| dc.description | In this work was studied the effect of nanoparticle incorporation in the dimensional stability of elastomer
matrix. To avoid excessive swelling and consequently dimensional instability in the films, crosslinking has
been shown to be an efficient and simple method for achieve the reducing membrane swelling and improving
mechanical stability. The elastomer used was a fluorinated type, with 70% of fluor in its composition and
commercial clay (Cloisite??) was the nanofiller used. The nancomposites with 0.5, 1 or 2% (wt%) of
nanoclay were prepared in a open two roll mill. The fluoroelastomer was a type of Viton?? (DuPont) which
has low fuel permeation and suitable for use as sealant mainly for o-ring production. The incorporation of
clay in the polymer matrix aimed to avoid excessive swelling and to maintain the material dimensional
stability. The nanocomposites were characterized by stress???strain test to evaluated elongation and tension at
break, by rheometry to analyzed maximum and minimum torques, and degree of swelling to follow
dimensional size modification of nanocomposites films. There were a decreasing of the elongation at break
and of degree of swelling values what can be correlated to an increase of crosslinking, and consequently
formation of a networking in the nanocomposites matrix in the films evaluated | |
