Chromatographic monitoring of the residual concentrations of volatile hydrocarbon components in a cured epoxy adhesive

2016 ◽  
Vol 26 (5) ◽  
pp. 455-456
Author(s):  
Yurii N. Zhitnev ◽  
Boris S. Lunin ◽  
Evgeniya A. Tveritinova ◽  
Valerii A. Kreisberg
Keyword(s):  
Epoxy Adhesive ◽  
Volatile Hydrocarbon ◽  
Chromatographic Monitoring

Effect of reduced graphene oxide on mechanical behavior of an epoxy adhesive in glassy and rubbery states

2021 ◽  
pp. 002199832110316
Author(s):  
Ata Khabaz-Aghdam ◽  
Bashir Behjat ◽  
EAS Marques ◽  
RJC Carbas ◽  
Lucas FM da Silva ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Ambient Temperature ◽  
Mechanical Behavior ◽  
Reduced Graphene Oxide ◽  
Epoxy Adhesive ◽  
Ultimate Strain ◽  
Reduced Graphene

The mechanical behavior of an adhesive, in neat state and reinforced with up to 0.5 wt% of reduced graphene oxide (RGO) was investigated here. Tests were done at temperatures between the ambient temperature and the glass transition temperature ( Tg[Formula: see text] of the adhesive. Using a metal mold, cured plates of the neat and RGO reinforced epoxy adhesive were prepared. The adhesive powder and the bulk dumbbell-shaped specimens, obtained from cured adhesive plates, were subjected to differential scanning calorimetry (DSC) and tensile tests, respectively, to obtain the Tg as well as mechanical properties of the adhesives. The results indicated that adding RGO up to 0.5 wt% increased the glass transition temperature, the modulus of elasticity, and the strength of the adhesive. It was found that the presence of RGO reduced the adhesive’s strain at the break at the ambient temperature. However, at high temperatures, near the Tg, the ultimate strain of RGO-reinforced adhesives decreased slightly when compared to the ultimate strain of the neat specimens. This explains the reduction in toughness at ambient temperature obtained by adding RGO and the increase at high temperatures. Finally, the failure morphology of the neat and RGO-reinforced adhesive specimens was investigated using microscopic imaging of the specimens’ failure cross-sections, which supported and justified the experimental observations.

Fatigue behavior of adhesively bonded glass fiber reinforced plastic composites with different overlap lengths

2015 ◽  
Vol 229 (7) ◽  
pp. 1292-1299
Author(s):  
E Kara ◽  
A Kurşun ◽  
MR Haboğlu ◽  
HM Enginsoy ◽  
H Aykul
Keyword(s):  
Glass Fiber ◽  
Fatigue Behavior ◽  
Laminated Composite ◽  
Element Model ◽  
Treatment Method ◽  
Epoxy Adhesive ◽  
Lap Joints ◽  
Adhesively Bonded ◽  
Glass Fiber Reinforced Plastic ◽  
Glass Fiber Reinforced

The joining techniques of lightweight and strong materials in the transport industry (e.g. automotive, aerospace, shipbuilding industries) are very important for the safety of the entire structure. In these industries, when compared with other joining methods, the use of adhesively bonded joints presents unique properties such as greater strength, design flexibility, and reduction in fuel consumption, all thanks to low weight. The aim of this study was the analysis of the tensile fatigue behavior of adhesively bonded glass fiber/epoxy laminated composite single-lap joints with three different specimen types including 30, 40 and 50 mm overlap lengths. In this study, composite adherents were manufactured via vacuum-assisted resin transfer molding and were bonded using Loctite 9461 A&B toughened epoxy adhesive. The effect of a surface treatment method on the bonding strength was considered and it led to an increment of about 40%. A numerical analysis based on a finite element model was performed to predict fatigue life curve, and the predicted results showed good agreement with the experimental investigation.

Evaluation of a structural epoxy adhesive for timber-glass bonds under shear loading and different environmental conditions

2019 ◽  
Vol 95 ◽  
pp. 102425 ◽  
Author(s):  
Žiga Unuk ◽  
Andrej Ivanič ◽  
Vesna Žegarac Leskovar ◽  
Miroslav Premrov ◽  
Samo Lubej
Keyword(s):  
Environmental Conditions ◽  
Epoxy Adhesive ◽  
Shear Loading

Mixed-mode fatigue behavior of degraded toughened epoxy adhesive joints

2011 ◽  
Vol 31 (2) ◽  
pp. 88-96 ◽  
Author(s):  
N.V. Datla ◽  
J. Ulicny ◽  
B. Carlson ◽  
M. Papini ◽  
J.K. Spelt
Keyword(s):  
Mixed Mode ◽  
Fatigue Behavior ◽  
Epoxy Adhesive ◽  
Adhesive Joints ◽  
Toughened Epoxy

Design and development of novel reactive amine nanocontainers for a self-healing epoxy adhesive: self-repairing investigation using the lap shear test

RSC Advances ◽  
2015 ◽  
Vol 5 (27) ◽  
pp. 21023-21032 ◽  
Author(s):  
Sepideh Khoee ◽  
Zahra Kachoei
Keyword(s):  
Fracture Toughness ◽  
Shear Test ◽  
Epoxy Adhesive ◽  
Self Healing ◽  
Design And Development ◽  
Lap Shear ◽  
Lap Shear Test ◽  
P Recovery

Recovery of fracture toughness of a self-healing epoxy adhesive is achieved by using a novel amine nanocontainer.

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