IMPROVED PRODUCTION EFFICIENCY IN MEDIUM-DENSITY FIBERBOARD (MDF)

UDC 674.817-41

  • Kozhemyako Aleksandr Aleksandrovich − external doctorate student, Deputy General Director for producing. JSC “Vitebskdrev” (7, Stakhanovsky lane, 210008, Vitebsk, Republic of Belarus). E-mail: kozhemyako.a@wood.by/span

  • Dubodelova Ekaterina Vladimirovna − PhD (Engineering), Assistant Professor, the Department of Woodworking Technology. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: katedubodelova@tut.by

  • Gonchar Aleksandr Nikolayevich − Deputy Chief. JLLC “SynergyCom” (5, Urozhaynaya str., 247484, Prigorodnaya village, Rechitsky distr, Gomel region, Republic of Belarus). E-mail: agonchar@synergyhorizon.com

  • Shpak Sergey Ivanovich − PhD (Engineering), Assistant Professor, the Department of Chemical Processing of Wood. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: spak_s@belstu.by

DOI: https://doi.org/10.52065/2520-2669-2022-259-2-32-40

Key words: fiberboard, lignin bio-hardener, urea-formaldehyde resin, formaldehyde emission, environmental safety, productivity.

For citation: Kazhamiaka А. А., Dubodelova E. V., Gonchar А. N., Shpak S. I. Improving production efficiency in medium-density fiberboard (MDF). Proceedings of BSTU, issue 2, Chemical Engineering, Biotechnologies, Geoecology, 2022, no. 2 (259), pp. 32–40. (In Russian). DOI: https://doi.org/10.52065/2520-2669-2022-259-2-32-40.

Abstract

A novel binder composition based on urea-formaldehyde resins and lignin derived bio-hardener, branded as S-Drill™ BND and produced by JLLC “SynergyCom”, has been developed, which allows increasing the physical and mechanical performance of MDF with an increase in line productivity by 4% and increase in the level of environmental safety of production by reducing the maximum single concentration of formaldehyde in the air of the working area to the level of 0.5 mg/m3 . The effectiveness of the use of lignin bio-hardener, which is a product of hydrolysis lignin valorization, is due to its unique chemical structure and physicochemical properties. This is confirmed by the results of quantitative studies of the chemical composition of S-Drill™ BND to determine methoxyl, carboxyl, as well as hydroxyl groups, including phenolic and aliphatic, capable of intensifying the formation of a branched and crossed-linked structures during cure of urea formaldehyde resin, as indicated by a decrease in free formaldehyde content in MDF panels to 6.29 mg/100 g of absolute dry board, as well as capable of forming primary chemical bonds with wood fiber components, as indicated by an increase in the physical and mechanical properties of MDF, characterizing the adhesive ability of the novel adhesive composition. The results of the research have passed a comprehensive industrial approbation in the conditions of the MDF production workshop of JSC “Vitebskdrev” with confirmation of compliance of the manufactured products with the level of EN 622-1:2003 and EN 622-5:2009.

Download

References

  1. Leonovich A. A. Fiziko-khimicheskiye osnovy obrazovaniya drevesnykh plit [Physico-chemical basis for the formation of wood boards]. Saint Petersburg, Khimizdat Publ., 2003. 193 р. (In Russian).
  2. Li J., Zhang Y., Balart Gimeno R. A. Morphology and Crystallinity of Urea-Formaldehyde Resin Adhesives with Different Molar Ratios. Polymers, 2021, vol. 13. DOI: 10.3390/polym13050673.
  3. Kondrat’yev V. P., Kondrashchenko V. I., Shreder V. Y. Sinteticheskiye smoly v derevoobrabotke [Synthetic resins in woodworking]. Saint Petersburg, Izdatelstwo Polytechnicheskogo Universiteta Publ., 2013. 412 р. (In Russian).
  4. Chubinskiy A. N., Rusakov D. S., Varankina G. S., Rusakova L. N. Investigation of the properties of modified urea-formaldehyde adhesives for the manufacture of plywood. Lesnoy vestnik [Forest Bulletin], 2018, vol. 22, no. 5, рр. 103‒112. DOI: 10.18698/2542-1468-2018-5-103-112 (In Russian).
  5. Leonovich A. A., Voytova T. N. Improving the environmental safety of particle boards. Lesnoy zhurnal [Forest journal], 2014, no. 6, рр. 120‒128 (In Russian).
  6. Azarov V. I., Kononov G. N., Verevkin A. N., Drozdova V. S. Effect of modifiers on the technological parameters of modified urea-formaldehyde oligomers. Lesnoy vestnik [Forest Bulletin], 2009, no. 2, рр. 129‒133 (In Russian).
  7. V’yunkov S. N. The effect of urea on the curing of urea-formaldehyde resins. Izvestiya Sankt-Peterburgskoy lesotekhnicheskoy akademii [News of the St. Petersburg Forestry Academy], 2019, issue 226, pp. 155‒161. DOI: 10.21266/ 2079-4304.2019.226.155-161 (In Russian).
  8. Perminova D. A., Mal’kov V. S., Knyazev A. S., Dakhnavi E. M. Development of technology for modification of urea-formaldehyde resins. Vestnik Kazanskogo tekhnologicheskogo universiteta [Bulletin of Kazan Technological University], 2015, vol. 18, no. 1, pp. 159‒162 (In Russian).
  9. Timofeyev I. V., Ivanov D. V., Leonovich A. A., Krutov S. M. Usage of modified lignin to reduce the toxicity of wood boards. Izvestiya Sankt-Peterburgskoy lesotekhnicheskoy akademii [News of the St. Petersburg Forestry Academy], 2018, issue 222, pp. 240‒253. DOI: 10.21266/2079-4304.2018.222.240-253 (In Russian).
  10. Oblivin A. N., Semochkin A. Y., Semochkin Y. A., Lopatnikov M. V. Modification of ureaformaldehyde oligomers with carbon nanotubes. Lesnoy vestnik [Forest Bulletin], 2012, no. 7, рр. 121‒124 (In Russian).
  11. Sviridov A. V., Akayev O. P., Zvereva Y. V. Modification of urea-formaldehyde resin with activated silica gel. Vestnik KGU imеni N. A. Nekrasova [Bulletin of the Kostroma State University named after N. A. Nekrasov], 2011, no. 1, рр. 27‒29 (In Russian).
  12. Ugryumov S. A. Efficiency Evaluation of urea-formaldehyde resins modified with oleic acid in wood panel industry. Vestnik Povolzhskogo gosudarstvennogo tekhnologicheskogo universiteta [Bulletin of the Volga State Technological University], series Forest. Ecology. Nature management, 2017, no. 3 (35), pp. 49‒57. DOI: 10.15350/2306-2827.2017.3.49 (In Russian).
  13. Pikulev V. S., Sarkisov Y. S., Gorlenko N. P., Klopotov I. A., Rаkhmanova I. A. Adhesive compound for production of wood chipboard composite materials. Vestnik Tomskogo gosudarstvennogo arkhitekturno-stroitel’nogo universiteta [Bulletin of the Tomsk State University of Architecture and Civil Engineering], 2018, vol. 20, no. 4, pp. 145‒154. DOI: 10.31675/1607-1859-2018-20-4-145-154 (In Russian).
  14. Tarasov S. M., Azarov V. I., Kononov G. N., Ivanova A. M. Cationic starches are promising modifiers of aminoaldehyde oligomers. Lesnoy vestnik [Forest Bulletin], 2010, no. 5, рр. 152‒156 (In Russian).
  15. Glazkov S. S., Snycheva Y. V., Murzin V. S. Stabilization of urea-formaldehyde resins with alcohols. Lesnoy zhurnal [Forest journal], 2005, no. 6, рр. 100‒105 (In Russian).
  16. Tarasov S. M., Azarov V. I., Ivanova A. M. Modification of aminoaldehyde oligomers with watersoluble salts of silicic acid. Lesnoy vestnik [Forest Bulletin], 2012, no. 3, рр. 132‒137 (In Russian).
  17. Leonovich A. A. Novyye drevesnoplitnyye materialy [New wood-based materials]. Saint Petersburg, Khimizdat Publ., 2008. 160 р. (In Russian).
  18. Belini U. L., Fiorelli J., Savastano Jr. H., Tomazello Filho M. Density Profile as a Tool in Assessing Quality of New Composite. Materials Research. 2014, vol. 17 (1), pр. 138‒145. DOI: http://dx.doi.org/10.1590/S1516-14392013005000186.
  19. Thoemen H., Ruf C. Measuring and simulating the effects of the pressing schedule on the density profile development in wood-based composites. Wood and Fiber Science. 2008, vol. 40 (3), pp. 325‒338.
11.05.2022