Enhancing mechanical strength of carbon fiber-epoxy interface through electrowetting of fiber surface

Chen, Xiaoming; Wen, Kaiqiang; Wang, Chun‐Jiang; Cheng, Siyi; Wang, Shuo; Ma, Hechuan; Tian, Hongmiao; Zhang, Jie; Li, Xiangming; Shao, Jinyou

doi:10.1016/j.compositesb.2022.109751

Cited by 33 publications

(9 citation statements)

References 53 publications

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“…These values were equivalent to 11.31, 12.69, 14.32, 17.38, 22.33, and 18.19% when compared to those modified CFs without the application of electrical stimulus, respectively. The reason for the IFSS enhancement under the applied electrical stimulus may be attributed to the resin thoroughly infiltrating the small pores on the fiber surface, leading to the formation of a conformal contact interface . To verify this suggestion, the cross sections of interfacial morphologies (CF–PCNT-40 s) and the corresponding distribution of carbon elements in the EDS line scan were obtained after the application of the electrical stimulus (Figure b).…”

Section: Resultsmentioning

confidence: 99%

“…However, insufficient resin infiltration may occur due to deep pores and weak capillary force. In our previous study, an electrically assisted wetting strategy was developed for increased resin impregnation and interfacial adhesion in CF composites . A schematic diagram of the process is provided in Figure S6.…”

Section: Resultsmentioning

confidence: 99%

“…The reason for the IFSS enhancement under the applied electrical stimulus may be attributed to the resin thoroughly infiltrating the small pores on the fiber surface, leading to the formation of a conformal contact interface. 7 To verify this suggestion, the cross sections of interfacial morphologies (CF−PCNT-40 s) and the corresponding distribution of carbon elements in the EDS line scan were obtained after the application of the electrical stimulus (Figure 8b). The voids around the interface between the fiber and resin were clearly observed due to the incomplete infiltration of the resin, resulting in the nonconformal interface (Figure 5e 1 ), and accordingly a carbon elemental content plateau was visible at the interphase transition zone near the surface of the CF (Figure 5e 2 ).…”

Section: Wettability and Interfacial Properties Of The Carbon Fiber A...mentioning

confidence: 99%

“…In our previous study, an electrically assisted wetting strategy was developed for increased resin impregnation and interfacial adhesion in CF composites. 7 A schematic diagram of the process is provided in Figure S6. In this case, CF and 19% when compared to those modified CFs without the application of electrical stimulus, respectively.…”

Section: Wettability and Interfacial Properties Of The Carbon Fiber A...mentioning

confidence: 99%

“…5,6 The characteristic of the interface between the fiber reinforcement and matrix is a critical aspect affecting the overall mechanical properties of CFRPs. 7,8 For instance, strong interfacial bonding would facilitate good stress transfer from the matrix to the fiber, thereby enhancing the overall strength of CFRPs. 9 Therefore, obtaining high-performance CFRPs with combined high strength and toughness by engineering the interface is a feasible and promising approach.…”

Section: Introductionmentioning

confidence: 99%

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Constructing a Porous Structure on the Carbon Fiber Surface for Simultaneously Strengthening and Toughening the Interface of Composites

Chen

Hui

Cheng

et al. 2022

ACS Appl. Mater. Interfaces

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The demand for both strength and toughness is perpetual in fiber-reinforced composites. Unfortunately, both properties are often mutually exclusive. As the mechanical properties of the composites are highly dependent on their interfacial properties, engineering interfaces between the fiber and matrix would be vital to overcome the conflict between strength and toughness. Herein, inspired by the physical interfacial architecture of grassroots-reinforced soil composites, a porous carbon nanotube−Mg(OH) 2 /MgO hybrid structure was constructed on the fiber surface via water electrolysis reaction and electrophoretic deposition process. The effects of the porous structure on the fiber filaments' mechanical properties, as well as the thickness on the interfacial properties, were all investigated. The results showed that fully covered porous structures on the fiber surface slightly enhanced the reliability of a single fiber in terms of mechanical properties by bridging the surface defects on the fiber. The interfacial shear strength and toughness of the porous structure-coated fiber/resin composite reached up to 92.3 MPa and 121.2 J/m 2 , respectively. These values were 61.30 and 121.98% higher than those of pristine fiber/resin composites, respectively. The strengthening effect was ascribed to the synergistic effects that improved numerous interfacial bonding areas and mechanical interlocking morphologies. The toughening mechanism was related to crack deflection, microcrack generation, and fracture of the porous structure during interfacial failure. Additional numerical studies by finite element analysis further proved the enhancement mechanism. Overall, the proposed method looks promising for producing advanced carbon fiber-reinforced polymer composites with excellent strength and toughness.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Wettability and Interfacial Properties Of The Carbon Fiber A...mentioning

confidence: 99%

Section: Wettability and Interfacial Properties Of The Carbon Fiber A...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Constructing a Porous Structure on the Carbon Fiber Surface for Simultaneously Strengthening and Toughening the Interface of Composites

Chen

Hui

Cheng

et al. 2022

ACS Appl. Mater. Interfaces

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Self‐resistance heating forming and performance analysis of Al/PEEK/CFRP laminates

Zhang

Lü

et al. 2022

Polymer Composites

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To shorten the preparation cycle of Al/PEEK/CFRP laminates fabricated by Al sheets, peek films, and CFRP prepreg and reduce energy consumption during the preparation process to ensure the highest quality laminates, a novel forming process based on self-resistance electric (SRE) heating was proposed. Considering the tensile properties, fracture morphology, and void content comprehensively, the influence of current intensity (11.5, 12.5, 13.5 A) on the forming quality of laminates was explored. This optimized electric heating process was compared with the traditional heating process with respect to forming time, energy consumption, and the performance of the prepared samples. The results show that when the current is 12.5 A, the molding quality of the samples prepared by the SRE process is better than that of the traditional process.In addition, the SRE process significantly reduces forming times and saves energy. This SRE heating method provides a new process optimization pathway for the preparation and formation of fiber metal laminates and exhibits great prospects for future research.

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Nanostructured Co3O4-graced 3D carbon felts for improved mechanical interlocking in epoxy composites: morphological and mechanical/tribological optimization

Ali,

Taieh,

Hussein

et al. 2024

J Mater Sci

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Enhancing mechanical strength of carbon fiber-epoxy interface through electrowetting of fiber surface

Cited by 33 publications

References 53 publications

Constructing a Porous Structure on the Carbon Fiber Surface for Simultaneously Strengthening and Toughening the Interface of Composites

Constructing a Porous Structure on the Carbon Fiber Surface for Simultaneously Strengthening and Toughening the Interface of Composites

Self‐resistance heating forming and performance analysis of Al/PEEK/CFRP laminates

Nanostructured Co3O4-graced 3D carbon felts for improved mechanical interlocking in epoxy composites: morphological and mechanical/tribological optimization

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