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Study of the synergistic effect of boron nitride and carbon nanotubes in the improvement of thermal conductivity of epoxy composites

  • Identification data

    Identifier: imarina:6016140
    Authors:
    Isarn, IsaacBonnaud, LeilaMassagues, LluisSerra, AngelsFerrando, Francesc
    Abstract:
    The enhancement of the thermal conductivity, keeping the electrical insulation, of epoxy thermosets through the addition of pristine and oxidized carbon nanotubes (CNTs) and microplatelets of boron nitride (BN) was studied. Two different epoxy resins were selected: a cycloaliphatic (ECC) epoxy resin and a glycidylic (DGEBA) epoxy resin. The characteristics of the composites prepared were evaluated and compared in terms of thermal, thermomechanical, rheological and electrical properties. Two different dispersion methods were used in the addition of pristine and oxidized CNTs depending on the type of epoxy resin used. Slight changes in the kinetics of the curing reaction were observed in the presence of the fillers. The addition of pristine CNTs led to a greater enhancement of the mechanical properties of the ECC composite whereas the oxidized CNTs presented a greater effect in the DGEBA matrix. The addition of CNTs alone led to a marked decrease of the electrical resistivity of the composites. Nevertheless, in the presence of BN, which is an electrically insulating material, it was possible to increase the proportion of pristine CNTs to 0.25 wt% in the formulation without deterioration of the electrical resistivity. A small but significant synergic effect was determined when both fillers were added together. Improvements of about 750% and 400% in thermal conductivity were obtained in comparison to the neat epoxy matrix for the ECC and DGEBA composites, respectively. (c) 2019 Society of Chemical Industry
  • Others:

    Author, as appears in the article.: Isarn, Isaac; Bonnaud, Leila; Massagues, Lluis; Serra, Angels; Ferrando, Francesc
    Department: Enginyeria Mecànica Química Analítica i Química Orgànica Enginyeria Electrònica, Elèctrica i Automàtica
    URV's Author/s: Ferrando Piera, Francesc / Isarn Garcia, Isaac / Massagués Vidal, Lluís / Serra Albet, Maria Angels
    Keywords: Thermal conductivity Stability Platelets Permeability Nanocomposites Mechanical-properties Graphene Functionalization Epoxy resins Composites Coatings Carbon nanotubes Boron nitride Behavior Adhesive strength
    Abstract: The enhancement of the thermal conductivity, keeping the electrical insulation, of epoxy thermosets through the addition of pristine and oxidized carbon nanotubes (CNTs) and microplatelets of boron nitride (BN) was studied. Two different epoxy resins were selected: a cycloaliphatic (ECC) epoxy resin and a glycidylic (DGEBA) epoxy resin. The characteristics of the composites prepared were evaluated and compared in terms of thermal, thermomechanical, rheological and electrical properties. Two different dispersion methods were used in the addition of pristine and oxidized CNTs depending on the type of epoxy resin used. Slight changes in the kinetics of the curing reaction were observed in the presence of the fillers. The addition of pristine CNTs led to a greater enhancement of the mechanical properties of the ECC composite whereas the oxidized CNTs presented a greater effect in the DGEBA matrix. The addition of CNTs alone led to a marked decrease of the electrical resistivity of the composites. Nevertheless, in the presence of BN, which is an electrically insulating material, it was possible to increase the proportion of pristine CNTs to 0.25 wt% in the formulation without deterioration of the electrical resistivity. A small but significant synergic effect was determined when both fillers were added together. Improvements of about 750% and 400% in thermal conductivity were obtained in comparison to the neat epoxy matrix for the ECC and DGEBA composites, respectively. (c) 2019 Society of Chemical Industry
    Thematic Areas: Química Polymers and plastics Polymer science Organic chemistry Materials chemistry Materiais Interdisciplinar Farmacia Engenharias iv Engenharias iii Engenharias ii Engenharias i Ciências biológicas ii Ciências biológicas i Ciência de alimentos Biotecnología Biodiversidade Astronomia / física
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 0959-8103
    Author's mail: angels.serra@urv.cat f.ferrando@urv.cat lluis.massagues@urv.cat
    Author identifier: 0000-0003-1387-0358 0000-0003-4450-2734 0000-0002-4197-5600
    Last page: 290
    Record's date: 2024-11-02
    Journal volume: 69
    Papper version: info:eu-repo/semantics/acceptedVersion
    Link to the original source: https://onlinelibrary.wiley.com/doi/abs/10.1002/pi.5949
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: Polymer International. 69 (3): 280-290
    APA: Isarn, Isaac; Bonnaud, Leila; Massagues, Lluis; Serra, Angels; Ferrando, Francesc (2020). Study of the synergistic effect of boron nitride and carbon nanotubes in the improvement of thermal conductivity of epoxy composites. Polymer International, 69(3), 280-290. DOI: 10.1002/pi.5949
    Article's DOI: 10.1002/pi.5949
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2020
    First page: 280
    Publication Type: Journal Publications
  • Keywords:

    Materials Chemistry,Organic Chemistry,Polymer Science,Polymers and Plastics
    Thermal conductivity
    Stability
    Platelets
    Permeability
    Nanocomposites
    Mechanical-properties
    Graphene
    Functionalization
    Epoxy resins
    Composites
    Coatings
    Carbon nanotubes
    Boron nitride
    Behavior
    Adhesive strength
    Química
    Polymers and plastics
    Polymer science
    Organic chemistry
    Materials chemistry
    Materiais
    Interdisciplinar
    Farmacia
    Engenharias iv
    Engenharias iii
    Engenharias ii
    Engenharias i
    Ciências biológicas ii
    Ciências biológicas i
    Ciência de alimentos
    Biotecnología
    Biodiversidade
    Astronomia / física
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