Non-Isothermal Curing Kinetics of a Modified Benzoxazine Resin System Suitable for Hot-Melt Prepreg Preparation

Abstract:

Non-isothermal DSC was used to study the cure kinetics of a flame-retardant benzoxazine resin system (BZ501-1) suitable for hot-melt prepreg preparation. The variation of activation energy with conversion for BZ501-1 system was investigated by using Flynn-Wall-Ozawa method, and the average value of activation energy obtained from this method was 100.5 kJ/mol. After that, the model function that depends on the reaction mechanism for the non-isothermal cure of BZ501-1 system was determined by Málek method, and the result showed that Šesták-Berggren model can generally simulate well the reaction rate. Finally, the isothermal curing behavior of BZ501-1 at 200 °C was predicted by using the obtained rate equation, and the result showed that there was no significant difference between the experiment conversions and the predicted ones. The predicted results at different temperatures indicated that the curing rate increased gradually with increasing the curing temperature.

• Periodical: Solid State Phenomena (Volume 266)
• Pages: 128-134
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.266.128
• Online since: October 2017
• Authors: Meng Jin Fan*, Yu Zhou, Yi Hao Luan, Qian Zang, Dong Xia Zhang, Cheng Yuan Shang, Wen Ge Jiang
• Keywords: Benzoxazine Resin System, DSC, Non-Isothermal Curing Kinetics

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