BS EN ISO 307 - PLASTICS - POLYAMIDES - DETERMINATION OF VISCOSITY NUMBER

Available format(s)

Hardcopy , PDF

Language(s)

English

Publisher

British Standards Institution

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents and materials
6 Apparatus
7 Preparation of test samples
8 Calculation of test portion
9 Selection of solvent
10 Procedure
11 Expression of results
12 Repeatability and reproducibility
13 Relationship between the viscosity number determined
   in 96% (by mass) sulfuric acid solution and the viscosity
   determined in various solvents
14 Test report
Annex A (informative) - Determination of the concentration of
        commercial sulfuric acid (95% to 98%) and adjustment
        to 96% by titration
Annex B (informative) - Determination of the concentration of
        sulfuric acid (95% to 98%) and adjustment to 96% by
        flow time measurement in a small capillary viscometer
Annex C (informative) - Determination of the concentration of
        commercial formic acid and adjustment to 90% by titration
Annex D (informative) - Determination of the concentration of
        commercial formic acid and adjustment to 90% by
        density measurement
Annex E (informative) - Relationship between the viscosity
        number determined in 96% (by mass) sulfuric acid
        solution and the viscosity determined in various
        solvents acid, 90% (by mass) formic acid and
        m-cresol
Bibliography

BS EN ISO 307.

Committee	PRI/82
DocumentType	Draft
Pages	42
PublisherName	British Standards Institution
Status	Current

ISO 1628-1:2009	Plastics Determination of the viscosity of polymers in dilute solution using capillary viscometers Part 1: General principles
ISO 1042:1998	Laboratory glassware One-mark volumetric flasks
ISO 16396-1:2015	Plastics — Polyamide (PA) moulding and extrusion materials — Part 1: Designation system, marking of products and basis for specifications
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