最新刊期
      期 0 ， 2020
      • MA Yan
        Issue 2, Pages: 3-4(2002) DOI: 10.19455/j.mcgy.2002.02.001
        摘要：Hot leveling technology and its theory foundation were introduced as the new approach to replace the traditional sanding process. The application of hot teveling and roller pressing could make the heated fine hair shape wood fiber molded and fixed on the timber surface and thus the wood surface would become dense, bright and clean. Wood surface could be leveled with the heat generated from sawing by setting up the hot leveling tool behind the cutting tool. This paper also pointed out that both high frequency mechanical vibration and ultrasonic leveling had good effects for various materials, and could be applied in many occasions because of the flexible frequency and power adjustment range.  
        关键词：Wood surface;Hot leveling   
        10
        |
        51
        |
        0
        <HTML>
        <L-PDF>
        <引用本文> <批量引用> 6615763 false
        发布时间：2021-02-08
      • Nobuya MINEMURA
        Issue 2, Pages: 5-8(2002) DOI: 10.19455/j.mcgy.2002.02.002
        摘要：The author described the characteristics of representative wood discoloration, its removal way and preventing method. Furthermore, how to find the removal way of discoloration and utilization of the discolored wood was also discussed.  
        关键词：Wood discoloration;Iron stain;Staining removal   
        11
        |
        199
        |
        26
        <HTML>
        <L-PDF>
        <引用本文> <批量引用> 6616015 false
        发布时间：2021-02-08
      • HE Jiang,WU Shu hong
        Issue 2, Pages: 9-11(2002) DOI: 10.19455/j.mcgy.2002.02.003
        摘要：Wood, as a solid natural polymer material, could be liquefied into solution reactive molecules which could be further developed into novel polymer materials such as adhesives, moldings, foams and fibers. These facts imply that completely new fields of utilization of wood have been opened. The advances of wood liquefaction in the past twenty years, involving the methods, mechanism and applications of the products, were reviewed in the paper.  
        关键词：Wood liquefaction;Cellulose;lignin   
        17
        |
        436
        |
        81
        <HTML>
        <L-PDF>
        <引用本文> <批量引用> 6615880 false
        发布时间：2021-02-08
      • LONG Ling,CHEN Shi yin,LIU Yi hai
        Issue 2, Pages: 12-14(2002) DOI: 10.19455/j.mcgy.2002.02.004
        摘要：It is necessary to consider the possible expansion by providing a gap when particleboards were used as wall sheathing. This study discussed the change of expansion gap of panel wall sheathing at different relative humidity. The results showed that decorative and edge sealing UF particleboards could be used as wall sheathing in humidity condition such as kitchen, and non decorative panels were not suitable for wall sheathing directly. It was also concluded that the suitable expansion gap of particleboard wall sheathing was about 2～3 mm per meter length of wall.  
        关键词：Expansion gap;particleboard;Wall model   
        9
        |
        29
        |
        0
        <HTML>
        <L-PDF>
        <引用本文> <批量引用> 6616215 false
        发布时间：2021-02-08
      • LIU Jing hong,LIN Qiao jia
        Issue 2, Pages: 15-18(2002) DOI: 10.19455/j.mcgy.2002.02.005
        摘要：Considering the defect of easily mildewing of the bamboo particle concrete form, the experiments on the relationship between density and antimould property of the form with five antimould chemicals were carried out. The results showed that the density had a significant linear relationship with the antimould property of the panel. The panels treated with the antimould agent NPFB had the ideal antimould property and the main physical and mechanical properties of concrete form made of them could meet the requirements of the standard JG/F 3026 1995.  
        关键词：Antimould agent;Bamboo particleboard;Concrete form   
        10
        |
        43
        |
        1
        <HTML>
        <L-PDF>
        <引用本文> <批量引用> 6615808 false
        发布时间：2021-02-08
      • LU Xiao ning,HE Yi,ZHOU Xiao yan
        Issue 2, Pages: 19-21(2002) DOI: 10.19455/j.mcgy.2002.02.006
        摘要：Post isothermal treatment was effectively used to improve not only the internal bonding strength, but also its property homogeneity of the particleboard with low molar ratio and non dewatering urea formaldehyde resin with or without curing agent added. During the thermal treatment the curing agent didn’t cause any degradation of adhesives. The post isothermal treatment conditions were suggested as keeping panels in an oven at 80 ℃ for 30 minutes while the center temperature of panels after hot pressing was cooled to 100 ℃.  
        关键词：Post isothermal treatment;particleboard;Non dewatering UF resin   
        12
        |
        116
        |
        12
        <HTML>
        <L-PDF>
        <引用本文> <批量引用> 6616022 false
        发布时间：2021-02-08
      • SUN Zhao bin
        Issue 2, Pages: 22-25(2002) DOI: 10.19455/j.mcgy.2002.02.007
        摘要：The flyash particleboard was a kind of composite material with the flyash as the main material and the wood flake as the reinforcement through hot pressing. The adhesive mechanism of flyash particleboard was discussed and analysed from the physical and chemical properties, activity and hydration mechanism of flyash; action mechanism of temperature and additive agent as well as the microstructure analyses from scanning electron microscope （SEM） and X ray diffractometer （XRD）. It was concluded that the adhesive mechanism of the flyash particleboard was a multi active and complex physicochemical process.  
        关键词：Flyash;particleboard;Adhesive mechanism   
        9
        |
        85
        |
        3
        <HTML>
        <L-PDF>
        <引用本文> <批量引用> 6615827 false
        发布时间：2021-02-08
      • Issue 2, Pages: 26-28(2002) DOI: 10.19455/j.mcgy.2002.02.008
        摘要：According to conventional strength theory, the initial cracks in wood drying were always neglected when dried wood was directly used as architectural or rural farmhouse configuration materials in the past. In this paper, the authors elaborated the cracks in wood drying, wood ortho anisotropic characteristics and crack influence on wood strength. Some preliminary ideas were discussed on researching wood crack and fracture behavior with wood ortho anisotropic characteristics.  
        关键词：wood drying;Crack;Fracture   
        10
        |
        214
        |
        9
        <HTML>
        <L-PDF>
        <引用本文> <批量引用> 6615796 false
        发布时间：2021-02-08
      • MU Ya ping,SONG Xiao zhou,ZHANG Bao jian
        Issue 2, Pages: 29-31(2002) DOI: 10.19455/j.mcgy.2002.02.009
        摘要：Concerning the problems existing in home decoration industry, the systematic design concept, principle and method for furniture and home decoration were proposed. It was also suggested that establishment of frame of the systematic design should be based on the advanced techniques.  
        关键词：Systematic design;System;Surroundings;Industrialization   
        24
        |
        258
        |
        24
        <HTML>
        <L-PDF>
        <引用本文> <批量引用> 6616299 false
        发布时间：2021-02-08
      • PAN Shu qing
        Issue 2, Pages: 32-34(2002) DOI: 10.19455/j.mcgy.2002.02.010
        摘要：In this article, the author introduced the practical experience of technology improvement and equipment adjustment for a domestic medium density fiberboard （MDF） production line with annual capacity of 50 000 m 3 in Guangdong Province. The tested results showed that not only the power consumption and equipment investment for the MDF production line could be reduced, but also the economic benefits and productivity increased after the reformation.  
        关键词：Domestic MDF production line;Reformation   
        6
        |
        46
        |
        2
        <HTML>
        <L-PDF>
        <引用本文> <批量引用> 6616087 false
        发布时间：2021-02-08
      • JIANG Ming liang,WANG Ping
        Issue 2, Pages: 35-36(2002) DOI: 10.19455/j.mcgy.2002.02.011
        摘要：Leaching test was conducted according to AMPA M11 87 standard. Pinus massoniana and Eucalyptus urophylla were treated with ammoniacal copper quat type B （ACQ B）, copper citrate （CC） and chromated copper arsente type C （CCA C）. Leachability determination results showed that the leaching rate was less than 2.5% for the wood treated with ACQ B at the retention of 3.0～6.0 kg/m 3. The anti leachablitity of wood treated with ACQ B was better than that treated with CC, because the leaching rate of wood treated with ACQ B was lower than that treated with CC at almost same copper retention level （as copper oxide）. ACQ B was a potential wood preservative for plantation wood used in the ground field such as agricultural and building wood.  
        关键词：Copper citrate （CC）;Ammoniacal copper quat type B （ACQ B）;Leaching test   
        12
        |
        144
        |
        11
        <HTML>
        <L-PDF>
        <引用本文> <批量引用> 6615817 false
        发布时间：2021-02-08
      • HUANG Rong wen,DONG Min guang
        Issue 2, Pages: 37-39(2002) DOI: 10.19455/j.mcgy.2002.02.012
        摘要：Discoloration of Yunnan Hemlock lumber during drying is a major problem that caused degradation of lumber. In this article, the reasons causing discoloration were analysed based on the research results and practical experience. A suitable drying schedule and some measures for reducing discoloration ratio of Hemlock lumber were also suggested. According to the suggested drying schedule, the discoloration ratio of Hemlock lumber could be cut down to 10% and quality of the lumber could meet corresponding national standard.  
        关键词：Yunnan Hemlock;drying;Discoloration;Control   
        6
        |
        87
        |
        43
        <HTML>
        <L-PDF>
        <引用本文> <批量引用> 6616005 false
        发布时间：2021-02-08
      0