Network formation in curing of epoxy resins View Full Text


Ontology type: schema:Chapter     


Chapter Info

DATE

1986

AUTHORS

Karel Dušek

ABSTRACT

The build-up of branched and crosslinked structures from polyepoxides and curing agents is investigated theoretically and experimentally. The basis of crosslinking theories and their application to curing of epoxy resins are reviewed and analyzed. The network build-up is dependent on the functionality of the monomers, reactivity of functional groups and reaction paths as a function of conversion of the reactive groups. The knowledge of the reaction mechanism is a necessary input information of the branching theory and it also determines which of the available methods (e.g. statistical or kinetic theory) is to be used. The curing of polyepoxides with polyamines, polycarboxylic polyacids and cyclic anhydrides is treated in more detail. The theoretical treatment of polyetherification (polymerization) of epoxy groups is outlined. Results obtained on simple polyamine-diepoxide systems agree well with the theory, acid curing still requires refinement of the theoretical treatment and especially much more experimental studies. The problems of the theoretical treatment of the network build-up in important epoxy resincuring agent formulations, to which the branching theory has not yet been applied, are briefly discussed The problems of homogeneity or inhomogeneity of cured epoxy resins and of the diffusion control are also analyzed. More... »

PAGES

1-59

Book

TITLE

Epoxy Resins and Composites III

ISBN

3-540-15936-3

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/bfb0035356

DOI

http://dx.doi.org/10.1007/bfb0035356

DIMENSIONS

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