01/121388 DC : DRAFT MARCH 2001
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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ISO 307 PLASTICS - POLYAMIDES - DETERMINATION OF VISCOSITY NUMBER
01-09-2003
23-11-2012
Foreword
1 Scope
2 Normative references
3 Definitions
4 Principle
5 Reagents and materials
6 Apparatus
7 Preparation of test samples
7.1 General
7.2 Samples with extractable ingredients
7.3 Samples with auxiliaries (non-hydrolyzable
and without ash) that are insoluble in hydrochloric
acid, e.g. polymer modifiers, carbon fibres and certain
flame-retardants
7.4 Samples with auxiliaries that are soluble in dilute
hydrochloric acid and/or cannot be determined from the
ash owing to oxide formation, e.g. carbonates, metal
powders and certain pigments
8 Calculation of mass of test portion
9 Selection of solvent
10 Procedure
10.1 Cleaning of viscometer
10.2 Preparation of test solution
10.3 Measurements of flow times
11 Expression of results
12 Repeatability and reproducibility
13 Interconversion of the viscosity numbers determined in
different solvents and Interconversion of the viscosity
numbers determined in 96 % sulfuric acid and relative
viscosities determined in accordance with ASTM D 789
13.1 Viscosity numbers in 96 % (m/m) sulfuric acid and 90
% (m/m) formic acid, respectively
13.2 Viscosity numbers in 96 % (m/m) sulfuric acid and
m-cresol, respectively
14 Test report
Annex A (normative) Determination of the concentration of
commercial sulfuric acid (95 % to 97 %) and adjustment
to 96 %
A.1 General
A.2 Apparatus and reagents
A.3 Procedure
A.4 Expression of results
A.5 Adjustment of sulfuric acid and concentration
| Committee |
PRI/82
|
| DocumentType |
Draft
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy |
| ISO 1628-1:2009 | Plastics Determination of the viscosity of polymers in dilute solution using capillary viscometers Part 1: General principles |
| ISO 1874-1:2010 | Plastics Polyamide (PA) moulding and extrusion materials Part 1: Designation system and basis for specification |
| ISO 6427:2013 | Plastics — Determination of matter extractable by organic solvents (conventional methods) |
| ISO 1042:1998 | Laboratory glassware — One-mark volumetric flasks |
| ISO 472:2013 | Plastics — Vocabulary |
| ISO 15512:2016 | Plastics Determination of water content |
| ISO 3105:1994 | Glass capillary kinematic viscometers — Specifications and operating instructions |
| ISO 3451-4:1998 | Plastics — Determination of ash — Part 4: Polyamides |
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