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Journal of Polymer Research
Published in: Journal of Polymer Research 3/2024

01-03-2024 | Original Paper

A trifunctional active ester for curing DGEBA: synthesis, curing behavior, and properties of its cured product

Authors: An Xing, Chenchen Gao, Peichen Yuan, Yajing Qiao, Longhai Guo, Xiaoyu Li, Wantai Yang

Published in: Journal of Polymer Research | Issue 3/2024

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Abstract

A trifunctional active ester curing agent, triacetoxytriphenylmethane (TATPM), which was dissolvable in diglycidyl ether of bisphenol A (DGEBA), was prepared and characterized. Though TATPM/DGEBA mixture was too viscous to flow at room temperature, its viscosity rapidly declined to a very low level when heating above 120 °C, showing great processability. Accelerators 4-dimethylaminopyridine (DMAP), 2-methylimidazole (2MI), and tetrabutylammonium bromide (TBAB) were used to catalyze the reactions between TATPM and DGEBA. DMAP-catalyzed one reached Tpeak and Tendset earlier, and showed higher conversion than 2MI and TBAB-catalyzed one, exhibiting superior accelerating effect. Ea and A of DMAP-catalyzed system were higher than that of 2MI-catalyzed system. Moreover, the properties of cured products depended on accelerator type, and DMAP-catalyzed one had the highest Tg, Td5%, and Td10%, lowest Df, EQUATION and saturated water uptake, making DMAP a better accelerator than 2MI and TBAB. Meanwhile, TATPM cured epoxies showed higher Td, lower Dk and Df than that of phenolic compound THTPM cured epoxies, despite of its lower Tg.
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Metadata
Title
A trifunctional active ester for curing DGEBA: synthesis, curing behavior, and properties of its cured product
Authors
An Xing
Chenchen Gao
Peichen Yuan
Yajing Qiao
Longhai Guo
Xiaoyu Li
Wantai Yang
Publication date
01-03-2024
Publisher
Springer Netherlands
Published in
Journal of Polymer Research / Issue 3/2024
Print ISSN: 1022-9760
Electronic ISSN: 1572-8935
DOI
https://doi.org/10.1007/s10965-024-03899-4

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