最新刊期
      期 0 ， 2020
      • Issue 3, (1995) DOI: 10.19455/j.mcgy.1995.03.004
        摘要：CCB is an excellent wood preservative. But its anti-leaching is not as good as thatof CCA. Because CCB is a water soluble preservative,the dimension of wood will be changedafter treatment with CCB. This study attempts to improve the anti-leaching of CCB and di-mensional stability of the treated wood by means of adding some polymer or resin into thepreservative. The results showed that after a small amount of polyvinyl acetals resin wasadded into CCB the leaching of copper,chromium,boron decreaced 57.63,78.53 and 96.4%respectively,the tangential,radical and volumetric wet-swelling rates decreased 91.97,88.34,84.20%,The decay resistance of treated wood was improved distinctly.  
        关键词：Wood preservative CCB;Polyethylene glocols;Polyvinyl acetals resin;Anti-leaching;Wet-swelling rates   
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        发布时间：2021-03-12
      • Issue 3, (1995) DOI: 10.19455/j.mcgy.1995.03.003
        摘要：The paper discusses the producing technology of resin impregnated veneer lami-nated lumber with high density and hardness for the purpose of manufacturing high qualitygate-ball mallet.The results showed that all the physical and mechanical properties of themallet,which filled in the gap in the native market,exceeded the imported ones. In addition,a newly improved composing structural design of mallet was deveIoped to replace traditionalone.  
        关键词：Resin impregnated veneer laminated lumber;Gate-ball mallet   
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      • Issue 3, (1995) DOI: 10.19455/j.mcgy.1995.03.008
        摘要：在竞争中立足，在改革中前进──上海联合木材工业公司近几年工作回顾邵一飞（上海市联合木材工业公司上海２０００２１）上海联合木材工业公司是一家主要生产经销各类人造板和木制品的企业集团，近几年来，公司致力于内部产业结构和产品结构的调整。全公司经过裁并组合，...  
          
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      • Issue 3, (1995) DOI: 10.19455/j.mcgy.1995.03.007
        摘要：意大利木工机械进入中国的回顾（续二）刘苗，李黎，张男男据统计，意大利有近８０家木工机械制造商向中国大陆出口过木工机械，至今累计达４０００台左右，意大利进口木工机械分布在４００多家中国木材加工企事业单位中。这８０家意大利木工机械制造商中，直接到中国推销...  
          
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      • Issue 3, (1995) DOI: 10.19455/j.mcgy.1995.03.010
        摘要：四种典型干燥机性能比较和改进建议周冰凝，膝通濂（中国林科院木材工业研究所北京１０００９１）１前言我国木材干燥生产近几年得到迅猛发展，人工干燥材产量不断增加，据不完全估计，年干燥木材从１９７６年的１８０方ｍ￣３增长到１９９０年的２５０方ｍ￣３左右￣［１...  
          
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      • Zuo Jianhua
        Issue 3, (1995) DOI: 10.19455/j.mcgy.1995.03.005
        摘要：A microcomputerized control system for hot press in making hardboard is de-signed.The pressing time can automatically be changed with the temperature of hot platen.The real-time control is upgraded.  
        关键词：Hot pressing procedure;Bang-bang control;Microcomputer control   
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      • Issue 3, (1995) DOI: 10.19455/j.mcgy.1995.03.009
        摘要：Ｊ—３改性尿素－三聚氰胺－甲醛树脂的研制及应用李建章，李孔钦，于志明（北京林业大学森林工业学院，北京１０００８３）１前言浸渍胶膜纸饰面人造板是由浸有树脂并经过烘干的装饰纸直接覆盖于人造板基材表面进行热压而成。由于树脂固化，胶膜纸在与基材胶合的同时，形...  
          
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      • Issue 3, (1995) DOI: 10.19455/j.mcgy.1995.03.006
        摘要：on the basic date of observing 41 representative of wood species and grading 14visual psychological variables by 62 persons tested in 4 groups,this research mainly discussedthe relationship between the variables of visual psychological magnitude of wood,the classi-fication of factors and the visual psychological feature of persons tested in different groups.The research results showed that firstly some variabled of visual psychological magnitude ofwood were internally related to each other and main comprehensive visual psychological mag-nitude were obtained.Secondly,even though each person in different groups had a similar re-sult,the tested persons showed their own psychological characteristic individually in some re-spect of the results.  
        关键词：Woodsurface;Visual environmental science;Visual psychological magnitude   
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      • Issue 3, (1995) DOI: 10.19455/j.mcgy.1995.03.002
        摘要：In this paper the effect of accelerated aging factors on aging resistance of Massonpine PF-particleboard was analysed and several accelerated-aging tests was compared.It wasfound that freezing affected internal-bond strength when specimen was saturated with water.When moisture content of the tested specimen was low, steaming procedure did not signifi-cantly affect strength.The properties of panel decreased dramatically in the first cycle,Differ.ent accelerated-aging tests meant various degree influences on properties of panal.The loss ofinternal-bond strength was more than that of modulus of rupture by accelerated -aging test.IB could be as the index which evaluated the aging resistance of particleboard.The cyclicsoak-dry test could be used instead of ASTM D 1037 accelerated-aging test. The one-hourboiling test could be used in-plant quality control.  
        关键词：Phenolic resin-bonded particleboard;Aging of particleboard;Accelerated agingtest   
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      • Issue 3, (1995) DOI: 10.19455/j.mcgy.1995.03.001
        摘要：In order to develop new decorative overlaying materials in replace of sliced veneerof natural precious species,the technology of making fancy veneer from lauan,poplar andbirch et al.was studied,and the processing parameters of bleaching,dyeing,as well asglueing were also determined.According to the study,rotary veneers were dyed and assembedin imitation of colour and grain of nature teakwood,then glued under high MC(20%～30%)by special adhesive developed in this study. The test results showed that the properties ofwater- resistance,light fastness and bond- strength of the fancy veneer were quite satisfied.  
        关键词：Fancy veneer;Bleaching;dyeing;High MC gluing   
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