This study represents a cost-effective method to advance the physical and mechanical properties of carbon fiber-reinforced polymer (CFRP) prepreg composite materials,
where electrospun multiwalled carbon nanotubes (CNTs)/epoxy nanofibers fabricated and
deposited in between the layers of traditional CFRP prepreg composite. CNT-aligned epoxy
nanofibers were uniformly formed by an optimized electrospinning method. Electrospinning
is considered one of the most flexible, low-cost, and globally recognized methods for generating continuous filaments from submicron to tens of nanometer diameter. Nanofilaments
were incorporated precisely on the layers of prepreg to accomplish increased adhesion and
interfacial bonding, leading to increased strength and enhancements in more mechanical
properties. As a result, the modulus of the epoxy and CNT/epoxy nanofibers were revealed
to be 3.24 GPa and 4.84 GPa, leading to 49% enhancement. Furthermore, interlaminar shear
strength (ILSS) and fatigue performance at high-stress regimes improved by 29% and 27%,
respectively. Barely visible impact damage (BVID) energy improved considerably by up to
45%. The thermal and electrical conductivities were also increased considerably because
of the highly conductive CNT networks present in between the CFRP layers. The newly
introduced approach was able to deposit high content uniform CNTs at the ply interface of
prepregs to enhance the CFRP properties, that has not been achieved in the past because
of the randomly oriented high viscosity CNTs in epoxy resins.
| Identifer | oai:union.ndltd.org:purdue.edu/oai:figshare.com:article/14501877 |
| Date | 10 May 2021 |
| Creators | Vidya Balu Wable (10716303) |
| Source Sets | Purdue University |
| Detected Language | English |
| Type | Text, Thesis |
| Rights | CC BY 4.0 |
| Relation | https://figshare.com/articles/thesis/INTERFACIAL_TOUGHENING_OF_CARBON_FIBER_REINFORCED_POLYMER_CFRP_MATRIX_COMPOSITES_USING_MWCNTS_EPOXY_NANOFIBER_SCAFFOLDS/14501877 |
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