Application of Polysulfone Cardo Copolymer in Epoxy Resin Binders for the Production of Carbon Fiber Reinforced Plastics

Stepan V Polunin; Kirill A Atamas; Irina Yu Gorbunova; Darya A Konstantinova; Venera Kh Aleshina

doi:10.1007/s10118-025-3498-0

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Application of Polysulfone Cardo Copolymer in Epoxy Resin Binders for the Production of Carbon Fiber Reinforced Plastics

RESEARCH ARTICLE | Updated：2026-01-30

- Application of Polysulfone Cardo Copolymer in Epoxy Resin Binders for the Production of Carbon Fiber Reinforced Plastics
- Chinese Journal of Polymer Science Vol. 44, Issue 2, Pages: 590-598(2026)
- Affiliations：
  
  Mendeleev University of Chemical Technology of Russia, Miusskaya Square 9, Moscow 125047, Russia
- Author bio：
  
  polunin.s.v@muctr.ru
- Funds：
- DOI：10.1007/s10118-025-3498-0
  CLC：
- Received：21 April 2025，
  
  Accepted：10 November 2025，
  
  Online First：15 January 2026，
  
  Published：05 February 2026
- Accepted：
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Polunin, S. V.; Atamas, K. A.; Gorbunova, I. Y.; Konstantinova, D. A.; Aleshina, V. K. Application of polysulfone cardo copolymer in epoxy resin binders for the production of carbon fiber reinforced plastics. Chinese J. Polym. Sci. 2026, 44, 590–598

Stepan V Polunin, Kirill A Atamas, Irina Yu Gorbunova, et al. Application of Polysulfone Cardo Copolymer in Epoxy Resin Binders for the Production of Carbon Fiber Reinforced Plastics[J]. Chinese Journal of Polymer Science, 2026, 44(2): 590-598.
Polunin, S. V.; Atamas, K. A.; Gorbunova, I. Y.; Konstantinova, D. A.; Aleshina, V. K. Application of polysulfone cardo copolymer in epoxy resin binders for the production of carbon fiber reinforced plastics. Chinese J. Polym. Sci. 2026, 44, 590–598 DOI： 10.1007/s10118-025-3498-0.

Stepan V Polunin, Kirill A Atamas, Irina Yu Gorbunova, et al. Application of Polysulfone Cardo Copolymer in Epoxy Resin Binders for the Production of Carbon Fiber Reinforced Plastics[J]. Chinese Journal of Polymer Science, 2026, 44(2): 590-598. DOI： 10.1007/s10118-025-3498-0.

摘要

The structure-properties relationship of epoxy polymers modified with polysulfone copolymer was determined. Carbon fiber-reinforced plastics containing cardo polysulfone as a modifier are characterized by increased crack resistance and adhesion strength.

Abstract

Carbon-fiber-reinforced plastics (CFRP) with improved mechanical properties based on modified epoxy binders were investigated in this study. By adding 15 parts by weight (p.b.w.) of copolymer of polysulfone with cardo phthalide group (PSFP-70C) to the epoxyanhydride binder

the flexural strength of the epoxy polymer was increased by 60%

the CFRP based on it by 57%

the flexural modulus of the epoxy polymer was increased by 83%

and the composite by 96%. The adhesion strength of the binder to carbon fiber reached a high level at 10 p.b.w. of thermoplastic modifier and increased by 65% compared to the unmodified binder. Scanning electron microscopy (SEM) was used to determine that in epoxyanhydride systems with a polysulfone content of 5–15 p.b.w.

the structure belongs to the "matrix dispersion" type and with a content of 20 p.b.w. to the "interpenetrating phase" type. A heterogeneous structure was also observed using dynamic mechanical analysis.

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references

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