RT Journal Article
T1 Specific rheological and electrical features of carbon nanotube dispersions in an epoxy matrix
A1 Chapartegui, M.
A1 Markaide, N.
A1 Florez, S.
A1 Elizetxea, C.
A1 Fernandez, M.
A1 Santamaría, A.
AB The rheological analysis of epoxy pre-polymer/MWCNT dispersions indicates that a physical network is formed. This is destroyed with an imposed shear, giving a viscoplastic and shear thinning behavior. Such destruction is not reflected in dynamic viscoelastic experiments, due to the very rapid recovery of the MWCNT network in the pre-polymer matrix. This responds to the observed lower electrical than rheological percolation threshold. Electrical conductivity results fulfill electron hopping/tunnelling mechanism, which implies a tube-tube distance close to 5. nm. However, rheological percolation requires nanotubes should touch each other, since no polymer chains are implied in the network.
SN 0266-3538
YR 2010
FD 2010-05
LK https://hdl.handle.net/11556/4118
UL https://hdl.handle.net/11556/4118
LA eng
NO Chapartegui , M , Markaide , N , Florez , S , Elizetxea , C , Fernandez , M & Santamaría , A 2010 , ' Specific rheological and electrical features of carbon nanotube dispersions in an epoxy matrix ' , Composites Science and Technology , vol. 70 , no. 5 , pp. 879-884 . https://doi.org/10.1016/j.compscitech.2010.02.008
DS TECNALIA Publications
RD 29 jul 2024