最新刊期
      期 0 ， 2020
      • Lu BinZhou MeijianTang Zhaoqun
        Issue 4, (1999) DOI: 10.19455/j.mcgy.1999.04.009
        摘要：Based on the latest testing date provided by National Center for Supervision and Testing Quality of Woodbased Panels,this paper deals with the quality of 3ply parquet made in China.The result showed:1)the formaldehyde emission of 80 percent of the products was less than 10 mg/100g; 2)the bonding strength of 80 percent of the products was higher than 050 MPa; 3)the glue bond test of 70 percent of the products achieved ANSI/HPMA LHF1987;80 percent achieved JAS No.9551991; 4)the abrasion value of 70 percent of the products was less than 008 g.  
        关键词：ply parquet;quality   
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        发布时间：2021-03-12
      • Wang YihuanZeng Qinzhi
        Issue 4, (1999) DOI: 10.19455/j.mcgy.1999.04.007
        摘要：Hotpressing is very important in woodbased panel production.This paper deals with the methodology, hardware and software design of FLI hot press microcomputer control system, which controls the pressure and displacement of platen.  
        关键词：Woodbased panel production;Hot press;Microcomputer control;Hardware design;Software design   
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        发布时间：2021-03-12
      • Gao LinHe YongzhenLi Li
        Issue 4, (1999) DOI: 10.19455/j.mcgy.1999.04.011
        摘要：This paper described the present situation and development trend of finger jointing technololgy both in China and abroad,features of programmable logic controller (PLC) and PLC control for finger making machine in finger jointing productin.  
        关键词：Finger jointing;Programmable logic controller(PLC);Microprocessor   
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        发布时间：2021-03-12
      • Zhu JiaqiLiu YanjiGao Chaoying
        Issue 4, (1999) DOI: 10.19455/j.mcgy.1999.04.002
        摘要：The paper compared the properties of fire ignition, flamespread, calorific emission, smokegeneration and the curves of thermal analysis of plywood made from rubberwood, Manchurian ash, poplar and basswood. It also described the fire retardancy of rubberwood plywood treated with WFR developed by CRIWI.  
        关键词：Flame retardant(FR);Rubberwood plywood;Burning behavior;Thermal properties   
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        发布时间：2021-03-12
      • Issue 4, (1999)
        摘要：威力新展示厅峻工位于德国陶伯市的威力新展示厅于１９９８年１１月威力集团第八届国际室内展览会结束时开始动工，６个月后，一个崭新的１５６０ｍ２演示培训中心于旧址上如期完工，并于５月３日举行落成典礼。该综合性建筑共投资３００万德国马克，当地的３０家公司参与...  
          
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        发布时间：2021-03-12
      • Xiao Ling
        Issue 4, (1999) DOI: 10.19455/j.mcgy.1999.04.010
        摘要：In this paper,the effects of NC router on woodworking systematization and diversification were introduced briefly.The author indicated that the NC router could be further improved by adopting CPU technique.  
        关键词：NC router;CNC router;Wood working   
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        发布时间：2021-03-12
      • Issue 4, (1999)
        摘要：我国家具出口进入快速增长期自９０年代起，我国家具出口进入快速增长期，出口值从１９９０年的２．０８亿美元增长到１９９５年的１７．６５亿美元，５年猛增８倍，名列世界家具出口第七位。业内人士分析，我国家具出口快速增长的主要原因是：１）国内大城市是我国家具出...  
          
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        发布时间：2021-03-12
      • Zhou Yongdong
        Issue 4, (1999) DOI: 10.19455/j.mcgy.1999.04.012
        摘要：Through analyzing the factors that can effect the stability of the temperature and humidity of the humid air during the wood drying process,the types of the temperature and humidity controller(THC)and the different controlling manner of THC,conclusion was made that:in conventional drying kiln,it was an economic and practical choice to use the dry bulbwet bulb intelligent \{instrument\} of temperature and some circuit,which could meet the needs of wood drying in semiautomatic system.The characteristics of autocontrol system were analyzed and the advice to improve the system was provided.  
        关键词：wood drying;Dry bulb;Wet bulb;Control   
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        发布时间：2021-03-12
      • Yuan Naxin
        Issue 4, (1999) DOI: 10.19455/j.mcgy.1999.04.006
        摘要：The compatibility was determined by measuring hydration heat.The results showed that the inhibition of preventing cement from curing between treated Castanopsis fissa particles either chemical extrated or additives added and untreated particles reduced strikingly.  
        关键词：Castanopsis fissa;compatibility;Woodcement particleboard;Hydration heat;additive;Inhibition   
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        发布时间：2021-03-12
      • Li Chengyuan
        Issue 4, (1999) DOI: 10.19455/j.mcgy.1999.04.013
        摘要：In this paper,the conditioning treatment for thickness of 30 mm crooked dressed oak lumber was described.The results indicated that under the condition of drying temperature of 70, EMC 14.7%, steaming time of 17h, the crooked dressed lumber had regained the straight in the CLZ sidefan kiln.  
        关键词：Residual stress;Conditioning   
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        发布时间：2021-03-12
      • Fang GuizhenLi ShujunJin Zhongling
        Issue 4, (1999) DOI: 10.19455/j.mcgy.1999.04.004
        摘要：To investigate the color darkening effects that low molecular weight phenolformaldehyde(PF)resin may produce, UV and IR were used to analyze light absorption of main products during synthesizing and solidifying of the resin. Resin synthesis and wood sample treatment conditions were determined and color difference of treated Populus ussuriensis samples with the resin were measured. The results showed that color difference of both the treated and the control was small (E* was about 10), and the color hardly changed even if the treated wood was exposed for a long time.  
        关键词：Phenolformaldehyde resin;Wood impregnation   
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        发布时间：2021-03-12
      • Qin Tefu Yan Haopeng
        Issue 4, (1999) DOI: 10.19455/j.mcgy.1999.04.005
        摘要：In the report, the main composites of two species of wood common Chinafir (Cunninghamia lanceolata) and poplar "Sanbei" No.1(Populus nigraP.simonii) were processed with acetylation and the changes of chemical group and the stability of chemical structure of main composites of wood in the process were investigated. The results showed: during the process of acetylation, new nonpolar chemical functional group was found in all the lignin, cellulose and hemicellulose isolated from the wood and the amount of OH group was decreased; under the same process condition, the degree of acetylation of cellulose was lower; meanwhile, during acetylation process hemicellulose was easier to be decomposed, but the lignin and cellulose were more stable. Thus, the acetylation was a useful method of wood surface nonpolarization.  
        关键词：Acetylation;Chemical functional group;Wood surface nonpolarization   
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        发布时间：2021-03-12
      • Du Guanben
        Issue 4, (1999) DOI: 10.19455/j.mcgy.1999.04.003
        摘要：A series of addition and condensation products of urea and formaldehyde was prepared as standard derivatives, and their structures were investigated with highresolution nuclear magnetic resonance(DRX500).Constitutional characterization by13C NMR spectra of condensation product was recorded. By comparison of 13C chemical shifts with above synthesized standard derivatives, assignment of all the signals appearing in resins was completed.  
        关键词：UF resin;structure;13C NMR   
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        发布时间：2021-03-12
      • Qu YanchunCao ZongrongHuang Luohua
        Issue 4, (1999) DOI: 10.19455/j.mcgy.1999.04.001
        摘要：In this study, a manufacturing technology for slash pine (Pinus elliottii) \{medium density\} fiberboard (MDF) is discussed by means of orthogonal experiment design with 4 variable factors: resin content, mat moisture content, pressing temperature, pressing time. The results showed that: 1)mat moisture content and pressing time had more effect on physical and mechanical properties of MDF and resin content and pressing temperature had less effect on that of MDF;2)in the range of the experiment condition, the suitable level of variables was resin content of 8%9%,mat moisture content of 10%,pressing temperature of 165,pressing time of 5 min. The physical and mechanical properties of MDF can meet special grade requirement of MDF standard GB 1171889.  
        关键词：slash pine;Medium density fiberboard (MDF);Manufacturing technology;properties   
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        发布时间：2021-03-12
      • Issue 4, (1999) DOI: 10.19455/j.mcgy.1999.04.014
        摘要：根据磨削加工中所用砂光机砂削机构与木材工件作用方式和最终加工效果的不同，磨削加工可分为定厚磨削与定量磨削两种方式。如果根据被加工对象和加工要求的不同，磨削加工可分为基材尺寸精确校准、基材表面修整和装饰板表面修整三种形式。其中基材的尺寸精确校准加工需使...  
          
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        发布时间：2021-03-12
      • Fei Benhua
        Issue 4, (1999) DOI: 10.19455/j.mcgy.1999.04.008
        摘要：The basic concepts,principles and prospects of fractal theory for wood anatomy,wood physicsmechanics and wood processing have be introduced in this paper.It is one of the effective means in wood science and technology research and application as a new basic theory.  
        关键词：Fractal theory;wood science;Wood technology   
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        发布时间：2021-03-12
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