Aleš Ručigaj (Avtor), Žan Kovačič (Avtor), Žiga Štirn (Avtor), Matjaž Krajnc (Avtor)

Povzetek

A new epoxy curing system, combining amine and maleimide functionality into a single molecule, was introduced to broaden current state of the art as regards epoxy, amine and maleimide systems. Curing agent aminomaleimide was tested in the curing process of several aromatic and aliphatic epoxies. Prepared mixtures in different weight (molar) ratios were investigated by nonisothermal differential scanning calorimetry to study and compare curing kinetics of different epoxies. The apparent activation energy was determined by Kissinger method, while Friedman method accompanied by Malék statistical approach was used in confirming the autocatalytic nature of epoxy curing and additional maleimide polymerization at the excess amount of aminomaleimide. Thermo-mechanical properties were determined by dynamic mechanical analysis and the effect of aminomaleimide curing agent compared to curing agent containing only amino functional groups was evaluated. Aminomaleimide showed improvement in the glass transition temperatures and higher char yields due to the involvement of maleimide moiety in the curing process. In overall, aminomaleimide showed the positive one-molecule joint effect of the amino group, behaving as an accelerator, and maleimide group, a mechanical properties enhancer.

Ključne besede

epoksi;amini;maleimid;kinetika zamreževanja;termične lastnosti;epoxy;amine;maleimide;curing kinetics;thermal properties;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UL FKKT - Fakulteta za kemijo in kemijsko tehnologijo
UDK: 678.686
COBISS: 17850883 Povezava se bo odprla v novem oknu
ISSN: 0040-6031
Št. ogledov: 602
Št. prenosov: 130
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Slovenski jezik
Sekundarne ključne besede: epoksi;amini;maleimid;kinetika zamreževanja;termične lastnosti;
Vrsta dela (COBISS): Članek v reviji
Konec prepovedi (OpenAIRE): 2022-06-01
Strani: str. 1-10
Zvezek: ǂVol. ǂ690
Čas izdaje: Aug. 2020
DOI: 10.1016/j.tca.2020.178668
ID: 11807745