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Cure kinetics of epoxy matrix resin by differential scanning calorimetryA study was made on the cure kinetics of an epoxy neat-resin (Narmco 5208) using Differential Scanning Calorimetry (DSC). Two interrelated analytical methods were applied to dynamic DSC data for evaluating the kinetic parameters, such as activation energy, E, the order of reaction, n, and the total heat of polymerization (or crosslinking), delta H sub t. The first method was proposed by Ellerstein (1968), and uses a thorough differential-integral analysis of a single DSC curve to evaluate the kinetic parameters. The second method was proposed by Kissinger (1957), and uses multiple DSC curves obtained at various heating rates to evaluate E regardless of n. Kinetic analysis of Narmco 5208 epoxy resin showed that the reaction order, n, is substantially affected by the rate of heating; i.e., n is approximately 2 at slow scan rates but is reduced to 1.5 at higher scan rates. The activation energy, E, is not affected by the scan rate, and the average value of E is 25.6 + or - 1.8 kcal/mole.
Document ID
19820053569
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Cizmecioglu, M.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Gupta, A.
(California Institute of Technology, Jet Propulsion Laboratory, Pasadena CA, United States)
Date Acquired
August 10, 2013
Publication Date
January 1, 1982
Subject Category
Composite Materials
Meeting Information
Meeting: Reinforced Plastics/Composites Institute, Annual Conference
Location: Washington, DC
Start Date: January 11, 1982
End Date: January 15, 1982
Accession Number
82A37104
Funding Number(s)
CONTRACT_GRANT: NAS7-100
Distribution Limits
Public
Copyright
Other

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