Premium
Manufacturing and properties of biomimetic graphite nanoplatelets foils
Author(s) -
Ricciardi Maria R.,
Cristiano Francesco,
Bertocchi Francesco,
Martone Alfonso,
Giordano Michele
Publication year - 2019
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.25200
Subject(s) - materials science , composite material , composite number , epoxy , graphite , scanning electron microscope , pressing , fabrication , ultimate tensile strength , medicine , alternative medicine , pathology
Among the various architectures developed for composite materials, nanolaminated architecture is a promising candidate for the design of new materials for structural and functional applications. Nanolaminates mimic the natural occurring architecture of nacre and it is formed by highly oriented nanolaminae connected by a very low amount of matrix. Due to their architecture, inherently impermeable to fluid, such kind of materials is difficult to manufacture unless using layer‐by‐layer processes. Here, we describe the fabrication of films with nanolaminated architecture containing very high content (>80% w/w) of graphite nanoplatelets (GNPs) within an uncured epoxy matrix (prepregs), suitable for the conventional prepregs manufacturing technologies: film stacking and consolidation under temperature under pressure. Nanolaminated prepregs have been manufactured through the deposition of a paste of GNPs in epoxy enriched acetone solvent. Mainly, scanning electron microscopy has investigated the nanolaminated architecture of the prepregs. Stress–strain behavior of nanolaminated prepregs has been investigated as a function of their composition and consolidation pressure. Finally, a laminate made of six nanolaminated prepregs (about 0.3 mm thick) has been manufactured by hot pressing revealing interesting mechanical properties: a tensile modulus of 30 GPa and a damping coefficient, tan δ, of 0.03. POLYM. ENG. SCI., 59:2443–2448, 2019. © 2019 Society of Plastics Engineers