Influence of different organoclays on the curing, morphology, and dynamic mechanical properties of an epoxy adhesive

García del Cid, M.A. and Gonzalez Prolongo, Margarita and Salom Coll, Catalina and Sanchez-Cabezudo Tirado, Marta and Masegosa Fanego, Rosa María (2014). Influence of different organoclays on the curing, morphology, and dynamic mechanical properties of an epoxy adhesive. "Journal of Adhesion", v. 90 (n. 10); pp. 817-834. ISSN 0021-8464. https://doi.org/10.1080/00218464.2014.903656.

Description

Title: Influence of different organoclays on the curing, morphology, and dynamic mechanical properties of an epoxy adhesive
Author/s:
  • García del Cid, M.A.
  • Gonzalez Prolongo, Margarita
  • Salom Coll, Catalina
  • Sanchez-Cabezudo Tirado, Marta
  • Masegosa Fanego, Rosa María
Item Type: Article
Título de Revista/Publicación: Journal of Adhesion
Date: 2014
ISSN: 0021-8464
Volume: 90
Subjects:
Faculty: E.T.S.I. Aeronáuticos (UPM)
Department: Materiales y Producción Aeroespacial
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The thermal, mechanical, and adhesive properties of nanoclay-modified adhesives were investigated. Two organically modified montmorillonites: Cloisite 93A (C93A) and Nanomer I.30E (I.30E) were used as reinforcement of an epoxy adhesive. C93A and I.30E are modified with tertiary and primary alkyl ammonium cations, respectively. The aim was to study the influence of the organoclays on the curing, and on the mechanical and adhesive properties of the nanocomposites. A specific goal was to compare their behavior with that of Cloisite30B/epoxy and Cloisite15A/ epoxy nanocomposites that we have previously studied. Both C30B and C15A are modified with quaternary alkyl ammonium cations. Differential scanning calorimetry results showed that the clays accelerate the curing reaction, an effect that is related to the chemical structure of the ammonium cations. The three Cloisite/nanocomposites showed intercalated clay structures,the interlayer distance was independent of the clay content. The I.30E/epoxy nanocomposites presented exfoliated structure due to the catalytic effect of the organic modifier. Clay-epoxy nanocompo-sites showed lower glass transition temperature (Tg) and higher values of storage modulus than neat epoxy thermoset, with no significant differences between exfoliated or intercalated nanocom-posites. The shear strength of aluminum joints using clay/epoxy adhesives was lower than with the neat epoxy adhesive. The wáter aging was less damaging for joints with I.30E/epoxy adhesive.

More information

Item ID: 35976
DC Identifier: http://oa.upm.es/35976/
OAI Identifier: oai:oa.upm.es:35976
DOI: 10.1080/00218464.2014.903656
Official URL: http://www.tandfonline.com/doi/abs/10.1080/00218464.2014.903656
Deposited by: Memoria Investigacion
Deposited on: 19 Oct 2015 10:35
Last Modified: 05 Feb 2016 17:11
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