BS 7485:1991

Superseded

View Superseded by

Method of specifying aqueous dispersions of polytetrafluoroethylene (PTFE) materials

Available format(s)

Hardcopy , PDF

Superseded date

15-04-1996

Language(s)

English

Published date

31-01-1992

Publisher

British Standards Institution

Committees responsible
Foreword
Method
0. Introduction
1. Scope
2. Definitions
3. Designation
4. Properties and tolerances
Appendices
A. Method for the determination of the polytetra-
     fluoroethylene and surfactant contents of aqueous
     dispersions of polytetrafluoroethylene materials
B. Method for the determination of the density of
     aqueous dispersions of polytetrafluoroethylene
     materials
C. Method for the determination of the pH of aqueous
     dispersions of polytetrafluoroethylene materials
D. Method for the determination of the viscosity of
     aqueous dispersions of polytetrafluoroethylene
     materials
E. Information to be declared with the product
Tables

1. Minimum requirements
2. Additional properties

Describes for the first time a system of specifying aqueous polytetrafluoroethylene dispersions.

Committee	PRI/82
DocumentType	Standard
Pages	12
PublisherName	British Standards Institution
Status	Superseded
SupersededBy	BS EN ISO 12086-2:2006 BS ISO 12086-1 : 1995 AMD 10638 BS EN ISO 12086-1:2006 BS ISO 12086-2 : 2001 AMD 10637 BS EN ISO 12086-1:2001 BS EN ISO 12086-2:2001

ISO 2555:1989	Plastics Resins in the liquid state or as emulsions or dispersions Determination of apparent viscosity by the Brookfield Test method
ISO 1148:1980	Plastics — Aqueous dispersions of polymers and copolymers — Determination of pH
BS 2782-7 Method 730B:1978	Methods of testing plastics. Rheological properties Determination of the viscosity of polymers in the liquid, emulsified or dispersed state using a rotational viscometer working at a defined shear rate
BS 1647-2:1984	pH measurement Specification for reference value standard solutions and operational reference standard solutions