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Norm
ÖNORM EN ISO 307
Issue date: 2013 08 15
Plastics - Polyamides - Determination of viscosity number (ISO 307:2007 + Amd 1:2013)
This International Standard specifies a method for the determination of the viscosity number of dilute solutions
of polyamides in certain specified solvents.
Polyamide ...
Withdrawn: 2019 11 01
Publisher:
Austrian Standards International
Format:
Digital | 41 Pages
Language:
German
| English
| Download GER/ENG
Currently valid:
Optionally co-design standards:
ICS
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.
For pure polyamides or polyamides containing additives that do not interfere with the viscosity measurement,
the determination of the viscosity number of a polyamide provides a measure of the molecular mass of the
polymer. The viscosity number of pure polyamides or polyamides which contain additives that do not interfere
with the viscosity measurement can be converted from one solvent to another.
The viscosity number of polyamides containing additives that do interfere with the viscosity measurement is
specific to the solvent used and the material composition. In this case, the measured viscosity number cannot
be converted from one solvent to another.
The method is applicable to the polyamides designated PA 46, PA 6, PA 66, PA 69, PA 610, PA 612, PA 11,
PA 12, PA 6T/66, PA 6I/6T, PA 6T/6I/66, PA 6T/6I, PA 6I/6T/66 and PA MXD6 as defined in ISO 1874-1, as
well as to copolyamides, compounds of polyamides and other polyamides that are soluble in one of the
specified solvents under the specified conditions.
The method is not applicable to polyamides produced by anionic polymerization of lactams or produced with
cross-linking agents; such polyamides are normally insoluble in the specified solvents.
The viscosity number is determined by the general procedure specified in ISO 1628-1, observing the particular
conditions specified in this International Standard.
ÖNORM EN ISO 307
2019 11 01
Plastics - Polyamides - Determination of viscosity number (ISO 307:2019)
Norm
ÖNORM EN ISO 307
2013 08 15
Plastics - Polyamides - Determination of viscosity number (ISO 307:2007 + Amd 1:2013)
Norm
↖
ÖNORM EN ISO 307
2007 09 01
Plastics - Polyamides - Determination of viscosity number (ISO 307:2007)
Norm
ÖNORM EN ISO 307
2003 12 01
Plastics - Polyamides - Determination of viscosity number (ISO 307:2003)
Norm
ÖNORM EN ISO 307
1998 02 01
Plastics - Polyamides - Determination of viscosity number (ISO 307:1994)
Norm
Norm
Issue date :
2009 01 28
Plastics — Determination of the viscosity of polymers in dilute solution using capillary viscometers — Part 1: General principles
Norm
Issue date :
2010 11 08
Plastics — Polyamide (PA) moulding and extrusion materials — Part 1: Designation system and basis for specification
Norm
Issue date :
1994 12 01
Glass capillary kinematic viscometers — Specifications and operating instructions
Norm
Issue date :
2007
Standard Test Methods for Determination of Solution Viscosities of Polyamide (PA)
Norm
Issue date :
2021 02 26
Plastics — Determination of the viscosity of polymers in dilute solution using capillary viscometers — Part 1: General principles
Norm
Issue date :
2010 11 08
Plastics — Polyamide (PA) moulding and extrusion materials — Part 1: Designation system and basis for specification
Norm
Issue date :
2019 08 01
Standard Test Method for Determination of Relative Viscosity of Concentrated Polyamide (PA) Solutions
Norm
Issue date :
2019 11 01
Plastics - Polyamides - Determination of viscosity number (ISO 307:2019)