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Synthesis and Characterization of Dual-Functional Carbamates as Blowing and Curing Agents for Epoxy Foam

Title data

Bethke, Christian ; Kaysser, Simon T. ; Lan, Du Ngoc Uy ; Goller, Sebastian M. ; van der Zwan, Kasper P. ; Senker, Jürgen ; Ruckdäschel, Holger ; Altstädt, Volker:
Synthesis and Characterization of Dual-Functional Carbamates as Blowing and Curing Agents for Epoxy Foam.
In: Industrial & Engineering Chemistry Research. Vol. 60 (May 2021) Issue 19 . - pp. 7065-7080.
ISSN 1520-5045
DOI: https://doi.org/10.1021/acs.iecr.0c05262

Abstract in another language

With regard to upcoming regulations of common chemical blowing agents for epoxy foams, carbamates provide suitable alternatives. They act as blowing agents releasing CO2 and cure epoxy resins after decomposition and amine release. Thus, no undesired byproducts occur. In this study, a detailed analysis of the chemical structures, the decomposition, and the curing behavior of the carbamates received from N-aminoethylpiperazine (B-AEP), 4-methylcyclohexane-1,3-diamine (B-DMC), and isophorone diamine (B-IPDA) was attempted. The carbamates were finally used for foaming of diglycidylether of bisphenol-A (DGEBA)-based epoxy resins at different temperatures. By this, the performance of the carbamates in a foaming experiment could be qualitatively compared. The results show that all carbamates are suitable for foaming at specifically adapted temperatures. While B-DMC is able to foam properly only at 80 degrees C, B-IPDA requires 100-120 degrees C, and B-AEP is best used for foaming in the range between 120 and 140 degrees C.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Inorganic Chemistry III > Chair Inorganic Chemistry III - Univ.-Prof. Dr. Jürgen Senker
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 Centres > Nordbayerisches Zentrum für NMR-Spektroskopie - NMR-Zentrum
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Inorganic Chemistry III
Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Former Professors
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science
500 Science > 540 Chemistry
600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 13 Oct 2021 08:57
Last Modified: 13 Oct 2021 08:58
URI: https://eref.uni-bayreuth.de/id/eprint/67308