Articles producció científica> Enginyeria Mecànica

Electro-responsive shape-memory composites obtained via dual-curing processing

  • Identification data

    Identifier: imarina:9245555
    Authors:
    Russo CRamírez JLFernández-Francos XDe la Flor S
    Abstract:
    In 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 conductive silver-ink track printed on Kapton® substrate, was assembled to the SMP, taking advantage of the dual-curing processing. The shape-memory effect (SME) was activated by the heat dissipated by the Joule effect in the conductive track. Boron nitride agglomerates were dispersed in the thiol-acrylate-epoxy layers to increase thermal conductivity and achieve faster shape-recovery. A thermoelectric control unit was developed to control the shape recovery of the electro-responsive actuators and provide different activation strategies. The electrically activated SME was investigated and compared to a traditional SME based on an external heating source given by the dynamic mechanical analyzer (DMA) apparatus. Electro-responsive actuators were found extremely faster than the conventional SMPs based on external heating. The fastest recovery was obtained by the 15% boron nitride actuator, which recovered the 100% of the original shape in only 8 s. The thermoelectric controlling device provided an optimal control of the shape recovery speed based on the pulse width modulation of the heating current under the application of a low voltage (5 V).
  • Others:

    Author, as appears in the article.: Russo C; Ramírez JL; Fernández-Francos X; De la Flor S
    Department: Enginyeria Mecànica
    URV's Author/s: De la Flor Lopez, Silvia / Ramírez Falo, José Luis / Russo, Claudio
    Keywords: Thermal-conductivity Shape-memory polymers Electro-responsive actuators Dual-curing Conductive heater systems shape-memory polymers nanofiber electro-responsive actuators efficiency dual-curing carbon nanotube boron-nitride actuation
    Abstract: In 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 conductive silver-ink track printed on Kapton® substrate, was assembled to the SMP, taking advantage of the dual-curing processing. The shape-memory effect (SME) was activated by the heat dissipated by the Joule effect in the conductive track. Boron nitride agglomerates were dispersed in the thiol-acrylate-epoxy layers to increase thermal conductivity and achieve faster shape-recovery. A thermoelectric control unit was developed to control the shape recovery of the electro-responsive actuators and provide different activation strategies. The electrically activated SME was investigated and compared to a traditional SME based on an external heating source given by the dynamic mechanical analyzer (DMA) apparatus. Electro-responsive actuators were found extremely faster than the conventional SMPs based on external heating. The fastest recovery was obtained by the 15% boron nitride actuator, which recovered the 100% of the original shape in only 8 s. The thermoelectric controlling device provided an optimal control of the shape recovery speed based on the pulse width modulation of the heating current under the application of a low voltage (5 V).
    Thematic Areas: Química Polymers and plastics Polymer science Materiais Interdisciplinar Engenharias ii Ciência de alimentos Biotecnología Astronomia / física
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    Author's mail: joseluis.ramirez@urv.cat silvia.delaflor@urv.cat
    Author identifier: 0000-0001-8231-4019 0000-0002-6851-1371
    Record's date: 2024-09-07
    Papper version: info:eu-repo/semantics/publishedVersion
    Link to the original source: https://onlinelibrary.wiley.com/doi/10.1002/pat.5634?af=R
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: Polymers For Advanced Technologies. 33 (5): 1715-1726
    APA: Russo C; Ramírez JL; Fernández-Francos X; De la Flor S (2022). Electro-responsive shape-memory composites obtained via dual-curing processing. Polymers For Advanced Technologies, 33(5), 1715-1726. DOI: 10.1002/pat.5634
    Article's DOI: 10.1002/pat.5634
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2022
    Publication Type: Journal Publications
  • Keywords:

    Polymer Science,Polymers and Plastics
    Thermal-conductivity
    Shape-memory polymers
    Electro-responsive actuators
    Dual-curing
    Conductive heater
    systems
    shape-memory polymers
    nanofiber
    electro-responsive actuators
    efficiency
    dual-curing
    carbon nanotube
    boron-nitride
    actuation
    Química
    Polymers and plastics
    Polymer science
    Materiais
    Interdisciplinar
    Engenharias ii
    Ciência de alimentos
    Biotecnología
    Astronomia / física
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