Thermoresistive Properties of Graphite Platelet Films Supported by Different Substrates

Autor: Mariano Palomba 1, Gianfranco Carotenuto 1, Angela Longo 1, Andrea Sorrentino 1, Antonio Di Bartolomeo 2, 3, Laura Iemmo 2, Francesca Urban 2, Filippo Giubileo 3, Gianni Barucca 4, Massimo Rovere 5, Alberto Tagliaferro 5, Giuseppina Ambrosone 6 and Ubaldo Coscia 6, 7
Přispěvatelé: Palomba, Mariano, Carotenuto, Gianfranco, Longo, Angela, Sorrentino, Andrea, Di Bartolomeo, Antonio, Iemmo, Laura, Urban, Francesca, Giubileo, Filippo, Barucca, Gianni, Rovere, Massimo, Tagliaferro, Alberto, Ambrosone, Giuseppina, Coscia, Ubaldo
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Materials science
LDPE
thermal expansion coecient
graphite platelet coatings
Substrate (electronics)
lcsh:Technology
Article
law.invention
symbols.namesake
chemistry.chemical_compound
law
thermal expansion coeffcient
General Materials Science
Graphite
Composite material
graphite platelet coating
lcsh:Microscopy
Graphite platelet coatings
Thermal expansion coefficient
Thermoresistive properties
lcsh:QC120-168.85
lcsh:QH201-278.5
lcsh:T
Graphene
Polyethylene
thermoresistive properties
Low-density polyethylene
chemistry
lcsh:TA1-2040
Transmission electron microscopy
thermal expansion coefficient
symbols
lcsh:Descriptive and experimental mechanics
lcsh:Electrical engineering. Electronics. Nuclear engineering
lcsh:Engineering (General). Civil engineering (General)
Raman spectroscopy
lcsh:TK1-9971
Temperature coefficient
Zdroj: Materials
Volume 12
Issue 21
Materials (Basel) 12 (2019). doi:10.3390/ma12213638
info:cnr-pdr/source/autori:Mariano Palomba 1, Gianfranco Carotenuto 1, Angela Longo 1,*, Andrea Sorrentino 1, Antonio Di Bartolomeo 2,3,*, Laura Iemmo 2,3, Francesca Urban 2,3, Filippo Giubileo 3, Gianni Barucca 4, Massimo Rovere 5, Alberto Tagliaferro 5, Giuseppina Ambrosone 6 and Ubaldo Coscia 6,7/titolo:Thermoresistive Properties of Graphite Platelet Films Supported by Different Substrates/doi:10.3390%2Fma12213638/rivista:Materials (Basel)/anno:2019/pagina_da:/pagina_a:/intervallo_pagine:/volume:12
Materials, Vol 12, Iss 21, p 3638 (2019)
ISSN: 1996-1944
DOI: 10.3390/ma12213638
Popis: Large-area graphitic films, produced by an advantageous technique based on spraying a graphite lacquer on glass and low-density polyethylene (LDPE) substrates were studied for their thermoresistive applications. The spray technique uniformly covered the surface of the substrate by graphite platelet (GP) unities, which have a tendency to align parallel to the interfacial plane. Transmission electron microscopy analysis showed that the deposited films were composed of overlapped graphite platelets of different thickness, ranging from a few tens to hundreds of graphene layers, and Raman measurements provided evidence for a good graphitic quality of the material. The GP films deposited on glass and LDPE substrates exhibited different thermoresistive properties during cooling&ndash
heating cycles in the &minus
40 to +40 °
C range. Indeed, negative values of the temperature coefficient of resistance, ranging from &minus
4 ×
10&minus
4 to &minus
7 ×
4 °
C&minus
1 have been observed on glass substrates, while positive values varying between 4 ×
3 and 8 ×
3 °
1 were measured when the films were supported by LDPE. These behaviors were attributed to the different thermal expansion coefficients of the substrates. The appreciable thermoresistive properties of the graphite platelet films on LDPE could be useful for plastic electronic applications.
Databáze: OpenAIRE
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