最新刊期
      期 0 ， 2020
      • Lei Deding Shi Jianping
        Issue 1, Pages: 2-7(1992) DOI: 10.19455/j.mcgy.1992.01.001
        摘要：The factors of thickness variation control are further studied by means of statistical analysis. The results indicated, the thickness square deviation affected by the single species (Masson′s pine) as raw materials instead of the mixed and uncontrolled SPecies decreased by 79%, so the raw materials is one of the key factors of thickness variation control; when the correlation of thickness with weight of boards become insignificant after the forming quality has been improved, the thickness variation coused by hot press could be distinguished from the forming unit, and then the basis could be provided for putting further measures into effect. The final thickness variation of the unsanded particleboard can come up to the standards from Siempelkamp Co of Germany and meet elementary requirements of international market. The above results have confirmed the practicality and reliability of using statistical methods to diagnose the factors of thickness variation control in particleboard.  
        关键词：PanicleIeboard;Thickness variation;Raw materials;weight fluctuation   
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        发布时间：2021-03-12
      • Issue 1, Pages: 7(1992) DOI: 10.19455/j.mcgy.1992.01.002
        摘要：<正> 林产品在美国经济地位中位居第四,对美国的发展起主要作用。美国拥有许多木材加工先进技术,但在过去十年中,由于来自外国的基础研究和应用研究的竞争增加,美国的竞争优势在削弱。最  
          
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        发布时间：2021-03-12
      • Zhang Yi
        Issue 1, Pages: 8-11(1992) DOI: 10.19455/j.mcgy.1992.01.003
        摘要：A quantitive analysis on tannin contents of 7 kinds of wooden materials and their wafer extractives was given in this study. The results indicated that there are no significant relationship between, the tannin contents from water extractires of the wooden materials and setting of gypsum slurry as the strength of gypsum prism, although the hydrolyzable tannins can retarded the hydration of gypsum slurry severely. In addition, a result obtained from a experiment of manufacturing gypsum-bonded particlehoard made from populus showed that 80% of commercial retarder Retardan P can be replaced by the water, extractives-from oak barks.  
        关键词：Water extractives;Tannin content;Cypsum slurry;Retarder   
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        发布时间：2021-03-12
      • Wang Huafu Zhou Yue
        Issue 1, Pages: 12-16(1992) DOI: 10.19455/j.mcgy.1992.01.004
        摘要：In this article, the density of wooden raw materials, pH and buffering capacity of water extractives, bulk density of particles from 10 wood species were determined, After studying the wood species, amount of resin, catalyst and wax in particleboard separately, the optimized manufacturing process-parameters of the boards from these wood species were introduced.  
          
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        发布时间：2021-03-12
      • Huang Zeen Sun Zhenyuan
        Issue 1, Pages: 17-20(1992) DOI: 10.19455/j.mcgy.1992.01.005
        摘要：In this study, three model compounds of urea-formaldehyde resin, such as methylene diurea, Uron and tetrahydro-5-ethyl-2(1)-s-triazone, were synthesized. The rate of hydrolysis in pH 4.0 buffer solution at 80℃ was measured with iodimetric method. The result showed that the stability orderof the model compounds in acid condition was Uron>methyene diurea>tetrahydro-5-ethyl-2(1)-s-triazone.  
        关键词：UF resin;Model compound;Rate of hydrolysis   
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        发布时间：2021-03-12
      • Issue 1, Pages: 20(1992) DOI: 10.19455/j.mcgy.1992.01.006
        摘要：<正> 该项研究通过麦芽糖-琼脂或非琼脂作培养基的实验室试验,对细菌作为生物控制剂防治边材寓居真菌的防治效率进行了评估。通过细菌处理表现出的抑制霉菌与变色菌的作  
          
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        发布时间：2021-03-12
      • Huang Yuerui Cao Lanxing Li Shicheng
        Issue 1, Pages: 21-24(1992) DOI: 10.19455/j.mcgy.1992.01.007
        摘要：In China, there is considerable proportion of forests from which only small timber is available, most of them are hardwoods, With pith, larger crook, knot and other growth nature, the timber is subject to crack and difficult to be dried, this fact brings problem to drying process as well as following processes. Based on the experiments and industrial tests on oak, birch and some other species, it is found that high medium temperature treatment is not suitable for the small hardwood drying. The timber may be properly treated under lower intensity of water vaporisation with middle or low medium temperature and the variance of temperature in the direction of thickness of timber should be kept stable.  
        关键词：Small hardwogd timber;Drying proccss   
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        发布时间：2021-03-12
      • Issue 1, Pages: 24(1992) DOI: 10.19455/j.mcgy.1992.01.008
        摘要：<正> 光学的或激光的传感器已广泛应用于制材厂用以测量原木或板材的尺寸。现已装备起几百个这种应用光电扫描的非接触系统,其应用范围从比较简单的产品按尺寸检验分  
          
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        发布时间：2021-03-12
      • Zhang Houpei Wang Ping Yuan Yisheng
        Issue 1, Pages: 25-28(1992) DOI: 10.19455/j.mcgy.1992.01.009
        摘要：Applied test of window frames （Picea. jezoensis var. microsperrna） showed: preservatives PPA, CCB, and CCAs can be used in the preservation of window and door, double vacuum process was available for PPA; full cell-pressure processes with CCAs and CCB were suitable. Retention of the preservatives in wood were 6 kg/m3 and 4 kg/m3 for windom frames and window sash Before treatment, wood material must be machined into window constructure and classified as window frames and window sash. The window frames made from impermeable species need to close-stack and cover with plastic film after treatment. Changes of wood size should be controled, if treating with water-borne preservatives.  
        关键词：Water-borne preservative;Oil-borne preservative;Double vacuum process;Full-cell pocess   
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        发布时间：2021-03-12
      • Picea jezoensis var. komarovii LüJianxiong Bao Fucheng
        Issue 1, Pages: 29-33(1992) DOI: 10.19455/j.mcgy.1992.01.010
        摘要：The possibility of pit deasPiration and its effect on the permeability of refractory Picea jezoensis var. komarovii air-dried heartwood was explored by pretreatment-resoaking in water. The axial gas permeability of wood samples was measured with rising-water volume-displacement method. The result showed that the average gas permeability of 5-year air-dried heartwood samples which were solvent exchange drying after resoaking period Of 11 weeks was increased by 110 percent over their controls of paired, comparative test, whereas the permeability difference of resoaking samples versus their controls was not significant at the 5% level by "t" test of paired comparative test. It suggests that aspirated pit of air-dried heartwood did not spring back to its normal position by resoaking in water so that the permeability was really improved.  
        关键词：Picea jezoensis var komarovii;permeability;Pit deaspiration;Solvent exchange drying;Resoaking   
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        发布时间：2021-03-12
      • Lu Ying
        Issue 1, Pages: 34-38(1992) DOI: 10.19455/j.mcgy.1992.01.011
        摘要：Wood is a kind of anisotropic material which has strong variability, Determining the number of test specimens suitably can reach the target of not only getting the requisite accuracy but also avoiding big waste. For revising the Chinese standard of "Methods of Testing Physical and Mechanical Properties of Wood", the difference sampling methods between ISO international standard and Chinese standard has been analysed and compared. A sampling methods that is suitable to china′s actural condition and close the ISO international standard has been found.  
          
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        发布时间：2021-03-12
      • An Peijun
        Issue 1, Pages: 39-41(1992) DOI: 10.19455/j.mcgy.1992.01.012
        摘要：Based on many years of experiments, this paper reports the production technologies of hardboard wet-overlay with microveneer and its application to the manufacture of the doubleintraneular panel-type furniture and also states its technologieal parameters and the application effects.  
        关键词：Microveneer;Hardboard;overlay;Panel-type furniture   
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        发布时间：2021-03-12
      • Issue 1, Pages: 42-44(1992) DOI: 10.19455/j.mcgy.1992.01.013
        摘要：<正> 单层热压机由于其具有加工成品厚度公差小、可减少砂光余量、热压周期短、生产率高等特点,在刨花板生产中得到广泛的使用,特别是日产300m~3以下的刨花板生产线。目前国外单层热压机主要为框架式结构,结构简单,易于加工制造,维  
          
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      • Issue 1, Pages: 45-46(1992)
        摘要：<正> 木材干燥是保证木材制品质量的关键,也是木材合理利用和节约木材的重要措施。我国在50～60年代设计、制造了一大批木材干燥窑,为窑干生产打下了较好的基础,70年代中期到现在的十几年中,除了窑干生产不断扩大外,还开始引用了微波  
          
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      • Issue 1, Pages: 46-48(1992) DOI: 10.19455/j.mcgy.1992.01.014
        摘要：<正> 随着现代工业的发展,生产和生活中有害化学物质对人体的危害普遍得到了政府、企业等各部门的关注,人造板板材甲醛释放量标准的规定就是其中一例。德国的E1级刨花板是指板材甲醛释放量用穿孔法测定低于10mg/100g,大室法测定低于0.1PPm。本文主要介绍德国低毒刨花板的生产和对产品性质的研究情况。  
          
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      • Issue 1, Pages: 49-50(1992) DOI: 10.19455/j.mcgy.1992.01.015
        摘要：<正> 1989年7—8月薄木装饰板因滞销造成库存积压,笔者对本地区销售市场的调研发现,白栎木装饰板因具有色白的特点而倍受用户欢迎,但它是进口材料,价格昂贵,一般1220×2440 x30mm规格的装饰板要58元/张左右,一般顾客难以承受,使销量受到限制。为此,笔者立即进行了水曲柳薄木  
          
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      • Issue 1, Pages: 50(1992) DOI: 10.19455/j.mcgy.1992.01.016
        摘要：<正> 中国林学会木工学会木材防腐学组于1991年12月10日—13日在广州召开了第三届全国木材防腐学术研讨会,出席代表39人,提出了防腐、防霉和阻燃剂的应用研究,处理技术,木材性质,试验标准和国内外综述等文章24篇。会议代表回顾和总结了近几年来木材防腐工业的现状和发展,认为尽管我国木材防  
          
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      • Issue 1, Pages: 51-54(1992)
        摘要：<正> 关于发展非木材人造板的建议1991年8月底在哈尔滨市举行的全国非木材人造板学术研讨会上,代表们回顾了近年来我国在发展非木材人造板方面所取得的成就与存在的问题。为使非木材人造板工业进一步健康发展,会议提出了以八下点建议: 一、制定非木材人造板的发展规划。非木材人造板应首先发展技术条件成熟、产品性能较好、原料的集中与贮存较为方便者,如竹材、甘蔗渣、亚  
          
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