Open AccessTHERMAL STABILITY AND DAMPING PROPERTIES OF POLYURETHANE HYBRID MATERIAL BASED ON CASTOR OIL
Author(s) -
Jaroslava Budinski Simendić,
Zoran Bjelović,
Suzana SamaržijaJovanović,
Vојislаv Аlеksić,
Helena Valentová,
Katalin Meszaros Szecseny,
Ivan Krakovský
Publication year - 2014
Publication title -
contemporary materials
Language(s) - English
Resource type - Journals
eISSN - 1986-8677
pISSN - 1986-8669
DOI - 10.7251/comen1401064s
Subject(s) - castor oil , isophorone diisocyanate , materials science , polyurethane , thermal stability , glass transition , polyol , composite material , dynamic mechanical analysis , elastomer , chemical engineering , polymer , organic chemistry , chemistry , engineering
This study reports the fabrication of environmentally friendly polyurethane materials using either 2,4-toluene diisocyanate or isophorone diisocyanate, castor oil as a polyol component, and TiO2 nanoparticles. Samples were prepared with stoichiometric balance of reactive groups. Dynamic viscoelastic properties of prepared samples were studied. The ratio of the loss component to the storage component (tanδ) was used as a measure of the material damping properties. The glass transition temperature was determined as a position of the tanδ curve maximum. The temperature range with tanδ > 0.3 was used to evaluate damping capacity of elastomers. Thermal stability of prepared samples was estimated by TGA method. It was assessed that PU based on aliphatic diisocyanate have higher thermal stability. Obtained values of the glass transition temperature and the starting degradation temperature are important for the application window of novel materials.