最新刊期
      期 0 ， 2020
      • Chen Shiying Long Ling Zhang Yisheng
        Issue 5, Pages: 3-6(1999) DOI: 10.19455/j.mcgy.1999.05.001
        摘要：Bamboo Particleboard is a kind of polymer. It displays elastic deformation and permanent plastic performance, depending upon the time of loading and temperature under constant stress. The test results showed that the bamboo particleboard with phenol formaldehyde resin(PF) had better anti creep performance than bamboo particleboard with urea formaldehyde resin(UF) under relative humidity( RH )90%, the bamboo particleboard laminated by barmboo weaving with PF resin had the best anti creep performance, bamboo particleboard had better anti creep performance than wood particleboard. The creep performance among all particleboard was no obvious difference at the condition RH 35% and RH 65%  
        关键词：Bamboo particleboard;creep;Relative humidity( RH )   
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        发布时间：2021-03-12
      • Gu Jiyou Gao Zhenhua Tan Haiyan Ai Jun
        Issue 5, Pages: 7-10(1999) DOI: 10.19455/j.mcgy.1999.05.002
        摘要：The production technology for making particleboard with isocyanate resin(YQJ A)was studied. The effects of hot pressing temperature, hot pressing time, density, moisture content( MC ),adhesive consumption and wax consumption were discussed in details. The results showed that the hot pressing conditions and MC of particles in manufacturing particleboard were the most important factors influencing panel’s performances. A phenomenon of thickness swell( TS) parallelism was found and analyzed. The relation between irreversible thickness swell and 24 hr. thickness swell were obtained. 24 hr. thickness swell were improved by enhancing the irreversible thickness swell. The test result indicated that poplar particleboard by using YAJ A resin could meet the demands of Standard of DIN 68736 V100.  
        关键词：particleboard;Hot pressing;moisture content;Isocyanate resin;TS Parallelism   
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        发布时间：2021-03-12
      • Huang Luohua Qu Yanchun Cao Zhongrong
        Issue 5, Pages: 11-13(1999) DOI: 10.19455/j.mcgy.1999.05.003
        摘要：This paper studied the manufacturing process of medium density fiberboard(MDF) using loblolly pine, which focused on reducing resin consumption in manufacture of MDF. The results showed that MDF made with 8% resin content could meet the requirement of MDF standard of USA(ANSI A 208.2 1994) and Chinese National Standard of MDF(GB 11718 89) in the main physical and mechanical properties.  
        关键词：Loblolly Pine;MDF;Resin consumption   
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        发布时间：2021-03-12
      • Jin Juwan Feng Weizhong Hua Yukun
        Issue 5, Pages: 14-16(1999) DOI: 10.19455/j.mcgy.1999.05.004
        摘要：Colored oriented structural board (OSB) was made with dyed strands in outer layer and undyed ones in core layer by conventional OSB manufacturing technology. The product could be used in places where colored appearance is required. Effect of dyeing procedure on free radicals and gluability of the strands were investigated. Results revealed that both dyes and dyeing procedure had significant influence on the free radicals, but had no negative effects on properties of the colored OSB.  
        关键词：acid dye;Dyed strand;Free radicals;Colored OSB   
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        发布时间：2021-03-12
      • Fang Guizhen Li Shujun
        Issue 5, Pages: 17-19(1999) DOI: 10.19455/j.mcgy.1999.05.005
        摘要：The Populus ussuriensis wood was modified with phenol formaldehyde (PF) resin of low molecular weight. The modified wood was in good dimensional stability, bulged and strengthened largely at the same time. As far as the modified wood with 10% PF was concerned, its ASE (moisture)was 69%, ASE (water′)was 75%, its MEE was 52% and its maximum compression strength parallel to the grain was increased by 23%. The compression strength was increased by 78% compared with that in air dried condition. The treated wood was as strong as some strong hardwoods.  
        关键词：PF resin of low molecular weight;dimensional stability;Strength properties   
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        发布时间：2021-03-12
      • Ren Haiqing
        Issue 5, Pages: 20-23(1999) DOI: 10.19455/j.mcgy.1999.05.006
        摘要：The concepts of fracture mechanics applied to wood and the methods of measuring critical stress intensity factors are shown in this article. Also the study situation of wood fracture mechanics at home and abroad are given.  
        关键词：Fracture mechanics;wood;Stress intensity factor   
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        发布时间：2021-03-12
      • Ye Cuixian
        Issue 5, Pages: 24-25(1999) DOI: 10.19455/j.mcgy.1999.05.007
        摘要：Small diameter logs resources provide abundant raw materials for production of solid wood furniture and interior decoration. Provided the continuation of improvement of the design and manufacture of products according to the principle of reasonable, economic and comprehensive utilization, the prospect for development and application of wooden furniture and interior decoration material will be bright.  
        关键词：Small diameter log;Solid wood;Furniture and interior decoration;Development and application   
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        发布时间：2021-03-12
      • Lu Bin Zhou Meijian Wang Weixin Tang Zhaoqun
        Issue 5, Pages: 26-28(1999) DOI: 10.19455/j.mcgy.1999.05.008
        摘要：Based on the test data of more than one hundred laminated flooring overlaid with resin impregnated paper,this paper deals with the quality actuality and development of this kind of product,and provides the basis for making Chinese standard of laminated flooring.  
        关键词：Laminated flooring;quality;Resin impregnated paper   
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        发布时间：2021-03-12
      • Xu Guoxiong Li Jianxi
        Issue 5, Pages: 29-30(1999) DOI: 10.19455/j.mcgy.1999.05.009
        摘要：A new process of using wet precious species wood slice in veneered plywood production was introduced. In order to avoid overlap and gap, reduce mending time, the process was improved with prolonged cold press and assembly time and sanded on wet board. By using this new technique, the rate of qualified product was raised obviously and the time of mending was reduced.  
        关键词：Slice;Decorative veneered plywood;quality   
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        发布时间：2021-03-12
      • Yue\ Cuiyin
        Issue 5, Pages: 31-33(1999) DOI: 10.19455/j.mcgy.1999.05.010
        摘要：A new glass fibre reinforced magnesium cement board imitating F.mandshurica wood was developed. In the procedure of board making, wood crumbs or crop stalks were used as filling materials while magnesium oxide and other mineral materials were used as adhesives with mid alkaline glass fibre cloths as reinforcement materials. The board was shaped in a special mould. The physi mechanical properties and the appearance performance of the board were as similar as polywood made of F.mandshurica with good fireproof characteristics.  
        关键词：Imitating F.mandshurica;Glass fibre reinforced magnesium cement board;Mould   
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        发布时间：2021-03-12
      • Zhu Ruihua Xiong Jianjun Zhang Chengzhong
        Issue 5, Pages: 34-35(1999) DOI: 10.19455/j.mcgy.1999.05.011
        摘要：In this paper, a new type dryer and its heat supply system for particleboard production were introduced. The dryer was designed based on the wood drying principle, combined with the thermal oil heating technology, which is high efficiency in energy saving. Two heating sources with different temperatures respectively supplied heat to horizontal jet dryer. Thus the heat energy consumption was reduced obviously. On the other hand, owing to the airflow selecting effect, the deviation of final moisture content of particles was small. High quality flakes can be obtained. This kind of dryer can also be applied to MDF production.  
        关键词：particleboard;Jet dryer;Thermal oil;Heat supply system;MDF   
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        发布时间：2021-03-12
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