Abstract
Urea-formaldehyde (UF) resins are the most widely used polycondensation resins today in manufacturing particleboards. The performance of UF resins in their processing is greatly influenced by curing characteristics. The cure process has been monitored by TG-DTA technique on a Setaram labsysTM instrument in dynamic heating conditions at different heating rates. Commercial UF resins from different suppliers used in Estonian particleboard factories were selected for TG-DTA measurements. Experiments were carried out without and with catalysts. Ammonium chloride and ammonium sulphate were used. Curing characteristics were evaluated both for fresh and aged resins.
Similar content being viewed by others
References
S. Zeman and L. A. Tokárová, Thermochim. Acta, 202 (1992) 181.
S. Chow and P. R. Steiner, Holzforschung, 29 (1975) 4.
G. E. Myers and J. A. Koutsky, Holzforschung, 44 (1990) 117.
M. Szesztay, Z. László-Hedvig, E. Kovacsovics and F. Tüdős, Holz Roh Werkst., 51 (1993) 297.
A. Pizzi and L. A. Panamgama, J. Appl. Polym. Sci., 58 (1995) 109.
R. O. Ebewele, J. Appl. Polym. Sci., 58 (1995) 1689.
K. Umemura, S. Kawai, R. Ueno, Y. Mizuno and H. Sasaki, Mokuzai Gakkaishi, 42 (1996) 489.
K. Umemura, S. Kawai, H. Sasaki, R. Hamada and Y. Mizuno, J. Adhesion, 59 (1996) 87.
A. Pizzi, J. Appl. Polym. Sci., 63 (1997) 603.
M. Dunky, Intern. J. Adhes. & Adhes., 18 (1995) 95.
S.-I. Tohmura, C.-Y. Hse and M. Higuchi, Int. Contrib. Wood Adhes. Res., Meeting Date 1998, (1999) 93.
P. Christjanson, K. Siimer, T. Pehk and I. Lasn, Holz Roh Werkst., accepted.
K. Siimer, T. Pehk and P. Christjanson, Macromol. Symp., 148 (1999) 149.
M. G. Kim, H. Wan, B. Y. No and W. L. Nieh, J. Appl. Polym. Sci., 82 (2001) 1155.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Siimer, K., Kaljuvee, T. & Christjanson, P. Thermal behaviour of urea-formaldehyde resins during curing. Journal of Thermal Analysis and Calorimetry 72, 607–617 (2003). https://doi.org/10.1023/A:1024590019244
Issue Date:
DOI: https://doi.org/10.1023/A:1024590019244