Hardening and Stabilization of Volumetric Properties in Aspen and Poplar Wood with Cardanol. P. 155–161

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UDС

674.812

DOI:

10.37482/0536-1036-2023-3-155-161

Abstract

Aspen and poplar are the least required types of wood in the Russian Federation, whose stock is continually expanding. Such wood can be used as a substitute for valuable hardwood, but in this case the strength must be almost doubled while achieving stability in shape and size. Treatment with acetic anhydride, polyvinyl alcohol, polyethylene glycol, or hydrothermal care are the most common methods for maintaining the volumetric stability of the wood. Treatment with phenol- and urea-formaldehyde monomers, oligomers, and resins is typically done for strength improvement. The stabilization of the dimensional parameters is especially critical for pressed wood, which has 8 times greater swelling in water than raw wood. Cardanol was chosen as a modifier. It can be derived from cashew nutshell liquid or synthesized. The established technique for impregnating wood with cardanol includes 2–3 % acetic acid, followed by heat treatment at 140–150 °С for 6–8 hours. During this process, cardanol polymerizes with components of the lignocarbohydrate complex of the wood, which does not only improve its characteristics but also provides form and size stability in an environment with changeable humidity. A Mettler Toledo DSC 823e/700 differential scanning calorimeter was used to examine the kinetics. Heat fluxes were measured in 30 µl sealed steel crucibles that could sustain steam pressure up to 15 MPa. At a heating rate of 10 °C/min, the heat flow curve showed an exothermic peak with a maximum temperature of 150.7 °C. Aspen wood with 15 % cardanol content has a compressive strength along the fibers of 69 MPa, a volume swelling limit of 2.6 %, and a moisture absorption limit of 18 %. The ultimate water absorption and ultimate volumetric swelling of wood impregnated with cardanol are comparable to the relevant indications of the modified wood brands Accoja, Belmadur, and Thermowood.

Authors

Vladimir A. Shamaev^1*, Doctor of Engineering, Prof.; ResearcherID: Y-9044-2018, ORCID: https://orcid.org/0000-0002-1762-7956
Oleg F. Shishlov², Doctor of Engineering, Prof., Director for Science Development; ResearcherID: Y-4197-2019, ORCID: https://orcid.org/0000-0002-4656-5969

Affiliation

¹Voronezh State University of Forestry and Technologies named after G.F. Morozov, ul. Timiryazeva, 8, Voronezh, 394036, Russian Federation; drevstal@mail.ru*
²PJSC “Uralchimplast”, Severnoe sh., 21, Nizhny Tagil, Sverdlovsk region, 622051, Russian Federation; o.shishlov@ucp.ru

Keywords

wood, wood strength, aspen, balsam poplar, hardening impregnation, cardanol, cardanol impregnation, water absorption, moisture absorption, compressive strength

For citation

Shamaev V.A., Shishlov O.F. Hardening and Stabilization of Volumetric Properties in Aspen and Poplar Wood with Cardanol. Lesnoy Zhurnal = Russian Forestry Journal, 2023, no. 3, pp. 155–161. (In Russ.). https://doi.org/10.37482/0536-1036-2023-3-155-161

References

1. Tkachenko V.I., Kancelyarist D.V., Shamaev O.A., Shamaev V.A., Suranov V.F., Oblonskij E.V., Kancelyarist V.V. Modified Wood Manufacture Method. Patent RF, no. RU 2131351, 1999. (In Russ.).

2. Shamaev V.A. Receiving Modified Wood Chemi-Mechanical Process and Investigation of Its Properties. Lesotexnicheskij zhurnal = Forestry Engineering Journal, 2015, vol. 5, no. 4(20), pp. 177–187. (In Russ.). https://doi.org/10.12737/17421

3. Shamaev V.A., Zlatoustovskaya V.V., Kopytin A.S. Stabilization of Forms and Dimensions of Pressed Wood by Chemical Methods. Lesnoy Zhurnal = Russian Forestry Journal, 2010, no. 2, pp. 115–121. (In Russ.). http://lesnoizhurnal.ru/upload/iblock/c0a/c0a8edd78e32d56f8e33156dcb78c9d7.pdf

4. ACCOYA. Official website. Available at: https://www.accoya.com/why-accoya/benefits/ (accessed 12.07.22).

5. Deka M., Saikia C.N. Chemical Modification of Wood with Thermosetting Resin: Effect on Dimensional Stability and Strength Property. Bioresource Technology, 2000, vol. 73, no. 2, pp. 179–181. https://doi.org/10.1016/S0960-8524(99)00167-4

6. Gry A., Westin M. Durability of Modified Wood – Laboratory vs Field Performance. Proceedings of the Fourth European Conference on Wood Modification. Sweden, SP Technical Research Institute Publ., 2009, pp. 515–522.

7. Igaz R., Macek Š., Zemiar J. The Influence of Unidirectional Cyclic Bend Loading on Initial Relaxation Speed of Beech Lamellas. Acta Facultatis Xylologiae Zvolen, 2014, vol. 56, pp. 27–35.

8. KEBONY. Official website. Available at: https://us.kebony.com/ (accessed 12.07.22).

9. Kúdela J., Rešetka M. Influence of Pressing Parameters on Dimensional Stability and Density of Compressed Beech Wood. European Journal of Wood and Wood Products, 2018, vol. 76, no. 4, pp. 1241–1252. https://doi.org/10.1007/s00107-018-1298-8

10. Lekounougou S., Kocaefe D., Oumarou N., Kocaefe Y., Poncsak S. Effect of Thermal Modification on Mechanical Properties of Canadian White Birch (Betula papyrifera). International Wood Products Journal, 2011, vol. 2, no. 2, pp. 101–107. https://doi.org/10.1179/2042645311Y.0000000016

11. Papadopoulos A., Mantanis G. Vapour Sorption Studies of Belmadur Wood. Advances in Forestry Letter (AFL), 2012, vol. 1, iss. 1, pp. 1–6.

12. Polilov A.N., Dornyak O.R., Shamaev V.A., Rumachik M.M. Justification of the Production Process of Pressed Wood and Study of Its Properties. Mechanics of Composite Materials, 2018, vol. 54, no. 2, pp. 221–230. https://doi.org/10.1007/s11029-018-9733-9

13. Risfaheri R., Tun T., Nur M., Saillah I. Isolation of Cardanol from Cashew Nutshell Liquid Using the Vacuum Distillation Method. Indonesian Journal of Agriculture, 2009, no. 2, pp. 11–20.

14. Sandberg D., Haller P., Navi P. Thermo-Hydro and Thermo-Hydro-Mechanical Wood Processing: An Opportunity for Future Environmentally Friendly Wood Products. Wood Material Science and Engineering, 2013, vol. 8, no. 1, pp. 64–88. https://doi.org/10.1080/17480272.2012.751935

15. Shamaev V.A., Medvedev I.N., Parinov D.A. Study of Modified Wood as a Bearing Material for Machine-Building. Proceedings of the International Conference “Aviamechanical Engineering and Transport”, AVENT, 2018. Atlantis Press Publ., 2018, pp. 478–482. https://doi.org/10.2991/avent-18.2018.92

16. Shamaev V.A., Medvedev I.N., Parinov D.A. Changing Wood Texture with Combination of Selective Treatment and Pressing. IOP Conference Series: Earth and Environmental Science, IOP Publ., 2021, vol. 875, no. 1, pp. 1–7. https://doi.org/10.1088/1755-1315/875/1/012057

17. Shamaev V.A., Medvedev I.N., Parinov D.A., Shakirova O.I., Anisimov M.V. Investigation of Modified Wood as a Material Power Transmission Pole Produced by SelfPressing Method. Acta Facultatis Xylologiae Zvolen, 2018, vol. 60, no. 2, pp. 25–32. https://doi.org/10.17423/afx.2018.60.2.02

18. Tyman J.H., Kiong L.S. Long Chain Phenols: Part XI. Composition of Natural Cashew Nutshell Liquid (Anacardium occidentale) from Various Sources. Lipids, 1978, vol. 13, no. 8, pp. 525–532. https://doi.org/10.1007/BF02533591

19. Zhenhua G., Dong L. Chemical Modification of Poplar Wood with Foaming Polyurethane Resins. Journal of Applied Polymer Science, 2007, vol. 104, no. 5, pp. 2980–2985. https://doi.org/10.1002/app.25963