TY  - BOOK
AU  - Hunyek A
AU  - 
AU  - Sirisathitkul C
TI  - Magnetic and dielectric properties of natural rubber and polyurethane composites filled with cobalt ferrite
PY  - 2013///
PB  - Plastics, Rubber and Composites Macro Molecular Engineering
KW  - Cobalt ferrite
KW  - Electrical permittivity
KW  - Hysteresis loops
KW  - Magnetic permeability
KW  - Natural rubber
N2  - Cobalt ferrite (CoFe2O4) powders synthesised by sol-gel techniques were incorporated into natural rubber (NR) and polyurethane (PU) by two-roll milling at different loadings from 0 to 45 phr. In either NR or PU composites, the magnetisations were proportional to the CoFe2O4 loading, but the coercive field remained rather insensitive to the loading. The frequency response from 1 MHz revealed that the real part of the magnetic permeability increased significantly only in the case of 45 phr CoFe2O4, while the imaginary part was modest in both NR and PU composites, and both parts at 100 MHz had linear variations with the loading, in agreement with Wagners equation
ER  -