1.1This test method covers a procedure to measure a carbon black structure property known as Void Volume at geometric mean pressure. Compressed void volumes are obtained by measuring the compressed volume of a weighed sample in a cylindrical chamber as a function of pressure exerted by a movable piston. A profile of void volume as a function of pressure provides a means to assess carbon black structure at varying levels of density and aggregate reduction.
To enable the carbon black and rubber industries to utilize common void volume measurement parameters to measure carbon black primary structure. Typical users are quality laboratories.
Keywords13.1Structure, apparent volume; theoretical volume; void volume, geometric mean pressure
The title and scope are in draft form and are under development within this ASTM Committee.Back to Top
Withdrawn From Balloting
Ballot Item Approved as D7854-2013 and Pending Publication