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

DOI zum Zitieren der Version auf EPub Bayreuth: https://doi.org/10.15495/EPub_UBT_00006475
URN to cite this document: urn:nbn:de:bvb:703-epub-6475-9

Title data

Bethke, Christian ; Goller, Sebastian Manfred ; Du Ngoc, Uy Lan ; Kaysser, Simon T. ; Altstädt, Volker ; Ruckdäschel, Holger:
Tailoring Epoxy Resin Foams by Pre-Curing with Neat Amine Hardeners and Its Derived Carbamates.
In: Polymers. Vol. 13 (2021) Issue 8 . - No. 1348.
ISSN 2073-4360
DOI der Verlagsversion: https://doi.org/10.3390/polym13081348

	Format: PDF Name: polymers-13-01348-v2.pdf Version: Published Version Available under License Creative Commons BY 4.0: Attribution
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Project information

Project title:	Project's official title Project's id Particle-filled epoxy foam as new material concept for high precision abrasives and structural parts No information Open Access Publizieren No information
Project financing:	EU-Forschungsinitiative EUREKA Eurostars-2 joint program with co-funding from the European Union Horizon 2020 research and innovation program

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.

Further data

Item Type:	Article in a journal
Keywords:	epoxy foam; thermoset foam; carbamate; pre-curing; batch foaming; rheology; DSC
DDC Subjects:	600 Technology, medicine, applied sciences > 620 Engineering
Institutions of the University:	Faculties > Faculty of Engineering Science Faculties > Faculty of Engineering Science > Former Professors Faculties > Faculty of Engineering Science > Chair Polymer Materials Faculties > Faculty of Engineering Science > Former Professors > Chair Polymer Materials - Univ.-Prof. Dr.-Ing. Volker Altstädt Faculties > Faculty of Engineering Science > Chair Polymer Materials > Chair Polymer Materials - Univ.-Prof. Dr.-Ing. Holger Ruckdäschel Research Institutions Research Institutions > Central research institutes Research Institutions > Central research institutes > Bayreuth Institute of Macromolecular Research - BIMF Research Institutions > Affiliated Institutes Research Institutions > Affiliated Institutes > Bavarian Polymer Institute (BPI) Faculties
Language:	English
Originates at UBT:	Yes
URN:	urn:nbn:de:bvb:703-epub-6475-9
Date Deposited:	07 Jul 2022 10:12
Last Modified:	16 Dec 2025 12:07
URI:	https://epub.uni-bayreuth.de/id/eprint/6475

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