最新刊期
      期 0 ， 2020
      • WU Zhang kang 1,ZHOU Ding guo 2,ZHANG Hong jian 1
        Issue 4, Pages: 3-5(2001) DOI: 10.19455/j.mcgy.2001.04.001
        摘要：Vertical Density Profile （VDP） is an important structural characteristic of wood composites and has strong affect on panel properties. Both the main process variables and the technological measures that attributed to VDP forming were discussed. A review on the application of computer modeling for vertical density profile was also presented.  
        关键词：Vertical density profile;Process variables;Computer Modeling   
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        发布时间：2021-02-08
      • SHI Zhen hua
        Issue 4, Pages: 6-8(2001) DOI: 10.19455/j.mcgy.2001.04.002
        摘要：This article introduced the present situation of wood preservation in China, discussed the developing orientation and prospects of China’s wood preservation in the beginning of the new century from four aspects as follows:1)Wood preservation of building timber; 2) Wood preservation of the wood from plantation; 3)Prevention of blue stain fungus and moulds on wood and bamboo; 4)Research and development of new preservatives.  
        关键词：Wood preservation;Wood preservative   
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        发布时间：2021-02-08
      • YAN Hao peng,WANG Jian jun
        Issue 4, Pages: 9-11(2001) DOI: 10.19455/j.mcgy.2001.04.003
        摘要：In this report, by studying the composite of wood synthetic fiber pressed with various ways, the effect of modification of wood fiber and adhesive was investigated. The results showed: wood fiber could take esterified reaction with maleic anhydride and succinic anhydride, thereby the wood surface polarity was decreased. Modified adhesive could be adhered better to the surface of materials with different surface polarity. Thus, the two ways were useful for improving the compositing between wood and synthetic fiber.  
        关键词：composite;wood fiber;Synthetic fiber;modification   
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        发布时间：2021-02-08
      • HU Ying cheng 1,WANG Feng hu 1,LIU Yi xing 1,Tetsuya Nakao 2
        Issue 4, Pages: 12-14(2001) DOI: 10.19455/j.mcgy.2001.04.004
        摘要：A surface wave propagation method was proposed to measure the dynamic shear moduli of plywood for the first time. The testing results of the dynamic shear moduli for plywood measured both by flexural vibration method and surface wave propagation method were different. According to the theoretic analysis, the surface wave propagation method was more suitable for nondestructive testing of dynamic shear moduli of plywood since it could solve the problem especially for measurement of dynamic shear moduli of plywood with 45° grain angle.  
        关键词：plywood;Nondestructive test;Shear modulus of elasticity;Surface wave propagation   
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        发布时间：2021-02-08
      • ZENG Qin zhi
        Issue 4, Pages: 15-18(2001) DOI: 10.19455/j.mcgy.2001.04.005
        摘要：Based on fuzzy control theory, this paper deals with the modeling and the arithmetic to establish the fuzzy controller of hot pressing time for medium density fiberboard （MDF）. Analyzed the arithmetic of the Mamdani theorization and synthesizing, the querying table of the fuzzy controller is established by programming offline, to simplify the arithmetic of the theorization and synthesizing to inquire the querying table directly.  
        关键词：MDF;Hot pressing time;Fuzzy control;Method of querying table   
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        发布时间：2021-02-08
      • LI Jian 1,JIANG Ze hui 2,LIU Jun liang 3
        Issue 4, Pages: 19-21(2001) DOI: 10.19455/j.mcgy.2001.04.006
        摘要：The phenol formaldehyde （PF） resin samples under 16 different synthesis conditions were measured by gel penetration chromatographic instrument （GPC）. The resin quality index and molecular weight was gained. The results showed that if the mole ratio of phenol∶formaldehyde∶NaOH was 1∶2.1∶0.1, synthesis time went beyond 180 min , then the resin’s disperse index was smaller and the molecular was well distributed and the spectra peak was stability. The proportion of molecular distribution between 200～400 was 98.3%. Solid content was 49.8%. Free phenol content was 0.18%. Free formaldehyde content was 0.14%. Brominable substance content was 15.5%. Resin viscosity was 8.8 mPa·s . pH value of resin was 9.23.The ability of dissolve in water was beyond 7.5.  
        关键词：Phenol formaldehyde resin;Mole ratio;free formaldehyde   
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        发布时间：2021-02-08
      • NI Xiao xiao,YIN Ning
        Issue 4, Pages: 22-23(2001) DOI: 10.19455/j.mcgy.2001.04.007
        摘要：Aiming to the special application requirement of pencil slat production, the preparation of paraffin emulsion for pencil slat was discussed, considering selection and dose of emulsifier and emulsification temperature.The effect of emulsion application in pencil slat production was also measured.  
        关键词：Paraffin emulsion;Pencil slat;Emulsifier   
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        发布时间：2021-02-08
      • YANG Qing,XING Shu min,SHI Rong
        Issue 4, Pages: 24-26(2001) DOI: 10.19455/j.mcgy.2001.04.008
        摘要：In this article, the types of material in furniture manufacture industry were introduced briefly. According to an investigation of the use of current furniture making material, the contradiction between supply and demand of wood in China and consumer’s consumption patterns for furniture were analyzed. It puts forward suggestions for furniture material development.  
        关键词：furniture;Material;Investigation   
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        发布时间：2021-02-08
      • SHEN Li ming,ZHANG Pei
        Issue 4, Pages: 27-29(2001) DOI: 10.19455/j.mcgy.2001.04.009
        摘要：According to the investigated facts of 132 occupational accidents in 3 wood industry enterprises, the related work area, the dangerous objects, the injured body part, as well as the cause and emphasis of accidents were analyzed. The results showed that the most accidents happened by the activity machine operation among the 5 accidents related work areas, it took a 50% of the total amount of accidents. The lost working day for every light accident amounted 26.5 days on average; and the lost working day for every heavy accident amounted 138 days on average. The analysis also showed that 72% of the accidents were related with subjective factor of workers.  
        关键词：wood industry;Occupational accident;Accident analysis   
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        发布时间：2021-02-08
      • LI Zeng chao,QIU Zeng chu,WU Meng
        Issue 4, Pages: 30-31(2001) DOI: 10.19455/j.mcgy.2001.04.010
        摘要：This article illustrates the technology of rapid drying of 2.5 cm thick oak (Quercus) flooring blanks with indirect furnace heating, in which three phased continuous heating drying schedule and the conditioning treatment were utilized. The results showed that the drying time could be shortened by 30%, it was also superior in quality and easy in operation in the comparison with ordinary kiln.  
        关键词：oak;drying;drying schedule;Conditioning   
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        发布时间：2021-02-08
      • HUANG Qing feng
        Issue 4, Pages: 32-34(2001) DOI: 10.19455/j.mcgy.2001.04.011
        摘要：The classification and the new manufacture procedure of the main decorative veneered plywood were formulated. The main defects and development trend of decorative veneered plywood were also discussed.  
        关键词：decorative veneered plywood;Manufacture Technology   
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        发布时间：2021-02-08
      • LI Ci sheng
        Issue 4, Pages: 35-36(2001) DOI: 10.19455/j.mcgy.2001.04.012
        摘要：This article describes the main use and manufacturing process of sawing, drying and glued lumber of fast growing small diameter logs at furniture industry.  
        关键词：Small diameter log;furniture;glued lumber   
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        发布时间：2021-02-08
      • LI Li,GUO Jian fang
        Issue 4, Pages: 37-38(2001) DOI: 10.19455/j.mcgy.2001.04.013
        摘要：A series introduction for several famous Italian sanding equipment manufacturing companies will be presented in this column respectively. In this issue, the general situation of Costa Levigatrici Company and the technical performance of its sanding machine from 5 different series were introduced briefly.  
        关键词：Sanding machine;Costa Levigatrici   
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        发布时间：2021-02-08
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