Compaction behaviour of continuous fibre-reinforced thermoplastic composites under rapid processing conditions

Valverde, Mario A.; Belnoue, Jonathan P.-H.; Kupfer, Robert; Kawashita, Luiz F.; Gude, Μaik; Hallett, Stephen R.

doi:10.1016/j.compositesa.2021.106549

Cited by 13 publications

(9 citation statements)

References 61 publications

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“…The simplifying assumptions allow in some cases to condense the full 3D formulation to a 2D problem without compromising the physical meaning of the studied flow mechanism. Once the pressure-thickness-thickness rate response is identified, all the models in the library can be used to predict full 3D statesincluding transverse deformations or amount of resin bled through the fibre network [27,28]. This is fundamentally important when trying to assess not only the thickness evolution but also the process occurring at local scalese.g.…”

Section: Model Identification: Criteria For Model Performancementioning

confidence: 99%

“…closure of the gaps between the deposited tapes or pressure build-up in resin to assess void suppression. It was shown that the proposed simplifying hypotheses in application to IM7/8552 and IMA/M21 prepregs [1], [2], [12], [24], [26], [27] yield excellent modelling predictive capability, which has been validated with various load cases for laminates and complex composite parts.…”

Section: Model Identification: Criteria For Model Performancementioning

confidence: 99%

See 1 more Smart Citation

Revising testing of composite precursors – A new framework for data capture in complex multi-material systems

Koptelov

Belnoue

Georgilas

et al. 2022

Composites Part A: Applied Science and Manufacturing

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Section: Model Identification: Criteria For Model Performancementioning

confidence: 99%

Section: Model Identification: Criteria For Model Performancementioning

confidence: 99%

Revising testing of composite precursors – A new framework for data capture in complex multi-material systems

Koptelov

Belnoue

Georgilas

et al. 2022

Composites Part A: Applied Science and Manufacturing

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“…[27][28][29][30][31] The commercially available products include Frekote and Marbocote release agents. [32][33][34] The releasing mechanism of the silanebased release agent coating has been well explained by the low surface energy. 15,35 Because release agent coatings have the risk of being adsorbed by the polymer part, which may reduce the mechanical properties of the product, the use of sacrificial release agents is decreasing especially in the high-end application areas.…”

Section: Introductionmentioning

confidence: 99%

The modified boundary layer mechanism for the release between polyimide film and poly(ether ketone ketone) thermoplastics

Yang,

Dissevelt,

et al. 2024

J of Applied Polymer Sci

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Sticking between the thermoplastic polymer and metal tool is a crucial issue, as it determines whether the manufactured part can be ejected from the metal mold. Polyimide (PI) release films have been widely used in the processing of fiber‐reinforced thermoplastic polymer composites. Compared with other release mediums such as release agents, PI release film has a higher release efficiency. However, the underlying release mechanism is still not well understood which is essential to improve their performance further and reduce the cost. In this paper, poly(ether ketone ketone) (PEKK) polymer was melted and cooled down between two PI films. The surface morphologies and chemical compositions of the PI film and PEKK were characterized both before and after release using atomic force microscope, x‐ray photoelectron spectroscopy, contact angle measurements, and confocal microscopy. It showed that a thin PI layer was transferred from the PI release film to the PEKK surface during the release process. Based on these experimental results, a modified boundary layer mechanism is proposed as a hypothesis to describe the release mechanism of PI films. Our results give a fundamental understanding of how PI film works for the release of thermoplastics with high processing temperatures and may help to improve the performance and reduce the costs of existing PI films and may give guidance to the design of new release media.

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“…Thermoplastic composites (TPC) are rapidly emerging as alternative materials for auto parts owing to recyclability and excellent stiffness-and strength-to-weight ratios [11][12][13]. Due to strengthening environmental regulations, thermoplastic composites (TPCs) are actively conducted to develop recyclable automobile composite components.…”

Section: Introductionmentioning

confidence: 99%

“…Over the past three decades, the preparation [27], interface [28,29], welding [30], mechanical properties [31,32], flame retardant properties [33] and stamping forming [34] of continuous glass fiber reinforced polypropylene composites were comprehensively and systematically researched. However, there were few studies on continuous carbon fiber reinforced polypropylene composites [12].…”

Section: Introductionmentioning

confidence: 99%

Crystallization and mechanical properties of carbon nanotube/continuous carbon fiber/metallocene polypropylene composites

Tan

Guo²,

Tan

et al. 2022

Mater. Res. Express

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In this work, a high fluidity polypropylene prepared with the metallocene catalyst (mPP) was used as matrix, carbon nanotube (CNT) and continuous carbon fiber (CCF) were added to prepare composites, and their mechanical properties, melting and crystallization behavior were investigated. In the mechanical properties, the effects of tension force in the preparation process and compatibilizer maleic anhydride grafted polypropylene (MAPP) on the tensile strength of the composites were researched. The results show that the tensile strength of the composites increases first and then decreases with the increase of tractive force. In addition, the melting and crystallization behaviors and dynamic mechanical behaviors of mPP, CNT/mPP and CNT/CCF/mPP composites were characterized and studied by a differential scanning calorimetry (DSC) and dynamic mechanical analyzer (DMA). The results show that the melting point (Tm ), crystallization temperature (Tc ) and storage modulus (E') of CNT/mPP are all increased by adding 1wt% CNT, especially the Tc is increased by 8.8 ºC. It shows that after CNT was added to mPP as inorganic carbon material, it plays a prominent role in heterogeneous nucleation. After CCF was composited with CNT/mPP, the composites with CCF content of 30 and 42wt% were prepared, and their Tm , Tc , crystallinity (Xc ) and E' were all improved, especially E' was greatly improved, such as the initial E' was increased by 5.64 and 11.74 times. Even at the end of the curve, the E' of the composites with CF is still significantly higher than that of mPP and CNT/mPP. It indicates that adding CCF will greatly improved the deformation resistance and load deformation temperature of mPP.

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Compaction behaviour of continuous fibre-reinforced thermoplastic composites under rapid processing conditions

Cited by 13 publications

References 61 publications

Revising testing of composite precursors – A new framework for data capture in complex multi-material systems

Revising testing of composite precursors – A new framework for data capture in complex multi-material systems

The modified boundary layer mechanism for the release between polyimide film and poly(ether ketone ketone) thermoplastics

Crystallization and mechanical properties of carbon nanotube/continuous carbon fiber/metallocene polypropylene composites

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