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EVS-EN ISO 307:2007/A1:2013

Plastics - Polyamides - Determination of viscosity number - Amendment 1: Corrections, and update to reference to JIS K 6920-2 (ISO 307:2007/Amd 1:2013)

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Kehtetu alates 17.06.2019
Alusdokumendid
ISO 307:2007/Amd 1:2013; EN ISO 307:2007/A1:2013
Tegevusala (ICS grupid)
83.080.20 Termoplastid
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puuduvad

Standardi ajalugu

Staatus
Kuupäev
Tüüp
Nimetus
17.06.2019
Põhitekst
04.06.2013
Muudatus
04.07.2007
Põhitekst
This International Standard specifies a method for the determination of the viscosity number of dilute solutions of polyamides in certain specified solvents. Polyamide samples must be completely soluble in the solvents mentioned. Additives such as flame-retardants and modifiers often interfere with the viscosity measurement, having an increasing effect on the viscosity number in formic acid and a decreasing effect on the viscosity number in sulfuric acid. The extent of the effect for polyamide compounds depends on the additive, the quantity of the additive, the presence of other additives and the compounding conditions.

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