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Enhancement in the glass transition temperature in latent thiol-epoxy click cured thermosets

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Guzmán, Daylin
Ramis Juan, XavierMés informacióMés informacióMés informació
Fernández Francos, XavierMés informacióMés informacióMés informació
Serra Albet, Maria ÀngelsMés informació
Document typeArticle
Defense date2015-01-01
Rights accessOpen Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 3.0 Spain
Abstract
Tri and tetrafunctional thiol were used as curing agent for diglycidyl ether of bisphenol A (DGEBA) catalyzed by a commercially available amine precursor, LC-80. Triglycidyl isocianurate (TGIC) was added in different proportions to the mixture to increase rigidity and glass transition temperature (T-g). The cooperative effect of increasing functionality of thiol and the presence of TGIC in the formulation leads to an increased T-g without affecting thermal stability. The kinetics of the curing of mixtures was studied by calorimetry under isothermal and non-isothermal conditions. The latent characteristics of the formulations containing amine precursors were investigated by rheometry and calorimetry. The increase in the functionality of the thiol produces a slight decrease in the storage lifetime of the mixture. The materials obtained with tetrathiol as curing agent showed the highest values of Young's modulus and T-g.
CitationGuzmán, D., Ramis, X., Fernández, X., Serra, À. Enhancement in the glass transition temperature in latent thiol-epoxy click cured thermosets. "Polymers", 01 Gener 2015, vol. 7, núm. 4, p. 680-694. 
URIhttp://hdl.handle.net/2117/77491
DOI10.3390/polym7040680
ISSN2073-4360
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  • POLTEPO - Polímers Termoestables Epoxídics - Articles de revista [107]
  • Departament de Màquines i Motors Tèrmics - Articles de revista [449]
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