Abstract
A condensed polynuclear aromatic (COPNA) resin was synthesized using coal tar pitch as monomer and divinylbenzene (DVB) as cross-linking agent in catalysis of p-toluene sulfonic acid (PTS). The reaction mechanism was studied using Fourier transform infrared (FT-IR) and 1H nuclear magnetic resonance (1H-NUR) spectroscopy technologies. The differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) were employed to study curing reaction and thermo-stability of COPNA resin. The results show that coal tar pitch and DVB can be used to synthesize COPNA resin, the reaction mechanism of which is a positive ion-typed condensation polymerization catalyzed by acid. The curing reaction of B stage COPNA resin can be easily controlled and apparent activation energy is 17.06 kJ/mol. Moreover, C stage COPNA resin possesses good thermo-stability, and its thermal decomposition temperature is up to 450°C in nitrogen.
| Original language | English |
|---|---|
| Pages (from-to) | 562-566 |
| Number of pages | 5 |
| Journal | Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University |
| Volume | 19 |
| Issue number | 4 |
| State | Published - Nov 2001 |
Keywords
- Coal tar pitch
- COPNA (condensed polynuclear aromatic)
- Curing reaction
- DVB (divinylbenzene)
- Reaction mechanism
- Thermo-stability