Naslov
Priprava i karakterizacija fenolformaldehidnih smola modificiranih dodatkom epoksida i p-krezola
(Synthesis and Characterization of Phenolic Resins Modified by the Addition of Epoxy and p-cresol)

Autori
Rogošić, Marko ; Matusinović, Zvonimir ; Gršković, Petar

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Polimerni materijali i dodaci polimerima, Zbornik proširenih sažetaka / Rujnić Sokele, Maja - Zagreb : Drušvo za plastiku i gumu, Zagreb, 2002, 66-74

Skup
Polimerni materijali i dodaci polimerima

Mjesto i datum
Zagreb, Hrvatska, 14.11.2002. - 15.11.2002

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Domaća recenzija

Ključne riječi
fenol-formaldehidne smole; epoksid; p-krezol; fleksibilnost; diferencijalna pretražna kalorimetrija
(phenolic resins; epoxy; p-cresol; flexibility; differential scanning calorimetry)

Sažetak
An introductory investigation of potentially flexible phenolic resins is described in this paper. Modified resole resins were synthesised: epoxy additive diglycidylether of butandiol (DGEBD) was used to introduce flexible crosslinking moieties and p-cresole was added to reduce the crosslinking density. Curing behaviour of the resins as well as thermal properties of cured samples were studied by the differential scanning calorimetry method (DSC). Enthalpies of endothermic low-temperature curing reactions in the temperature range of 120 to 165 °C were determined. A transition phenomenon is observed in the samples cured at 180 °C, that may be attributed to the wide (120&middot ; &middot ; &middot ; 170 °C) low-intensity glass transition. The temperature range of the transition is lower in comparison to unmodified resins (>150 °C). This may indicate a certain degree of the flexibilisation.

Izvorni jezik
Hrvatski

Znanstvena područja
Kemijsko inženjerstvo

POVEZANOST RADA