An investigation on the effect of polyvinyl butyral interlayer forms on the fracture toughness of glass reinforced phenolic laminates

Ipakchi, Hossein; Rezadoust, Amir Masoud; Esfandeh, Masoud; Rezaei, Mohammad Reza

doi:10.1016/j.tws.2020.106724

Cited by 14 publications

(4 citation statements)

References 51 publications

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“…A group of researchers conducted a detailed study on improving fracture toughness properties of interleaved glass–phenolic composites. − They used poly(vinyl butyral) in various forms (electrospun nanofibers, powder form, and solution form) and found that electrospun nanofiber interleaves gave the best improvements. The influence of curing procedures on these interleaved composites through autoclave/out of autoclave techniques was also examined.…”

Section: Effects Of Interleaving On Various Properties Of Fiber-reinf...mentioning

confidence: 99%

Interleaving in Composites for High-Performance Structural Applications

Sasidharan

Anand

2022

Ind. Eng. Chem. Res.

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Fiber-reinforced polymer composites find extensive applications ranging from sporting goods to aircraft components. Nonetheless, the weak interlaminar properties of laminated composites impose challenges in the design of primary load-bearing structures. The incorporation of additives (e.g., particles, films, and fibers) can overcome these limitations, offering additional functionalities to composites. Interleaving in composites generally refers to the incorporation of materials at the interface between two fiber plies so as to improve various properties. Being a simple technique to integrate in the production line, interleaving is recognized as an industrially significant and commercially viable method of modifying laminated composites. In this Review, an effort to assess state-of-the-art research on interleaving is attempted. Methods, applications, and the influence of interleaves on various properties of composites are also discussed. Data from the most recent research works on interleaved composites are compiled in an attempt to aid and encourage further developments among industries and academia.

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Section: Effects Of Interleaving On Various Properties Of Fiber-reinf...mentioning

confidence: 99%

Interleaving in Composites for High-Performance Structural Applications

Sasidharan

Anand

2022

Ind. Eng. Chem. Res.

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“…Intrinsic healing is achieved in composite materials using a polymer matrix that contains dynamic or reversible crosslinks which can reform across a crack. This can be achieved using a thermoplastic polymer that has shape memory properties such that the material can use diffusion to heal, typically under heat − or by relying on dynamic bonds within the thermoset polymer molecules that can be broken and reformed through specific chemical reactions. − Many investigations on thermoplastic polymers have employed poly(ethylene- co -methacylic acid) adhesive strips between the central layers of the laminates and presented very high healing efficiencies. − However, as reported by Wang et al, the improvement in fracture toughness was matched by a reduction in the shear properties of the laminate. Such challenges can be overcome through the use of thermoset polymers, and one widely studied self-healing polymer is an epoxy resin consisting of bisphenol-A diglycidyl ether (DGEBA) and 4-aminophenyl disulfide (4-AFD), which contains reversible disulfide bonds in the crosslinks formed by the 4-AFD molecules that connect the long polymer chains of DGEBA.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Interfacial Shear Strength Healing Efficiency between Dynamic Covalent Bond-Based Epoxy and Functionalized Fiberglass

Benazzo

Sodano

2022

ACS Appl. Polym. Mater.

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Extending the service life of light-weight composite materials used in structural applications has drawn extensive research interests in recent years. One promising solution is the incorporation of self-healing polymers as the matrix component to enable the intrinsic repair of structural damage, thus allowing the composite structure to maintain its mechanical performance and expand its useful life. One of the primary failure mechanisms in composites is interfacial failure, and this research seeks to develop a methodology that enables reformation of covalent crosslinks at the interface to recover material strength. The approach developed here focuses on the evaluation of interfacial shear strength (IFSS) of a composite material system consisting of a self-healing matrix formed by bisphenol-F diglycidyl ether mixed with 4-aminophenyl disulfide (4-AFD) and fiberglass. Interfacial damage is repaired through thermal stimulus that cleaves the dynamic covalent disulfide bonds in the 4-AFD constituent of the matrix followed by bond reformation to return material strength. The extent of interfacial healing was characterized through repeated microdroplet testing and was measured to be 61.7 and 39.7% for once-and twice-healed microdroplets, respectively, thus demonstrating the potential of the chosen composite system to not only exhibit matrix healing, as reported in most studies, on self-healing composites but also at the fiber−matrix interface. The surface chemistry of the glass fibers was modified through silane coupling agents 3-(glycidoxypropyl)trimethoxysilane and bis(triethoxysilylpropyl)tetrasulfide (Si-69) functionalization, and their subsequent effects on the IFSS and healing efficiency of the fiber−matrix system were investigated. The Si-69-functionalized fiberglass exhibited an enhancement in IFSS of 31.5% due to the improved fiber−matrix chemical interactions because of the increase in surface functional group concentrations. Therefore, this work demonstrates the interfacial healing potential of 4-AFD-based polymer matrices when incorporated in glass fiber composites and highlights the promising effects of surface functionalization for simultaneously improving IFSS and maintaining interfacial healing efficiency.

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“…[53][54][55] Also, the effect of reinforcements and nanomaterials additive on thermoplastic composites' strength and fracture toughness has been studied. [56][57][58][59] Fracture toughness study of thermoplastic composites in DCB and ENF by experimental and numerical methods and the study of the strain energy release rate in recent years has received particular attention. 60,61 In addition to mode I, the study of the fracture toughness of thermoplastic materials has been an essential issue in mode II.…”

Section: Introductionmentioning

confidence: 99%

Bone fixation implants with in-situ controllable stiffness: Modifying the R-curve behavior by 3D printing

Gazor

Hedayati

Mojtaba

2022

Journal of Composite Materials

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The difference in bone stiffness with the metallic bone fixation implants increases the risk of re-fracture due to osteoporosis in the implant area. In this study, a PLA-based bio-composite bone fixation implant with controllable stiffness capability was fabricated with a 3D printer, and crack growth in samples has been studied. The stiffness controllability was made possible by controlling the fiber and polymers fractions in the 3D printing process. A logical relationship was observed between Vf, critical load, and strain energy release rate. Therefore, it can be expected that the fracture toughness can be estimated in thermoplastic bio-composites bone fixation based on the Vf.

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An investigation on the effect of polyvinyl butyral interlayer forms on the fracture toughness of glass reinforced phenolic laminates

Cited by 14 publications

References 51 publications

Interleaving in Composites for High-Performance Structural Applications

Interleaving in Composites for High-Performance Structural Applications

Evaluation of Interfacial Shear Strength Healing Efficiency between Dynamic Covalent Bond-Based Epoxy and Functionalized Fiberglass

Bone fixation implants with in-situ controllable stiffness: Modifying the R-curve behavior by 3D printing

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