Active Standard ASTM D1823 | Developed by Subcommittee: D20.15
Book of Standards Volume: 08.01
Historical (view previous versions of standard)
Significance and Use
The suitability of a dispersion resin for any given application is dependent upon its viscosity characteristics.
The extrusion viscosity defines the flow behavior of a plastisol or organosol under high shear. This viscosity relates to the conditions encountered in mixing, pumping, knife coating, roller coating, and spraying processes.
1.1 This test method covers the measurement of plastisol and organosol viscosity at high shear rates by means of an extrusion viscometer.
1.2 Apparent viscosity at low shear rates is covered in Test Method D1824.
1.3 The values stated in SI units are to be regarded as standard. The values in parentheses are given for information only.
1.4 This standard does not purport to address the safety concerns associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Note 1—This test method resembles ISO 4575-1985 in title only. The content is significantly different.
Note 1—This test method resembles ISO 4575-1985 in title only. The content is significantly different.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ISO StandardISO 4575-1985 Poly Vinyl Chloride Pastes--Determination of Apparent Viscosity Using the Severs Rheometer Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
D1475 Test Method For Density of Liquid Coatings, Inks, and Related Products
D1755 Specification for Poly(Vinyl Chloride) Resins
D1824 Test Method for Apparent Viscosity of Plastisols and Organosols at Low Shear Rates
E1 Specification for ASTM Liquid-in-Glass Thermometers
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
ICS Number Code 83.080.01 (Plast in general)