Exploració per autor "Fernández Francos, Xavier"
Ara es mostren els items 21-40 de 115
-
Curing and thermomechanical properties of off-stoichiometric anhydride-epoxy thermosets
(Springer, 2019-11)
Article
Accés obertn the present work, we report the preparation and characterization of a new family of thermosets based on off-stoichiometric anhydride–epoxy formulations in the presence of an anionic initiator. Diglycidyl ether of bisphenol ... -
Curing kinetics and characterization of dual-curable thiol-acrylate-epoxy thermosets with latent reactivity
(2018-01)
Article
Accés obertA new dual-curing scheme was developed for thiol-acrylate-epoxy mixtures. A photo-initiated latent catalytic system was used to carry out thiol-acrylate Michael addition at 35 °C (Stage 1) followed by thiol-epoxy click ... -
Curing kinetics of acrylate-based and 3D printable IPNs
(2020-10-01)
Article
Accés obertIn this work, the kinetics of curing of a new family of interpenetrating polymer networks (IPNs) obtained by co-formulation of a photocurable acrylic resin with a thermocurable epoxy/anhydride mixture is studied. The first ... -
Curing kinetics of dually-processed acrylate-epoxy 3D printing resins
(2021-07-01)
Article
Accés obertIn this work, the curing kinetics of a new ternary acrylate/epoxy/anhydride thermoset system which is used for dual-curing 3D-printing applications is studied. The first curing stage is an acrylate free-radical photopolymerization ... -
Curing of off-stoichiometric amine–epoxy thermosets
(Springer, 2018-07)
Article
Accés obertThe kinetics of the epoxy–amine polycondensation and the epoxy homopolymerization in off-stoichiometric epoxy/amine formulations with excess of epoxy groups, and in the presence of an anionic initiator have been investigated. ... -
Determinació experimental de la calor específica d'un brou
(2021-10-04)
Report de recerca
Accés restringit per acord de confidencialitatS'ha determinat la capacitat calorífica d'un brou demanat per LLUÍS JANÉ BUSQUETS LABORATORI D'ANÀLISI S.L. a les temperatures de 60, 65 i 70 ºC. L'assaig s'ha fet mitjançant un calorímetre DSC3+ de Mettler. La determinació ... -
Dual curing of an epoxy resin with dicarboxylic acids
(Springer, 2020-03-18)
Article
Accés restringit per política de l'editorialIn this work, we have studied the preparation and characterization of a new family of thermosets based on off-stoichiometric diacid-epoxy formulations in the presence of 1-methylimidazole as initiator. Tri-glycidyl para-amino ... -
Dual-curable stereolithography resins for superior thermomechanical properties
(2020-09-01)
Article
Accés obertStereolithography (SL) stands out as a relatively fast additive manufacturing method to produce thermoset components with high resolutions. The majority of SL resins consist of acrylate monomers which result in materials ... -
Easily recycled thiol-ene elastomers with controlled creep
(Elsevier, 2024-03)
Article
Accés obertStarting from in-house synthesized allylic monomers containing dynamic disulfide (S–S) bonds, a set of vitrimeric thiol-ene elastomers were prepared and characterized with respect to their viscoelastic and tensile properties. ... -
Effect of a hyperbranched polymer over the thermal curing and the photocuring of an epoxy resin
(2011)
Article
Accés restringit per política de l'editorialIn this study, the authors study by calorimetry the influence of hyperbranched polyester Boltron®H40 on the thermal curing and the photocuring of a diglycidyl ether of bisphenol epoxy resin (DGEBA) using ytterbium (III) ... -
Effect of hydroxyl ended and end-capped multiarm star polymers on the curing process and mechanical characteristics of epoxy/anhydride thermosets
(2014-08-01)
Article
Accés restringit per política de l'editorialMultiarm star polymers have been synthesized by cationic ring-opening polymerization of epsilon-caprolactone from a hyperbranched poly(ethyleneimine) core and end-capped with acetic anhydride. These star polymers have been ... -
Effect of the network structure and programming temperature on the shape-memory response of thiol-epoxy "click" systems
(2015-10-01)
Article
Accés obertThis paper presents a new methodology to develop “thiol-epoxy” shape-memory polymers (SMPs) with enhanced mechanical properties in a simple and efficient manner via “click” chemistry by using thermal latent initiators. ... -
Efficient impact resistance improvement of epoxy/anhydride thermosets by adding hyperbranched polyesters partially modified with undecenoyl chains
(Elsevier, 2012-10-26)
Article
Accés restringit per política de l'editorialBoltorn H30 hyperbranched polyester has been modified by acylation with 10-undecenoyl chloride to obtain HBPs with different degree of modification. These HBPs have been used as reactive modifiers, in a proportion of 5 and ... -
Electro-responsive shape-memory composites obtained via dual-curing processing
(2022-01-01)
Article
Accés obertIn this work, electro-responsive shape-memory actuators were developed by incorporating a conductive heater in a dual-curing thiol-acrylate-epoxy shape-memory polymer (SMP). A conductive heater, consisting of an electrically ... -
Enhancement in the glass transition temperature in latent thiol-epoxy click cured thermosets
(2015-01-01)
Article
Accés obertTri 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 ... -
Enhancement of 3D-printable materials by dual-curing procedures
(Multidisciplinary Digital Publishing Institute (MDPI), 2021-01-01)
Article
Accés obertDual-curing thermosetting systems are recently being developed as an alternative to conventional curing systems due to their processing flexibility and the possibility of enhancing the properties of cured parts in single- ... -
Enhancement of the impact strength of cationically cured cycloaliphatic diepoxide by adding hyperbranched poly(glycidol) partially modified with 10-undecenoyl chains
(2013-06)
Article
Accés restringit per política de l'editorialA hyperbranched poly(glycidol) has been synthesized and modified by acylation with 10-undecenoyl chloride to obtain hyperbranched polymers (HBPs) with different degree of modification. These HBPs have been used as reactive ... -
Environmentally-friendly processing of thermosets by two-stage sequential aza-Michael addition and free-radical polymerization of amine-acrylate mixtures
(2015-01-01)
Article
Accés obertA new dual-curing, solvent-free process is described for the preparation of tailor-made materials from off-stoichiometric amine-acrylate formulations. The first stage reaction is a self-limiting click aza-Michael addition ... -
Epoxy Doped, Nano-scale Phase-separated Poly-Acrylates with Potential in 3D Printing
(2021-01-01)
Article
Accés obertAn efficient method to improve the mechanical performance of a commercially available photocure resin is described wherein the resin is modified with a mixture of a cycloaliphatic epoxy and an anhydride curing agent. ... -
Epoxy sol-gel hybrid thermosets
(MDPI AG, 2016-02-03)
Article
Accés obertSol-gel methodologies are advantageous in the preparation of hybrid materials in front of the conventional addition of nanoparticles, because of the fine dispersion of the inorganic phase that can be reached in epoxy ...
