Fabrication and mechanical properties of a high-performance PEEK-PEI hybrid multilayered thermoplastic matrix composite reinforced with carbon fiber

This paper presents a method for manufacturing a hybrid matrix composite material reinforced with a woven carbon fiber that combines the properties of two thermoplastic polymers: PEEK (polyether-ether-ketone) and PEI (polyether-imide). The manufacturing process involves a multilayer architecture and...

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Veröffentlicht in:Composites. Part A, Applied science and manufacturing Applied science and manufacturing, 2024-10, Vol.185, p.108308, Article 108308
Hauptverfasser: Toro, Sebastian Andrés, González, Carlos, Fernández-Blázquez, Juan P., Ridruejo, Alvaro
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Sprache:eng
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Zusammenfassung:This paper presents a method for manufacturing a hybrid matrix composite material reinforced with a woven carbon fiber that combines the properties of two thermoplastic polymers: PEEK (polyether-ether-ketone) and PEI (polyether-imide). The manufacturing process involves a multilayer architecture and a single hot-pressing consolidation step. Experimental tests — including uniaxial tensile tests, delamination tests in Mode I and impact tests at low velocities — were conducted to compare the resulting laminate with single matrix materials (PEEK/CF and PEI/CF).The improvements in strain to failure by 48 % in tensile tests with fiber orientation at ±45∘ and in delamination force by 13 % in low velocity impact tests with respect to PEI/CF show that the heterogeneous matrix blend maintains the crystalline content and excellent elastoplastic response of PEEK while taking advantage of the affordability, lower processing temperature and toughness of PEI. •Novel composite with PEI-impregnated CF fabric and PEEK consolidated in one step•Fiber impregnation benefits from the excellent PEI/CF compatibility•Controlled PEEK-PEI diffusion to obtain strong interfaces and keep PEEK crystallinity•PEEK-PEI/CF hybrid: enhanced tensile response at ±45∘ and high toughness in DCB tests•Improved damage tolerance of hybrid laminates under low-velocity impact tests
ISSN:1359-835X
DOI:10.1016/j.compositesa.2024.108308