Effect of clay incorporation in the dimensional stability of FKM nanocomposite
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2016
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BRAZILIAN CONFERENCE ON COMPOSITE MATERIALS, 3rd
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In this work was studied the effect of nanoparticle incorporation in the dimensional stability of elastomer matrix. 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.
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ZEN, HELOISA A.; LUGAO, ADEMAR B. Effect of clay incorporation in the dimensional stability of FKM nanocomposite. In: BRAZILIAN CONFERENCE ON COMPOSITE MATERIALS, 3rd, August 28-31, 2016, Gramado, RS. Proceedings... Disponível em: http://repositorio.ipen.br/handle/123456789/26739. Acesso em: 19 Apr 2024.
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