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Introduction Medium Density Fibreboard

 



Medium Density Fibreboard (MDF) is a wood based composite material that draws on the usage of wood fibres, rather than particles or veneers to produce board or sheet products. It is typically made as a board type product, though it's use in mouldings and increasing use as a structural product will see beam type products proliferate. It is replacing the use of particleboard in uses such as furniture manufacture, cabinet making, joinery, craft work and flooring. Its advantages include high strengths (MOR of 80 MPa and MOE of 3000 MPa), ease of machining, good weathering properties, and the ability to be made from a wide variety of fibrous products (An Environmental plus).

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Medium Density Fibreboard gets it's name from it's historical place in the production of fibreboards. Manufactured using a dry blowline process to a density of 750 kg/cum, this was originally heavier than existing low density boards such as caneite, and lighter than high density boards such as masonite. Nowadays the same MDF manufacturing proccess is used to produce light boards of 600 kg/cum, and tough high density moisture resistant boards (such as HD3) with densities of 1200 kg/cum.


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References

 

ASTM, 1992
ASTM (1992). Annual Book of ASTM Standards. American Society for Testing and Materials. Volume 4.09 Wood.
Boehme, 1992
Boehme, C. (1992). Significance of the density profile for MDF. Holz als Roh und Werkstoff., 50:18-24.
Dube, 1995
Dube, H; Kehr, E. M. (1995). Use of waste paper in MDF manufacture - influence of the proportion of waste paper. Holz-als-Roh-und-Werkstoff., 53:1,20.
Ernst, 1967
Ernst, K. (1967). Moglichkeiten zur verminderung der quelllung bei spanplatten. Holztechnologie, 8:41-47.
Evans, 1994
Evans, P. (1994). Course Notes for FSTY 4151. ANU.
Flinn and Trojan, 1990
Flinn and Trojan (1990). Engineering Materials and their Application. Houghton Mifflin Company, second edition.
Greubel, 1987
Greubel, D ; Drewes, H. M. (1987). Determination of sorption isotherms in wood-based materials at various temperatures using a new measurement method. Holz-als-Roh-und-Werkstoff., 7:289-295.
Hashim et al., 1994
Hashim, Murphy, Dickinson, and Dinwoodie (1994). The mechanical properties of boards treated with vapor boron. Forest-Products-Journal., 44:73-79.
Hsu et al., 1989
Hsu, W. E., Schwald, W., and Shields, J. A. (1989). Chemical and physical changes required for producing dimensional stable wood-based composites. Wood Science Technology., 23:281-289.
Liiri, 1960
Liiri, O. (1960). Investigations into the effects of moisture and wax on the properties of wood particleboard. State Institute for Technical Research. Helsinki, Finland.
McNatt, 1974
McNatt, J. (1974). Effects of equilibrium moisture content changes on hardboard properties. Forest Prod. J., 24(2):29-35.
Minato, 1993
Minato, K. (1993). Moisture adsorption characteristics of medium-density fiberboard and its raw wood fiber treated with formaldehyde. Mokuzai Gakkaishi = Journal of the Japan Wood Research Society., 39:1162-1168.
Minato and Seto, 1995
Minato, K. and Seto, Y. M. (1995). Formaldehyde treatment of medium-density fiberboard in the low temperature range I. Reaction kinetic aspects. Mokuzai Gakkaishi = Journal of the Japan Wood Research Society., 41:318-323.
Minato et al., 1993
Minato, K ; Yusuf, S. M., Imamura, Y., and Takahashi, M. (1993). Hygroscopic vibrational and biodeterioration characteristics of medium-density fiberboard treated with formaldehyde. Mokuzai Gakkaishi = Journal of the Japan Wood Research Society., 39:190-197.
Myers, 1983
Myers, G. C. (1983). Relationship of fiber preparation and characteristics to performance of medium-density hardboards. Forest-Products-Journal., 10:43-51.
Okamoto et al., 1994
Okamoto, H., Sano, S., Kawai, S., Okamoto, T., and Sasaki, H. (1994). Production of dimensionally stable medium density fiberboard by use of high-pressure steam pressing. Mokuzai Gakkaishi = Journal of the Japan Wood Research Society., 40:380-389.
Orman, 1965
Orman, R. (1965). The response of New Zealand Timbers to fluctuations in atmospheric moisture conditions. Forest Research Institute of NZ, 8.
Park, 1993
Park, J; Seo, S. (1993). Performances improvement of medium density fiberboard by combining with various nonwood materials. Research Reports of the Forestry Research Institute Seoul., 47:35-48.
Pascua-Srianna, 1994
Pascua-Srianna, F. (1994). The Structual role of extractives... PhD thesis, A.N.U. pp143-8.
Pizzi, 1994
Pizzi, A. (1994). Advanced Wood Adhesives Technology. Marcel Dekker, Inc.
Rijsdijk, 1994
Rijsdijk, J F; Laming, P. B. (1994). Physical and Related Properties of 145 Timbers. Kluwer Academic Publishers.
Seborg et al., 1953
Seborg, R. M., Tarkow, H., and Stamm, A. J. (1953). Effect of Heat Upon the dimensional stabilization of wood. Journal of F.P.R.S, 9:59-67.
Spalt, 1977
Spalt, H. (1977). Chemical changes in wood associated with fibreboard manufacture. Wood Technology, 43:193-219.
Stamm, 1964
Stamm, A. J. (1964). Wood and Cellulose Science. The Roland Press Company.
Suematsu, 1980
Suematsu, A ; Hirai, N. (1980). Properties of hot pressed wood. Mokuzai Gakkaishi = Journal of the Japan Wood Research Society., 26:581-586.
Suzuki, 1988
Suzuki, S; Saito, F. (1988). Fatigue properties of particleboards I. Effects of aging treatment on tensile properties parallel to the surface. Mokuzai Gakkaishi = Journal of the Japan Wood Research Society., 34:590-596.
Suzuki et al., 1987
Suzuki, S., Piao, C. X., and Saito, F. M. (1987). Study on the evaluation of internal bond properties of MDF. Bulletin of the Faculty of Agriculture, Shizuoka University., 37:55-66.
Tiemann, 1906
Tiemann, H. (1906). Effect of moisture upon the strength and stiffness of wood. USDA for Serv Bull.
Voevodin, 1986
Voevodin, V. M. M. (1986). Use of fibreboards for exterior wall cladding. Derevoobrabatyvayushchaya-Promyshlennost, 2:8-10.
Walker, 1993
Walker, J. C. F. (1993). Primary Wood Proccessing Principles and Practice. Chapman and Hall.
Wang, 1991
Wang, T. Y. (1991). A preliminary study on the MDF made from bamboos. Wood Industry Beijing., 5:1, 6-10.
Watkinson, 1990
Watkinson, PJ; van Gosliga, N. (1990). Effect of humidity on physical and mechanical properties of New Zealand wood composites. Forest-Products-Journal., 40:7-8 15-20.
Xu and Suchsland, 1991
Xu, H. and Suchsland, O. M. (1991). The expansion potential: a new evaluator of the expansion behavior of wood composites. Forest-Products-Journal. Michigan State University, 41:39-42.


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Last Update: 5 May 1999
This web site on Medium Density Fibreboard was written by Mr Don Mc Callum, a Bachelor of Engineering (Honours) student at the Australian National University. It was completed as the major assignment for the Forest Products Technology unit at the Department of Forestry,ANU. Don has moved on to a career in the Australian metals industry, but if you would like to contact him about his research, try donaldmccallum@yahoo.com. For comment and feedback on this site, contact Peter.Beutel@anu.edu.au
URL http://online.anu.edu.au/Forestry/wood/mdf/intro.html