最新刊期
      期 0 ， 2020
      • HU Ying cheng 1,WANG Feng hu 1,LIU Yi xing 1,Tetsuya Nakao 2
        Issue 2, Pages: 3-5(2001) DOI: 10.19455/j.mcgy.2001.02.001
        摘要：The dynamic modulus of elasticity （ MOE ） in bending of plywood was measured by tests of flexural vibration, longitudinal transmission and longitudinal resonant vibration. The results indicated that the MOE of plywood by different nondestructive tests were different, but there was a correlation between them.  
        关键词：plywood;Nondestructive test;Modulus of elasticity（ MOE ）;Vibration method   
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        发布时间：2021-02-08
      • ZHANG Yang,HUA Yu kun
        Issue 2, Pages: 6-8(2001) DOI: 10.19455/j.mcgy.2001.02.002
        摘要：In this study, the surface contact angle among methane diisocyanate （MDI）、urea formaldehyde resin（UF） and different parts of wheat straw were tested,and the surface free energy of wheat straw was reckoned by testing the contact angle between liquid with different surface tensile and wheat straw. The result showed that the surface free energy of wheat straw was low and there was difference in the longitudinal and cross directions of the wheat straw.  
        关键词：wheat straw;contact angle;Surface free energy   
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        发布时间：2021-02-08
      • AI Jun,LU Ren shu
        Issue 2, Pages: 9-10(2001) DOI: 10.19455/j.mcgy.2001.02.003
        摘要：The chemical compositions of wheat straw fibers treated with different preheating conditions were measured. The properties of medium density fiberboard （MDF） with different wheat straw fibers and different resin consumption were explored in this work. The results showed that the boards made with appropriate wheat straw fibers and a 16% resin consumption could meet the requirement of National Standard GB/T 11718 1999.  
        关键词：Wheat straw fiber;Preheating treatment;Resin consumption;Medium density fiberboard（MDF）   
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        发布时间：2021-02-08
      • ZENG Qin zhi 1,WU Chun chu 1,WANG Yi huai 2
        Issue 2, Pages: 11-13(2001) DOI: 10.19455/j.mcgy.2001.02.004
        摘要：Microcomputer measurement and control system for hot press of Medium density fiberboard（MDF） was designed integrated with one chip microcomputer and personal computer. The software of the system was programmed with MCS 51 assemble language and Visual Basic 6.0 for Windows 98, which was visualization and object oriented programming. It provides some merit, such as strong ability of processing data, big capacity of storage data, and visual and convenient windows etc. The system can be expended and transplanted easily.  
        关键词：Medium density fiberboard MDF;Hot press;Measurement and control system;Microcomputer   
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        发布时间：2021-02-08
      • Issue 2, Pages: 14-16(2001) DOI: 10.19455/j.mcgy.2001.02.005
        摘要：The fast growing Chinese Fir board was modified by hot pressing after impregnated with urea formaldehyde （UF） resin. The results were as follows: （1） the modulus of rupture （MOR） and modulus of elasticity （MOE） of modified Chinese Fir board were increased on an average by 42% and 17% respectively, the water absorption（ WA ） was decreased by 45% and the thickness swelling （TS） was no marked change; （2） the effects of hot pressing pressure on properties of MOR and MOE of board were quite obvious and the impregnating time in UF resin was the most effective factor on properties of water absorption and thickness swelling.  
        关键词：Fast growing Chinese Fir;modification;UF resin;Hot pressing   
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        发布时间：2021-02-08
      • JIANG Ming liang
        Issue 2, Pages: 17-19(2001) DOI: 10.19455/j.mcgy.2001.02.006
        摘要：The mixture formulation of chlorothalonil emulsion （F1） and mixture of chlorothalonil emulsion and other fungicide （F2） was more effective than F2 or sodium pentachlorophenol （NaPCP） alone in controlling stain and mold of rubberwood （ Hevea brasiliensis ）. In pilot test, the sawntimber treated with each formulation of F1/F2 and NaPCP was not infected with stain and mold. In vacuum pressure treatment test, the result indicated that F2 could prevent the treated timber for 12 days from stain and mold except white mold; and the mixture of 0.0094% F1 and 0.018% F2 could keep the treated timber for 15 days from stain and mold in air drying procedure under the above concentrations. The higher concentrations of F1/F2 might prevent the treated timber for longer time from stain and mold.  
        关键词：rubberwood;Anti sapstain and anti mold;Mixture of chlorothalonil F1/F2   
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        发布时间：2021-02-08
      • YU Wen ji 1,REN Ding hua 1,ZHOU Yue 1,WANG Tian you 1,LIANG Jing he 2
        Issue 2, Pages: 20-22(2001) DOI: 10.19455/j.mcgy.2001.02.007
        摘要：This paper analyses the situation of wood raw materials supply in particleboard factory, making a detail appraisement on technique & equipment adaptability of making wheat straw homogenous board on particleboard line and put forward the reconstruction project for particleboard line in existence. It is one of the effective ways to resolve the shortage problem of wood raw materials supply for particleboard industry.  
        关键词：Wheat straw homogenous board;particleboard;Adaptability of technique and equipment;Technique reconstruction   
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        发布时间：2021-02-08
      • DENG Nai fu
        Issue 2, Pages: 23-24(2001) DOI: 10.19455/j.mcgy.2001.02.008
        摘要：In this paper, the control of end point of UF resin condensation was discussed. If the end point of UF resin condensation could be controlled properly, the properties of UF resin would be improved, thus the adhesive consumption could be reduced while the modulus of rupture, internal bond strength and water absorption of the board still reached the requirement of National Standard.  
        关键词：Urea formaldehyde resin;End point of condensation;Adhesive consumption   
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        发布时间：2021-02-08
      • TANG Xiao shu,ZHANG Bi guang,GAO Jian min
        Issue 2, Pages: 25-27(2001) DOI: 10.19455/j.mcgy.2001.02.009
        摘要：This paper describes a research on saving energy calculation method and the selection of thermal insulating materials for wood drying kiln. With the calculating results, some kiln shell structures which are suitable for different types of wood drying kiln in China were recommended.  
        关键词：Wood drying kiln;Thermal insulating material;Saving energy   
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        发布时间：2021-02-08
      • CHENG Fang,GAO Ke cheng,SHI Jian ping
        Issue 2, Pages: 29-31(2001) DOI: 10.19455/j.mcgy.2001.02.012
        摘要：Testing and analyzing of the profile density of wood based panel are important in controlling the quality of product.In this paper, the significance of the research and development, the system structure of hardware and software as well as the working mechanism on profile density analyzer for wood based panel were introduced.  
        关键词：Wood based panel;Profile density analyzer   
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        发布时间：2021-02-08
      • ZHANG Yi fan
        Issue 2, Pages: 32-34(2001) DOI: 10.19455/j.mcgy.2001.02.011
        摘要：In this paper, the types, basic properties of finish foil and its application in the fields of furniture and interior decoration were introduced. The main raw materials and production technology of post impregnated foils were also introduced.  
        关键词：Finish foil;application;production technology   
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        发布时间：2021-02-08
      • HE Hong kui,LI Li,GUO Jian fang
        Issue 2, Pages: 35-36(2001) DOI: 10.19455/j.mcgy.2001.02.013
        摘要：A series introduction for several famous Italian sanding equipment manufacturing companies will be presented in this column respectively. The technical performance for different systems of sanding machine, such as Eurosand,Chronosand,Topsand were introduced briefly in this issue.  
        关键词：Sanding machine;DMC   
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        发布时间：2021-02-08
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