最新刊期
      期 0 ， 2020
      • Guo Jihong Guan Ning
        Issue 4, Pages: 2-5(1992) DOI: 10.19455/j.mcgy.1992.04.001
        摘要：Rheological properties of the flakes of poplar and oak woods cut with knives of various rake angles were studied by applying the method of parameter separation. The main results obtained were: 1) Rheological properties of the flakes were affected by rake angles of the knives with which the flakes were cut 2) Change of the flake properties made by the increase of rake angle was advantageous to board properties. 3) Effects of rake angle on flake properties were basically in commom for different wood species, while it is possible that the effects displayed on board properties vary with various species.  
        关键词：Flakes;Knife rake angle;Rheological properties   
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        发布时间：2021-03-12
      • Yu Wenji
        Issue 4, Pages: 5-12(1992) DOI: 10.19455/j.mcgy.1992.04.002
        摘要：The purpose of this study is to determine the manufacturing conditions and methods for making bamboo weaving board. Sinocalamus affinis was selected for this study and its chemical composition was analysed. Ureaformaldehyde resin was used as the binder. The results of the experiment are summerized as follows: the parallel weaving method is superior to the cross weaving method; by changing bamboo weaving board’s structurs can not only enhance board’s bonding strength but also simplify hot-press process; after pretreated, bamboo’s bonding performance can be improved.  
        关键词：Bamboo weaving board;Parallel weaving method;Cross weaving method   
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        发布时间：2021-03-12
      • Zhang Guangren Wang Ruijie Hu Yun
        Issue 4, Pages: 13-16(1992) DOI: 10.19455/j.mcgy.1992.04.003
        摘要：The lacquer film of wood product surface is easy to crack. The influences on film crack by paint composition, wood species and sections, thickness of film and prime paint when temperature changes were studied in this article.  
        关键词：Lacquer;Resistance to temperature fluctuations;Thickness of lacquer film   
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        发布时间：2021-03-12
      • Liu Yanji Wu Jianshen Li Yudong
        Issue 4, Pages: 17-21(1992) DOI: 10.19455/j.mcgy.1992.04.004
        摘要：The fire retardant-treated particteboard was produced by mixing wood chips with fire retardant, fire resistant solid component respectively. This production technology causes no waste of chemicals and no enviromental pollution. The fire retardant chemicals used contain amino resin as carrier and P-N system chemical solution.The physical and mechanical properties of fire retardant-treated particleboard met the Chinese National Standart of particleboard. The fire retardant poperties of the board were oxygen index of 40%-50%, flame resistance time of 15-25min as well as smoke generation of class A. The fire retardant used is low toxic to human.  
        关键词：Fire retardant;Fire retardant-treated particleboard;Limiting oxygen index;Flame resistance time;Smoke generation   
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        发布时间：2021-03-12
      • Ji Chengcao Yuan Yisheng
        Issue 4, Pages: 22-27(1992) DOI: 10.19455/j.mcgy.1992.04.005
        摘要：Different treatment methods, including immersion-diffusion treatment, full-cell process and double-vacuum process treatment for wood building members were studied, which are simple and good In addition, mechanical properties differences between wood treated and untearted were analysed. The distribution of Cu-Cr-As in wood by SEM-EDXA-SQ technique was also been done.  
          
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        发布时间：2021-03-12
      • Xiao Shaoqiong Shi Guixuan
        Issue 4, Pages: 28-34(1992) DOI: 10.19455/j.mcgy.1992.04.006
        摘要：By air drying and by the Japanese "one hundred degree research method", the drying characteristics of four species of hard-wood including CyclobalanIopsis delavayi, Catanopsis delavayi, Lithocarpus dealbatus and Quercus variabilis were studied. The results indicated that because of the low rates of drying and easy occured drying defects, such as the surface check, the honeycomb check, the warping and twisting, the wood of these four species are hard to dry. The reasons include high tyloses contents in vessels, high wood density, uneven wood structures, high volumetric shrinkage values, high ratio of tangential to radial shrinkage and poor water permeabilities for these four kinds of wood. Suggestions were made to overcome these drying defects above mentioned and the drying schedules of these four species were built.  
        关键词：Hard—Wood;Drying characteristics;Shrinkage properties;Japanese method;Air drying   
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        发布时间：2021-03-12
      • Sun Youfu
        Issue 4, Pages: 35-38(1992) DOI: 10.19455/j.mcgy.1992.04.007
        摘要：Three sawing ways are usually used in sawmills. In this thesis the mimic sawing was carried out by a computer. Then the results was analysed and evaluated. It was found how to influence the width of the sawn timber, lumber recovery and economic effects. The theoretical basis is contributed for sawyers to reasonably utilized logs and choose the sawing method in the production process in sawmills.  
        关键词：Computer;Mimesis;Sawing method;Lumber recovery;Economic effect   
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        发布时间：2021-03-12
      • Issue 4, Pages: 39-43(1992) DOI: 10.19455/j.mcgy.1992.04.008
        摘要：<正> 东北地区现有刨花板厂(车间)约60家,设计年生产能力79.10万m~3,分别占全国刨花板厂数的40%和生产能力的49.16%。企业规模有年产5万m~3(7家,占11.6%)、3万m~3(5家,占8.3%)、1.5万m~3(6家,占10%)、1.0万m~3(7家,占11.6%)、0.7万m~3(9家,占15%),0.5万m~3(12家,占20%),小于0.5万m~3(14家,占23.3%)(见表1、2)。黑龙江省和吉林省近几年发展较快,并有较大的潜力和后劲。然而,多年  
          
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        发布时间：2021-03-12
      • Issue 4, Pages: 44-46(1992) DOI: 10.19455/j.mcgy.1992.04.009
        摘要：<正> 前言刨花板的工业化生产始于本世纪初。随着这种新型板材的出现,人们对其应用技术一直不断地进行探索。其中,板材间的连接是一个非常重要的问题,需要根据材料的特性、成品用途、以至艺术效果等方面的要求确定其连接形式。60年代中期以来,以刨花板为基材的现代板式家具的生产得到迅速发展,促使这一领域的研究更加深入。迄今为止,人们对刨花板连接性能与其物理力学性能之间的关系已有了较全面、深入的认识,许多研究成果  
          
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        发布时间：2021-03-12
      • Issue 4, Pages: 47(1992) DOI: 10.19455/j.mcgy.1992.04.010
        摘要：<正> 自一九七五年意大利杨树在江苏泗阳县繁育和推广以来,意杨资源逐年增多,预计一九九一年至一九九五年意杨成熟林年采伐量可达7.5万立方米,意杨胶合板生产属新工艺,新技术,经几年来的生产实践,我们积累了一些成功和不成功的经验。杨木为速生阔叶树材,材质疏松,心边材差异较大,一般边材呈白色,心材为红褐色;心边材的pH值也有差异,边材PH值平均为6.95,均方差为0.055,心材pH值平均为7.01,均方差为0.156。另外,心边材部分的初始含水率亦不相同,这一差  
          
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        发布时间：2021-03-12
      • Issue 4, Pages: 48-50(1992) DOI: 10.19455/j.mcgy.1992.04.011
        摘要：<正> 近年来各种拼花木地板市场呈供不应求的趋势,年产值达10亿元,并每年以10%～15%的速度增长。经我们建厂的单位,均获得较好的效益。拼花木地板生产有如下优点: 1.原料来源广泛拼花木地板生产既可使用采伐、造材、加工剩余物,也可使用弯弯扭扭的次、小、薪材及其它采伐剩余物,不与其它大中型木材加工项目争资源。2.选用设备通用性强,维修简便拼花木地板生产设备除可用于生产地板外,还可随市场需求  
          
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        发布时间：2021-03-12
      • Issue 4, Pages: 51-54(1992)
        摘要：<正> 中国林科院木材工业研究所研制的CIQS—东南亚阔叶树材计算机数据库查询系统于1992年6月18日在北京通过专家鉴定。木材解剖特征系根据正确定名标本记载;木材力学数据全部采用东南亚试验结果,还有按中国标准进行了换算的数据;木材主要用途38类,列出了适宜每类用途的树种。本系统贮存了东南亚阔叶树材201种(类)及每个树种  
          
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        发布时间：2021-03-12
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