo. The goal was to simultaneously improve the appearance and antimold property of bamboo. The formula of the compound agent was studied though two orthogonal experiments. Bamboo treated by the compound agent was compared with that treated only by a dyeing solution with respect to chroma and antimold performance. Results showed that the compound agent had no influence on the bamboo chroma, whereas it could significantly improve the antimold ability of bamboo.  
        关键词：bamboo;dyeing;antimould effect;Antimould agent;chroma index   
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        发布时间：2021-02-08
      • CHEN Zu-jian~1,JIANG Song-lin~2,SHI Yan-ping~2,TANG Kai-jun~3
        Issue 5, Pages: 41-43(2005) DOI: 10.19455/j.mcgy.2005.05.014
        摘要：Furniture made with combined bamboo and wood is a relatively new product on the market. Its decorative design and function are quite different from traditional furniture. This article discusses the decorative techniques for designing bamboo-wood furniture, combining the function of wood with the decorative characteristics of bamboo.  
        关键词：bamboo;wood;furniture;decorative technique   
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        发布时间：2021-02-08
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