Journal ArticleDOI
Epoxy networks based on dicyandiamide: effect of the cure cycle on viscoelastic and mechanical properties
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In this paper, it was shown using 13C nuclear magnetic resonance and Fourier-transform infra-red spectroscopies that the chemical reactions are temperature-dependent and the ability to deform plastically determined both via K parameter and yield stress increases on decreasing the crosslink density, as shown with high cure temperature.About:
This article is published in Polymer.The article was published on 1990-07-01. It has received 54 citations till now. The article focuses on the topics: Fracture mechanics & Young's modulus.read more
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Polybenzoxazines-New high performance thermosetting resins : Synthesis and properties
TL;DR: In this article, different synthetic strategies for the preparation of benzoxazine monomers and blends, their polymerization reaction mechanisms, and the structure-property relationships of the cured materials have been discussed.
Journal ArticleDOI
Mechanical characterization of copolymers based on benzoxazine and epoxy
Hatsuo Ishida,Douglas J. Allen +1 more
TL;DR: In this paper, a new class of phenolic-like thermosetting resins was developed that is based on the ring opening polymerization of a benzoxazine precursor, which is copolymerized with an epoxy resin in order to modify their performance.
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Water absorption by an epoxy resin and its effect on the mechanical properties and infra-red spectra
B De'Nève,Martin E.R. Shanahan +1 more
TL;DR: A filled epoxy resin used as a structural adhesive and based on the diglycidyl ether of bisphenol A cured with dicyandiamide has been subjected, in its bulk form, to ageing at 40, 55 and 70°C and ca. 100% relative humidity as discussed by the authors.
Journal ArticleDOI
Control of reactions and network structures of epoxy thermosets
TL;DR: In this paper, a review of the chemistry of epoxy resins, an almost century-old chemistry, is also involved in the movement of macromolecular chemistry and how this type of control affects the structure of the growing network.
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Layered Silicate Nanocomposites Based on Various High-Functionality Epoxy Resins: The Influence of Cure Temperature on Morphology, Mechanical Properties, and Free Volume
TL;DR: In this paper, the relationship between cure temperature, morphology, and mechanical properties of di-, tri-, and tetrafunctional high-performance, epoxy layered-silicate nanocomposites was investigated.
References
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Book
Fracture Mechanics of Polymers
TL;DR: A review of fracture mechanics and its relevance to designing with plastics is given in this article, where the basic philosophy of assuming the presence of flaws is developed, and the relevant equations are given.
Journal ArticleDOI
The beta relaxation in epoxy resin‐based networks
TL;DR: The dynamic properties of epoxy-amine networks have been studied using a torsion pendulum, and the effect of replacement of resin by monoglycidyl ethers on the beta relaxation has been determined as discussed by the authors.
Journal ArticleDOI
The mechanical properties of epoxy resins: Part 1 Mechanisms of plastic deformation
Salim Yamini,Robert J. Young +1 more
Journal ArticleDOI
Mechanism of the tertiary amine-catalyzed dicyandiamide cure of epoxy resins
TL;DR: In this paper, the early exothermic curing reaction is shown to be ring opening of the resin epoxy groups by dicyandiamide imino and amino anionic species, giving rise to N-alkyl cyanoguanidines; a minor amount of polyether formation also occurs at this time.