Print Email Facebook Twitter Synthesis of tri-aryl ketone amine isomers and their cure with epoxy resins Title Synthesis of tri-aryl ketone amine isomers and their cure with epoxy resins Author Reyes, Larry Q. (Deakin University) Dao, Buu (CSIRO Manufacturing, Victoria) Vogel, W. (TU Delft Novel Aerospace Materials) Bijleveld, J.C. (TU Delft Novel Aerospace Materials) Tucker, Sam (Boeing) Christensen, Steve (Schrödinger Inc.) Wiggins, Jeffrey (University of Southern Mississippi) Dingemans, T.J. (University of North Carolina) Varley, Russell J. (Deakin University) Date 2019 Abstract Isomeric tri-aryl ketone amines, 1,3-bis(3-aminobenzoyl)benzene (133 BABB), 1,3-bis(4-aminobenzoyl)benzene (134 BABB), and 1,4-bis(4-aminobenzoyl)benzene (144 BABB) are synthesized and cured with diglycidyl ether of bisphenol A and diglycidyl ether of bisphenol F in this work. Differential scanning calorimetry and near-infrared spectroscopy reveal higher rate constants and enhanced secondary amine conversion with increasing para substitution attributed to resonance effects and the electron withdrawing nature of the carbonyl linkages. Glass transition temperatures increase from 133 BABB to 134 BABB, but decrease modestly for the 144 BABB hardener. With increasing para substitution, the flexural modulus and strength both decrease while the strain to failure increases but all BABB amines displaying higher mechanical properties than the corresponding 4,4-diaminodiphenyl sulfone (44 DDS) networks. The thermal stability of the BABB networks is found to be modestly lower than 44 DDS, but char yields are significantly higher. Changes in thermal and mechanical properties are described in terms of molecular structure and equilibrium packing density. Subject epoxy amine crosslinked networksreaction kineticsstructure property relationships To reference this document use: http://resolver.tudelft.nl/uuid:7c772a7f-3c7b-4a27-a356-013a6bbf9be7 DOI https://doi.org/10.1002/pat.4818 Embargo date 2021-01-01 ISSN 1042-7147 Source Polymers for Advanced Technologies, 31 (4), 827-837 Part of collection Institutional Repository Document type journal article Rights © 2019 Larry Q. Reyes, Buu Dao, W. Vogel, J.C. Bijleveld, Sam Tucker, Steve Christensen, Jeffrey Wiggins, T.J. Dingemans, Russell J. Varley Files PDF Synthesis_of_tri_aryl_ket ... resins.pdf 1.12 MB Close viewer /islandora/object/uuid:7c772a7f-3c7b-4a27-a356-013a6bbf9be7/datastream/OBJ/view