Results show that the temperature for which a thermal stress begins and the temperature at which it reaches a maximum correlate well with exothermal start and peak temperatures from DSC.

• 结果表明:在热稳化定化过程中PAN纤维化学应力峰的起始温度和峰顶温度很好地对应了纤维DSC起始与峰顶的温度,因而可采用化学热应力表征PAN纤维环化的反应速率和程度。