Reference number
ISO 305:2019
International Standard
ISO 305:2019
Plastics — Determination of thermal stability of poly(vinyl chloride), related chlorine-containing homopolymers and copolymers and their compounds — Discoloration method
Edition 3
2019-05
Preview
ISO 305:2019
70415
No disponible en español
Publicado (Edición 3, 2019)
Esta publicación se revisó y confirmó por última vez en 2024. Por lo tanto, esta versión es la actual.

ISO 305:2019

ISO 305:2019
70415
Idioma
Formato
CHF 42
Convertir Franco suizo (CHF) a tu moneda

Resumen

This document specifies two methods for the determination of the thermal stability of products and compounds based on vinyl chloride homopolymers and copolymers (referred to simply as PVC in the following text) by the extent of the discoloration that occurs when they are exposed, in the form of sheet, to elevated temperatures. The two methods are:

— Method A: Oil-bath method;

— Method B: Oven method.

These methods are particularly applicable to the determination of the resistance of PVC to degradation by heat, as assessed by the change in colour after different times of heating under standardized conditions. The results are comparative only, and can be unsatisfactory when coloured PVC materials are tested.

The stability times given by the two methods might not be similar and cannot be used for direct-comparison purposes.

Informaciones generales

  •  : Publicado
     : 2019-05
    : Norma Internacional confirmada [90.93]
  •  : 3
     : 6
  • ISO/TC 61/SC 9
    83.080.20 
  • RSS actualizaciones

¿Tiene alguna duda?

Consulte nuestras Ayuda y asistencia