最新刊期
      期 0 ， 2020
      • LUO Jian ju,PENG Yan,LUO Jian zhong
        Issue 3, Pages: 3-6(2000) DOI: 10.19455/j.mcgy.2000.03.001
        摘要：In this paper, Eucalyptus chips were used as main raw materials for the manufacture of fire proof and water resistant wood based composite board by moulding process. Effects of the ratios of wood chip to cement (W/C), water to cement (M/C) and adhesive, annexing agent, water resistant agent, dying agent and curing conditions on properties of the board were examined respectively. The results as follows: (1)The appropriate parameters were W/C=0.3, M/C =0.35, and the consumption of adhesive, annexing agent and water resistant agent were 5%～10%, 0.45% ～0.5% and 1.5% of cement weight respectively; (2) W/C ratio not only had great influence of board formation, but also the mechanical properties of the board; (3) board properties could be improved significantly by adding adhesive, annexing agent and water resistant agent and curing under alkaline conditions with sufficient water; (4) main properties of the board, such as surface hardness and resistance to abrasion, fire, decay and water exceeded normal solid wood flooring markedly. It is suitable as the materials of flooring and wall skirt.  
        关键词：Wood based composite board;Manufacturing technology;Fir proof;Water resistant;eucalyptus   
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        发布时间：2021-03-12
      • WU Zhang kang,ZHANG Hong jian,HUANG Su yong,YUAN Yong sheng
        Issue 3, Pages: 7-10(2000) DOI: 10.19455/j.mcgy.2000.03.002
        摘要：The effects of fiber ratio of bamboo to wood, compression ratio and fibers screening distribution on properties of MDF from bamboo and wood(BW MDF)were studied with single factor analyzing method. Experimental results showed:high grade BW MDF could be produced under proper technological conditions. MOE,MOR and TS of the board increased with decreased IB when the ratio of bamboo fibers to wood fibers grew. IB was the lowest when the ratio equaled l. MOE,MOR,IB and TS of the board increased with growing of compression ratio. In general, the quality of the board made of more fine fibers whose fiber screening distribution mostly concentrated in 28～90 mesh were better than that made of longer and course fibers whose fiber screening distribution mostly concentrated in 2～20 mesh and 5～28 mesh.  
        关键词：BW MDF;Fiber ratio of bamboo to wood;Compression ratio;Fibers screening distribution   
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        发布时间：2021-03-12
      • MA Lian xiang,ZHOU Ding guo
        Issue 3, Pages: 11-12(2000) DOI: 10.19455/j.mcgy.2000.03.003
        摘要：Using the compound material mechanics, the three dimensional space problem of glued wood based beam was modified to general plane problem, the stress field distribution of the beam under different loading and additional stress generated by anisotropy property of wood was analyzed. With limit value method, the paper has evaluated the largest stress and its site, and supplied theoretical basis for use of wood based material in architectural engineering.  
        关键词：Glued wood based beam;Anisotropy;Bending characteristics;Stress and strain   
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        发布时间：2021-03-12
      • FEI Ben hua\+1,JIANG Ze hui\+1,RUAN Xi gen 2
        Issue 3, Pages: 13-15(2000) DOI: 10.19455/j.mcgy.2000.03.004
        摘要：In this paper, the microfibril angle and growth ring density of Ginkgo ( Ginkgo biloba ) wood were studied. The results showed that the microfibril angle of Ginkgo was 18.5°, the variation trend was bigger in earlywood than latewood with inter ring while the trend was regularly decreased from pith to bark with intra ring. There was close relation among microfibril angle and cambium year and ring density, five models were established. The results of the study will be helpful to the cultivation and utilization of Ginkgo plantations.  
        关键词：Ginkgo wood;Microfibril angle;Growth ring density;Correlation models   
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        发布时间：2021-03-12
      • WU Yu zhang,WU Shu hong,YE Ke lin
        Issue 3, Pages: 16-18(2000) DOI: 10.19455/j.mcgy.2000.03.005
        摘要：This paper deals with the development trends of wood modification in China including multi functional modification agents, environment protection, efficient and long effect treatment, economical use and expanding application of wood. To further develop Chinese wood industry, more attention must be paid to the combination of research and application and to the improvement of technology.  
        关键词：Wood protection;Function modification;Development trend   
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        发布时间：2021-03-12
      • HU Yu hui
        Issue 3, Pages: 19-20(2000) DOI: 10.19455/j.mcgy.2000.03.006
        摘要：The properties and applications of OSB and the status of development of OSB in China and abroad are presented. It is proposed that in the line with the development trend of wood based panels and the of forestry sustainable development strategy, OSB has great development potential in China.  
        关键词：Oriented strand board   
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        发布时间：2021-03-12
      • JIANG Xiao mei,ZHANG Li fei
        Issue 3, Pages: 21-23(2000) DOI: 10.19455/j.mcgy.2000.03.007
        摘要：The background, justification, development and specific objectives, implementation and outputs of ITTO Project “The Identification, Properties and Uses of Tropical Timber Imported to China ” implemented by Research Institute of Wood Industry, Chinese Academy of Forestry were presented in this paper. The main objectives of the project are to establishing the databases of timber from tropical zone and compile the handbooks. More than 600 species woods were described in these books. These outputs are being and will be disseminated to Chinese trade agencies, producers, end users and researchers in order to promote tropical wood trade between tropical timber producer countries and China. Every species was described in the handbook according to following aspects: wood names (including Chinese names, Latin names, commercial names and local names); tree habit and distribution; wood anatomical features (macro and micro features); wood properties (density, shrinkage, drying, preservation and processing); main use. Three microphotographs (cross, tangential and radial section) were given for each species in order that users identify the wood correctly. Above mentioned information in the handbook was stored in computer disk. The main functions of the database both in Chinese and English are as the following: retrieval of tree species according to wood anatomical feature; retrieval of suitable tree species according to wood users; retrieval of provenance, properties and uses according to tree species; retrieval of woods according to countries; mutual retrieval of Latin names, commercial names and local names; indication or printing of the tree species collected and all their information.  
        关键词：Tropical wood;Import;ITTO projects   
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        发布时间：2021-03-12
      • MIAO Ping,SHI Bo zhang
        Issue 3, Pages: 24-26(2000) DOI: 10.19455/j.mcgy.2000.03.008
        摘要：Moisture content ( MC ) is predicted by unsteady state diffusion principle of water in wood and its approximate calculation equations. The method is that first, the MC of small samples of the species is measured during drying and diffusion coefficient is calculated, then the MC of each periods during drying can be calculated with diffusion coefficient.  
        关键词：Unsteady state diffusion;Diffusion coefficient;moisture content   
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        发布时间：2021-03-12
      • LIN Qiao jia,HE Xiu shan,WU Chun chu,HE Yong
        Issue 3, Pages: 27-30(2000) DOI: 10.19455/j.mcgy.2000.03.009
        摘要：This paper studies the technology for making nonpoisonous low density Chinese Fir ( Cunninghamia lanceolata) particleboard with diisocyanate adhesive. The effects of adhesive consumption, hot pressing temperature,time and pressure of hot pressing, moisture content of particles on properties of board were discussed. The result showed,when the density of board was 0.43～0.48 g/cm 3, the adhesive consumption was only 5%. Particles with moisture content lower than 25% were suitable for use. The manufactured particleboard was nonpoisonous with good water resistance.  
        关键词：Diisocyanate(MDI);Chinese Fir;particleboard   
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        发布时间：2021-03-12
      • DONG Yu hua 1,MA Ke jun 2,LU Bin 3,TANG Zhao qun 3
        Issue 3, Pages: 33-34(2000) DOI: 10.19455/j.mcgy.2000.03.011
        摘要：CK 2 abrasion proof resin is a new type of paint used specially for coating solid wood flooring. The experiment demonstrates that the wear resistance of flooring with CK 2 abrasion proof resin increased 3～4 times as against the normal product.  
        关键词：Solid wood flooring;CK-2 abrasion proof resin;Abrasion resistance   
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        发布时间：2021-03-12
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