Phase structure and thermal properties of bismaleimide/polyethersulfone multi-phase resin system

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Phase structure and thermal properties of bismaleimide/polyethersulfone multi-phase resin system

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DONG Huimin / AN Xuefeng / YAN Li / QIAN Huanghai / CHENG Lijun / LIU Liping / LI Yueteng

The effect of micro phase morphology of bismaleimide (BMI)/polyethersulfone (PES) multi-phase system on the thermal properties was studied by SEM, DMA and TGA. The SEM results suggest that the phase separation exists in the multi-phase BMI/PES resin. Phase inversion happens with the addition of PES up to 15 phr. SEM shows that the subtle micro structure with fine BMI-rich particulate phases is surrounded by continuous PES-rich phase. The glass transition temperature (T_g) belonging to BMI-rich phase of BMI/PES resin is higher than neat BMI resin. BMI/PES-5 resin system exhibits only one T_g and the temperature corresponding to the decrease of initial modulus increased. The high-temperature plastic behavior of BMI/PES resin system is enhanced with the increase of PES. The peak thermal decomposition temperature and char yield of BMI/PES resin are enhanced owing to the excellent interface interaction between BMI and PES as well as the thermal protection effect of PES. The heat resistance of resin systems under N₂ atmosphere are superior to the systems under air atmosphere.

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Title :

Phase structure and thermal properties of bismaleimide/polyethersulfone multi-phase resin system

Contributors:

DONG Huimin (author) / AN Xuefeng (author) / YAN Li (author) / QIAN Huanghai (author) / CHENG Lijun (author) / LIU Liping (author) / LI Yueteng (author)

Published in:

Journal of Aeronautical Materials, Vol 39, Iss 3, Pp 81-87 (2019)

Publication date :

2019

ISSN :

1005-5053

DOI :

https://doi.org/10.11868/j.issn.1005-5053.2018.000092

Type of media :

Article (Journal)

Type of material :

Electronic Resource