Standard Test Method for Carbon Black—Total and External Surface Area by Nitrogen Adsorption

Importancia y uso:

4.1 This test method is used to measure the total and external surface area of carbon blacks based on multipoint nitrogen adsorption. The NSA measurement is based on the B.E.T. theory and it includes the total surface area, inclusive of micropores, pore diameters less than 2 nm (20 Å). The external surface area, based on the statistical thickness method (STSA), is defined as the specific surface area that is accessible to rubber.

4.2 CTAB Surface Area (formerly Test Method D3765) has been withdrawn. The CTAB value may be estimated from the STSA value using Eq 1. The equation is based on a linear regression of the STSA and CTAB measured values of the SRB 5 standards.

Subcomité:

D24.21

Referida por:

D3053-23A, D4122-17R23, D6915-23, D4821-20, D3849-22, D5817-20, D8325-20, D1993-22, D1765-23B, D7849-23, D4821-20, D5817-20

Volúmen:

09.01

Número ICS:

71.060.10 (Chemical elements)

Palabras clave:

Brunauer/Emmett/Teller; carbon black, B.E.T.; nitrogen adsorption; nitrogen surface area; statistical thickness surface area; surface area by multipoint B.E.T. method, external surface area;