Water Resistance of Wood-Based Panels Made without Binders
DOI:
https://doi.org/10.37482/0536-1036-2020-3-151-158Keywords:
mechanical activation, water resistance, swelling, wood-based panels without binders, hydrodynamic treatment, autohesionAbstract
Water resistance of medium density panels made of hydrodynamically treated sawdust without binders was studied. It is customary to use panel swelling through-thickness after soaking in water for 24 hours and residual strength under static bending as criteria for water resistance. The effect of the following operation conditions of hot pressing on water resistance of panels was studied: temperature of press boards, specific pressing time and molding compound humidity. It is found that an increase in the temperature of press boards and specific pressing time results in a decrease in panel swelling through-thickness. The smallest value of this parameter was recorded at the press pulp humidity of 210 %. In comparison, the effect of boiling in water within 1 hour on the properties of the panels made of mechanically activated wood particles, as well as particle boards, high density fiberboards (HDF) and medium density fiberboards (MDF) of dry process was studied. It was found that the particle boards and medium density fiberboards were completely broken. High density fiberboards retained their shape, but the static bending strength was 89.7 % of the initial one. The panels made of mechanically activated wood particles had the static bending strength loss of 18.2 % of the initial one (before boiling – 22.4 MPa, after boiling – 17.4 MPa). The cyclic tests conducted according to the state standard GOST R 56309–2014 and by the “soaking–freezing–drying” method allowed us to find that the moisture deformations of the panels made of mechanically activated wood particles are reversible. As a result of 3 test cycles, a decrease in the static bending strength of the boards was 29.2 %. At the same time, their dimensions had no considerable changes. The value of residual swelling through-thickness was 0.62 %. The obtained results show that the preliminary hydrodynamic treatment of wood wastes (sawdust) allows making eco-friendly boards that have permanent water resistance. They can become widely used, especially under severe temperature and moisture conditions of operation.
For citation: Ermolin V.N., Bayandin M.A., Kazitsin S.N., Namyatov A.V., Ostryakova V.A. Water Resistance of Wood-Based Panels Made without Binders. Lesnoy Zhurnal [Russian Forestry Journal], 2020, no. 3, pp. 151–158. DOI: 10.37482/0536-1036-2020-3-151-158
Funding: The research was carried out with the financial support from the Russian Foundation for Basic Research, the Government of the Krasnoyarsk Krai and the Krasnoyarsk Regional Fund of support scientific and technical activities within the framework of the research project “The Study of the Structuring Processes of the Materials Made of Cavitation-Activated Wood”.
Downloads
References
Алашкевич Ю.Д. Основы теории гидродинамической обработки волокнистых материалов в размольных машинах: автореф. дис. ... д-ра техн. наук. Красноярск, 1986. 45 с. [Alashkevich Yu.D. Fundamentals of the Theory of Hydrodynamic Treatment of Fibrous Materials in Grinding Machines: Dr. Eng. Sci. Diss. Abs. Krasnoyarsk, 1986. 45 p.].
Баяндин М.А., Ермолин В.Н., Казицин С.Н., Елисеев С.Г. Влияние мелкодисперсных фракций на формирование свойств древесных плит без связующего // Хвойные бореальной зоны. 2015. Т. 33, № 3-4. С. 182–185. [Bayandin M.A., Ermolin V.N., Kazitsin S.N., Eliseyev S.G. The Influence of Fine Powder Fractions on the Properties Formation of the Wood-Based Panels without a Binder. Khvoynyye boreal’noy zony [Conifers of the boreal area], 2015, vol. 33, no. 3-4, pp. 182–185].
Леонович А.А. Физико-химические основы образования древесных плит. СПб.: Химиздат, 2003. 192 с. [Leonovich A.A. Physics and Chemistry of the Wood-Based Panels Formation. Saint Petersburg, Khimizdat Publ., 2003. 192 p.].
Смолин А.С., Бисальски М., Шабель С., Шабиев Р.О. Влияние размола и фракционирования на электроповерхностные свойства целлюлозных гидросуспензий // Химия растительного сырья. 2011. № 3. С. 183–192. [Smolin A.S., Bisal’ski M., Shabel’ C., Shabiev P.O. The Influence of Grinding and Fractionation on Electrosuperficial Properties of Cellulosic Hydrosuspensions. Khimija Rastitel’nogo Syr’ja [Chemistry of plant raw material], 2011, no. 3, pp. 183–192].
Чудинов Б.С. Вода в древесине. Новосибирск: Наука, 1984. 267 с. [Chudinov B.S. Water in Wood. Novosibirsk, Nauka Publ., 1984. 267 p.].
Эльберт A.A. Водостойкость древесностружечных плит. М.: Лесн. пром-сть, 1973. 96 с. [Elbert A.A. Water Resistance of Chipboards. Moscow, Lesnaya promyshlennost’ Publ., 1973. 96 p.]
Chapman K.M. Wood-Based Panels: Particleboard, Fibreboards and Oriented Strand Board. Primary Wood Processing. Dordrecht, Springer, 2006, pp. 427–475. DOI: 10.1007/1-4020-4393-7_12
Donaldson L.A., Lomax T.D. Adhesive/Fibre Interaction in Medium Density Fibreboard. Wood Science and Technology, 1989, vol. 23, iss. 4, pp. 371–380. DOI: 10.1007/BF00353254
Ermolin V.N., Bayandin M.A., Kazitsin S.N. Mechanical Activation of Wood for Adhesive-Free Board Production. IOP Conf. Series: Materials Science and Engineering, 2016, vol. 155, art. 012038. DOI: 10.1088/1757-899X/155/1/012038
Grigsby W.J., Thumm A. Resin and Wax Distribution and Mobility during Medium Density Fibreboard Manufacture. European Journal of Wood and Wood Products, 2012, vol. 70, pp. 337–348. DOI: 10.1007/s00107-011-0560-0
Hosseinpourpia R., Adamopoulos S., Mai C., Hemmilä V. Effect of Bio-Based Additives on Physico-Mechanical Properties of Medium Density Fibreboards. Proceedings of the 28th International Conference on Wood Science and Technology 2017: Implementation of Wood Science in Woodworking Sector, Zagreb, Croatia, 7–8 December, 2017. Zagreb, University of Zagreb, 2017, pp. 153–157.
Hosseinpourpia R., Adamopoulos S., Mai C., Taghiyari H.R. Properties of Medium-Density Fibreboards Bonded with Dextrin-Based Wood Adhesive. Wood Research, 2019, vol. 64(2), pp. 185–194.
Hubbe M.A., Pizzi A., Zhang H., Halis R. Critical Links Governing Performance of Self-Binding and Natural Binders for Hot-Pressed Reconstituted Lignocellulosic Board without Added Formaldehyde: A Review. BioResources, 2018, vol. 13, no. 1, pp. 2049–2115. DOI: 10.15376/biores.13.1.Hubbe
Li J., Yang X., Xiu H., Dong H., Song T., Ma F., Ji Y. Structure and Performance Control of Plant Fiber Based Foam Material by Fibrillation via Refining Treatment. Industrial Crops and Products, 2019, vol. 128, pp. 186–193. DOI: 10.1016/j.indcrop.2018.10.085
Li W., Van den Bulcke J., Dhaene J., Zhan X., Mei C., Acker J.V. Investigating the Interaction between Internal Structural Changes and Water Sorption of MDF and OSB Using X-Ray Computed Tomography. Wood Science and Technology, 2018, vol. 52, iss. 3, pp. 701–716. DOI: 10.1007/s00226-018-0992-3
Mahrdt E., van Herwijnen H.W.G., Kantner W., Moser J., Giesswein J., Mitter R., Müller U., Gindl-Altmutter W. Adhesive Distribution Related to Mechanical Performance of High Density Wood Fibre Board. International Journal of Adhesion and Adhesives, 2017, vol. 78, pp. 23–27. DOI: 10.1016/j.ijadhadh.2017.06.013
Rowland S.P. Water in Polymers. Washington, DC, American Chemical Society, 1980. 597 p. DOI: 10.1021/bk-1980-0127
Salvadó J., Velásquez J.A., Ferrando F. Binderless Fiberboard from Steam Exploded Miscanthus Sinensis: Optimization of Pressing and Pretreatment Conditions. Wood Science and Technology, 2003, vol. 37, pp. 279–286. DOI: 10.1007/s00226-003-0186-4
Suchsland O., Woodson G.E. Fiberboard – Manufacturing Practices in the United States. Agriculture Handbook No. 640. USA, USDA Forest Service, 1991. 263 p.
Tuntsev D.V., Prosvirnikov D.B., Kozlov R.R. Physical and Chemical Properties of Activated Lignocellulose and Its Areas of Application. Solid State Phenomena, 2018, vol. 284, pp. 779–784. DOI: 10.4028/www.scientific.net/SSP.284.779
