ISO 305:2019

Plastics — Determination of thermal stability of poly(vinyl chloride), related chlorine-containing homopolymers and copolymers and their compounds — Discoloration method

Datum objavljivanja: 15. 5. 2019.

Опште информације

Trenutna faza: 90.93 Effective date: 7. 10. 2024.

Inicijator: ISO

Pripada: ISO/TC 61/SC 9

Vrsta: Međunarodni standard

ICS: 83.080.20

Jezik: engleski francuski

Kupovina

Status: Objavljen

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Apstrakt

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.

Životni ciklus

PRETHODNO

POVUČEN
ISO 305:1990

TRENUTNO

OBJAVLJEN
ISO 305:2019
90.93 Odluka o potvrđivanju standarda
7. 10. 2024.

Nacionalna preuzimanja

SRPS EN ISO 305:2019

ISS

Plastične mase – Određivanje termičke stabilnosti poli(vinil-hlorida) i sličnih homopolimera i kopolimera koji sadrže hlor, kao i njihovih jedinjenja – Metoda obezbojavanja

60.60 Standard objavljen

G061 Saznaj više