最新刊期
      期 0 ， 2020
      • Pu Anbin Lu Renshu Wang Weihong
        Issue 3, (1997) DOI: 10.19455/j.mcgy.1997.03.008
        摘要：Taking a blockboard production line with capacity 10 000 m 3/a as an example, this paper described features of technological design and equipment selection. In accordance with different lumber quality, two distinct planning techniques. were selected, i.e.two face planning machine was selected for planning straight lumber and planning machine befoe thickening machine was selected for planning warped lumber. A finger jointer was selected and finger jointed strips were used in two sides of blockboard core. These measures could improve the strength of blockboard as well as appearance quality. The glued blockboard core was planned through a wide thickening machine. Gas was used for heat conduction medium of dry kilns, reducing energy consumption by 40%. Thermal conductive oil was used as heat conduction medium of blockboard core composing machine and hot press, reducing energy consumption by 30%. A pulse bag type collector was selected to improve collection effectiveness of sanding dust.  
        关键词：Blockbaord;production line;Technological design   
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        发布时间：2021-03-12
      • Issue 3, (1997)
        摘要：综合信息简讯国家支持企业技术进步的新举措为支持企业技术进步，财政部、国家税务总局就国有、集团工业企业技术进步中，有关财政、税收问题发出通知，内容有：１．企业研究开发新产品、新技术、新工艺所发生的各项费用，包括新产品设计费、研究设备折旧等，不受比例限制...  
          
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      • Issue 3, (1997) DOI: 10.19455/j.mcgy.1997.03.011
        摘要：木质材料燃烧性能检测方法及有关法规木质材料的燃烧与阻燃系列讲座之四刘燕吉检测材料的燃烧性能是研究、应用、开发阻燃技术及阻燃产品的必要程序。建立科学、先进、实用的燃烧性能试验方法标准一直是阻燃技术领域的重要课题之一。我国标准因发布单位级别不同而分成国家...  
          
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        发布时间：2021-03-12
      • Wang Song
        Issue 3, (1997) DOI: 10.19455/j.mcgy.1997.03.009
        摘要：芦苇刨花板无垫板装卸王松ＣａｕｌｅｓＬｏａｄｉｎｇａｎｄｕｎｌｏａｄｉｎｇｓｙｓｔｅｍｆｏｒＲｅｅｄＰａｒｔｉｃｌｅｂｏａｒｄＰｒｏｄｕｃｔｉｏｎＷａｎｇＳｏｎｇ（ＡｎｄａＷｏｏｄ－ｂａｓｅｄＰａｎｅｌＦａｃｔｏｒｙ，ＨｅｉｌｏｎｇｊｉａｎｇＰｒｏｖ...  
          
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        发布时间：2021-03-12
      • Jin Guilin Wang De Yan Xiangji
        Issue 3, (1997) DOI: 10.19455/j.mcgy.1997.03.010
        摘要：中密度纤维板管道施胶工艺金桂林王德闫祥吉ＧｌｕｅＳｐｒｅａｄｉｎｇＴｅｃｈｎｏｌｏｇｙｂｅｆｏｒｅＦｌｕｅ┐ｄｒｙｉｎｇｆｏｒＭｅｄｉｕｍＤｅｎｓｉｔｙＦｉｂｅｒｂｏａｒｄＰｒｏｄｕｃｔｉｏｎＪｉｎＧｕｉｌｉｎＷａｎｇＤｅＹａｎＸｉａｎｇｊｉ（Ｊｉｎ...  
          
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        发布时间：2021-03-12
      • Duan Xinfang Li Jian Liu Yixing
        Issue 3, (1997) DOI: 10.19455/j.mcgy.1997.03.003
        摘要：Chitosan is derived from chitin, a common constituent of crusts of crabs and shrimps as well as of fungal cell walls. It is a natural and renewable polymer without toxic and pollution to human bodies and environment. Therefore it is used in many fields. This paper presented comparative research results between wood surface dyeing effects by pretreatment with chitosan and untreated samples(control). Nine wood species (4 softwoods, 5 hardwoods) and 4 acid dyestuffs were tested. The dyed samples were characterized by the International Commission on Illumination (CIE 1976) L *a *b * color parameters. The surface of the chitosan treated wood samples were coated with acid aqueous solution of chitosan and then dyed with soluble acid dyestuff. The surface of the control samples were dyed directly without pretreatment. The testing results showed that the pretreated wood in same amount of acid red G were well distributed, dark and dense in color, clear to see in wood grain, non color spot macroscopically observed, lightness decreased, color saturation increased, color difference and color hue varied remarkably observed with color measuring instrument. Comparing the pretreated wood with the controls, the surface dyeing effects of the pretreated wood with different acid dyestuffs spread behaved differently, i.e. surface dyeing effects of bright color dyestuffs were better than that of dark ones.  
        关键词：chitosan;wood;Surface dyeing;Acid dyestuffs   
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        发布时间：2021-03-12
      • Issue 3, (1997) DOI: 10.19455/j.mcgy.1997.03.005
        摘要：游离甲醛和人造板释放甲醛（续）马心颜镇ＦｒｅｅＦｏｒｍａｌｄｅｈｙｄｅａｎｄＦｏｒｍａｌｄｅｈｙｄｅＥｍｉｓｉｏｎｆｒｏｍＷｏｏｄＢａｓｅｄＰａｎｅｌｓ（ｃｏｎｔ＇ｄ）ＭａＸｉｎ（ＳｈａｎｇｈａｉＲｅｓｅａｒｃｈＩｎｓｔｉｔｕｔｅｏｆＷｏｏｄＩｎｄｕ...  
          
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        发布时间：2021-03-12
      • Issue 3, (1997) DOI: 10.19455/j.mcgy.1997.03.012
        摘要：连续平压热压机（之二）欧阳琳２连续平压热压机工作原理图１连续平压热压工艺流程Ｆｉｇ．１Ｆｌｏｗｃｈａｒｔｏｆｃｏｎｔｉｎｕｏｕｓｆｌａｔｈｏｔｐｒｅｓｓｉｎｇｔｅｃｈｎｏｌｏｇｙ图１为刨花板生产线铺装工段至连续平压热压工段示意图。物料定量进入铺装机料...  
          
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        发布时间：2021-03-12
      • Issue 3, (1997) DOI: 10.19455/j.mcgy.1997.03.007
        摘要：木材磨削与磨削设备（三）习宝田李黎５宽带砂光机５．１概述宽带砂光机由于磨削幅面大、磨削精度和生产率高、砂带寿命长、易更换等优点，近年来几乎取代了多辊砂光机，广泛用于人造板、胶合成材、地板、家具及木质建筑构件的定厚砂磨、平面磨削、漆膜光整、抛光等。现代...  
          
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        发布时间：2021-03-12
      • Li Li Li Qiling
        Issue 3, (1997) DOI: 10.19455/j.mcgy.1997.03.006
        摘要：According to problems in the current furniture market and furniture manufacturing enterprises, and based on traditional furniture making technology, this paper introduced a new concept of furniture flexible making technology and furniture flexible manufacturing system.  
        关键词：furniture;Market;Flexible manufacture system (FMS)   
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        发布时间：2021-03-12
      • Cheng Qingzheng
        Issue 3, (1997) DOI: 10.19455/j.mcgy.1997.03.004
        摘要：In order to expand application field of particleboard and meet the needs of building structure and automobile industry for high strength materials, this paper studied particleboard reinforced with nylon net, glass fiber cloth, glass fiber net, glass fiber bundle and carbon fiber. The results indicated that glass fiber is one kind of suitable reinforcing material for particleboard. If the bundle of the fiber cloth were too tight, both IB and TS of the particleboard could not fit the Germany Standard DIN 68763 V100.  
        关键词：particleboard;physical and mechanical properties;Nylon net;Glass fiber;carbon fiber   
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        发布时间：2021-03-12
      • Shi Junyou Wang Xijun Jin Xuefeng
        Issue 3, (1997) DOI: 10.19455/j.mcgy.1997.03.002
        摘要：Normally, moisture content of veneer for structural plywood bonded with current PF resin is required to be less than 8%. In this study, PF resin was modified with resorcinol resin by mixed cocondensation.Effects of added amount of resorcinol resin, molar ratio of PF resin, mixture proportion and hot pressing condition on glue viscosity, condensation degree, stability, curing time, and bonding quality were studied. The results showed that moisture content could be increased up to 16 %～18 %,physical and mechanical properties of the plywood conformed with the standard of GB 9846 1～12—88 Manufacturing cost of the plywood could be reduced.  
        关键词：PF resin;Resorcinol formaldehyde resin;modification;High moisture content of veneer;plywood;gluing   
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        发布时间：2021-03-12
      • Yin Suzhou
        Issue 3, (1997) DOI: 10.19455/j.mcgy.1997.03.001
        摘要：Viscosity change of melamine urea formaldehyde glue line was investigated with a thermo mechanical analyzer (TMA) used as a parallel plates rheometer. A small quantity of adhesive was placed between two wood disks of 10 mm in diameter and the initial glue line thickness was about 0.15 to 0.25 mm. During measuring process, the testing model was heated so that its temperature increased linearly with time at a rate of 10 ℃/min. In the meantime a constant force of 0.5 N was applied on the top of model to compress the glue line and some of the adhesive was squeezed out between the wood disks. The experimental results showed that the initial glue line viscosity (30 min at room temperature) was more than 10 4 Pa·s, much higher than that of a liquid resin. The viscosity change of a glue line with temperature and time could be described qualitatively by a dual equation. With the increase of temperature, the glue line viscosity decreased until a minimum viscosity was reached, after which rapid viscosity increase occurred due to the advancement of cure reaction. From the viscosity temperature curves, two important temperatures related to the hot pressing process of wood composites were obtained, i.e. viscosity inflection temperature T c, corresponding to the minimum viscosity, and gel temperatue T gel . The quantity of hardener played an important role in the glue line viscosity change. With 0.5, 1.5 and 3% NH 4Cl, T c were respectively 87, 76 and 71℃. Addition of a filler(starch) could modify rheological behavior of the glue line, which was demonstrated by an increase of the initial glue line viscosity and an augmentation of the viscosity inflection temperature T c. This research indicated that TMA was suitable for modeling hot pressing process and measuring in situ the glue line viscosity change during early stage of cure.  
        关键词：Melamine urea formaldehyde resin;Glue line;Viscosity;TMA   
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