Browse > Article
http://dx.doi.org/10.5012/jkcs.2003.47.3.250

Effect of Cationic Initiator Content on Electron-beam Curing of Difunctional Epoxy Resin  

Soo-Jin Park (Advanced Materials Division, Korea Research Institute of Chemical Technology)
Gun-Young Heo (Advanced Materials Division, Korea Research Institute of Chemical Technology)
Jae-Rock Lee (Advanced Materials Division, Korea Research Institute of Chemical Technology)
Dong Hack Suh (Department of Chemical Engineering, Hanyang University)
Publication Information
Journal of the Korean Chemical Society / v.47, no.3, 2003 , pp. 250-256 More about this Journal
Abstract
In this work, the effect of cationic initiator content on the electron-beam (EB) curing process of diglycidylether of bisphenol-A (DGEBA) resin was studied using near-infrared spectroscopy (NIRS), thermogravimetric analysis (TGA), and critical stress intensity factor $(K_{IC})$. Benzylquinoxalinium hexafluoroantimonate (BQH) were used as an initiator and its content was varied from 0.5 to 3 phr. NIRS measurements showed that the hydroxyl group of EB-cured epoxy resin was increased with increasing the BQH content. Thermal stability and $K_{IC}$ value of EB-cured epoxy resin were increased with increasing the BQH content but were decreased above 2 phr content. These results could be attributed to the decrease of the conversion and degree of crosslinking. In another word, the conversion and degree of crosslinking were restricted by the incomplete network structure from high reactivity at the BQH content above 2 phr, resulting in decreasings of thermal stability and $K_{IC}$.
Keywords
Electron-Beam; Epoxy; Cationic Initiator; Thermal Stability; $K_{IC}$;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Glauser, T.; Johansson, M.; Hult, A. Macromol. Mater.Eng., 2000, 274, 20.   DOI
2 Park, S. J.; Kim, T. J.; Lee, J. R. J. Polym. Sci. Polym.Phys., 2000, 38, 2114.   DOI   ScienceOn
3 Park, S. J.; Seo, M. K.; Lee, J. R.; Lee, D. R. J. Polym.Sci. Polym. Chem., 2001, 39, 187.   DOI   ScienceOn
4 Toneri, T.; Sanda, F.; T. Endo, Macromolecules, 2001,34, 1518.   DOI   ScienceOn
5 Sundell, P. E. Cationic Pol Vinyl Ethers using Iodoniumand Sulfonium Salts, Ph. D. Thesis, Royal Institute ofTechnology, Stockholm 1990.
6 Finzel, M. C.; Delong, J.; Hawley, M. C. J. Polym. Sci.Polym. Chem., 1995, 33, 673.   DOI   ScienceOn
7 Xu, L.; Schlup, J. R. J Appl. Polym. Sci., 1998, 67, 895.   DOI   ScienceOn
8 Li, F. M..; Bao, J. W..; Chen, X. B.; Bao, H. Y.; Wang,H. L. Radiat. Phys. Chem., 2002, 63, 557.   DOI   ScienceOn
9 Glauser, T.; Johansson, M.; Hult, A. Macromol. Mater.Eng., 2000, 274, 25.   DOI
10 Zheng, S.; Wang, J.; Guo, Q.; Wei, J.; Li, J. Polymer,1996, 37, 4667.   DOI   ScienceOn
11 Kwak, G. H.; Park, S. J.; Lee, J. R. J. Polym. Appl.Polym. Sci., 2000, 78, 290.   DOI   ScienceOn
12 Park, S. J.; Kim, H. C. J. Polym. Sci. Polym. Phys.,2001, 39, 121.   DOI   ScienceOn
13 Rabeik, J. F. Mechanisms of Photophysical Processesand Photochemical Reactions in Polymers, John Wiley& Sons, New York, 1987.
14 Wei, H.; Lu, Y.; Shi, W.; Yuan, H.; Chen, Y. J. Appl.Polym. Sci., 2001, 80, 51.   DOI   ScienceOn
15 Lopata, V. J.; Saunders, C. B.; Singh, A.; Janke, C. J.;Wrenn, G. E.; Havens, S. J. Radiat. Phys. Chem., 1999,56, 405.   DOI   ScienceOn
16 Mehnert, R.; Pincus, A.; Janorsky, I.; Stowe, R.; Berejka,A. UV & EB curing Technology & Equipment, 2nd Ed.; Johm Willey & Son, London, 1998.
17 Peterson, R. E. Stress Concentration Factors, WilleyInterscience, New York (1974).
18 Takahashi, E.; Sanda, F.; Endo, T. J. Polym. Sci. Polym. Chem., 2002, 40, 1037.   DOI   ScienceOn
19 Crivello, J. V. J. Polym. Sci., Polym. Chem., 1999, 37,4241.   DOI   ScienceOn
20 Yagci, Y. Reetz, I. Prog. Polym. Sci., 1998, 23, 1485.   DOI   ScienceOn
21 Crivello, J. V.; Walton, T. C.; Malik, R. Chem. Mater.,1997, 9, 1273.   DOI   ScienceOn
22 Park, S. J.; Kim, H. C.; Lee, H. Y.; Suh, D. H. Macromolecules,2001, 34, 7573.   DOI   ScienceOn