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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. ; Uy Lan, Du Ngoc ; 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. (2021) . - ?.
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 °C, B-IPDA requires 100–120 °C, and B-AEP is best used for foaming in the range between 120 and 140 °C.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: Preprint, Publication 06.05.2021
Institutions of the University: Faculties
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
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences
600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 18 May 2021 12:36
Last Modified: 08 Jun 2021 09:37
URI: https://eref.uni-bayreuth.de/id/eprint/65249