Journal ArticleDOI
Effect of curing agents on some properties of a polysulfide sealant
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TLDR
In this article, the effect of curing agents on the properties of polysulfide sealant composition was investigated and it was established that curing agents affect joint strengths, stress-strain properties, dynamic mechanical properties, and thermal stability of the sealant.Abstract:
The effect of curing agents on the properties of a polysulfide sealant composition was investigated. Commercially used curing agents, namely, lead dioxide, manganese dioxide, and ammonium dichromate, were selected for this study. It was established that curing agents affect joint strengths, stress–strain properties, dynamic mechanical properties, and thermal stability of the sealant. Sealant cured with ammonium dichromate had highest shear bond strength, ultimate tensile strength, modulus, and thermal stability, whereas these properties were lowest for lead-dioxide-cured sealant. Peel bond strength and elongation at break were highest for lead-dioxide-cured sealant. The observed changes in properties were attributed to the difference in crosslink density of the cured sealant, produced by the curing agents. The curing agents have no appreciable effect on the fuel resistance of the polysulfide sealant.read more
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Preparation and Characterization of Polyurethane/ Polysulfide Miscible Blend Nanocomposites Effect of Nanoclay Reinforcement on Morphology, Mechanical and Thermal Properties
TL;DR: In this paper, a novel elastomeric miscible blend nanocomposites have been prepared by co-reacting isocyanate terminated liquid polyurethane pre-polymer with thiol terminated polysulfide together with chain extender, modified organic nanoclay, and curator.
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Influence of Nanoclay on the Adhesive and Physico-Mechanical Properties of Liquid Polysulfide Elastomer
TL;DR: In this article, Cloisite 30B nanoclay particles were added to a typical ammonium dichromate cured liquid polysulfide elastomeric adhesive to increase the aluminum-aluminum joint strength measured by 180° peel test.
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Synthesis and characterization of bis(oxiranylmethyl)sulfanes as new epoxide‐terminated polysulfide prepolymers and their use in synthesis of new amine‐cured polysulfide polymers
Journal ArticleDOI
Polysulfidkleb- und Dichtstoffe: Problemlöser für schwierige Fälle
Manfred Pröbster,Stefan Grimm +1 more
TL;DR: Ausergewohnliche Kleb-and Dichtstoffklasse as mentioned in this paper finden sie dort ihre Anwendung, wo es auf dauerhafte elastische Verklebung und Abdichtung unter schwierigen klimatischen sowie anderen Umwelteinflussen ankommt.