Abstract
Novel soluble PEG-imidazole compounds were synthesized and evaluated as thermal latent catalysts for the polymerization of diglycidyl ether of bisphenol A (DGEBA) under liquid–liquid or liquid–solid (≥ PEG1000) two phase systems. Soluble PEG-imidazole homogeneous catalysts were used to cure epoxy resin system for the investigation of their thermal latency and storage stability. From the results, the PEG200-imidazole catalyst showed better thermal latency than PEG400-imidazole, PEG600-imidazole and PEG1000-imidazole. Concerning the glass transition temperature (Tg), the use of novel PEG200-imidazole and PEG600-imidazole catalysts provided complete or near complete curing systems in the temperature range about 155 °C. Results from the cure activation energy and the viscosity-storage time of these catalysts, the order of thermally latent activity was PEG200-imidazole (1) > PEG400-imidazole (2) > PEG600-imidazole (3) > PEG1000-imidazole (4) > 1-cyanoethyl-2-ethyl-4-methylimidazole (2E4MZ-CN) > imidazole.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of the Taiwan Institute of Chemical Engineers
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
