Toughening effect of nanocomposite-wall microcapsules on the fracture behavior of epoxy

Shokrian, Minoo Dokht; Shelesh‐Nezhad, Karim; Najjar, Reza

doi:10.1016/j.polymer.2019.02.027

Cited by 19 publications

(6 citation statements)

References 26 publications

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“…2a showed the FTIR spectra of EVA-g-MAH, pure epoxy resin and R-EMs. As exhibited in the results, the characteristic adsorption peaks observed at 2924 cm À1 and 1733 cm À1 were assigned to the stretching vibrations of C-H and C]O groups on EVA-g-MAH, [31][32][33] respectively. In addition, the intensity of adsorption peaks of C-H and C]O in the blends were gradually increased with the increase of the content of EVA-g-MAH content, illustrating the good compatibility between EP matrix and EVA-g-MAH.…”

Section: Preparation and Characterization Of R-emmentioning

confidence: 62%

Preparation of environment-friendly solid epoxy resin with high-toughnessviaone-step banburying

Lou

Qian

et al. 2022

RSC Adv.

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Section: Preparation and Characterization Of R-emmentioning

confidence: 62%

Preparation of environment-friendly solid epoxy resin with high-toughnessviaone-step banburying

Lou

Qian

et al. 2022

RSC Adv.

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“…Shokrian et al synthesised different types of microcapsules comprising hollow, filled and composite wall microcapsules. The presence of capsules in epoxy resin developed crack tailing, plastic deformation and toughened the epoxy [11].…”

Section: Introductionmentioning

confidence: 99%

The effect of vascular self-healing pattern on mechanical behaviour and healing performance of epoxy/glass composite

Adli

Shelesh‐Nezhad

azar

et al. 2019

Plastics, Rubber and Composites

Self Cite

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In this research, the effect of vascular self-healing configuration on the healing behaviour of epoxy/glass (50/50) composite has been experimentally studied. Hollow glass fibres (HGFs) of 450 ± 10 μm diameter and 30-35% hollowness were produced by using an extruder. The hollow glass fibres were filled with healing components and subsequently employed as vascular healing system in the composite laminate. The orientations of embedded HGFs were selected at three levels of 0, 45 and 90°, and the distances of HGFs were chosen at three levels of 200, 500 and 800 μm in composites. A damage at tensile strain of 1.2% initiated, and following, the self-healing process took place. The virgin and healed specimens were characterised in terms of tensile behaviour, and subsequently, the healing performance was obtained. In addition, the formation of micro-cracks, fracture of filled HGFs and morphology of healed zones in self-healing composites were analysed by employing SEM.

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“…Many researchers have reported the modification of microcapsules with nanomaterials and the effects of such modification, as summarized in Table 1. In recent years, nanomaterials have been increasingly applied to modify microcapsules in cement-based materials, and researchers have highlighted that nanomaterials must be selected by considering the purpose and feasibility of modification [15,18,30,32].…”

Section: Nanomaterialsmentioning

confidence: 99%

“…Dry et al [13] devised a built-in capsule for cement-based materials and found that, for efficient healing, microcapsule shells must exhibit sufficient mechanical strength to resist internal forces of concrete or external forces generated by concrete mixing [14]. Nanomaterials were also used to enhance the mechanical properties of conventional microcapsules [15]. Nanomaterial-modified (nanomodified) microcapsules with enhanced strengths can be applied to cement-based materials to improve their durability.…”

Section: Introductionmentioning

confidence: 99%

Status of Research on the Use of Nanomodified Microcapsules in Cement-Based Materials

Xie,

Zhang,

et al. 2024

Processes

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Microcapsules have received considerable attention owing to their excellent self-healing properties, and many researchers have attempted to modify their microcapsules’ characteristics to meet the requirements of various applications. Owing to their excellent physical and chemical properties, nanomaterial-modified (nanomodified) microcapsules can be used to protect surface coatings and internal structures of cement-based materials. This paper summarizes the progress in theoretical research and practical application of nanomodified microcapsules in coatings and cement-based materials, focusing on preparation processes and performance enhancements. The advantages and necessity of using nanomaterials are highlighted by clarifying the effects of nanomodified microcapsules on the performances of coatings and cement-based materials. In addition, the bottlenecks in the application of nanomodified microcapsules to coatings and cement-based materials are comprehensively examined, and the challenges and future development directions are specified. This review provides technical guidance for the preparation of smart nanomodified microcapsules and novel ideas for enhancing the functionality of protective coatings and the durability and safety of cement-based materials.

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Toughening effect of nanocomposite-wall microcapsules on the fracture behavior of epoxy

Cited by 19 publications

References 26 publications

Preparation of environment-friendly solid epoxy resin with high-toughnessviaone-step banburying

Preparation of environment-friendly solid epoxy resin with high-toughnessviaone-step banburying

The effect of vascular self-healing pattern on mechanical behaviour and healing performance of epoxy/glass composite

Status of Research on the Use of Nanomodified Microcapsules in Cement-Based Materials

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