Muhammad, Abdul Jamal E; Joy, P A; Anantharaman, M R; Philip, Kurian(Elsevier, January , 2009)
[+]
[-]
Abstract:
Nanocomposites based on natural rubber and nano-sized nickelwere synthesized by incorporating nickel
nanoparticles in a natural rubber matrix for various loadings of the filler. Structural, morphological, magnetic
and mechanical properties of the compositeswere evaluated along with a detailed study of dielectric
properties. Itwas found that nickel particleswere uniformly distributed in the matrix without agglomeration
resulting in a magnetic nanocomposite. The elastic properties showed an improvement with increase
in filler content but breaking stress and breaking strain were found to decrease. Dielectric permittivity
was found to decrease with increase in frequency, and found to increase with increase in nickel loading.
The decrease in permittivity with temperature is attributed to the high volume expansivity of rubber at
elevated temperatures. Dielectric loss of blank rubber as well as the composites was found to increase
with temperature.