Plasty - Příprava PVC past pro zkušební účely - Metoda planetární míchačky (Norma k přímému použití jako ČSN).
NORMA vydána dne 1.7.2019
Označení normy: ČSN EN ISO 4612
Třídící znak: 643205
Katalogové číslo: 507408
Datum vydání normy: 1.7.2019
Počet stran: 20
Přibližná hmotnost: 60 g (0.13 liber)
Země: Česká technická norma
Kategorie: Technické normy ČSN
This document specifies two methods, A and B, for the preparation of pastes (also known as plastisols) from appropriate PVC resins, plasticizers and other ingredients using a planetary mixing process.
Both method A and method B can be used to prepare pastes of any composition. Method A (single-speed) is particularly applicable to resins prone to heat build-up during paste preparation, while method B (two-speed) might be preferred for repetitive work, e.g. for process control during resin manufacture, because of its shorter mixing time.
Such pastes can be used for a variety of test purposes, including the determination of rheological properties for resin designation and specification