Design and characterization of a novel supported epoxy film adhesive reinforced by Ti3C2Tx MXene nanoparticles

Hajizamani, Elham; Moini Jazani, Omid; Riazi, Hossein

doi:10.1016/j.matchemphys.2023.128270

Materials Chemistry and Physics

2023

DOI: 10.1016/j.matchemphys.2023.128270

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Design and characterization of a novel supported epoxy film adhesive reinforced by Ti3C2Tx MXene nanoparticles

Elham Hajizamani,

Omid Moini Jazani,

Hossein Riazi

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2024

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Cited by 6 publications

References 40 publications

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Manipulating a novel epoxy‐based composite with core–shell rubber particles for designing a structural adhesive in aluminum–aluminum bonded joints

Aliakbari,

Moini Jazani,

Moghadam

et al. 2024

Polymers for Advanced Techs

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Epoxy adhesives become very brittle after curing due to their high‐crosslinking degree. For increasing the toughness of epoxy adhesives, the addition of different toughening agents has been proposed. In this study the diglycidyl ether of bisphenol A (DGEBA)/dicyandiamide epoxy network has been modified by adding an emulsion latex containing core–shell rubber particles (CSPs) prepared by means of seeded emulsion polymerization. The CSPs consist of poly (butyl acrylate) (PBA) as core and methyl methacrylate (MMA) copolymerized with glycidyl methacrylate (GMA) as shell. The effects of adding various amounts of the emulsion latex on the mechanical properties, thermal stability, adhesion, and microstructure of the cured epoxy resin were investigated. The CSPs were analyzed by transmission electron microscopy (TEM), Fourier‐transform infrared spectroscopy (FTIR), and differential scanning calorimetry (DSC). The mechanical properties, thermal stability, adhesion to aluminum plates, and microstructure of the cured epoxy resin were investigated by stress–strain, thermal gravimetric analysis (TGA), single lap shear test, and field emission scanning electron microscopy (FESEM), respectively. The addition of 7 wt.% emulsion latex to epoxy enhanced the tensile strength and the toughness of the dumbbell‐shaped samples by 421% and 4388% with respect to neat epoxy, respectively. Furthermore, the single lap shear strength increased in 33% and an increase of 71°C in the initial decomposition temperature of the epoxy was obtained by adding 7 wt.% CSP, without affecting the maximum decomposition temperature. The FESEM micrographs of the fractured surfaces indicated that the major toughening mechanisms were CSP de‐bonding, plastic void growth, and shear bond yielding.

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Manipulating a novel epoxy‐based composite with core–shell rubber particles for designing a structural adhesive in aluminum–aluminum bonded joints

Aliakbari,

Moini Jazani,

Moghadam

et al. 2024

Polymers for Advanced Techs

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A new platform for designing high‐performance epoxy film adhesive with poly (butyl acrylate‐block‐styrene) block copolymer and alumina nano particles in aluminum–aluminum bonded joints: Preparation and analysis of the mechanical, adhesion, and thermal properties

Ghaderi,

Semnani,

Moini Jazani

2024

Polymer Composites

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Epoxy film adhesives are typically used in different industries. However, these adhesives suffer from brittleness, low flexibility, and thermal stability problems. In this research, phenolic resin (Novolac) and poly (butyl acrylate‐block‐styrene) were used in the formulation of epoxy film adhesive (Diglycidyl ether bisphenol A) to increase thermal stability and adhesion strength and as the toughening agent, respectively. Alumina nanoparticles were also employed to enhance the mechanical properties. The influence of block copolymer and alumina nano particles was also assessed on the mechanical and thermal properties of epoxy‐based film adhesives. The investigation of the mechanical properties of dumbbell‐shaped samples and adhesion strength of the Al‐Al bonded joints were evaluated by tensile, lap shear, and T‐peel tests. The thermal stability of the optimal samples was assessed by thermogravimetry analysis (TGA). SEM analysis was also utilized to study the toughening mechanism. Tensile test of the dumbbell‐shaped samples indicated that the incorporation of 2.5 phr block copolymer and 2 phr alumina nanoparticles enhanced the toughness to 250%. The shear and peel strengths of this sample also exhibited 51% and 76% increase, respectively, showing a remarkable synergistic effect. On the other hand, TGA results revealed that the incorporation of block copolymer improved the thermal stability of the adhesive matrix. The copresence of these two materials also showed a considerable synergistic effect on the thermal stability. The SEM results were also in line with the results of mechanical tests as the crack deviation, crack pinning, and debonding were the most important mechanisms of toughening.Highlights A new platform was developed for designing epoxy films adhesives with high mechanical, adhesion, and thermal properties. The hybrid of butyl acrylate block styrene copolymer, phenolic resin, and alumina nanoparticles showed synergistic effects on the lap shear and T‐peel strength. The greatest improvement in toughness was related to the epoxy adhesive containing 2.5 phr block copolymer and 2 phr alumina nanoparticles. Analysis of the fracture surface showed that by using hybrid of nanoparticles and block copolymers in the epoxy film adhesive formulation, the cohesive failure occurred. The use of hybrid additives in film adhesive formulations enlightened manufacture of adhesives for future studies on adhesive formulations.

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Cryogenic mechanical properties and liquid oxygen compatibility of MXene/epoxy nanocomposites

Qu,

Guo,

Hou

et al. 2024

Adv Compos Hybrid Mater

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Design and characterization of a novel supported epoxy film adhesive reinforced by Ti3C2Tx MXene nanoparticles

Cited by 6 publications

References 40 publications

Manipulating a novel epoxy‐based composite with core–shell rubber particles for designing a structural adhesive in aluminum–aluminum bonded joints

Manipulating a novel epoxy‐based composite with core–shell rubber particles for designing a structural adhesive in aluminum–aluminum bonded joints

A new platform for designing high‐performance epoxy film adhesive with poly (butyl acrylate‐block‐styrene) block copolymer and alumina nano particles in aluminum–aluminum bonded joints: Preparation and analysis of the mechanical, adhesion, and thermal properties

Cryogenic mechanical properties and liquid oxygen compatibility of MXene/epoxy nanocomposites

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