TY - CHAP
T1 - Piezoresistive Behavior of Carbon/Carbon Composite Based on Expanded Graphite and Polyfurfuryl Alcohol
AU - Filipowska, Anna
AU - Majewska, Justyna
AU - Marzec-Przyszlak, Aleksandra
AU - Kania, Patryk
AU - Kowal, Bartosz
AU - Nowotarska, Kamila
AU - Hüpsch, Michał
AU - Antonowicz, Magdalena
AU - Filipowski, Wojciech
N1 - Publisher Copyright:
© The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.
PY - 2024
Y1 - 2024
N2 - The aim of the study was to investigate the effect of polyfurfuryl alcohol (PFA) and the carbonization process on the mechanical properties of a carbon-carbon composite based on expanded graphite. Four types of samples were obtained and tested for their mechanical features: GE -compressed expanded graphite not subjected to any modification; GEFA - compressed expanded graphite mixed with polyfurfuryl alcohol subjected to the cross-linking process; GE8000 - compressed expanded graphite subjected to the carbonization process at the temperature of 800 ℃; GEFA800 - compressed expanded graphite mixed with polyfurfuryl alcohol subjected to the carbonization process at the temperature of 800 ℃. This paper presents preliminary results of the characterization of the true density, bulk porosity, elasticity and resistivity of the studied composites. Our results indicate that changes in the resistivity of the obtained composites depend on the pressure force. The electrical resistivity decreases with time under mechanical stress. Samples with the small amount of PFA added and subjected to the carbonization process are characterized by the lowest values of resistance, the highest values of elastic modulus E, but lower true density and bulk porosity. Small amount of PFA allows to change the properties of the composite samples, what can be potentially applied to the enzyme support obtaining.
AB - The aim of the study was to investigate the effect of polyfurfuryl alcohol (PFA) and the carbonization process on the mechanical properties of a carbon-carbon composite based on expanded graphite. Four types of samples were obtained and tested for their mechanical features: GE -compressed expanded graphite not subjected to any modification; GEFA - compressed expanded graphite mixed with polyfurfuryl alcohol subjected to the cross-linking process; GE8000 - compressed expanded graphite subjected to the carbonization process at the temperature of 800 ℃; GEFA800 - compressed expanded graphite mixed with polyfurfuryl alcohol subjected to the carbonization process at the temperature of 800 ℃. This paper presents preliminary results of the characterization of the true density, bulk porosity, elasticity and resistivity of the studied composites. Our results indicate that changes in the resistivity of the obtained composites depend on the pressure force. The electrical resistivity decreases with time under mechanical stress. Samples with the small amount of PFA added and subjected to the carbonization process are characterized by the lowest values of resistance, the highest values of elastic modulus E, but lower true density and bulk porosity. Small amount of PFA allows to change the properties of the composite samples, what can be potentially applied to the enzyme support obtaining.
KW - Carbon/carbon composites
KW - Expanded graphite
KW - Piezoresistivity
KW - Polyfurfuryl alcohol
KW - Stress
UR - https://www.scopus.com/pages/publications/85186118969
U2 - 10.1007/978-3-031-52382-3_12
DO - 10.1007/978-3-031-52382-3_12
M3 - Chapter
AN - SCOPUS:85186118969
T3 - Lecture Notes in Networks and Systems
SP - 105
EP - 112
BT - Lecture Notes in Networks and Systems
PB - Springer Science and Business Media Deutschland GmbH
ER -