A study on the toughening mechanism of rubber-modified polyfumctional epoxy resins

The toughening mechanism of CTBN rubber-toughened tri functional epoxy resins was studied using a scanning electron microscope. The SEM micrographs show that the CTBN rubber-modified tri functional epoxy resins are composite materials consisting of a continuous phase of epoxy resins and a CTBN rubbe...

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Bibliographic Details
Published in:Materials chemistry and physics 1986, Vol.15 (6), p.505-510
Main Authors: Yang, W.F., We, Y.Z.
Format: Article
Language:English
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Summary:The toughening mechanism of CTBN rubber-toughened tri functional epoxy resins was studied using a scanning electron microscope. The SEM micrographs show that the CTBN rubber-modified tri functional epoxy resins are composite materials consisting of a continuous phase of epoxy resins and a CTBN rubbery disperse phase. The toughening mechanism is discussed mainly in terms of the initiation and propagation of secondary microcracks during or before propagation of the primary cracks, and the several important models of the secondary microcrack formation are discussed in more detail. Our task was to control the morphology of the composite, the structures of separate phases and the interfacial adhesion in such a way as to obtain the best balance of properties.
ISSN:0254-0584
1879-3312
DOI:10.1016/0254-0584(86)90056-8