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Detail projektu
Období řešení: 01.01.2021 — 31.12.2023
Zdroje financování
Grantová agentura České republiky - Standardní projekty
- plně financující (2021-03-08 - nezadáno)
O projektu
Characterization of modified isocyanate-based adhesives for engineered wood products
Popis anglickyIn the field of adhesives intended for load-bearing wooden structures, it is currently a priority to use adhesives with the lowest possible impact on the environment, which at the same time do not contain formaldehyde. Existing natural-based adhesives do not show sufficient bonded joint durability, and most synthetic adhesives for boards or beams are formaldehyde-based. The essence of the proposed project is the effort to achieve qualitatively better parameters of isocyanate adhesives and their optimal modification via dispersed particles. The project will monitor the effect of the filler on the properties of the adhesive mixture and on the interphase interface of the bonded wood joint at the sub-microscopic level. Via suitable modification of adhesives, it is possible to achieve not only an improvement in its properties, but also the overall increase of the load-bearing capacity or stiffness of the bonded joint. Modification of isocyanate adhesives will be carried out with regard to the use of adhesives for wood structural panels and finger joints of wooden structural elements.
Klíčová slovaDřevo;dřevěné kompozitní materiály;dřevěné konstrukce;izokyanát;adheze;průnik lepidla
Klíčová slova anglickyWood, wood composites, timber structures, isocyanate, adhesion, resin penetration
Označení
GA21-20645S
Originální jazyk
čeština
Řešitelé
Vaněrek Jan, doc. Ing., Ph.D. - hlavní řešitelBěťák Adam, Ing. - spoluřešitelŠmak Milan, doc. Ing., Ph.D. - spoluřešitel
Útvary
Ústav technologie stavebních hmot a dílců- spolupříjemce (01.01.2021 - 31.12.2023)Fakulta stavební- příjemce (01.01.2021 - 31.12.2023)
Výsledky
LACIKOVÁ, P.; VANĚREK, J.; BĚŤÁK, A. Behaviour of wood joints glued by one component polyurethane adhesive modified by cotton flakes and basalt fibers. Transactions of the VŠB – Technical University of Ostrava, Civil Engineering Series, 2022, vol. 22, no. 2, p. 69-73. ISSN: 1804-4824.Detail
LACIKOVÁ, P.; VANĚREK, J.; BĚŤÁK, A.; BÖHM, M. Improving the Tensile Shear Strength of Lap Joints of Beech Wood by Adding Basalt Fibers to Polyurethane Adhesive. In Proceedings of the International Conference on Numerical Analysis and Applied Mathematics 2022. 2024. Melville (NY), Spojené státy: AIP Conference Proceedings, 2024. ISBN: 978-0-7354-4954-1.Detail
VANĚREK, J.; BÖHM, M.; BĚŤÁK, A.; KULICH, P.; MAŠEK, J. Penetration Process of Polyurethane Adhesive into the Wood Ultrastructure. In AIP Conference Proceedings 2611. vol. 1. Melville (NY), Spojené státy: AIP Publishing LLC, 2022. p. 040008-1 (040008-5 p.)ISBN: 978-0-7354-4247-4.Detail
BOHM, M.; MORAVČÍK, I.; LACIKOVÁ, P.; VANĚREK, J.; TESAŘOVÁ, H.; ČERNÝ, R. Tensile shear strength and microscopic characterization of structural polyurethane adhesive modified with basalt fibers. In International Conference of Numerical Analysis and Applied Mathematics. 3094. Melville (NY), USA: AIP Conference Proceedings, 2024. ISBN: 978-0-7354-4954-1.Detail
BĚŤÁK, A.; ZACH, J.; MISÁK, P.; VANĚREK, J. Comparison of Wood Moisture Meters Operating on Different Principles of Measurement. Buildings, 2023, vol. 13, no. 2, p. 1-14. ISSN: 2075-5309.Detail
VANĚREK, J.; BÁLKOVÁ, R.; ŠMAK, M.; BĚŤÁK, A.; VEJPUSTEK, Z. The effect of long and short term elevated temperatures on the behaviour of lap glued joints of load-bearing spruce elements. International Journal of Adhesion and Adhesives, 2024, vol. 129, no. February 2024, ISSN: 0143-7496.Detail
LACIKOVÁ, P.; BĚŤÁK, A. Characterization of sealants and adhesives behaviour as fulfillments of cracks in wood. In Juniorstav 2024: Proceedings 26th International Scientific Conference Of Civil Engineering. Brno: ECON Publishing, s.r.o., 2024. ISBN: 978-80-86433-83-7.Detail
BÖHM, M.; VANĚREK, J.; PROCHÁZKA, J.; JERMAN, M.; ČERNÝ, R. Determination of Tensile Shear Strength of Lap Joints of Planed and Sanded Beech Wood. In AIP Conference Proceedings 2611. vol. 1. Melville (NY), Spojené státy: AIP Publishing LLC, 2022. p. 040009-1 (040009-5 p.)ISBN: 978-0-7354-4247-4.Detail