Synthesis of s-triazine based tri-imidazole derivatives and their application as thermal latent curing agents for epoxy resin
Article
Article Title | Synthesis of s-triazine based tri-imidazole derivatives and their application as thermal latent curing agents for epoxy resin |
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ERA Journal ID | 1005 |
Article Category | Article |
Authors | Yang, Shuang, Zhang, Qiaoxin, Hu, Yefa, Ding, Guoping, Wang, Jun, Huo, Siqi, Zhang, Bin and Cheng, Jianwen |
Journal Title | Materials Letters |
Journal Citation | 216, pp. 127-130 |
Number of Pages | 4 |
Year | 2018 |
Publisher | Elsevier |
Place of Publication | Netherlands |
ISSN | 0167-577X |
1873-4979 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.matlet.2017.12.122 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S0167577X1731889X |
Abstract | A series of novel s-triazine based tri-imidazole derivatives were successfully prepared through the substitution reaction of cyanuric chloride with imidazole (IM), 2-methylimidazole (2MI), 2-ethylimidazole (2EI) and 2-ethyl-4-methylimidazole (EMI), respectively. The synthesized tri-imidazole derivatives were applied in epoxy resin (EP) to investigate their curing behaviors and thermal latency. Compared with the EP systems containing the unmodified imidazoles, the curing exothermic peaks of the EP systems containing s-triazine based tri-imidazole derivatives shifted to higher temperature regions. Moreover, the EP systems containing s-triazine based tri-imidazole derivatives had much longer storage stability at room temperature. The s-triazine structure with strong electron withdrawing effect reduced the nucleophilicity of pyridine-like nitrogen atom of imidazole ring, resulting in the suppression of reactivity of the modified imidazole derivatives towards EP at room temperature. Nevertheless, the s-triazine based tri-imidazole derivatives regained fast curing performance towards EP at elevated temperatures. |
Keywords | Epoxy resin; Imidazole; Latent curing agent; Polymers; S-triazine; Thermal analysis |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 401609. Polymers and plastics |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Wuhan University of Technology, China |
https://research.usq.edu.au/item/yyy0q/synthesis-of-s-triazine-based-tri-imidazole-derivatives-and-their-application-as-thermal-latent-curing-agents-for-epoxy-resin
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