BS EN ISO 1628-5:2015
Current
The latest, up-to-date edition.
Plastics. Determination of the viscosity of polymers in dilute solution using capillary viscometers Thermoplastic polyester (TP) homopolymers and copolymers
Hardcopy , PDF
English
31-03-2015
Important note : Users cannot be edited or removed once added to your Multi user PDF.
National foreword
1 Scope
2 Normative references
3 Principle
4 Solvents
5 Apparatus
6 Solvent and solution
7 Procedure
8 Expression of results
9 Test report
Annex A (informative) - Round-robin testing
Defines a method for the determination of the viscosity number (also referred to as 'reduced viscosity') of dilute solutions of thermoplastic polyesters (TPs) in certain specified solvents.
| Committee |
PRI/21
|
| DevelopmentNote |
Renumbers & supersedes BS ISO 1628-5. 2015 version incorporates corrigendum to BS ISO 1628-5. Also numbered as BS 2782-7.732E(1998). Supersedes BS 2782-7.732E(1991) and 95/125425 DC. (03/2015)
|
| DocumentType |
Standard
|
| Pages |
14
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
This part of ISO1628 specifies a method for the determination of the viscosity number (also referred to as “reduced viscosityâ€) of dilute solutions of thermoplastic polyesters (TPs) in certain specified solvents. The method is applicable to poly(ethylene terephthalate) (PET), poly(butylene terephthalate) (PBT), poly-(cyclohexylenedimethylene terephthalate) (PCT), and poly(ethylene naphthalate) (PEN), as well as to copolyesters and other polyesters, defined in ISO7792‑1 , that are soluble in one of the specified solvents under the specified conditions. The viscosity number is determined by the general procedure specified in ISO1628‑1 , observing the particular conditions specified in this part of ISO1628 . The determination of the viscosity number of a thermoplastic polyester provides a measure of the relative molecular mass of the polymer.
| Standards | Relationship |
| ISO 1628-5:1998 | Identical |
| EN ISO 1628-5:2015 | Identical |
| ISO 3451-2:1998 | Plastics Determination of ash Part 2: Poly(alkylene terephthalate) materials |
| ISO 1628-1:2009 | Plastics Determination of the viscosity of polymers in dilute solution using capillary viscometers Part 1: General principles |
| ISO 7792-1:2012 | Plastics Thermoplastic polyester (TP) moulding and extrusion materials Part 1: Designation system and basis for specifications |
| ISO 3105:1994 | Glass capillary kinematic viscometers — Specifications and operating instructions |
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.