Κατεύθυνση Τεχνολογίας Ολοκληρωμένων Κυκλωμάτων
Πληροφορική

2017-10-31

2017

Kapetanou Dimitra

Παπαϊωάννου Γεώργιος, Καθηγητής, Τμήμα Φυσικής, ΕΚΠΑ
Αραπογιάννη Αγγελική, Καθηγητής, Τμήμα Πληροφορικής, ΕΚΠΑ
Γαρδέλης Σπυρίδων, Αναπλ. Καθηγητής, Τμήμα Φυσικής, ΕΚΠΑ

Μελέτη Ηλεκτρικών Ιδιοτήτων Νανοσύνθετων Υλικών Εποξικής ρητίνης/Νανοσωλήνων Άνθρακα

Greek

Electrical Characterization of Nanocomposite of epoxy/CNTs

This master thesis deals with the electrical characterization of nanocomposite materials with epoxy matrix. One special feature is tha the samples we have studied, are made using the Masterbatch method. The manufacture of the nanocomposite material by this method, firstly requires to product a large quantitation’s nanocomposite and in the next step the dilution of this with a clean polymer material, so as to acieve the desired final quantitation.
We manufactured 5 samples with various percentage of carnon nanotubes: 0%, 0.3%, 0.5%, 0.7%, 1% w/w CNTs/epoxy. To study these samples we have taken the characteristic curves of current-voltage, changing in some cases the temperatures. The purpose of this research is to find the percolation threshold (pc) for epoxy resin-based nanocomposite materials.
After the study and the comparison of all current-voltage characteristic curves, we concluded that the sample with 0.7% w/w CNTs/epoxy has the highest electrical conductivity, so we believe that the percolation threshold is close enough to 0.7%. Also, we noticed that samples with smaller percentage of CNTs than 0.7% (p