The cure kinetics of epoxy adhesive containing 5 wt% of an industrial LTA type zeolite were investigated using dynamic differential scanning calorimetry (DSC) analysis. Cure kinetic models for both epoxy and epoxy–zeolite systems were developed using a two parameter (m, n) autocatalytic model (Sestak-Berggren equation). Models data fitted experimental data with a good agreement. The zeolite addition accelerated the cure rate due to the hydroxyl group on its surface. Zeolite dispersion and therefore an evaluation of efficiency of mixing process were determined by Thermogravimetric Analysis (TGA). Adhesive mechanical properties with and without zeolite were evaluated. The addition of 0.5 wt% of LTA type zeolite in epoxy adhesive increased by 11% its ultimate strength value and by 50% its elastic module, with a value of 4.46±0.29 GPa.
Effect of commercial LTA type zeolite inclusion in properties of structural epoxy adhesive / Candamano, S; Frontera, Patrizia; Macario, A; Crea, F. - In: ADVANCED SCIENCE LETTERS. - ISSN 1936-6612. - 23:6(2017), pp. 5927-5930. [10.1166/asl.2017.9071]
Effect of commercial LTA type zeolite inclusion in properties of structural epoxy adhesive
FRONTERA, Patrizia;
2017-01-01
Abstract
The cure kinetics of epoxy adhesive containing 5 wt% of an industrial LTA type zeolite were investigated using dynamic differential scanning calorimetry (DSC) analysis. Cure kinetic models for both epoxy and epoxy–zeolite systems were developed using a two parameter (m, n) autocatalytic model (Sestak-Berggren equation). Models data fitted experimental data with a good agreement. The zeolite addition accelerated the cure rate due to the hydroxyl group on its surface. Zeolite dispersion and therefore an evaluation of efficiency of mixing process were determined by Thermogravimetric Analysis (TGA). Adhesive mechanical properties with and without zeolite were evaluated. The addition of 0.5 wt% of LTA type zeolite in epoxy adhesive increased by 11% its ultimate strength value and by 50% its elastic module, with a value of 4.46±0.29 GPa.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
