Naslov
Effect of the Filler on The Curing Kinetics of an Unsaturated Polyester Resin

Autori
Ivanković, Marica ; Mencer, Helena Jasna

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
7th European Polymer Federation Symposium on Polymeric Materials: Polymers Friendly for the Environment: Book of Summaries / - Szczecin : Wydawnictwo Uczelniane Politechniki Szczecińskiej, 1998

Skup
7th European Polymer Federation Symposium on Polymeric Materials: Polymers Friendly for the Environment

Mjesto i datum
Szczecin, Poljska, 20.09.1998. - 24.09.1998

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Sažetak
The effects of the filler (calcium carbonate) on the curing kinetics of an unsaturated polyester resin were studied by differential scanning calorimetry (DSC). Methyl ethyl ketone peroxide (MEKP) was used as initiator. DSC experiments were performed both in dynamic conditions at different heating rates and in isothermal conditions at different temperatures ranging from 100 to 120oC. For all the systems investigated, a second (dynamic) scan on the isothermally cured samples indicated that the curing reaction was completed at any of the temperatures applied. In general, the addition of the filler results in an increase of the cure reaction time. At a constant heating rate the reaction is characterized by lower onset temperature and lower reaction rate with respect to the neat resin. An autocatalytic kinetic model was applied to isothermal DSC data. The rate constants have the usual Arrhenius form and the activation energy values, Ea, are in agreement with those tabulated in the literature. For the systems containing the filler higher values of Ea were obtained in comparison with the neat resin. The kinetic model with parameters determined from isothermal DSC data was successfully applied to dynamic DSC data over a broad temperature range that covers usual processing conditions.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

POVEZANOST RADA