最新刊期

    期 0 , 2020
    • Chen Jianchao et al.
      Issue 2, Pages: 1-7(1988) DOI: 10.19455/j.mcgy.1988.02.001
      摘要:Pinus tropicalis, P. echinata, P. elliottii and P. latteri are fastgrowing pine trees in the tropical and subtropical regions. They are introduced and growing well in Zhanjiang Prefecture, Guangdong Province. A comparison is made among the wood anatomical-mechanical properties of 20-year-old P. tropicalis, P. elliottii, P. latteri and 10-year-old P.echinata grown on the same site. The results of this study show that they all belong to the hard pine group and the properties of the former 20-year-old pines are better than that of the latter 10-year-old one (P.echinata). These four pine species can be used for paper making before 15 years old and the mature trees can be used just like the hard pines native to China. Besides, they can be considered as resin-tapping trees suitable to develop in South China.  
        
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      发布时间:2021-03-12
    • Liu Yanji et al
      Issue 2, Pages: 7-14(1988) DOI: 10.19455/j.mcgy.1988.02.002
      摘要:Oxygen Index, Smoke Density and Char Length of APP treated Pinus massoniana were measured before and after aging. The relation between impregnating level of fire retardant and non-combustion areas was described in this paper. Fire retardancy of APP treated wood meets Class Ⅰ according to JIS D 1201-77 and JIS A 1322-75. Fire test of formulated small wood house was compared with untreated small wood house. The result showed that APP treated wood can be used for interior room.  
        
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      发布时间:2021-03-12
    • Qin Shaofang
      Issue 2, Pages: 14-21(1988) DOI: 10.19455/j.mcgy.1988.02.003
      摘要:Press is one of the main machines in wood-based panel production. Its mechanical design mainly includes calculation of the ridigity and strength of frame, reasonable arrangement of frame in longitudinal direction, calculation of bending moment, tension and compression stresses exerted on upper and lower platens, relation between location of cylinders and ridigity of the upper platen. These calculations involve so many factors, each of which can effect the final result. So we should treat the data by computer so that the best design could be found quickly with no error.  
        
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      发布时间:2021-03-12
    • Wang Huabin
      Issue 2, Pages: 22-26(1988) DOI: 10.19455/j.mcgy.1988.02.004
      摘要:On the basis of theoretical analysis, this paper introduces design calculation methods for aerostatic guide, including guide-block dimension, compressed-air flow expenditure, guide-block air-film bearing capacity and its rigidity, and air entrance diameter. A calculation example has been given. The design data for construction is also provided.  
        
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      发布时间:2021-03-12
    • Guan Ning
      Issue 2, Pages: 27-32(1988) DOI: 10.19455/j.mcgy.1988.02.005
      摘要:For beginning the research on cutting properties of the important Chinese wood species, the results from the previous research in this field are briefly reviewed and Some problems deserving consideration are discussed.  
        
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    • Wang Junxian
      Issue 2, Pages: 33-36(1988) DOI: 10.19455/j.mcgy.1988.02.006
      摘要:In China, the market of domestic wood based panels was in a recession two years ago. As a result of continual increase in the demand for furniture, wood based panels, as a primary material of furniture products, have commanded a ready sale, even have shown the tension of supply since 1986.Five to ten years from now on, particleboard industry will develop rapidly in our country. For the extension of the market and the application of particleboard, the potential market of the rural areas should be exploited actively and the application of particleboard as a structural component in the building industry should be explorited.The major problems regarding the application of particleboard are quality of the board (that is the property of the board), secondary finishing and selling price. It is necessary to set up various standards and guide specifications according to the requirements of application as well.  
        
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      发布时间:2021-03-12
    • Li Kaifu
      Issue 2, Pages: 37-41(1988) DOI: 10.19455/j.mcgy.1988.02.007
      摘要:This paper is a review of part of fruitful research papers in the world about the notable problem of formaldehyde emission from wood-based panels produced with UF resins. In the paper, hazards and mechanism of formaldehyde release are explained as well as advanced controlling means and determination of emitted formaldehyde, in order to search for an effective and appropriate way to decrease formaldehyde emission from wood-based panels in China.  
        
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      发布时间:2021-03-12
    • Issue 2, Pages: 41-46(1988) DOI: 10.19455/j.mcgy.1988.02.008
      摘要:<正> 白桦(Betula platyphylla Suk)在我国分布广,资源丰富。但其木材制成成品后易翘曲变形,故未能广泛用于家具生产。若经过必要的处理,可以消除这些缺陷,也可以制作高档家具。白  
        
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      发布时间:2021-03-12
    • Issue 2, Pages: 47-48(1988) DOI: 10.19455/j.mcgy.1988.02.009
      摘要:<正> 刨花板的使用性能多数由常用胶粘剂—脲醛树脂的固化程度所决定。本研究的目的是探讨这类树脂固化的动力学和拟定固化过程的动力学模式。根据树脂在80°与100℃热处理过程中羟甲基和游离醛含量的变化来研究固化的动力学。使用1%  
        
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    • Issue 2, Pages: 49-50(1988) DOI: 10.19455/j.mcgy.1988.02.010
      摘要:<正> 前言纸蜂窝夹芯板是用纸蜂窝作芯子两面复以薄板。由于结构合理,力学性能好,且表面平整光洁,不易翘曲变形,近年来,引起了建筑业及家具业的重视。我厂从八十年代初期,试验以纤维板为复面,制成了纸蜂窝夹芯板门及间壁。夹芯板门于  
        
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    • Issue 2, Pages: 50(1988) DOI: 10.19455/j.mcgy.1988.02.011
      摘要:<正> 为适应我国森林资源状况的变化,促进胶合板生产的发展和提高产品加工质量,林业部于1986年下达了修订(《胶合板》)国家标准的任务,责成中国林科院木材所等九个单位承担此项工作。标准起草小组根据积极采用国际标准和国外先进标准的要  
        
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    • Issue 2, Pages: 51-53(1988) DOI: 10.19455/j.mcgy.1988.02.012
      摘要:<正> 瑞典制材工业在瑞典木材加工工业中占有重要的地位,锯材是瑞典木材产品中主要出口产品之一。1985年瑞典的锯材产量为11,400,000m~3,出口7,800,000m~3,而1980—1984年平均年出口量为7,000,000m~3。瑞典锯材主要出口到英国(1985年为1,899,  
        
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      发布时间:2021-03-12
    • Issue 2, Pages: 53-55(1988)
      摘要:<正> 为了充分合理利用森林资源,提高森林资源的利用率,根据国务院领导同志的指示精神,我部会同有关部门在广泛调查研究的基础上,分析了我国林产工业的发展现状和存在问题,研究了促进林产工业发展的措施和意见。现报告如下: 党的十一届三中全会以来,我国的林产工业有  
        
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