| Autor: |
Afrinaldi, Bambang, Rifathin, Annisa, Rahayu, Titin, Radini, Fitri Ayu, Yuliati, Frita, Mawarni, Rista Siti |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2023, Vol. 2902 Issue 1, p1-6, 6p |
| Abstrakt: |
Epoxy is a thermoset material with excellent mechanical performance, dimensional stability, as well as thermal and chemical stability. This performance is influenced by the cross-linked structure of epoxy. Usually, the cross-linker used for epoxy is amine and anhydride-based material. Other materials such as poly(carboxylic acid) can also be used as a cross-linker. In this study, the use of combinations of amine-based and poly(carboxylic acid) cross-linker is reported. A modified citric acid (CA) was synthesized in this study by reacting CA with ethylene glycol (EG) at various molar ratios. This modified CA was then mixed with the epoxy with multiple weight ratios. Thermal analyses such as differential scanning calorimeter (DSC) and thermogravimetry analysis (TGA) show that the curing and decomposition temperatures of epoxy are influenced by the type of cross-linker used. Curing temperature of epoxy with modified CA is 164.44°C while with amine based cross-linker is 57.43°C. The thermal stability of epoxy cross-linked with modified CA is higher compared to the one with amine-based cross-linker. Increasing the EG content in modified CA can decrease the decomposition temperature of the epoxy. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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