Curing Kinetics of Epoxy Adhesive by Non-Isothermal DSC
Penulis:Â Dewi, Wiwiek Utami;Â Sutrisna, Rizky;Â Supriyatno, Heru;Â Astutiningsih, Sotya;Â Chalid, Mochamad
Informasi
JurnalMaterials Science Forum
PenerbitTrans Tech Publications Ltd
Volume & EdisiVol. 1114
Halaman145 - 152
Tahun Publikasi2024
ISSN02555476
Jenis SumberScopus
Abstrak
Non-isothermal DSC has been used to investigate the curing kinetics of epoxy adhesives (DGEBA-cycloaliphatic amine). The epoxy samples were scanned on DSC with five heating rates (5oC/min, 7.5oC/min, 10oC/min, 12.5oC/min, and 15oC/min). The curing kinetics were obtained through ASTM standards E2890 and E698 (the Ozawa and Kissinger methods). The kinetic parameters obtained include Ea (activation energy), A (pre-exponential factor), and n (reaction order). The activation energy calculated from the Kissinger and Ozawa method was slightly different but insignificant. The reaction rate (dα/dt) and degree of curing/conversion (α) relationship towards temperature (T), and time (t) was also investigated. The curing process's reaction rate (dα/dt) has maximum value; it can no longer increase after a specific conversion rate (α). © 2024 Trans Tech Publications Ltd, Switzerland.
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