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.
| Original language | English |
|---|---|
| Pages (from-to) | 15-22 |
| Number of pages | 8 |
| Journal | Polymer International |
| Volume | 52 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 2003 |
| Externally published | Yes |
ASJC Scopus Subject Areas
- Polymers and Plastics
- Organic Chemistry
- Materials Chemistry
Keywords
- Bismaleimide
- Cyanate ester
- Interpenetrating polymer network
- Thermal degradation and activation energy