NF EN ISO 1628-5

Plastics - Determination of the viscosity of polymers in dilute solution using capillary viscometers - Part 5 : thermoplastic polyester (TP) homopolymers and copolymers

Le présent document prescrit une méthode pour la détermination de l'indice de viscosité (également appelé " viscosité réduite ") des polyesters thermoplastiques (TP) lorsqu'ils sont mis en solution diluée dans certains solvants. La méthode est applicable au polyéthylène téréphtalate (PET), polybutylène téréphtalate (PBT), polycyclohexylènediméthylène téréphtalate (PCT) et polyéthylène naphtalate (PEN), ainsi qu'aux copolyesters et autres polyesters définis dans l'ISO 7792?1 qui sont solubles dans l'un des solvants spécifiés dans les conditions prescrites. L'indice de viscosité est déterminé selon la méthode générale spécifiée dans l'ISO 1628-1 en respectant les conditions particulières prescrites dans l'ISO 1628-5.

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