Design, Preparation and Characterization of a High-Performance Epoxy Adhesive with Poly (Butylacrylate-block-styrene) Block Copolymer and Zirconia Nano Particles in Aluminum- Aluminum Bonded Joints

Nikkhah Varkani, Mojtaba; Moini Jazani, Omid; Sohrabian, Majid; Torabpour Esfahani, Amir; Fallahi, Mohsen

doi:10.1007/s10904-023-02790-x

Cited by 5 publications

(2 citation statements)

References 72 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The shear strength rose by increasing the copolymer content up to 2.5 phr; such that the shear strength reached 10.4 MPa by adding 2.5 phr copolymer, showing 21% increment compared with the matrix. The reason can be the proper distribution of the block copolymer, the proper interaction of the copolymer with the epoxy, and the increase in the adhesion strength of the adhesive to the substrate 43 . The shear strength decreased by further increment of the copolymer, due to the aggregation and decreased interaction.…”

Section: Resultsmentioning

confidence: 99%

“…The reason can be the proper distribution of the block copolymer, the proper interaction of the copolymer with the epoxy, and the increase in the adhesion strength of the adhesive to the substrate. 43 The shear strength decreased by further increment of the copolymer, due to the aggregation and decreased interaction. The incorporation of nanoparticles to epoxy adhesive from one hand enhanced the adhesion between the adhesive components by creating interactions between nanoparticles and epoxy groups and incremented the adhesion of the adhesive to the substrate by increasing the interactions between the adhesive and the aluminum substrate, which had an active surface, from the other hand.…”

Section: Lap Shear Strength Of Epoxy Adhesivesmentioning

confidence: 99%

See 1 more Smart Citation

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

Self Cite

View full text Add to dashboard Cite

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.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Lap Shear Strength Of Epoxy Adhesivesmentioning

confidence: 99%

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

Self Cite

View full text Add to dashboard Cite

show abstract

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

View full text Add to dashboard Cite

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.

show abstract

Molecular dynamics study on mechanical properties of polycaprolactone/bioactive glass nanocomposites

Sohrabian,

Vaseghi,

Ranjbar Eslamloo

et al. 2024

Computational Materials Science

View full text Add to dashboard Cite

Design, Preparation and Characterization of a High-Performance Epoxy Adhesive with Poly (Butylacrylate-block-styrene) Block Copolymer and Zirconia Nano Particles in Aluminum- Aluminum Bonded Joints

Cited by 5 publications

References 72 publications

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

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

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

Molecular dynamics study on mechanical properties of polycaprolactone/bioactive glass nanocomposites

Contact Info

Product

Resources

About