Matches in SemOpenAlex for { <https://semopenalex.org/work/W1979877517> ?p ?o ?g. }
Showing items 1 to 87 of
87
with 100 items per page.
- W1979877517 endingPage "1421" @default.
- W1979877517 startingPage "1413" @default.
- W1979877517 abstract "The cure kinetics of a diglycidyl ether of bisphenol A (DGEBA)-based epoxy resin with methyltetrahydrophthalic anhydride and an accelerator was studied by nonisothermal DSC data. The systems were uncured resin and partially cured with the following extents of cure measured by the residual heat method (αDSC): 0.37, 0.63, 0.81, and 0.90. The activation energy calculated by the Kissinger method increases from 63 kJ/mol for the uncured epoxy to 77 kJ/mol for the partially cured with αDSC = 0.90. Additionally, the activation energy calculated by the isoconversional method shows a dependence on the conversion degree α. The activation energy tends to decreases initially with the conversion degree, possibly due to the autocatalytic effect; then, it passes through a minimum about α = 0.4 and, finally, increases slightly due to the increase of crosslinks which reduce the mobility of the unreacted groups. A simple, consistent method of kinetic analysis was applied. This method enables one to select the most convenient model and the calculation of kinetic parameters. A two-parameter (m, n) autocatalytic model (S̆esták–Berggren equation) was found to be the most convenient model to study the curing of epoxy systems. The results show a dependence of the kinetic parameters on the initial degree of crosslinking of the partially cured epoxy. The exponent m tends to decrease with the extent of cure, while the exponent n remains practically invariable. These results show a change of the kinetic when the initial extent of cure of the epoxy system increases. The In A data, A being the preexponenetial factor in the Arrhenius dependence of the temperature on the rate of conversion, increase with the extent of cure, showing a correlation with the calculated activation energy values. The nonisothermal DSC curves theoretically calculated show a very good agreement with the experimental data. The two-parameter (m, n) autocatalytic model gives a good description of the curing kinetics of epoxy resins with different extents of cure. © 1995 John Wiley & Sons, Inc." @default.
- W1979877517 created "2016-06-24" @default.
- W1979877517 creator A5004206733 @default.
- W1979877517 creator A5009709557 @default.
- W1979877517 creator A5012553504 @default.
- W1979877517 creator A5036143517 @default.
- W1979877517 date "1995-06-13" @default.
- W1979877517 modified "2023-10-18" @default.
- W1979877517 title "Effect of the crosslinking degree on curing kinetics of an epoxy–anhydride system" @default.
- W1979877517 doi "https://doi.org/10.1002/app.1995.070561104" @default.
- W1979877517 hasPublicationYear "1995" @default.
- W1979877517 type Work @default.
- W1979877517 sameAs 1979877517 @default.
- W1979877517 citedByCount "77" @default.
- W1979877517 countsByYear W19798775172012 @default.
- W1979877517 countsByYear W19798775172013 @default.
- W1979877517 countsByYear W19798775172014 @default.
- W1979877517 countsByYear W19798775172015 @default.
- W1979877517 countsByYear W19798775172016 @default.
- W1979877517 countsByYear W19798775172017 @default.
- W1979877517 countsByYear W19798775172018 @default.
- W1979877517 countsByYear W19798775172020 @default.
- W1979877517 countsByYear W19798775172021 @default.
- W1979877517 countsByYear W19798775172022 @default.
- W1979877517 countsByYear W19798775172023 @default.
- W1979877517 crossrefType "journal-article" @default.
- W1979877517 hasAuthorship W1979877517A5004206733 @default.
- W1979877517 hasAuthorship W1979877517A5009709557 @default.
- W1979877517 hasAuthorship W1979877517A5012553504 @default.
- W1979877517 hasAuthorship W1979877517A5036143517 @default.
- W1979877517 hasConcept C121332964 @default.
- W1979877517 hasConcept C132976073 @default.
- W1979877517 hasConcept C135889238 @default.
- W1979877517 hasConcept C147789679 @default.
- W1979877517 hasConcept C148898269 @default.
- W1979877517 hasConcept C159985019 @default.
- W1979877517 hasConcept C166595027 @default.
- W1979877517 hasConcept C185592680 @default.
- W1979877517 hasConcept C188027245 @default.
- W1979877517 hasConcept C192562407 @default.
- W1979877517 hasConcept C24890656 @default.
- W1979877517 hasConcept C2775997480 @default.
- W1979877517 hasConcept C2776436638 @default.
- W1979877517 hasConcept C2779684741 @default.
- W1979877517 hasConcept C37263863 @default.
- W1979877517 hasConcept C62520636 @default.
- W1979877517 hasConcept C95121573 @default.
- W1979877517 hasConcept C97355855 @default.
- W1979877517 hasConceptScore W1979877517C121332964 @default.
- W1979877517 hasConceptScore W1979877517C132976073 @default.
- W1979877517 hasConceptScore W1979877517C135889238 @default.
- W1979877517 hasConceptScore W1979877517C147789679 @default.
- W1979877517 hasConceptScore W1979877517C148898269 @default.
- W1979877517 hasConceptScore W1979877517C159985019 @default.
- W1979877517 hasConceptScore W1979877517C166595027 @default.
- W1979877517 hasConceptScore W1979877517C185592680 @default.
- W1979877517 hasConceptScore W1979877517C188027245 @default.
- W1979877517 hasConceptScore W1979877517C192562407 @default.
- W1979877517 hasConceptScore W1979877517C24890656 @default.
- W1979877517 hasConceptScore W1979877517C2775997480 @default.
- W1979877517 hasConceptScore W1979877517C2776436638 @default.
- W1979877517 hasConceptScore W1979877517C2779684741 @default.
- W1979877517 hasConceptScore W1979877517C37263863 @default.
- W1979877517 hasConceptScore W1979877517C62520636 @default.
- W1979877517 hasConceptScore W1979877517C95121573 @default.
- W1979877517 hasConceptScore W1979877517C97355855 @default.
- W1979877517 hasIssue "11" @default.
- W1979877517 hasLocation W19798775171 @default.
- W1979877517 hasOpenAccess W1979877517 @default.
- W1979877517 hasPrimaryLocation W19798775171 @default.
- W1979877517 hasRelatedWork W1979877517 @default.
- W1979877517 hasRelatedWork W2059276032 @default.
- W1979877517 hasRelatedWork W2071902181 @default.
- W1979877517 hasRelatedWork W2077979913 @default.
- W1979877517 hasRelatedWork W2080924197 @default.
- W1979877517 hasRelatedWork W2085293893 @default.
- W1979877517 hasRelatedWork W2129192366 @default.
- W1979877517 hasRelatedWork W2376020352 @default.
- W1979877517 hasRelatedWork W2547669656 @default.
- W1979877517 hasRelatedWork W4311285309 @default.
- W1979877517 hasVolume "56" @default.
- W1979877517 isParatext "false" @default.
- W1979877517 isRetracted "false" @default.
- W1979877517 magId "1979877517" @default.
- W1979877517 workType "article" @default.