scholarly journals Cure Kinetics of Samarium-doped Fe3O4/Epoxy Nanocomposites

2021 ◽  
Author(s):  
Maryam Jouyandeh ◽  
Mohammad Reza Ganjali ◽  
Mehdi Mehrpooya ◽  
Otman Abida ◽  
Karam Jabbour ◽  
...  
Keyword(s):  
Electrochemical Method ◽  
Magnetic Particles ◽  
Cure Kinetics ◽  
Oh Groups ◽  
Model Free ◽  
Epoxy Amine ◽  
Amine System ◽  
Amine Groups ◽  
Curing Agents ◽  
Kinetics Of

There was a question on “how lanthanides doping in iron oxide affects cure kinetics of epoxy-based nanocomposites?” To answer, we synthesized samarium (Sm)-doped Fe3O4 nanoparticles via electrochemical method and characterized it using FTIR, XRD, FE-SEM, EDX, TEM, and XPS analyses. The magnetic particles were uniformly dispersed in epoxy resin to increase the curability of the epoxy/amine system. The effect of the lanthanide dopant on the curing reaction of epoxy with amine was explored by modeling DSC experimental data based on model-free methodology. It was found that Sm3+ in the structure of Fe3O4 crystal participates in cross-linking of epoxy by catalyzing the reaction between epoxide rings and amine groups of curing agents. In addition, the etherification reaction of active OH groups on the surface of nanoparticles reacts with epoxy rings which prolongs the reaction time at the late stage of reaction where diffusion is the dominant mechanism.

Anomalies between Microwave and Thermal Cure Kinetics of Epoxy-Amine Resin Systems

1999 ◽  
Vol 11 (1) ◽  
pp. 27-39 ◽  
Author(s):  
D G Rogers ◽  
E Marand ◽  
D J T Hill ◽  
G A George
Keyword(s):  
Cure Kinetics ◽  
Thermal Cure ◽  
Epoxy Amine ◽  
Kinetics Of

Cure kinetics of several epoxy–amine systems at ambient and high temperatures

2014 ◽  
Vol 11 (2) ◽  
pp. 143-157 ◽  
Author(s):  
Monoj Pramanik ◽  
Eric W. Fowler ◽  
James W. Rawlins
Keyword(s):  
High Temperatures ◽  
Cure Kinetics ◽  
Epoxy Amine ◽  
Kinetics Of

Comparison of model-free kinetic methods for modeling the cure kinetics of commercial phenol–formaldehyde resins

2005 ◽  
Vol 439 (1-2) ◽  
pp. 68-73 ◽  
Author(s):  
Jinwu Wang ◽  
Marie-Pierre G. Laborie ◽  
Michael P. Wolcott
Keyword(s):  
Phenol Formaldehyde ◽  
Cure Kinetics ◽  
Kinetic Methods ◽  
Model Free ◽  
Kinetics Of

Kinetics modeling of the reaction for an Epoxy/PMMA/MMT ternary system

e-Polymers ◽  
2007 ◽  
Vol 7 (1) ◽  
Author(s):  
Marcelo Hernandez ◽  
Jérôme Dupuy ◽  
Jannick Duchet ◽  
Henry Sautereau
Keyword(s):  
Differential Scanning Calorimetry ◽  
Ternary System ◽  
Catalytic Effect ◽  
Dilution Effect ◽  
Cure Kinetics ◽  
Scanning Calorimetry ◽  
Epoxy Amine ◽  
Cloisite 30B ◽  
Kinetics Of ◽  
Good Agreement

Abstract The effect of thermoplastic PMMA and clay Cloisite 30B addition on the cure kinetics of an epoxy/amine thermosetting system was investigated using differential scanning calorimetry (DSC) and modelled using a single kinetic model. For obtaining a good agreement between the experimental results and theoretical modeling, it was necessary to separate the ternary system in two formulations: matrix/PMMA and matrix/clay systems. It appeared that the addition of PMMA delays the reaction up to the phase separation phenomenon due to a dilution effect of the reactive species. In opposition, the presence of clays accelerates the reaction (probably due to a catalytic effect of some metals ions introduced with the clay) but it has no sensitive effect on the cloud point conversion in the presence of PMMA. The modeling results are in good agreement with those experimentally obtained.

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