標題: | Protection of epoxy resin against thermo-oxidation via co-curing epoxy/resole (I) |
作者: | Lin, MS Chiu, CC 應用化學系 Department of Applied Chemistry |
關鍵字: | thermo-oxidation;co-curing;degradation rate constants |
公開日期: | 2000 |
摘要: | Co-cured materials based on 100/0, 50/50 and 0/100 weight ratios of resole/epoxy were prepared by using NaOH and 4,4'-diaminodiphenylmethane (MDA) as curing agents. Samples were spin-coated on Al plates and were subjected to accelerated aging at 150 degrees C in air for 49 days. The functional group changes during thermal oxidation were monitored with FT-IR at various times. Difference spectra were obtained by using aromatic absorption at 1608 cm(-1) as internal standard. Kinetic study was performed, and a first order of degradation was demonstrated. Experimental results revealed that the degradation rate constants for pure epoxy, 50/50 of resole/epoxy and pure resole are 9.32x10(-3), 4.29x10(-3) and 2.03x10(-3) h(-1), respectively, indicating a significant protection of epoxy against thermal oxidation via co-curing resole/epoxy. (C) 2000 Elsevier Science Ltd. All rights reserved. |
URI: | http://hdl.handle.net/11536/30867 http://dx.doi.org/10.1016/S0141-3910(00)00058-6 |
ISSN: | 0141-3910 |
DOI: | 10.1016/S0141-3910(00)00058-6 |
期刊: | POLYMER DEGRADATION AND STABILITY |
Volume: | 69 |
Issue: | 2 |
起始頁: | 251 |
結束頁: | 253 |
顯示於類別: | 期刊論文 |