最新刊期
      期 0 ， 2020
      • SA Chao,ZHANG Bi guang,WANG De ming,YI Song lin
        Issue 5, Pages: 3-5(2000) DOI: 10.19455/j.mcgy.2000.05.001
        摘要：With veneer as a particularly detected target, a new method for detecting veneer moisture has been developed. Surface resistance of veneer was measured as an indicator of moisture content of the veneer by a surface touched detector. With fixed pressure, circle shaped point with the help of a computer system , the veneer moisture and its distribution will be detected in a fast way and without harm to veneer surface.  
        关键词：Veneer moisture;Circle shaped surface resistance;Detecting   
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        发布时间：2021-03-12
      • LI Kai fu
        Issue 5, Pages: 6-9(2000) DOI: 10.19455/j.mcgy.2000.05.002
        摘要：The White Birch (Betula platyphylla ) branch material, of which 33 % are above 3 cm in diameter, and accounting for 47% of the tree trunk, is a potential resource for particleboard manu facture. In this paper, the properties of both White Birch branch material and the board have been investigated. Based on the experiment, a set of optimized manufacturing technology parameters for White Birch branch particleboard have been put forward.  
        关键词：White Birch branch material;particleboard;Optimization technology   
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        发布时间：2021-03-12
      • YANG Wen bin 1,MA Shi chun 1,GU Lian bai 2
        Issue 5, Pages: 10-12(2000) DOI: 10.19455/j.mcgy.2000.05.003
        摘要：The even fire retardant was made from mixture of borax and boric acid with UF prepolymer as carrier. By analyzing thermodynamics characteristic of Masson’s Pine ( Pinus massoniana) wood before and after fire retardant treatment, the results showed that this fire retardant system could reduce temperature of pyrolysis of treated P. massoniana and average rate of wood weight loss in pyrolysis process, and increase char quantity produced and reduce the weight loss in charring stage.  
        关键词：P. massoniana;Dynamic thermal gravity method;Fire retardant mechanism   
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        发布时间：2021-03-12
      • FANG Gui zhen,PANG Jiu yin,AI Mu ye,LI Shu jun
        Issue 5, Pages: 13-15(2000) DOI: 10.19455/j.mcgy.2000.05.004
        摘要：In this paper, Populus ussuriensis wood was modified with fire retardant WFR J1 . The properties of fire retardant, dimensional stability and painting performance of the modified wood were determined. The results showed that WFR J1 was good as a wood fire retardant. With 10% concentration of WFR J1 , the oxygen index of treated wood could reach 50%. As complex with low mole weight PF resin, WFR J1 also could improve the performances of treated wood greatly in anti swelling or shrinking efficiency (ASE) and moisture excluding efficiency (MEE) , as well dimensional stability of wood. Veneer treated with WFR J1 still had good painting performance.  
        关键词：Fire retardant;Dimensional stability;Painting performance;wood modification   
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        发布时间：2021-03-12
      • MA Zhang fa,LI Yan jun,JIN Yong ming,WU Le ping,TONG Hong bo
        Issue 5, Pages: 16-18(2000) DOI: 10.19455/j.mcgy.2000.05.005
        摘要：Under conventional conditions the inner dyeing parameters for fast growing Chinese Fir (Cunninghamia lanceolata), such as permeable direction of dyestuff solution, moisture content of specimens, dyestuff solution consistence, permeable agent amount, steeping time, and solution permeability were studied. Each factor’s influence on permeability was analyzed through a series of single factor experiments and variance analysis. The results showed that the solution permeable direction,[WT5,5”BZ] specimen’s moisture content and dyestuff solution content and dyestuff solution consistence had more effect on permeability, but soaking time and permeate agent amount had less effect.  
        关键词：Chinese Fir;Inner dyeing;permeability   
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        发布时间：2021-03-12
      • LIU Zhan sheng,ZHANG Qin li,ZHANG Qi sheng
        Issue 5, Pages: 19-21(2000) DOI: 10.19455/j.mcgy.2000.05.006
        摘要：With respect to the classifications,manufacturing methods,fixation mechanisms of the deformation,quality,application and other aspects,recent developments of compressed wood were analyzed and summarized.  
        关键词：Compressed wood;Manufacturing methods;Deformative fixation mechanism   
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        发布时间：2021-03-12
      • HU Yue hui
        Issue 5, Pages: 27-28(2000) DOI: 10.19455/j.mcgy.2000.05.009
        摘要：By comparing oriented strand board (OSB) with other kinds of wood based panels on raw material, processing technology, properties of products, price and uses, the author considers that OSB using small diameter timber as main material is adapted to the variations of wood material source at present in China. OSB product can be used as construction material to replace structure plywood for wall components , interior decoration for housing, trains and ships, and for furniture and concrete form making.  
        关键词：Oriented strand board;Wood based panel;Structure plywood   
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        发布时间：2021-03-12
      • ZHOU Yong dong
        Issue 5, Pages: 29-30(2000) DOI: 10.19455/j.mcgy.2000.05.010
        摘要：Several methods for wood moisture content (MC) measurement and their main influence factors which could result deviations of the MC value were evaluated. The advantage and disadvantage of these measuring methods were also analyzed and suggestions for measuring process were pointed out.  
        关键词：moisture content;Measurement;Influence factor;Deviation   
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        发布时间：2021-03-12
      • YAN Wen fei
        Issue 5, Pages: 33-34(2000) DOI: 10.19455/j.mcgy.2000.05.012
        摘要：By calculating and comparing the quantity of heat dissipation through the dry kiln door with different thickness, a conclusion was drawn that the quantity of heat dissipation through the dry kiln door reduced at first and then increased along with the increase of the door thickness over a suitable range.  
        关键词：Dry kiln;Heat insulation door;Heat dissipation   
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        发布时间：2021-03-12
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