Curing Kinetics of Epoxy Adhesive by Non-Isothermal DSC

Wiwiek Utami Dewi, Rizky Sutrisna, Heru Supriyatno, Sotya Astutiningsih, Mochamad Chalid

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

Abstract

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).

Original languageEnglish
Title of host publicationMaterials Science Forum
PublisherTrans Tech Publications Ltd
Pages145-152
Number of pages8
DOIs
Publication statusPublished - 2024

Publication series

NameMaterials Science Forum
Volume1114
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Keywords

  • adhesive
  • curing kinetics
  • DSC
  • Epoxy
  • Kissinger
  • non-isothermal
  • Ozawa

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