Application of Polysulfone Cardo Copolymer in Epoxy Resin Binders for the Production of Carbon Fiber Reinforced Plasticsстатья
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Дата последнего поиска статьи во внешних источниках: 4 марта 2026 г.
Аннотация: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.