Study of epoxy resin curing process by applying internal friction technique

Autor:	G. Haneczok, M. Kubisztal, A. Kubik, Artur Chrobak, J. Rasek
Rok vydání:	2009
Předmět:	Materials science Mechanical Engineering Epoxy Condensed Matter Physics Chemical reaction Isothermal process Vibration Mechanics of Materials Inflection point visual_art Torsion pendulum clock visual_art.visual_art_medium General Materials Science Time domain Composite material Curing (chemistry)
Zdroj:	Materials Science and Engineering: A. :283-286
ISSN:	0921-5093
DOI:	10.1016/j.msea.2008.09.127
Popis:	Curing process of an amine-epoxy system was investigated using vibrating reed technique and torsion pendulum apparatus, working at frequencies of about 100 Hz and 1 Hz, respectively. The measurements of mechanical spectra were carried out in isothermal conditions (300–325 K) at different frequencies in time domain i.e. in the course of chemical reaction between epoxy resin and a hardener. It was shown that the curing reaction is observed as an asymmetrical maximum of Q−1(t) which position is correlated with the inflection point of free vibrations frequency f(t) curve. An increase of the measurement temperature and frequency causes a shift of the observed mechanical spectra into shorter times.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::bf8bd440c40a3e5de14f171d3cdfa57b https://doi.org/10.1016/j.msea.2008.09.127 Zobrazit plný text záznamu Full Text from ScienceDirect