Curing effects on viscosity and mechanical properties of a commercial epoxy resin adhesive

Quantitative Analysis of Curing Mechanisms of Epoxy Resin by Mid- and Near- Fourier Transform Infra Red Spectroscopy

“…Overall kinetics of the reaction involves varying concentration of four species: Oxirane ring, primary, secondary, and tertiary amine. Therefore, monitoring of crosslinking progress is done by observation of concentration of these four species either by using IR spectroscopy 5,14 as made possible because of polarities of these species 5,14 or by differential scanning calorimetry (DSC) [15][16][17][18] which monitors heat flux. In recent years, the former technique is increasingly being used because of its high accuracy and ease of performance.…”

A qualitative, process-parameter-based model for the release agent transfer during CFRP-part production: an approach to increase the initial bondability

“…Within this theory, the viscosity is determined by the volume of the resin, which is not occupied by the atoms of the polymer chains [38]. During the crosslinking reaction, the polymer chain is more and more enlarged, and therefore the free volume is reduced, which increases the viscosity [39] due to a reduced mobility of the molecules [40]. Unfortunately, there are no investigations which directly deal with the influence of an additional pressure on the viscosity of an epoxy resin, but in theory, there is an increase of the viscosity, due to an applied pressure [37].…”

Morphological and Thermal Properties of Cellulose Nanofibrils Reinforced Epoxy Nanocomposites

“…The curing of epoxy resins generally is an exothermic reaction, which causes the temperature of the process to increase (Petrie, 2006). Epoxies are used extensively in many applications to bond the substrates of different materials (Lapique and Redford, 2002). In recent years, it has been shown that the addition of nanoparticles and nanofi brils to adhesives is an economical and environmentally friendly way to improve the various properties of a polymer.…”