Abstract
Interpenetrating polymer networks (IPNs) based on different ratios of a modified bismaleimide resin (BMI/DBA) and cyanate ester (b10) have been synthesized via prepolymerization followed by thermal curing. A systematic thermal degradation study of these new BMI/DBA-CE IPN resin systems was conducted by thermogravimetric analysis at different heating rates both in N2 (thermal stability) and in air (thermal-oxidative stability). The cured BMI/DBA-CE IPN resin systems show excellent thermal stability, which could be demonstrated by 5% weight loss temperature (T5%) ranging between 409 and 423 °C, maximum decomposition rate temperature (Tmax) ranging between 423 and 451 °C, and the char yields at 800 °C ranging from 37% to 41% in nitrogen at a heating rate of 10°C min-1. The apparent activation energy associated with the main degradation stage of the cured BMI/DBA-CE IPN resin systems was determined using the Kissinger method. The obtained results provide useful information in drawing correlation between thermal properties and structure. © 2003 Society of Chemical Industry.
| Original language | English |
|---|---|
| Pages (from-to) | 15-22 |
| Journal | Polymer International |
| Volume | 52 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 2003 |
| Externally published | Yes |
Bibliographical note
Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].Research Keywords
- Bismaleimide
- Cyanate ester
- Interpenetrating polymer network
- Thermal degradation and activation energy
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