Effect of polymer nanoparticle morphology on fracture toughness enhancement of carbon fiber reinforced epoxy composites

Ning, Na; Wang, Ming; Zhou, Gang; Qiu, Yiping; Wei, Yi

doi:10.1016/j.compositesb.2022.109749

Cited by 71 publications

(30 citation statements)

References 41 publications

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“…This improvement, which is disruptive to literature, is attributed to fiber‐matrix enhancement through the synergetic effect of CNC and CNT/GNP, owing to CNC's oxygen‐containing functional groups for better chemical bonding (formation of covalent bonding between OH and half ester sulfate groups of CNC and the defected sites of CNT/GNP during the ultrasonic treatment [ 57 ] ) and CNT/GNP's stiff wrinkle structures for mechanical interlocking leading to strong particle–matrix and matrix–fiber interfaces. [ 63 ] According to the interfacial shear strength (IFSS) results in Figure S3 (Supporting Information), ring‐patterned CNC‐CNT (10:1 ratio) enhances IFSS by 75% compared to that of neat composite, which confirms the fiber‐matrix enhancement. More detailed micrographs and the corresponding details on the flexural stress‐strain curves are brought in Figure S6 (Supporting Information) and the interfacial properties of neat, ring, and disk CNC‐CNT/GNP sprayed CFRPs represented by IFSS are shown in Figure S3 (Supporting Information).…”

Section: Resultsmentioning

confidence: 78%

Multifunctionality through Embedding Patterned Nanostructures in High‐Performance Composites

et al. 2023

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Despite being a pillar of high‐performance materials in industry, manufacturing carbon fiber composites with simultaneously enhanced multifunctionality and structural properties has remained elusive due to the lack of practical bottom‐up approaches with control over nanoscale interactions. Guided by the droplet's internal currents and amphiphilicity of nanomaterials, herein, a programmable spray coating is introduced for the deposition of multiple nanomaterials with tailorable patterns in composite. It is shown that such patterns regulate the formation of interfaces, damage containment, and electrical‐thermal conductivity of the composites, which is absent in conventional manufacturing that primarily rely on incorporating nanomaterials to achieve specific functionalities. Molecular dynamics simulations show that increasing the hydrophilicity of the hybrid nanomaterials, which is synchronous with shifting patterns from disk to ring, improves the interactions between the carbon surfaces and epoxy at the interfaces,manifested in enhanced interlaminar and flexural performance. Transitioning from ring to disk creates a larger interconnected network leading to improved thermal and electrical properties without penalty in mechanical properties. This novel approach introduces a new design , where the mechanical and multifunctional performance is controlled by the shape of the deposited patterns, thus eliminating the trade‐off between properties that are considered paradoxical in today's manufacturing of hierarchical composites.

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Section: Resultsmentioning

confidence: 78%

Multifunctionality through Embedding Patterned Nanostructures in High‐Performance Composites

et al. 2023

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“…Polymers are widely used in many industrial fields, including the aerospace, automobile, semiconductor, and biomedical fields because they are light weight, easy to process, have low production costs, good mechanical properties, and chemical resistance [ 1 , 2 , 3 , 4 ]. Depending on their degree of crystallinity, polymers are classified as an amorphous polymer, a semi-crystalline polymer, or a crystalline polymer.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Structure and the Thermal Conductivity of Semi-Crystalline Polyetheretherketone/Boron Nitride Sheet Composites Using All-Atom Molecular Dynamics Simulation

Bae

Kim

et al. 2023

Polymers

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Thermal transport simulations were performed to investigate the important factors affecting the thermal conductivity based on the structure of semi-crystalline polyetheretherketone (PEEK), and the addition of boron nitride (BN) sheets. The molecular-level structural analysis facilitated the prediction of the thermal conductivity of the optimal structure of PEEK reflecting the best parameter value of the length of amorphous chains, and the ratio of linkage conformations, such as loops, tails, and bridges. It was found that the long heat transfer paths of polymer chains were induced by the addition of BN sheets, which led to the improvement of the thermal conductivities of the PEEK/BN composites. In addition, the convergence of the thermal conductivities of the PEEK/BN composites in relation to BN sheet size was verified by the disconnection of the heat transfer path due to aggregation of the BN sheets.

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“…Interlaminar fracture toughness (IFT) is often used to characterize the resistance of materials to delamination. For this reason, researchers have investigated many methods to improve the IFT of composites, such as resin modification, [3][4][5] Z-directional toughening, [6][7][8] and interlaminar toughening. [9][10][11][12] Among them, the interlaminar toughening technique is a targeted and straightforward method to improve the IFT of composites.…”

Section: Introductionmentioning

confidence: 99%

Simultaneously improve the mode II interlaminar fracture toughness, flexural properties, and impact strength of CFRP composites with short aramid fiber interlaminar toughening

Wang

Liu

Chen³

et al. 2022

Polymer Composites

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This work mainly focuses on the mode II interlaminar fracture behavior of carbon fiber composite that was interlaminar toughened by short aramid fiber modified epoxy resin. The short fibers were first dispersed in the epoxy matrix and then in the laminate interlayer area during the lamination process. The ENF test evaluated the Mode II interlaminar fracture toughness of laminates.The results show that mode II interlaminar fracture toughness increases with the addition of short fibers. When the fiber content is 10 g/m 2 , the toughening effect is the best at 2437.72 J/m 2 , which is about 61.8% higher than the untoughened sample. The toughening mechanism of CFRP laminates by adding short fibers was observed by mode II fracture surface SEM images. In addition, flexural properties and Charpy impact properties of short fiber modified resin interlayer toughened laminates were also studied. The results showed that with this method, flexural properties and impact strength were improved to a certain extent, proving that this method is an effective interlaminar toughening method.

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Effect of polymer nanoparticle morphology on fracture toughness enhancement of carbon fiber reinforced epoxy composites

Cited by 71 publications

References 41 publications

Multifunctionality through Embedding Patterned Nanostructures in High‐Performance Composites

Multifunctionality through Embedding Patterned Nanostructures in High‐Performance Composites

Analysis of the Structure and the Thermal Conductivity of Semi-Crystalline Polyetheretherketone/Boron Nitride Sheet Composites Using All-Atom Molecular Dynamics Simulation

Simultaneously improve the mode II interlaminar fracture toughness, flexural properties, and impact strength of CFRP composites with short aramid fiber interlaminar toughening

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