Characterization and analysis of torsion property of carbon fiber bundle combined with epoxy resin

Fan, Haichao; Gu, Yi; Wang, Shaokai; Li, Min; Zhang, Zuoguang

doi:10.1002/pc.24823

Cited by 6 publications

(7 citation statements)

References 27 publications

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“…Strong interface bonding produces higher torsion load bearing ability and torsion strength. At the same time, more influence was provided by matrix elongation than interface bonding on torsion strength 45 . Figure 3b represents the ultimate torque after degradation studies.…”

Section: Resultsmentioning

confidence: 97%

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Nano‐hydroxyapatite reinforced polylactic acid bioabsorbable cancellous screws for bone fracture fixations

Prasad,

Bhasney,

Prasannavenkadesan

et al. 2023

J of Applied Polymer Sci

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Bioabsorbable polymer implants aid the fracture treatment to overcome the limitations of metallic implants like stress shielding, corrosion, and revision surgeries. The cancellous screw is one of the internal fixation implants more frequently used in fixation procedures. In this work, nano‐hydroxyapatite (nHAp) reinforced polylactic acid cancellous screws were developed for bone fracture treatment. The biocompatibility and mechanical tests were performed before and after in‐vitro hydrolytic degradation studies. The addition of nanofillers (10 wt% nHAp) enhanced the pullout strength, torsional strength, and shear strength by 18%, 48%, and 5%, respectively. The performed thermal studies confirmed that the nanohydroxyapatite facilitates the crystallization process. A mass loss of about 18% in the case of neat PLA and 12% in the case of 10 wt% nHAp was observed for 90 days of in‐vitro hydrolytic degradation studies. So, the developed combination of biocomposite could help fabricate patient‐specific bioabsorbable fixation devices like screws and plates.

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Section: Resultsmentioning

confidence: 97%

“…At the same time, more influence was provided by matrix elongation than interface bonding on torsion strength. 45 Figure 3b represents the ultimate torque after degradation studies. The studies were conducted for 30, 45, 60, 75, and 90 days.…”

Section: Mechanical Studiesmentioning

confidence: 99%

Nano‐hydroxyapatite reinforced polylactic acid bioabsorbable cancellous screws for bone fracture fixations

Prasad,

Bhasney,

Prasannavenkadesan

et al. 2023

J of Applied Polymer Sci

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“…Former studies manifest that the torsional strength of traditional CF multifilaments is significantly impact by the CF/epoxy interface, and stronger interface adhesion tends to lead higher torsional strength. [ 31 ] Herein, by contrast with the CNTs‐CF multifilament, the CNTs‐CF‐E1 and CNTs‐CF‐S multifilaments show higher torsional strengths, increased by 10.5% and 18.8%, respectively. However, the torsional strength of CNTs‐CF‐H multifilament is lower than that of unmodified CNTs‐CF multifilament, with a 13.8% higher torsional modulus.…”

Section: Resultsmentioning

confidence: 98%

“…The calculation of torsion strength and modulus were referred to BS ISO 18338:2015. [ 31 ] Apparent torsion strength of CF bundle can be calculated as follows:

τ = \frac{16 T}{π d^{3}},

where τ is torsion strength, T is the maximum torque during test, and d is the diameter of sample.…”

Section: Methodsmentioning

confidence: 99%

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Multiscale interfacial enhancement of surface grown carbon nanotubes carbon fiber composites

Xing

et al. 2023

Polymer Composites

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The interface properties between surface grown carbon nanotubes carbon fiber (CNTs-CF) and epoxy resin were investigated by different modification methods. The X-ray photoelectron spectrometer probations show that the pristine CNTs-CF has very low contents of both oxygen element and active carbon element. Taking the naked carbon fiber (CF) without CNTs grown as a reference, the interfacial shear strength (IFSS) of CNTs-CF/epoxy is only 5.6% higher. After heat treatment, chemical modification and sizing treatments, the surface chemical activity of CNTs-CF is improved considerably. In contrast with the IFSS of standard CF/epoxy, the interfacial strength of chemical-treated CNTs-CF-E1/ epoxy is increased to 122.8 MPa by 29.7%. The increasing content of the epoxy active groups at the modified CNTs-CF-E1 surface is conducive to forming covalent bonds between the epoxy resin and the CNTs-CF-E1 surface particularly the activated nanotube surface. The enhancement of CNT/epoxy interface is beneficial to the over whole interface property of the composites. Hence, the compressive and torsion strength of sizing CNTs-CF-E1 bundle combined with epoxy resin are increased by 32.4% and 14.1%, respectively. The SEM images show the failure morphologies of different modification methods, and the enhancement mechanism of multiscale interface is further clarified. Compared with chemical treatment, heat treatment can remove the inert amorphous carbon on the CNTs-CF fiber surface and improve the interface adhesion of CNT/epoxy and CF/epoxy, and surface sizing treatment improves the CF/epoxy interface. The enhancement mechanisms of these modified CNTs-CFs/epoxy should be ascribed to the competition and synergetic effects of the multiscale interfaces, including CNT/CF, CNT/epoxy, and CF/epoxy.

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Improving mechanical and tribological properties of carbon fabric/resin laminated composites by carbon fiber powder

Yan,

Fei,

et al. 2024

Polymer Composites

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Carbon fabric/resin laminated composites (CFRC) are extensively used in aerospace, transportation, and other fields owing to their superiorities of lightweight, high strength, and convenient integral molding. Therefore, strong interlaminar binding and prominent wear resistance are urgent requirements for avoiding premature failure of laminated materials in harsh working environments. To elevate the superficial wear resistance and interlaminar bonding strength of composites simultaneously, the modified composites were obtained by introducing carbon fiber powder (CFP) with different densities on the surface of the composites and between layers. The experimental results indicate that CFP can be evenly distributed in the interlaminar resin enrichment zone of the sample (CFRC‐40) when the deposition density is 40 g/m2. Consequently, CFRC‐40 presents optimal thermal conductivity owing to better heat transfer bridges between layers of the composite established by CFP. At the same time, the mechanical properties such as the tensile, impact, and interlaminar shear strengths of CFRC‐40 are improved by 42.8%, 10.2%, and 8.5%, respectively, compared with the original CFRC, which are attributed to the absorption of crack propagation energy and the inhibition of crack propagation by CFP. Furthermore, the dynamic friction coefficient maintains at a high level after introducing CFP with a density of 40 g/m2, while the wear rate significantly decreases by 61.2% from 12.99 × 10−14 m3(N m)−1 to 5.04 × 10−14 m3(N m)−1. This study proposes an innovative strategy to improve the interlaminar bonding of carbon fabric/resin laminated composite, which is conducive to obtaining composite with excellent mechanical and tribological properties.Highlights A facile and effectual method was adopted to introduce carbon fiber powder (CFP) into the interlamination and surface of the composites simultaneously. The mechanical properties and abrasive resistance of the composites were obviously strengthened by regulating the content and distribution of CFP. CFP at a certain scale, could not only hinder the propagation of cracks but also alleviate the surface wear and extend the service life of composites.

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Characterization and analysis of torsion property of carbon fiber bundle combined with epoxy resin

Cited by 6 publications

References 27 publications

Nano‐hydroxyapatite reinforced polylactic acid bioabsorbable cancellous screws for bone fracture fixations

Nano‐hydroxyapatite reinforced polylactic acid bioabsorbable cancellous screws for bone fracture fixations

Multiscale interfacial enhancement of surface grown carbon nanotubes carbon fiber composites

Improving mechanical and tribological properties of carbon fabric/resin laminated composites by carbon fiber powder

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