最新刊期
      期 0 ， 2020
      • Ye Kelin Wang Kai
        Issue 2, (1997) DOI: 10.19455/j.mcgy.1997.02.007
        摘要：This paper briefly reviewed the history of MDF and the current "MDF development explosion" in China, aiming at increasing awareness of relevant authorities and the industry itself with the hope that the MDF industry in China could be developed in a healthy way with good order. Measurements and actions which should be taken were recommended based on analyses of 6 issues relevant to the MDF industry in China, e.g. market, resource, production, R & D, management, and government macro control.  
          
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        发布时间：2021-03-12
      • Issue 2, (1997) DOI: 10.19455/j.mcgy.1997.02.012
        摘要：应用单层平压热压机制造中密度纤维板陈子荣李力ＭａｎｕｆａｃｔｕｒｅｏｆＭｅｄｉｕｍＤｅｎｓｉｔｙＦｉｂｅｒｂｏａｒｄｗｉｔｈＳｉｎｇｌｅＯｐｅｎｉｎｇＦｌａｔＨｏｔ┐ｐｒｅｓＣｈｅｎＺｉｒｏｎｇＬｉＬｉ（ＸｉｎｙａｎｇＷｏｏｄｗｏｒｋｉｎｇＭａｃｈｉ...  
          
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        发布时间：2021-03-12
      • Issue 2, (1997) DOI: 10.19455/j.mcgy.1997.02.009
        摘要：木材磨削与磨削设备（二）习宝田李黎３磨具磨具分两类：一类是涂附磨具，系采用静电植砂或重力植砂工艺将磨粒粘附在纸质或布质基材上；另一类为砂轮，是将磨粒与陶瓷结合剂混合，经压坯成型一干燥一煅烧而成的有一定孔隙的回转体（见图５）。图５磨具构造（ａ）涂附磨具...  
          
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        发布时间：2021-03-12
      • Dai Zengan
        Issue 2, (1997) DOI: 10.19455/j.mcgy.1997.02.010
        摘要：The heat consumption of the conventional brick and concrete kilns is quite high and there is a great potential of energy saving. It was proved in practice that equiped with polyurethane foam layers and air tight doors, thermal insulation of the kilns can be remarkably improved. The heat lose of the dryer chamber and the total energy consumption were reduced by 60% and 12% respectively. The feasiability of using oil as an intermediate of heat transfer for energy saving also was dicussed.  
        关键词：Brick and concrete kiln;Polyurethane foam;Oil   
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        发布时间：2021-03-12
      • Jin Juwan Hua Yukun
        Issue 2, (1997) DOI: 10.19455/j.mcgy.1997.02.002
        摘要：It is very meaningful to make use of Metasequoia glyptostroboides to produce high quality structural board. It helps not only to solve problem of how to use Metasequoia glyptostroboides efficiently and reasonably,but also to alleviate contradiction between supply and demand of structural board. In this study, wood properties of Metasequoia glyptostroboides relating to manufacturing technology of OSB were analyzed, The OSB was made and its properties were measured in laboratory. The results showed that manufacturing OSB of Metasequoia glyptostroboides with UF resin was successful. The board properties can reach or excess European standard EN300 when appropriate technology was applied.  
        关键词：Metasequoia glyptostroboides;wood property;OSB   
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        发布时间：2021-03-12
      • Issue 2, (1997) DOI: 10.19455/j.mcgy.1997.02.013
        摘要：木质材料的阻燃剂木质材料的燃烧与阻燃系列讲座之三刘燕吉陈荔木材阻燃剂［１］是一类能够改善或加强木材抗燃性能的化学药剂。早在公元一世纪，古罗马人就曾用明矾和醋溶液处理木材防止木船着火。我国古代也有用海水（含氯化钠和氯化镁）浸泡木板防火、防裂的传说。１８...  
          
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        发布时间：2021-03-12
      • Issue 2, (1997) DOI: 10.19455/j.mcgy.1997.02.011
        摘要：热压板表面防腐蚀抗粘附涂膜处理技术李争平王淑英李淳ＳｕｒｆａｃｅＦｉｌｍＣｏａｔｉｎｇＴｅｃｈｎｉｑｕｅｆｏｒＨｏｔＰｌａｔｔｏＡｎｔｉｃｏｒｒｏｓｉｏｎａｎｄＡｎｔｉｓｔｉｃｋｉｎｇＬｉＺｈｅｎｇｐｉｎｇＷａｎｇＳｈｕｙｉｎｇＬｉＣｈｕｎ（Ｈａｒｂ...  
          
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        发布时间：2021-03-12
      • Issue 2, (1997) DOI: 10.19455/j.mcgy.1997.02.014
        摘要：连续平压热压机（之一）欧阳琳１概述１．１连续平压热压机的兴起在人造板生产中，热压工序是最主要的工序之一。这是因为热压机理比较复杂，不仅包括机械、物理变化过程，还包含有化学变化过程，且影响这些过程的因素又很多，热压工序一旦失误，其损失将无法修复和弥补。...  
          
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        发布时间：2021-03-12
      • Luo Zhaohui
        Issue 2, (1997) DOI: 10.19455/j.mcgy.1997.02.003
        摘要：In this study, the synthetic technology of different polyurethane prepolymers was investigated. The effect of molecular structure of polyurethane on tensile strength and percentage elongation were evaluated by measuring the mechanical properties of the cured resin films. Bonding tests of high moisture content wood with polyurethane adhesives were also carried out tentatively. The results indicated that the adhesives withlinear structure and high molecularweight showed higherpercentage elongation but lower tensile strength. It is possible to use polyurethane for bonding high moisture content wood.  
        关键词：polyurethane;Prepolymer;Sealing adhesive;Wood adhesive   
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        发布时间：2021-03-12
      • Liu Xiuying Dai Yunlian
        Issue 2, (1997) DOI: 10.19455/j.mcgy.1997.02.005
        摘要：Poplar wood was pretreated with white rot fungi then pulped with kraft method. The result showedthat both white rot fungus C.v. 1 (Coriolus versicolor No.1)and C.v. 2 (Coriolus versicolor No.2)were very capable of decomposing lignin of wood but the former was stronger than the later. The experimental result of pulping and paper making showed that paper made of biotreated poplar wood had better physico mechanical properties than that of untreated poplar wood. Moreover, cooking time of biotreated wood was decreased by 50% compared with untreated poplar wood.  
        关键词：White rot fungi;Biotreatment;poplar wood;Pulping   
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        发布时间：2021-03-12
      • Ma Xin Yan Zhen
        Issue 2, (1997) DOI: 10.19455/j.mcgy.1997.02.008
        摘要：As one kind of indoor pollutants, formaldehyde is usually associated with the use of formaldehyde based adhesives. This paper reviewed literatures dealing with formaldehyde emissions from UF resin bonded wood based panels. It analyzed the mechanism of UF resin hydrolysis and formaldehyde release, introduced the toxicology, the limitations, regulations and guidelines, related to formaldehyde. Some methods to reduce formaldehyde emissions were introduced as well.  
        关键词：formaldehyde;free formaldehyde;Formaldehyde emission from wood based panels   
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        发布时间：2021-03-12
      • Yan Haopeng Lu Xixian Qin Tefu
        Issue 2, (1997) DOI: 10.19455/j.mcgy.1997.02.004
        摘要：In this paper, pyrolysis chemical kinetics of wood base materials was investigated with thermogravimetric analysis. The results showed that:1.After the materials lost water, pyrolytic reaction of wood samples and α cellulose consisted of two stages but the reaction of Klason lignin was in only one stage.2.Activation energy for thermal degradation of the wood samples were in the order:α cellulose>wood samples>Klason lignin.3. Order of reaction of different stages of the wood samples and α cellulose were 1, but orders of reaction of Klason lignin were different with different wood species.  
        关键词：Thermogravimetric analysis;Pyrolysis;Reaction kinetics;Activation energy;Order of reaction   
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        发布时间：2021-03-12
      • Pu Anbin Lu Renshu Ai Jun
        Issue 2, (1997) DOI: 10.19455/j.mcgy.1997.02.001
        摘要：As reed’s SiO 2 content is high, it is difficult to glue with UF resin.4,4′ diphenylmethane diisocyanate(MDI) was used to manufacture reed particleboard in this study. The results showed that mechanical properties of the particleboard reached the requierment of high class and second class of A type particleboard standard of China GB/T 4879-92 when the resin consumption was 4% or 5% while the density of the particleboard was 0 70 g/cm 3. If the MDI price is reduced from RMB 20 yuan/kg to RMB 17 30yuan/kg,production costof the particleboard will be equal to that of particleboard bonded with urea formadehyde resin.  
        关键词：Diisocyanate(MDI);Reed;particleboard;Manufacturing technique   
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        发布时间：2021-03-12
      • Sun Liping Cui Yongzhi Song Zhecun Liu Yixing
        Issue 2, (1997) DOI: 10.19455/j.mcgy.1997.02.006
        摘要：Based on model AG 10TA wood universal mechanical testing machine(degree of accuracy 1‰)made in Japan with its attached mechanical sensor and plotting writer, a digital wood cross grain compression testing system was developed by adding an A/D converter and data acquisition program connected with computer data acquisition.  
        关键词：Mechanical testing machine;Computer;Data acquisition   
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        发布时间：2021-03-12
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