Determination of a degradation-induced limit for the consolidation of CF/PEEK composites using a thermo-kinetic viscosity model

Almeida, Olivier de; Feuillerat, Lisa; Fontanier, Jean-Charles; Schmidt, Fabrice

doi:10.1016/j.compositesa.2022.106943

Cited by 12 publications

(2 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, many resin-rich areas are observed in the interior of the corresponding CFF/PEEK composites, as shown in Figure 8A,B in the first 12 min is similar to that at 390 C, but then increases rapidly, which can be attributed to the rapid crosslinking of PEEK macromolecular chains exacerbated by excessively high temperature. [23,29,30] The crosssection, fracture and surface morphology of the corresponding CFF/PEEK composites confirmed this guess. The rapid increase of PEEK viscosity hinders the effect of CF fabrics being impregnated, resulting in local resin-rich areas appearing inside the CFF/PEEK composites, as shown in Figure 8D.…”

Section: Influence Mechanism Of Molding Temperaturesupporting

confidence: 61%

“…According to the previous optimization in Section 3.2.1 and 3.2.2, the molding temperature and molding pressure used here are 390 C and 2.5 MPa, respectively. The effect of holding time (10,20,30, and 40 min) on the mechanical properties of CFF/PEEK composites is shown in Figure 5. As the holding time increases from 10 to .43 and 7.65% higher than those of the composites prepared with holding time of 10 min, respectively.…”

Section: Influence Of Holding Timementioning

confidence: 99%

See 1 more Smart Citation

Process parameter–mechanical property relationships and influence mechanism of advanced CFF/PEEK thermoplastic composites

Zhang

et al. 2022

Polymer Composites

View full text Add to dashboard Cite

Process parameters, as the core factor to control the forming quality of composites, are crucial for the processing of composites. In this paper, plain-woven carbon fiber fabric reinforced polyether ether ketone (CFF/PEEK) thermoplastic composites are fabricated by hot-pressing process. Influence of the critical process parameters, including molding temperature, molding pressure and holding time, on mechanical properties of CFF/PEEK composites are investigated. The tensile, flexural and short-beam shear properties of CFF/PEEK composites fabricated by different process parameters were tested as evaluation indicators to achieve the optimization of process parameters. Most importantly, to deeply and systematically reveal the influence mechanism of process parameters, the high-temperature contact angle of CFF-PEEK and the viscosity-temperature characteristics of PEEK were observed and analyzed. In addition, the forming quality and microscopic failure modes of CFF/PEEK composites were observed by optical, metallographic and scanning electron microscopy, respectively. This work provides a research idea and technical route for studying the process parameters of fiber reinforced polymer composites and revealing their influence mechanism on mechanical properties.

show abstract

Section: Influence Mechanism Of Molding Temperaturesupporting

confidence: 61%

Section: Influence Of Holding Timementioning

confidence: 99%

Process parameter–mechanical property relationships and influence mechanism of advanced CFF/PEEK thermoplastic composites

Zhang

et al. 2022

Polymer Composites

View full text Add to dashboard Cite

show abstract

Fracture toughness and failure behavior of CF/epoxy composites interleaved with melt‐infused PET, PEI, and PEEK film

Too,

Kumar,

Kim

2024

Polymer Composites

View full text Add to dashboard Cite

This study investigates the effect of incorporating polyethylene terephthalate (PET), polyetherimide (PEI), and polyether‐ether‐ketone (PEEK) thermoplastic films in melt form as interlayers to toughen carbon fiber/epoxy composites. The addition of melt‐infused PET, PEI, and PEEK film into carbon fiber/epoxy composite enhanced the mode‐I interlaminar fracture toughness (ILFT) by 60%, 156%, and 284%, respectively. The primary toughening mechanisms found were plastic deformation and mechanical interlocking through fiber bridging, which left fiber imprint traces on the fracture surface. The mode‐II ILFT of PET, PEI, and PEEK film interleaved laminates was improved by 80%, 188%, and 96%, respectively. Plastic deformation was observed to be the principal toughening mechanism. Notably, these enhancements in ILFT were achieved while simultaneously increasing interlaminar shear strength. These findings show the role of hot‐melt‐infused PET, PEI, and PEEK thermoplastic films in the improvement of ILFT of composites which is crucial in the design of damage‐tolerant composite structures.Highlights Composites were interleaved with PET, PEI, and PEEK films via melt‐infusion. Mode‐I and mode‐II ILFT were significantly enhanced, up to 284% for PEEK. Failure exhibited plastic deformation, extensive fiber bridging, and pull‐out. Melt‐infusion created complex, mechanically interlocked interfaces.

show abstract

Sand casting-inspired surface modification of 3D-printed porous polyetheretherketone scaffolds for enhancing osteogenesis

Yu,

Zhang,

Guo

et al. 2024

Composites Part A: Applied Science and Manufacturing

View full text Add to dashboard Cite

Determination of a degradation-induced limit for the consolidation of CF/PEEK composites using a thermo-kinetic viscosity model

Cited by 12 publications

References 27 publications

Process parameter–mechanical property relationships and influence mechanism of advanced CFF/PEEK thermoplastic composites

Process parameter–mechanical property relationships and influence mechanism of advanced CFF/PEEK thermoplastic composites

Fracture toughness and failure behavior of CF/epoxy composites interleaved with melt‐infused PET, PEI, and PEEK film

Sand casting-inspired surface modification of 3D-printed porous polyetheretherketone scaffolds for enhancing osteogenesis

Contact Info

Product

Resources

About