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- W3209717712 abstract "The current research work presents a novel nonionic curing agent (AEDA) synthesized by utilizing ethylene glycol diglycidyl ether (EGDE), 3,4‐dimethoxyaniline (DI), and triethylenetetramine (TETA). Infrared spectroscopy and nuclear magnetic resonance spectroscopy were used to characterize the structure of AEDA curing agent. Non‐isothermal scanning calorimetry was used to determine the activation energy and curing conditions of epoxy resin in the curing process. An impact testing machine, a tensile testing machine and a scanning electron microscope (SEM) were used to analyze the impact strength, tensile strength, bending strength, and micromorphology of the AEDA/E‐51 system with different mass ratios. The results show that AEDA is an effective high‐temperature curing agent. For the AEDA/E‐51 system with the optimal mass ratio of 10:100, the best curing temperature is 92.15°C, and the post‐curing temperature is 135.65°C. Furthermore, the apparent activation energy ( E a ) of 1670 J/mol, the pre‐exponential factor ( A ) of 3.7 × 10 −4 , and the reaction series ( n ) value of 0.76 are obtained for the AEDA/E‐51 system. The impact strength of AEDA/E‐51 epoxy resin polymer is 7.82 kJ/m 2 , tensile strength is 14.2 MPa, and bending strength is 18.92 MPa. The micromorphological results of the AEDA/E‐51 system are consistent with the results of DSC test and mechanical properties test. Hence, this study provides theoretical support for the practical applications of AEDA as curing agent." @default.
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- W3209717712 date "2021-10-24" @default.
- W3209717712 modified "2023-10-16" @default.
- W3209717712 title "Effect of new nonionic curing agent on curing kinetics and mechanical properties of epoxy resin" @default.
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- W3209717712 doi "https://doi.org/10.1002/pat.5523" @default.
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