Povučen
ISO 2930:2017 specifies a method for determining the plasticity retention index (PRI) of raw natural rubber.
The PRI is a measure of the resistance of raw natural rubber to thermal oxidation. A high resistance to thermal oxidation is shown as a high value of the index. PRI is not an absolute value and cannot give an absolute classification of plasticity number of different natural rubber after oxidation.
POVUČEN
ISO 2930:2009
POVUČEN
ISO 2930:2017
95.99
Povučen
19. 7. 2024.
OBJAVLJEN
ISO 2930:2024
Kaučuk, sirovi prirodni – Određivanje indeksa zadržavanja plastičnosti (PRI)
90.92 Odluka o izmeni ili reviziji standarda