最新刊期
      期 0 ， 2020
      • YE Ke-lin,LU Jian-xiong
        Vol. 24, Issue 6, Pages: 1-3(2010) DOI: 10.19455/j.mcgy.2010.06.001
        摘要：Larch is one of the most important commercial forestry species in China.Research development,processing and application technology for larch dimension lumber was introduced in this paper.Sponsored by the China National Program for Applied Research,this study focused on lumber sawing,drying,grading,non-destructive testing,static testing of mechanical performance and connection.This work initiated construction of the key and common technological platform for processing dimensional lumbers from domestic resources.  
        关键词：commercial larch forest;dimension lumber;processing optimization;grading;non-destructive testing;mechanical performance testing;connection   
        9
        |
        78
        |
        7
        <HTML>
        <L-PDF>
        <引用本文> <批量引用> 6623495 false
        发布时间：2021-02-08
      • CHEN Ren-wang,LI Hui-ming,ZHU Kun,YAN Ting
        Vol. 24, Issue 6, Pages: 45-48(2010) DOI: 10.19455/j.mcgy.2010.06.014
        摘要：DCP,a chemical commonly used in preservatives and pesticides,shows some potential in the wood preservative industry.The authors evaluated its performance on mold and decay inhibition,termite resistance,metal corrosion,leachability,flame retardance,and harmful lumber substances with DCP preservative.The results showed that mold inhibition,termites resistance and dimensional stability of the treated lumber samples were better than samples treated with alkaline copper quaternary（ACQ）preservatives.Animal toxicity and water biological toxicity of DCP preservative were also evaluated and the results met the requirements of Chinese standards.  
          
        8
        |
        67
        |
        0
        <HTML>
        <L-PDF>
        <引用本文> <批量引用> 6623437 false
        发布时间：2021-02-08
      • Vol. 24, Issue 6, Pages: 55-58(2010) DOI: 10.19455/j.mcgy.2010.06.015
        摘要：木材作为四大材料中不仅具有可塑性强、可回收利用、可循环利用等诸多特性,而且是唯一可再生、可降解的生物质材料,其安全、经济、舒适性和对节能环保的贡献率,是其他材料所无可比拟的,因此,越来越多的木材替代钢材、水泥和塑料,走进人类生活。随着木材的大量使用,人们不免为木材供给以及由于砍伐森林而造成生态环境的影响担忧。为此,许多国家尤其是林业发达国家,纷纷建立了森林可持续经营体系。马来西亚是世界上最大的热带木材生产及出口国之一。在这个国度里,业主们是如何在良好的森林管理基础上,提供热带木材的。带着这个问题,笔者于2010年10月,参加了由马来西亚木材理事会（MTC）组织的马来西亚森林工业考察项目,走访了当地的贸易、林业、科研机构及多家企业,旨在从不同层面了解其森林可持续管理体系与木材利用程序。  
          
        2
        |
        29
        |
        0
        <HTML>
        <L-PDF>
        <引用本文> <批量引用> 6623482 false
        发布时间：2021-02-08

        Research & Development

      • XU Jian-ying1,ZENG Min1,UMEMURA Kenji2,KAWAI Shuichi2
        Vol. 24, Issue 6, Pages: 4-7(2010) DOI: 10.19455/j.mcgy.2010.06.002
        摘要：Binderless cotton stalk particleboard was developed in this study using steam-injection pressing.The effects of board density,steam pressure,and steam-injection time on the properties were also investigated.The results showed that the board modulus of rupture（MOR）,modulus of elasticity（MOE）,and internal bond strength（IB）were highly dependent upon the board density.Higher steam pressure and longer steam-injection time were found to improve thickness swelling（TS）of the binderless particleboard.  
        关键词：cotton stalk;steam-injection pressing;binderless particleboard   
        7
        |
        151
        |
        10
        <HTML>
        <L-PDF>
        <引用本文> <批量引用> 6623648 false
        发布时间：2021-02-08
      • LI Yi-ping1,LIU Guan1,GUO Hong-wu1,LI Chun-sheng2
        Vol. 24, Issue 6, Pages: 8-11(2010) DOI: 10.19455/j.mcgy.2010.06.003
        摘要：Wood products used in a bathroom must have good dimensional stability and water resistance.To meet the growing market demand for decorative wood used for this application,the authors made some reconstituted lumber using resin impregnated veneer from plantation grown birch.They evaluated the influence that resin solids content,resin impregnation method,and hot-pressing pressure had on dimensional stability of the reconstituted birch veneer lumber.The results showed that using 40% resin solids content and 1.0 MPa roll pressure（compression ratio between 50%～70%）conditions,the lumber had a lower volume expansion rate（6.2 %）than solid ash and oak lumber.  
        关键词：birch veneer;Resin;impregnation;roll pressing;dimensional stability   
        20
        |
        104
        |
        3
        <HTML>
        <L-PDF>
        <引用本文> <批量引用> 6623521 false
        发布时间：2021-02-08
      • WU Guo-feng,JIANG Yi-fei,ZHANG Hao,ZHOU Shu-ke,PU Jun-wen
        Vol. 24, Issue 6, Pages: 12-14(2010) DOI: 10.19455/j.mcgy.2010.06.004
        摘要：The authors impregnated radiata pine（Pinus radiata,from New Zealand）logs with a modified urea solution to improve lumber performance,sawed the logs into dimensional lumber after chemical treatment,and then densified the lumber with a multilayer press at 90 ℃ in a drying kiln.The densified lumber bending strength,modulus of elasticity,compressive strength parallel to wood grain,and drying qualities were improved considerably and met the specification of the Chinese national standard GB/T 6491-1999 for second grade lumber.  
        关键词：Pinus radiata;chemical modification;multilayer press drying;wood densification   
        14
        |
        147
        |
        2
        <HTML>
        <L-PDF>
        <引用本文> <批量引用> 6623535 false
        发布时间：2021-02-08
      • YE Hong1,XIE Bao-yuan1,ZHAO Rong-jun3,ZHOU Hai-bin3,FEI Ben-hua2
        Vol. 24, Issue 6, Pages: 15-17(2010) DOI: 10.19455/j.mcgy.2010.06.005
        摘要：Mechanical properties of different truss-plated lumber configurations were evaluated according to GB 50005-2003.Plate size influence on tension-splice joint performance was also studied.The results showed that the ultimate bearing capacity and joint stiffness both increased as plate length or width increased.It was found that plate length significantly influenced the failure mode while the plate width did not.However,the plate width and tooth length indicated a significant relationship with the joint strength.  
        关键词：metal plate connected joint;plate size;mode of failure;ultimate strength;stiffness   
        8
        |
        53
        |
        7
        <HTML>
        <L-PDF>
        <引用本文> <批量引用> 6623382 false
        发布时间：2021-02-08

        Discussion & Suggestion

      • LI Yang
        Vol. 24, Issue 6, Pages: 18-20(2010) DOI: 10.19455/j.mcgy.2010.06.006
        摘要：Laminated flooring samples were conditioned in different relative humidity（from 30% to 90%）at（23±2）℃ and their dimensional stability was evaluated.The results showed that when the relative humidity was increased from 30% to 90%,the samples had much bigger increase rate of thickness swelling than that of longitudinal expansion.  
        关键词：Laminate flooring;relative humidity;dimensional stability   
        7
        |
        115
        |
        2
        <HTML>
        <L-PDF>
        <引用本文> <批量引用> 6623461 false
        发布时间：2021-02-08
      • GAO Jian-min,YI Song-lin,ZHANG Bi-guang,HU Chuan-kun
        Vol. 24, Issue 6, Pages: 21-24(2010) DOI: 10.19455/j.mcgy.2010.06.007
        摘要：The authors reviewed the present research status on lumber energy-saving drying technology,and summarized the recent research achievements of wood energy-saving drying.They considered that solar drying technology was suitable for pre-drying,and that phase change thermal storage was an effective way to solve the intermittent solar drying problem.A Solar-heat pump and a solar-conventional combination were ideal drying processes.A dehumidifier was commonly used in heat recycling and it was found that it could save up to 40%drying energy.The oscillating-flow heat pipe applied in heat recycling was cost effective equipment and could save 20%～50% drying energy.  
        关键词：lumber energy-saving drying;solar energy;technical progress;development trend   
        12
        |
        520
        |
        13
        <HTML>
        <L-PDF>
        <引用本文> <批量引用> 6623548 false
        发布时间：2021-02-08
      • CAO Ping-xiang
        Vol. 24, Issue 6, Pages: 25-28(2010) DOI: 10.19455/j.mcgy.2010.06.008
        摘要：This article describes the typical structures and frames of European-style wooden windows.It also illustrates the unique equipment layout and L-shape processing procedure for manufacturing them.The characteristics,performance,and processing parameters of each piece of equipment is analyzed.  
        关键词：European-style wooden window;processing center;key machine   
        8
        |
        114
        |
        5
        <HTML>
        <L-PDF>
        <引用本文> <批量引用> 6623604 false
        发布时间：2021-02-08
      • DUAN Xin-fang1,YU Hua-qiang1,ZHAO Zhao-xia1,WANG Zheng-guo2,CHENG Qiang1
        Vol. 24, Issue 6, Pages: 29-32(2010) DOI: 10.19455/j.mcgy.2010.06.009
        摘要：The past and current statuses of the wood preservation industry in the USA were reviewed in this study.The system for wood preservation standards and its characteristics were introduced.This study also provided suggestions and comments for establishing wood preservation standards in China  
        关键词：the USA;Wood preservation;industry;standards   
        8
        |
        201
        |
        4
        <HTML>
        <L-PDF>
        <引用本文> <批量引用> 6623591 false
        发布时间：2021-02-08

        Piactical Techniques

      • CHEN Tai-an1,WANG Yun-xin1,PANG Shu-sheng1,Andrew Karalus2
        Vol. 24, Issue 6, Pages: 33-35(2010) DOI: 10.19455/j.mcgy.2010.06.010
        摘要：Douglas-fir lumber in size of 5 000 mm×100 mm×50 mm were used to investigate the effect of corewood proportion（CP）and board type classified by the growth ring curvature on distortion degrade with drying.Distortion tolerances and grading was conducted based on NZS 3631:1988.Results show that lumber with high CP shows high distortion degrade which was mainly caused by spring,especially for quarter sawn board.Results also show that air-drying of log in yard can fill the gap of moisture between sapwood and heartwood,moisture content ater drying can meet the requirement for structural use.  
        关键词：plantation douglas-fir lumber;distortion degrade with drying;juvenile wood proportion   
        9
        |
        81
        |
        4
        <HTML>
        <L-PDF>
        <引用本文> <批量引用> 6623509 false
        发布时间：2021-02-08
      • QU Yan-chun1,LIU Ying-fu2,LONG Ling1
        Vol. 24, Issue 6, Pages: 36-38(2010) DOI: 10.19455/j.mcgy.2010.06.011
        摘要：The light fastness of laminated floorings made with four kinds of decorative paper and a surface-abrasion-resistant paper,coated by UV paint were examined using a xenon-arc lamp.The influences of decorative paper,abrasion-resistant paper,UV coating and substrate（HMDF）thickness on UV flooring stability were analyzed.The results showed that the decorative papers provided an important effect on the flooring light fastness,while abrasion resistant paper had a negative influence on the flooring light fastness.It was also found that the UV painted flooring had better light resistance than the paper laminated flooring.The substrate thickness also affected the flooring UV resistance when it was less than 6 mm.  
        关键词：Laminate flooring;light fastness;decorative paper;surface abrasion resistant paper;coating;substrate thickness   
        11
        |
        165
        |
        7
        <HTML>
        <L-PDF>
        <引用本文> <批量引用> 6623576 false
        发布时间：2021-02-08
      • YU Xue-fei1,JIA Dong-yu1,YI Song-lin1,HE Zheng-bin1
        Vol. 24, Issue 6, Pages: 39-41(2010) DOI: 10.19455/j.mcgy.2010.06.012
        摘要：Larch lumber was treated at 160 to 220 ℃ for 1 to 4 hours and then evaluated for aberration（ΔE*）,（ΔH*）,（ΔC*）and mechanical properties.The test results showed that the high temperature and duration had remarkable effects on the specimen’s ΔE*,ΔH*,and ΔC*.The treated samples density,weight loss,and mechanical properties changed considerably as the temperature increased and the heating time was extended.  
        关键词：Larix gmelinii;heat-treated;Wood discoloration;mechanical properties   
        6
        |
        144
        |
        9
        <HTML>
        <L-PDF>
        <引用本文> <批量引用> 6623469 false
        发布时间：2021-02-08
      • XIONG Xian-qing,SHEN Li-min
        Vol. 24, Issue 6, Pages: 42-44(2010) DOI: 10.19455/j.mcgy.2010.06.013
        摘要：Strawboard made from waste wheat or rice straw has shown increasing visibility in the furniture industry.Surface quality of reconfigurated strawboard panels with a polyurethane（PU）finish was investigated.Two surface reconfigurations of overlaying veneer and resin impregnated paper before PU coating were examined.The adhesion,gloss,and hardness of the coating film were tested.It was noticed that the strawboard coated with white lacquer exhibited the best surface performance.  
        关键词：strawboard;surface treatment;PU lacquer finish;performance   
        9
        |
        121
        |
        3
        <HTML>
        <L-PDF>
        <引用本文> <批量引用> 6623485 false
        发布时间：2021-02-08
      0