Optimization of interfacial bonding properties between thermoplastic liners and carbon fiber‐reinforced composites by atmospheric‐pressure plasma and failure mechanism study

Qi, Liangliang; Min, Wei; Gao, Ruize; Li, Zhiqi; Yu, Muhuo; Sun, Zeyu

doi:10.1002/pc.27249

Cited by 6 publications

(4 citation statements)

References 47 publications

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“…Currently, the surface treatment of carbon fiber composites includes surface chemical modification, removal of the surface weak boundary layer, improved wetting of the low-energy surface, and increased surface roughness, which can enlarge the bondable surface area or improve the mechanical interlocking. − , Surface chemical modification can be achieved by grafting multiwalled carbon nanotubes (MWCNTs) onto a carbon fiber surface using silane coupling agent as carrier . Removal of the surface weak boundary layer can be achieved through UV or picosecond laser cleaning. , Improving the wetting of low-energy surface and increasing the surface roughness of carbon fiber composites can be achieved through mechanical methods (such as manual hand sanding, grit blasting, and peel-ply plus grit blasting) , and energetic techniques, such as plasma treatment ,− and laser processing. ,− Among them, the mechanical method had the advantage of low cost, but its flexibility, adjustability, efficiency, and precision were relatively low. Plasma treatment has the advantage of relatively high efficiency and precision, but it needs a special atmosphere environment and inorganic or organic masks; the treatment effect is time-sensitive; the treatment process is relatively complex, and not flexible enough; and the equipment is generally expensive.…”

Section: Introductionmentioning

confidence: 99%

Controllable Fabrication of Hydrophilic Surface Micro/Nanostructures of CFRP by Femtosecond Laser

Zuo,

Liu,

et al. 2024

ACS Omega

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Carbon fiber reinforced polymer (CFRP), a highly engineered lightweight material with superior properties, is widely used in industrial fields, such as aerospace, automobile, and railway transportation, as well as medical implants and supercapacitor. This work presents an effective surface treatment method for the controllable fabrication of hydrophilic surface micro/nanostructures of CFRP through femtosecond laser processing. Selective removal of the epoxy resin and leaving the carbon fibers exposed are achieved when CFRP is weakly ablated by a femtosecond laser. The diameters and structures of the carbon fibers can be controlled by adjusting the laser processing parameters. Three-dimensional surface micro/nanostructures are processed when CFRP is strongly ablated by a femtosecond laser. Meanwhile, the transformation of the sp 2 orbitals to sp 3 orbitals of graphitic carbons of carbon fibers is induced by a femtosecond laser. Moreover, the investigation of surface roughness and wettability of femtosecond laser-processed CFRP indicates increased roughness and excellent hydrophilicity (a contact angle of 28.1°). This work reveals the effect of femtosecond laser processing on the regulation of the physicochemical properties of CFRP, which can be applicable to surface treatment and performance control of other fiber-resin composites. The excellent hydrophilicity will be conducive to the combination of CFRP with other materials or to reducing the friction resistance of CFRP used in medical implants.

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Section: Introductionmentioning

confidence: 99%

Controllable Fabrication of Hydrophilic Surface Micro/Nanostructures of CFRP by Femtosecond Laser

Zuo,

Liu,

et al. 2024

ACS Omega

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“…[20][21][22] There is a large literature on plasma modification of composites, but most of the research is aimed at improving the interface between reinforcement and matrix, [23][24][25][26] and a few studies focus on the adhesive bonding enhancement between composite components. Qi et al 27 optimized the atmospheric-pressure plasma parameters for maximizing interfacial bonding properties between thermoplastic liner and CFRP to avoid debonding failure. The optimum process parameters including time, nozzleto-specimen distance and gas flow rate were found by measuring the climbing drum peel strength, the flatwise tensile strength and the strain energy release rate of the treated samples.…”

Section: Introductionmentioning

confidence: 99%

Association analysis between the distribution of surface physical characteristics and bonding performance of carbon fiber composites

Wang,

Jia,

et al. 2024

Polymer Composites

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Effects of plasma treatment distance on the adhesion properties of carbon fiber composites were investigated, and the association between the distribution of surface physical characteristics on the composites and their bonding properties was discussed. After plasma treatment at different distances, surface morphology of the bonding area was obtained and the roughness distribution model was established. The change in surface physical characteristics directly influences the wettability of the bonding surface and the tensile shear strength (TSS) of the bonded components. When the TSS showed an increase by 19.47% at the treatment distance of 15 mm, metallographic images indicated that the bonding layer was integrated with the composites and the joint in the component was dominated by cohesive failure. When the TSS showed a decrease by 30.72% at the treatment distance of 5 mm, metallographic images indicated that voids and delamination were introduced in the bonding layer and fiber tearing failure mode appeared in the plasma etched area. Moisture‐heat resistance of the bonded components was also considered and a noticeable increase in water absorption was observed in the case of excessive treatment at the distance of 5 mm, which was also related to the distribution of physical characteristics induced by the plasma treatment.Highlights Surface characteristic distribution of plasma‐modified composites was analyzed. State of resin and fibers on composite surface varied with the treatment distance. Semi‐annular plasma treatment traces appeared in the roughness distribution. The high roughness in the distribution played a key role in bonding properties. Performance degradation due to close treatment was also distribution‐dependent.

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“…6 With its high strength and low density, CFRP has been widely applied for aviation, 7-9 automobile 10,11 and pressure vessels fields. 12,13 The specific strength of CFRP can reach 1147.4 kNÁm/kg, 3 while that of conventional 45# steel is about 45.5 kNÁm/kg. If hydraulic cylinders are manufactured with CFRP, the hydraulic cylinder weight would be significantly reduced, which would enhance the aircraft's performance.…”

Section: Introductionmentioning

confidence: 99%

“…With its high strength and low density, CFRP has been widely applied for aviation, 7–9 automobile 10,11 and pressure vessels fields 12,13 . The specific strength of CFRP can reach 1147.4 kN·m/kg, 3 while that of conventional 45# steel is about 45.5 kN·m/kg.…”

Section: Introductionmentioning

confidence: 99%

Design, manufacture, and experiments of lightweight CFRP hydraulic cylinder tube without metal liner

Li,

Shang,

Wan

et al. 2023

Polymer Composites

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Hydraulic cylinders are widely used in aircraft rudder surface control, landing gear retraction, flaps and speed brakes retraction, ground steering driving, and engine thrust reverser control. The huge weight of hydraulic cylinders severely limits the aircraft's potential for increased range, maneuverability, energy efficiency, and carrying capacity. To achieve the maximum weight reduction, the carbon fiber reinforced polymer (CFRP) hydraulic tube without a metal liner is designed in this paper. In response to the lack of a parameter calculation method for CFRP hydraulic tubes, the accurate calculation method is developed through mechanical modeling and analysis of parameter influence law. For the structure design challenges of connection, sealing, and friction of CFRP hydraulic tube without metal liner, we have proposed and verified the wave contour inlaid structure, three leak‐proof solutions of the connection interface, the leak‐proof structure of the wound CFRP body and the seal friction pair. For the difficulties of multi‐material and high‐precision molding, a new process of split manufacturing‐combined molding is developed to achieve high‐precision and low‐cost manufacturing. Finally, the prototype is manufactured and tested by the presented method, and its weight reduction ratio is 56.64% compared with the original metal hydraulic tube. This study has further matured the application of CFRP hydraulic tubes without metal liners and has great lightweight benefits in aircraft.Highlights CFRP hydraulic tube without metal liner is designed to reduce weight. An accurate calculation method of CFRP parameters is developed. Connection structure, leak‐proof structure, and seal friction pair are designed. The high‐precision and low‐cost molding process is innovatively proposed.

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Optimization of interfacial bonding properties between thermoplastic liners and carbon fiber‐reinforced composites by atmospheric‐pressure plasma and failure mechanism study

Cited by 6 publications

References 47 publications

Controllable Fabrication of Hydrophilic Surface Micro/Nanostructures of CFRP by Femtosecond Laser

Controllable Fabrication of Hydrophilic Surface Micro/Nanostructures of CFRP by Femtosecond Laser

Association analysis between the distribution of surface physical characteristics and bonding performance of carbon fiber composites

Design, manufacture, and experiments of lightweight CFRP hydraulic cylinder tube without metal liner

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