最新刊期
      期 0 ， 2020
      • YU Xue-fei,SUN Hua-lin,YU Wen-ji
        Vol. 25, Issue 4, Pages: 1-3(2011) DOI: 10.19455/j.mcgy.2011.04.001
        摘要：A new technology for making bamboo laminated veneer lumber was developed by the authors.Bambusa distegia and Phyllostachys heterocycla were used to make the veneer lumber for container flooring and wind blade applications.It was found that: 1) the laminated veneer lumber,made from bamboo without the outer and inner surfaces,showed superior performance than that made from all bamboo parts.2) The laminated veneer lumber made from Bambusa distegia had better performance than that made from Phyllostachys heterocycla.3) For the 30 mm-thick lumber made from Bambusa distegia,its mechanical properties increased as the density increased from 1.0 g/cm3 to 1.2 g/cm3,and could meet the national standard specifications for container flooring and wind blade making materials.  
        关键词：Bambusa distegia;Phyllostachys heterocycla;bamboo laminated veneer lumber（BLVL）;wind turbine blade;Container flooring   
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        发布时间：2021-02-08
      • Vol. 25, Issue 4, Pages: 59-61(2011) DOI: 10.19455/j.mcgy.2011.04.019
        摘要：德国科隆interzum展始于1959年,每两年一届,是针对木制品和家具生产及其原辅材料、室内装饰材料供应方面的全球性盛会之一和著名的专业展会,其展品范围之广,位居世界同类展会前列。2011年5月25日,2011科隆国际家具生产、木工及室内装饰材料展览会（interzum 2011）在科隆国际展览中心再度隆重开幕。在展馆的新闻中心,展会主办方——德国科隆展览公司,举行了简短的开幕新闻发布会,来自世界各地的数十家媒体代表到会,听取展会负责人介绍irnterzum展的发展历程,以及本届展会的展馆分布、参展情况等。笔者作为《木材工业》的代表,应主办方邀请,参观了展会的盛况。  
          
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        发布时间：2021-02-08
      • Vol. 25, Issue 4, Pages: 62-63(2011) DOI: 10.19455/j.mcgy.2011.04.020
        摘要：汉诺威国际林业与木工展（Ligna）,由德国汉诺威展览公司主办,以每两年集中展示木材加工技术及装备的最新进展和发展趋势而著名,展示范围从林木采伐、制材、木材分等、实木加工（干燥、阻燃）、人造板及其表面加工等木质材料加工制造,到橱柜、家具、木地板、木门窗、木结构构件和生物能源等终端产品的制造,涵盖整个产业链上所有与木材相关的加工技术、制造装备、原辅料、配件和技术方案。多年的沉淀,及与德国木工机械制造商协会（VDMA）等多家行业协会、团体的共同协作,使Ligna成为业内公认的、最具国际影响力的专业展会。笔者慕名应邀前往观展。  
          
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        发布时间：2021-02-08

        Research & Development

      • LIN Tao,GUO Wen-jing,GAO Li,CHANG Liang,WANG Zheng
        Vol. 25, Issue 4, Pages: 4-7(2011) DOI: 10.19455/j.mcgy.2011.04.002
        摘要：The authors processed cotton stalks into fiber and particles,and combined them with recycled plastics,polypropylene（PP）and polyethylene（PE）,to prepare cotton stalk fiber/plastic composites by hot pressing.The composite panel properties were tested to evaluate the effects caused by the cotton stalk shapes and panel processing factors.The results showed that: 1) The composites made from the cotton stalk particles had better properties than those made from cotton stalk fibers;2) Density,hot-pressing temperature and the cotton stalk/plastic ratio had a great effect on the cotton-stalk-fiber/polypropylene panel properties.Under optimized conditions,the cotton-stalk-fiber /polypropylene panel properties exceeded the specifications of national standard GB/T 4897.6-2003,GB/T 4897.7-2003 for structural particleboards.  
        关键词：cotton stalk;recycled plastic;composite;processing factors   
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        发布时间：2021-02-08
      • GAO Li,WANG Zheng,LIN Tao,LI Yang
        Vol. 25, Issue 4, Pages: 8-10(2011) DOI: 10.19455/j.mcgy.2011.04.003
        摘要：Highland bamboo（Arundinaria alpine） is one of the most important bamboo species in Africa.To investigate its feasibility in structural applications,the authors tested its physical-mechanical properties when made into laminated bamboo boards and bamboo plywood.The properties of both original and composite bamboo products were tested and compared with Moso bamboo（Phyllostachys pubescens）.The results showed that Highland bamboo exhibited higher stiffness and shrinkage results than Moso bamboo.Highland bamboo laminated boards had properties similar to high-grade structural laminated veneer lumber when evaluated against the JAS standard（MAFF,Notification No.237,2003）.Bamboo plywood also exhibited excellent properties exceeding the specifications at the OSB/4 Level in the European standard（EN 300-2006）.  
        关键词：Arundinaria alpina;structural use;laminated board;plywood   
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        发布时间：2021-02-08
      • LU Liu1,LI Qin2,ZHANG Ming3,CHEN Peng4,WU Zhi-hui1,Gu Qun4
        Vol. 25, Issue 4, Pages: 11-14(2011) DOI: 10.19455/j.mcgy.2011.04.005
        摘要：Biocomposites were made using poly（hydroxybutyrate-co-valerate）（PHBV）,natural bamboo fiber,epoxidized soybean oil（ESO）,a coupling agent and a nucleating agent.The effect of ESO contents on the processing and properties of the biocomposites was studied.The results showed that the processing properties of biocomposites were greatly improved with the addition of ESO;the optimum content of ESO was 0.15 times the quatity of PHBV.  
        关键词：epoxidized soybean oil;bamboo flour;poly（hydroxybutyrate-co-hydroxyvalerate）;mechanical property;heat deflection temperature   
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        发布时间：2021-02-08
      • WANG Ming1,LIU Jun-liang2,CHAI Yu-bo2,GAO Jian-min1
        Vol. 25, Issue 4, Pages: 15-17(2011) DOI: 10.19455/j.mcgy.2011.04.006
        摘要：The authors tested the physical and mechanical properties and fire resistance of Cryptomeria fortunei boards following impregnation with melamine-urea-formaldehyde（MUF） resin and a mixture of MUF/boric acid/borax（MBB）.Results showed that by increasing the concentration of the MUF and MBB solutions,the weight,bending strength,modulus of elasticity,modulus of rupture,dimensional stability and fire resistance of treated wood were improved.  
        关键词：cryptomeria fortunei;melamine-urea-formaldehyde resin;Boric acid;borax;modification   
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        发布时间：2021-02-08
      • YAN Cheng-lin,ZHOU Yu-cheng,HOU Xiao-peng,MIAO Hu
        Vol. 25, Issue 4, Pages: 18-21(2011) DOI: 10.19455/j.mcgy.2011.04.007
        摘要：A control system,based on a microcontroller for a measuring instrument,was developed for formaldehyde and other volatile organic compound emissions.This article described the system hardware construction,software processing,and how to combine them in the system to realize real-time measuring and automatic controlling.The application of this system,for a 1-cubic formaldehyde measuring system,showed that the temperature and humidity control reached ±0.5% and ±1%,respectively.The cost for this micro-controlled instrument was reduced compared with that for a programmable logic controller.An intelligent man-machine interface,based on a touch screen,was also designed to make this an easily operated system.  
          
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        发布时间：2021-02-08

        Discussion & Suggestion

      • DUAN Xin-fang,YE Ke-lin,ZHANG Yi-sheng
        Vol. 25, Issue 4, Pages: 22-25(2011) DOI: 10.19455/j.mcgy.2011.04.008
        摘要：The authors introduced definitions and classification of biomass as well as biomass materials.The present situation and issues of biomass materials industry in China were summarized.Proposals to develop forestry biomass materials industry were put forward.  
        关键词：biomass materials;industry;present situation;future trends   
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        发布时间：2021-02-08
      • YE Cong,WU Zhi-hui,ZHANG Cheng-feng
        Vol. 25, Issue 4, Pages: 26-29(2011) DOI: 10.19455/j.mcgy.2011.04.009
        摘要：The authors analyzed the consumer demand for the Chinese-style Hongmu furniture market in China.They also presented a concept and some innovative design styles for new Chinese-style furniture.  
        关键词：new Chinese-style Furniture;Hongmu furniture;design   
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        发布时间：2021-02-08
      • LONG Ling,JIA Zhu-xian
        Vol. 25, Issue 4, Pages: 30-33(2011) DOI: 10.19455/j.mcgy.2011.04.010
        摘要：The authors analyzed the accuracy and detection limit to determine phenol in 4-amino-antipyrine by spectrophotometry and HPLC.The results showed that the precision and accuracy of both HPLC and spectrophotometry were very high.Spectrophotometry was easy to operate,had a lower limit of detection and lower cost.Spectrophotometry was recommended to determine phenol emission from PF wood products.  
        关键词：phenol;4-amino-antipyrine spectrophotometry;high-performance liquid chromatography（HPLC）;precision;accuracy;limit of detection   
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        发布时间：2021-02-08
      • FU Yue-jin,LV Bin,SHI Yan-ping,HE Jian,XU Qing,LI Yang,WU Yan-mei
        Vol. 25, Issue 4, Pages: 34-37(2011) DOI: 10.19455/j.mcgy.2011.04.011
        摘要：Outdoor wood-based panels for building template and packaging applications are beginning to increase in the Chinese market.This article summarizes the main product categories and distribution for outdoor panels in China.It also illustrates the standard in both China and developed countries.Currently,the Chinese standards only concern common property testing methods,while the overseas standards regulate specific property testing methods such as accelerated aging and safety evaluation.It suggests that a standard system for Chinese outdoor panels including production and performance test methods should be established.  
        关键词：outdoor wood-based panel;test method;standard system   
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        发布时间：2021-02-08
      • YU Hai-xia1,FANG Chong-rong1,XU Man-ping1,DUAN Fen2,ZHOU Kan-kan1
        Vol. 25, Issue 4, Pages: 38-40(2011) DOI: 10.19455/j.mcgy.2011.04.012
        摘要：In the Chinese National standard for laminated flooring,equalization treatment is not a necessary processing method.Thus,the authors conducted an experiment to investigate how board property testing results could be influenced by an equalization treatment.They selected a laminated flooring,a high density fiberboard（HDF） substrate and three equalizing conditions: standard temperature and relative humidity（（20±2） ℃,（65±5）%）,low temperature and low relative humidity（（10±2） ℃,（30±5）%）,and high temperature and high relative humidity（（30±2） ℃,（90±5）%）.The results indicated that,compared with the specimens treated under standard conditions,low-condition treated specimens showed relatively higher properties while the high-condition treated specimens showed lower properties.The results suggested that an equalization treatment is not necessary for testing board density because the difference among different-condition-treated specimens was very small.However,equalization treatment should be done for board thickness swelling rate testing for which was highly influenced by treating conditions.  
        关键词：laminate flooring;substrate;high density fiberboard;equilibrium treatment;property   
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        发布时间：2021-02-08

        Piactical Techniques

      • CHEN Zhi-lin1,LI Shuang-chang1,LI Jie2
        Vol. 25, Issue 4, Pages: 41-43(2011) DOI: 10.19455/j.mcgy.2011.04.013
        摘要：The authors evaluated the free formaldehyde concentration at different sections of a MDF production line with capacity of 200 000 m3/a,with special attention in the area around the forming machine and hot-press.The results showed that the formaldehyde concentration was less than 0.12mg/m3 in the control room and defibrator workroom which means it can meet the standard requirements.The formaldehyde concentration in the store house was 0.16 mg/m3,thus requiring ventilation.The formaldehyde concentration in the forming and hot-pressing areas was 0.33mg/m3 and 0.86 mg/m3,respectively,requiring measures to improve the ventilation or to add worker safety facilities.  
        关键词：Hot press;free formaldehyde content;planar distribution   
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        发布时间：2021-02-08
      • LIU Cong,ZHANG Yang,YANG Yu-wei
        Vol. 25, Issue 4, Pages: 44-46(2011) DOI: 10.19455/j.mcgy.2011.04.014
        摘要：Micro/nano fibrils were used to modify melamine formaldehyde（MF） resin and a soybean resin as a surface coating on plywood face layer veneer and the plywood bonding adhesive,respectively.The authors evaluated the color fastness of the dyed poplar veneer face layer,the surface wear resistance and the plywood bond strength.The results showed that adding the micro/nano fibrils to both the MF and soybean resins improved the color fastness and the surface wear resistance as well as enhancing the poplar plywood bond strength.  
        关键词：micro/nano fibrils;dye;soybean glue;poplar plywood;color fastness;wear-resistant surface;Bond strength   
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        发布时间：2021-02-08
      • LI Min,LI Xiao-wen,QIN Shao-shan,LI Jia-ning,LIN Wei-fu,XIE Gui-shui
        Vol. 25, Issue 4, Pages: 47-49(2011) DOI: 10.19455/j.mcgy.2011.04.015
        摘要：In order to improve rubber wood（Hevea brasiliensis） biological durability,the authors studied the effect of steam heat treatment（170215 ℃） on the weight,color,pH value and moisture content of heat-treated rubber wood.The results indicated that with increasing temperature,the mass loss rate and chromatic aberration △E of the samples increased,but the color become darker,brightness L*,equilibrium moisture content and pH value decreased.  
        关键词：heat treatment;Rubber wood;mass loss;color;pH value;equilibrium moisture content   
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        发布时间：2021-02-08
      • ZHANG Li-bin,GAO Rui-qing,LI Xiao-ling
        Vol. 25, Issue 4, Pages: 50-53(2011) DOI: 10.19455/j.mcgy.2011.04.016
        摘要：A series of vacuum drying tests were conducted on timbers of plantation larch.The authors studied the effect of vacuum pressure（200,400 mmHg） and initial medium drying temperatures（6188 ℃） on the drying rate and moisture content deviation of the specimens.The results showed that the drying rate and moisture content deviation of the samples,were optimized by vacuum drying technology.By increasing the initial temperatures,the drying rate increased,but the drying rate decreased when the drying medium temperature increased.  
        关键词：vacuum drying;larch;vacuum pressure;medium temperature;drying rate   
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