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Tailoring Epoxy Resin Foams by Pre-Curing with Neat Amine Hardeners and Its Derived Carbamates

Titelangaben

Bethke, Christian ; Goller, Sebastian M. ; Du Ngoc, Uy Lan ; Kaysser, Simon Tino ; Altstädt, Volker ; Ruckdäschel, Holger:
Tailoring Epoxy Resin Foams by Pre-Curing with Neat Amine Hardeners and Its Derived Carbamates.
In: Polymers. Bd. 13 (2021) Heft 8 . - 1348.
ISSN 2073-4360
DOI: https://doi.org/10.3390/polym13081348

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Link zum Volltext (externe URL): Volltext

Angaben zu Projekten

Projekttitel:
Offizieller Projekttitel
Projekt-ID
Particle-filled epoxy foam as new material concept for high precision abrasives and structural parts
Ohne Angabe

Projektfinanzierung: EU-Forschungsinitiative EUREKA
This research was funded by the Eurostars-2 joint program with co-funding from the European Union Horizon 2020 research and innovation program with the grant number 01QE1816B. The open access charges were funded by the University of Bayreuth in the funding program Open Access Publishing.

Abstract

The use of amine-based carbamates with their dual function, acting as amine curing agents and CO2 blowing agents after their decomposition without by-products, are promising for ecofriendly epoxy foams as high-performance materials. However, controlling cell morphology requires a proper adjustment of the viscosity at the foaming step. The viscosity is altered not only by blending neat amine and its derived carbamate at a fixed pre-curing time, but also by changing the pre-curing time at a fixed blend ratio. Within this study, diglycidylether of bisphenol A (DGEBA) epoxy resin is mixed with different blend ratios of isophorone diamine (IPDA) and its derived carbamate (B-IPDA). The systems are characterized by DSC and rheology experiments to identify the pre-curing effects on the derived epoxy foams. Epoxy foams at a blend ratio of 30/70w IPDA/B-IPDA showed the best foam morphology and an optimum Tg compared to other blend ratios. Furthermore, it was found that both pre-curing times, 2 h and 3 h, for the 30/70w IPDA/B-IPDA system reveal a more homogeneous cell structure. The study proves that the blending of neat amine and carbamate is beneficial for the foaming performance of carbamate systems.

Weitere Angaben

Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Keywords: epoxy foam; thermoset foam; carbamate; pre-curing; batch foaming; rheology; DSC
Institutionen der Universität: Fakultäten > Fakultät für Ingenieurwissenschaften
Fakultäten > Fakultät für Ingenieurwissenschaften > Ehemalige ProfessorInnen
Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Polymere Werkstoffe
Fakultäten > Fakultät für Ingenieurwissenschaften > Ehemalige ProfessorInnen > Lehrstuhl Polymere Werkstoffe - Univ.-Prof. Dr.-Ing. Volker Altstädt
Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Polymere Werkstoffe > Lehrstuhl Polymere Werkstoffe - Univ.-Prof. Dr.-Ing. Holger Ruckdäschel
Forschungseinrichtungen
Forschungseinrichtungen > Zentrale wissenschaftliche Einrichtungen
Forschungseinrichtungen > Zentrale wissenschaftliche Einrichtungen > Bayreuther Institut für Makromolekülforschung - BIMF
Forschungseinrichtungen > Institute in Verbindung mit der Universität
Forschungseinrichtungen > Institute in Verbindung mit der Universität > Bayerisches Polymerinstitut (BPI)
Fakultäten
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften
Eingestellt am: 18 Mai 2021 12:06
Letzte Änderung: 26 Mai 2023 06:20
URI: https://eref.uni-bayreuth.de/id/eprint/65246