Carbon nanotube enhanced shape memory epoxy for improved mechanical properties and electroactive shape recovery
نویسندگان
چکیده
This paper focuses on the processing, fabrication and characterization of a novel carbon nanotube (CNT) based electroactive shape memory epoxy nanocomposite with significant improvements in static dynamic mechanical properties. Electro-active specimens have been fabricated by soaking CNT membranes (buckypaper) polymer (SMEP) through specialized process developed in-house that results high wt. fraction 30 wt%. The approach leads to drastic improvement performance due effective interfacial interaction between SMEP CNTs at nanoscale. is accomplished as thoroughly permeates buckypaper nano- micro-pores, owing microstructure-induced capillary action. quasistatic properties baseline using demonstrated correlated microstructure scanning electron microscopy characterization. For buckypaper-enhanced (CNT-SMEP), elastic modulus temperature extremes 20 50?°C was found be 52% (1810 MPa compared 2740 MPa) 514% (7.6 46.7 MPa), respectively. Furthermore, measurements, increase storage range 30-90?°C 60% 82%, In addition, recovery response for this material system characterized stress-free electrical actuation CNT-SMEP 12V DC supply well stress control testing.
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ژورنال
عنوان ژورنال: Polymer
سال: 2021
ISSN: ['1873-2291', '0032-3861']
DOI: https://doi.org/10.1016/j.polymer.2020.123158