The Effect of Curing Cycle on Interlaminar Shear Strength and Thermal Properties of Carbon Fiber Composite of High Temperature Maleimide-containing Phthalonitrile Dual-curing Resin

Hassan Fattahi; Milad Hatami; Mohammad Reza Ehsani; Mehrzad Mortezaei

doi:10.1007/s10118-026-3798-z

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The Effect of Curing Cycle on Interlaminar Shear Strength and Thermal Properties of Carbon Fiber Composite of High Temperature Maleimide-containing Phthalonitrile Dual-curing Resin

RESEARCH ARTICLE | Updated：2026-08-28

- The Effect of Curing Cycle on Interlaminar Shear Strength and Thermal Properties of Carbon Fiber Composite of High Temperature Maleimide-containing Phthalonitrile Dual-curing Resin
- Chinese Journal of Polymer Science Vol. 44, Pages: 1-14(2026)
- Affiliations：
  
  Department of Polymer Engineering, Composite Research Institute, Faculty of Materials and Manufacturing Technologies, Malek Ashtar University of ‎Technology, Tehran 1774-15875, Iran
- Author bio：
  
  fattahi@mut.ac.ir, hassan.fattahi@gmail.com
- Funds：
- DOI：10.1007/s10118-026-3798-z
  CLC：
- Received：17 May 2026，
  
  Accepted：30 June 2026，
  
  Online First：28 August 2026，
  
  Published：2026-07
- Accepted：
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Fattahi, H.; Hatami, M.; Ehsani, M. R.; Mortezaei, M. The effect of curing cycle on interlaminar shear strength and thermal properties of carbon fiber composite of high temperature maleimide-containing phthalonitrile dual-curing resin. Chinese J. Polym. Sci. https://doi.org/10.1007/s10118-026-3798-z

Hassan Fattahi, Milad Hatami, Mohammad Reza Ehsani, et al. The Effect of Curing Cycle on Interlaminar Shear Strength and Thermal Properties of Carbon Fiber Composite of High Temperature Maleimide-containing Phthalonitrile Dual-curing Resin[J/OL]. Chinese Journal of Polymer Science, 2026, 441-14.
Fattahi, H.; Hatami, M.; Ehsani, M. R.; Mortezaei, M. The effect of curing cycle on interlaminar shear strength and thermal properties of carbon fiber composite of high temperature maleimide-containing phthalonitrile dual-curing resin. Chinese J. Polym. Sci. https://doi.org/10.1007/s10118-026-3798-z DOI：

Hassan Fattahi, Milad Hatami, Mohammad Reza Ehsani, et al. The Effect of Curing Cycle on Interlaminar Shear Strength and Thermal Properties of Carbon Fiber Composite of High Temperature Maleimide-containing Phthalonitrile Dual-curing Resin[J/OL]. Chinese Journal of Polymer Science, 2026, 441-14. DOI： 10.1007/s10118-026-3798-z.

摘要

Abstract

In this study

a phthalonitrile monomer containing a maleimide group (MPN) with a melting point of 106.8 °C was successfully synthesized. Differential scanning calorimetry (DSC) showed that the MPN resin can act as an autocatalyzed resin without any curing agent. The monomer was then cured using diallyl bisphenol A (DABA) as the curing agent. Based on the results of FTIR analysis

a suitable curing cycle was established. Given the dual-stage curing behavior of the monomer

three composite samples were fabricated using three different curing cycles to investigate the relationship between the polymer structure and final properties. Interlaminar shear strength (ILSS) tests showed that samples with approximately 95% curing degree for the phthalonitrile part of this resin exhibited an ILSS of approximately 37.5 MPa. Dynamic mechanical thermal analysis (DMTA) confirmed the formation of a thermally stable and rigid crosslinked network in the synthesized composite. The storage modulus (

′) exhibited relatively high values even at incomplete curing stages

maintaining significant stiffness up to approximately 100 °C

which highlights the early formation of a semi-crosslinked structure. Thermogravimetric analysis (TGA) revealed that the fabricated composite had good thermal resistance with

and

10%

of 484 and 584 °C

respectively

with a char yield of 84% at 900

°C.

关键词

Keywords

references

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