High performance thermoplastic polymer for the compressive behaviour of carbon fibre reinforced composites

Liu, Ankang; Wang, Bing; Li, Fēi

doi:10.1108/prt-10-2019-0090

Cited by 3 publications

(3 citation statements)

References 33 publications

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“…Such properties are extremely interesting for a large field of applications for high-end machinery manufacturing, nuclear engineering, aerospace, automotive industry, and orthopedic implants. [2][3][4][5][6] The research of PEEK-based biological composites has attracted extensive attention, since the biocompatibility of † These authors contributed equally to this work.…”

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confidence: 99%

Effect of hydroxyapatite content and particle size on the mechanical behaviors and osteogenesis in vitro of polyetheretherketone–hydroxyapatite composite

Wang

et al. 2021

Polymer Composites

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Poly-ether-ether-ketone (PEEK) possesses excellent biocompatibility and similar elastic modulus as bones but suffers from poor osseointegration; usually, the addition of hydroxyapatite (HA) is considered as an effective way to improve the osseointegration of PEEK implant interface. To investigate the effect of HA content and particle size on the mechanical behaviors and osteogenesis in vitro of PEEK-HA composites, the PEEK-HA specimens with variable HA content and particle size have been fabricated by powder mixing-heat press method and characterized by mechanical and biological tests. The results showed that the tensile/bending strength and elongation at break of PEEK-HA are significantly impaired as the increasing HA amount, but the modulus improves. The compressive strength and modulus are improved as the increasing amount of HA. The PEEK-HA with smaller HA particle size possesses higher-performance tensile/bending and lower-performance compressive properties. In osteogenesis tests in vitro, the results reveal that the cells amount attached on the substrate rises and the cells flatten more evenly with numerous cytoplasmic processes on greater area with the increasing HA content and decreasing particle size. The PEEK-HA group that HA content is 20 wt% and particle size is 20 nm exhibits optimal-performance osteogenesis in vitro, while maintaining sufficient mechanical properties.biological applications of polymers, composites, mechanical properties, thermoplastics | INTRODUCTIONPoly-ether-ether-ketone (PEEK) is linear aromatic semicrystalline thermoplastic engineering plastic; the macromolecular chain is composed of benzene ring connected by ether bond and ketone bond in counterpoint, and the outer electrons have a high delocalization range. [1] This structure makes it extremely stable and great resistant to chemicals, heat, and radiation. Such properties are extremely interesting for a large field of applications for high-end machinery manufacturing, nuclear engineering, aerospace, automotive industry, and orthopedic implants. [2][3][4][5][6] The research of PEEK-based biological composites has attracted extensive attention, since the biocompatibility of † These authors contributed equally to this work.

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confidence: 99%

Effect of hydroxyapatite content and particle size on the mechanical behaviors and osteogenesis in vitro of polyetheretherketone–hydroxyapatite composite

Wang

et al. 2021

Polymer Composites

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“…When these studies are examined, it is understood that the dominant failure modes occurring in composites exposed to impact testing are delamination, matrix cracking and fiber breakage. 59–61…”

Section: Resultsmentioning

confidence: 99%

Impact performances and failure modes of glass fiber reinforced polymers in different curvatures and stacking sequences

Kaboglu

Eken

Yürektürk

2021

Journal of Composite Materials

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Recently, glass fiber reinforced polymer composites have been increasingly used in applications which are exposed to impact loads due to their high strength, low weight, and corrosion resistance properties. Therefore, the effect of curvature of composite laminate on their impact resistance is important. In this study, the mechanical properties of three curvature diameters and two stacking sequences, which have not been compared before, were examined and compared. The diameter of curved composites is 760 mm, 380 mm, and 304 mm and flat designated as A, B, C, and D, respectively. The fiber stacking orders are [0/0/-45/+45/90/90]S and [90/90/-45/+45/0/0]S designated as Type 1 and Type 2, respectively. The drop-weight impact tests were performed and failure modes of composites were examined. It was observed that the impact resistance decreases with the increase of curvature, where 760 mm diameter and Type 2 composites had the highest strength in all of the composites. In addition, delamination, fiber breakage, and matrix cracking failure modes were observed in the composites after impact. The reason why the strength decreases as the curvature of the composite increases is that the curved areas create an effect that increases the external force applied. The reason why Type 2 stacking order is more durable than Type 1 stacking order is that the 90° fiber direction in the bottom layer has a damping effect on the applied force. According to the results of this study, composite materials with larger diameter and stacking order starting with 0° provides more mechanical strength. [Formula: see text]

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“…Thermoplastic composites are significantly sensitive to temperature. The matrix softening results in a decrease in the modulus and strength of composites, especially above the glass-transition temperature [ 28 , 29 , 30 ]. Schoßig et al found that the dynamic tensile strength and modulus of thermoplastic composites decreased with the increase in temperature [ 31 ].…”

Section: Introductionmentioning

confidence: 99%

The Out-of-Plane Compression Response of Woven Thermoplastic Composites: Effects of Strain Rates and Temperature

et al. 2021

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The dynamic mechanical response of high-performance thermoplastic composites over a wide range of strain rates is a challenging research topic for extreme environmental survivability in the field of aerospace engineering. This paper investigates the evolution of the dynamic properties of woven thermoplastic composites with strain rate and damage process at elevated temperatures. Out-of-plane dynamic-compression tests of glass-fiber (GF)- and carbon-fiber (CF)-reinforced polyphenylene sulfide (PPS) composites were performed using a split Hopkinson pressure bar (SHPB). Results showed that thermoplastic composites possess strain-rate strengthening effects and high-temperature weakening dependence. GF/PPS and CF/PPS composites had the same strain-rate sensitivity (SRS) below the threshold strain rate. The softening of the matrix at elevated temperatures decreased the modulus but had little effect on strength. Some empirical formulations, including strain-rate and temperature effects, are proposed for more accurately predicting the out-of-plane dynamic-compression behavior of thermoplastic composites. Lastly, the final failure of the specimens was examined by scanning electron microscopy (SEM) to explore potential failure mechanisms, such as fiber-bundle shear fracture at high strain rates and stretch break at elevated temperatures.

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High performance thermoplastic polymer for the compressive behaviour of carbon fibre reinforced composites

Cited by 3 publications

References 33 publications

Effect of hydroxyapatite content and particle size on the mechanical behaviors and osteogenesis in vitro of polyetheretherketone–hydroxyapatite composite

Effect of hydroxyapatite content and particle size on the mechanical behaviors and osteogenesis in vitro of polyetheretherketone–hydroxyapatite composite

Impact performances and failure modes of glass fiber reinforced polymers in different curvatures and stacking sequences

The Out-of-Plane Compression Response of Woven Thermoplastic Composites: Effects of Strain Rates and Temperature

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