最新刊期
期 0 ， 2020
- 摘要：Humidifying treatment of medium density fiberboard (MDF) mat is for the purpose of shortening hot pressing cycle, reducing thickness of pre cured layer and raising quality of MDF. Results showed that the properties of MDF could be improved greatly by humidifying treatment of its mat, the thickness of pre cured layer was reduced about 30% and MOR, MOE, IB were increased about 30%, 25%, 10% respectively. Based on the results, some problems of MDF manu facture were put out and related suggestions were given.关键词：MDF;Mat;Humidifying treatment
- 4
- |
- 103
- |
- 9
发布时间：2021-03-12 - 摘要：Based on analysis of flame retardant experiment of Masson Pine( Pinus massoniana) plywood, the effect of the key factors (flame retardant consumption, veneer moisture content, adhesive consumption, pressing temperature etc.) on properties of the board were discussed. The results indicated that it is feasible to adopt flame retardant technique to the manufacture of flame retardant Masson Pine plywood. The bonding and flame retarding properties of board can meet the corresponding standard: the moisture content 6 %～14 %, bond strength ≥0.85 MPa, oxygen index 45 %～60 %, heat release rate HRR 3 ≤80 kW·min/m 2 at 2 minutes.关键词：Masson Pine;plywood;Flame retardant technique
- 4
- |
- 114
- |
- 36
发布时间：2021-03-12 - 摘要：Eucalyptus chips were used as raw materials for manufacture of fire proof and water resistant wood based composite board. Effects of chip treatment on properties of the board were examined. The results indicated that chip treatment influenced the physical and mechanical properties of the board greatly. Chips treatment suitable for manufacture of fire proof and water resistant wood based composite board could be adopted as follows: 1)chips were submerged in 0.2% NaOH for 48 hours under room temperature; 2)chips were submerged in 10%～15% sodium silicate for 48 hours under room temperature.关键词：Eucalyptus composite board;Chip treatment;Soluble substance
- 3
- |
- 94
- |
- 1
发布时间：2021-03-12 - 摘要：Desulpho gypsum originates from electric power plants that use flue gas desulfurizer. This paper analyzed the character of desulpho gypsum and discussed the feasibility and process of manufacturing desulpho gypsum particleboard. The results showed that desulpho gypsum could be used for producing gypsum particleboard (GPB) and the properties of GPB were better than that using nature gypsum. The performances of board with wood/ gypsum(W/G) 0.18 were better than that with W/G 0.22.关键词：Desulpho gypsum;Gypsum particleboard;Retarder;Wood/Gypsum(W/G) ratio
- 3
- |
- 98
- |
- 8
发布时间：2021-03-12 - 摘要：The surface layer of the lumber can be greatly plasticized in the high temperature drying. Th e internal cracking may be produced due to the restraint of regular shrinkage in the internal layer in the later drying period. The internal cracking is related to the tensile stress of the core layer. When the tensile stress of the core layer is bigger than the tensile strength perpendicular to grain of wood, the internal crack will appear. Therefore, when the high temperature drying technology is used to rapidly dry the soft broadleaf lumber such as the poplar( Populus deltoides Bartr.) wood, attention should be paid to the drying defect due to the drying stress reversal in the later drying period.关键词：wood;high temperature drying;Elasticity strain
- 3
- |
- 198
- |
- 12
发布时间：2021-03-12 - 摘要：Wood properties of trees ( Populus) selected from healthy and acid rain damaged forest were analyzed to evaluate the possible impacts on wood properties and utilization. Comparing with healthy trees, the contents of lignin and pentosan in diseased trees increased 3.72% and 1.43%, but the contents of cellulose in diseased trees decreased 3.45%. Extractive content showed significant difference between diseased trees and healthy trees. The basic density and air drying density and oven dry density of wood of diseased trees decreased 2.62% and 1.75% and 1.19%. Moisture content in diseased trees was lower than in healthy tree, the difference of moisture content in sapwood was larger and in heart wood was smaller. The tangential shrinkage of wood of diseased trees increased relative 10.77%, the radial shrinkage of wood of diseased trees decreased relative 16.88%. The variation of wood properties by acid rain influenced significantly wood processing and utilization .关键词：Acid rain;Populus;Wood properties;Utilization
- 3
- |
- 69
- |
- 12
发布时间：2021-03-12 - 摘要：The requirement on sound insulation of living environment is becoming higher along with the living standards improves.Japanese made much research on improving the sound insulation of dwelling house and got much progress in the last few years.This paper briefly introduces some Japanese research results on sound insulation of floor impact noise that is difficult to insulate.Though the national conditions between Japan and China are quite different,in Japan the dominant dwelling houses are wooden construction,but the results still have some reference worth to improving the sound insulation of concrete construction dwelling house.关键词：wood;Construction;Sound insulation
- 4
- |
- 266
- |
- 4
发布时间：2021-03-12 - 摘要：Dynamic connotation of automation in modern industry is analysed in this article, the feasibility of putting it into practice in furniture industry is explained and four basic ideas on carrying out automatization in furniture manufacturing are pointed out.关键词：Furniture manufacturing;automatization
- 3
- |
- 114
- |
- 6
发布时间：2021-03-12 - 摘要：In this article, the work safety and health situation in firms of Chinese wood industry has been studied . The various criterions of work safety and health for a working place are evaluated with a method of checklist. The study showed that there were significant differences on work safety and health condition among the 5 production branches studied. The primary criterion health danger is a main factor for this difference. The furniture branch showed a more critical situation than other branches studied.关键词：Work safety and health;Wood industry;Empirical evaluation
- 3
- |
- 44
- |
- 7
发布时间：2021-03-12 - 摘要：This paper gives a definition of collapse and analyses the collapse mechanism, wood cell collapsed basic condition and external conditions. Collapses properties and evaluating targets and the relationship of evaluating targets are discussed.关键词：wood drying;Drying defect;Collapse
- 3
- |
- 148
- |
- 26
发布时间：2021-03-12 - 摘要：In this paper, the principles of design, structure and contents of the database, as well as the functions and operations of a large software package of wood information database with 200 valuable tropical species from Latin America are introduced. Covering Latin name, family name, trade name, local name, wood feature of properties and anatomy and 600 pictures of anatomy. This system can offer many kinds of retrieval service and be used as an important tool in wood research, teaching, processing and trade.关键词：Database;Tropical wood;Visual basic
- 3
- |
- 110
- |
- 26
发布时间：2021-03-12 - 摘要：This paper discusses the situation and problems on wet process hardboard plants in Daxinganling region of Inner Mongolia.The authors suggested that these plants should be transformed by adopting appropriate technologies to improve product quality, reduce pollution to the environment and to explore markets for survival and future development.关键词：Wet process;Hardboard;Transformation
- 7
- |
- 20
- |
- 0
发布时间：2021-03-12
- Address：Box 29，Research Institute of Wood Industry, No. 1, Dongxiaofu, Haidian District, Beijing Postal code：100091
- Tel：010-62889419 Email：mckx@caf.ac.cn
- Technical support is provided by Beijing Founder electronics co., LTD 京ICP备09064830号-19
京公网安备11010802024621 - It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
- Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.
- Total Visits：16680
0