Standard Test Methods for Polyurethane Raw Materials: Determination of Viscosity of Crude or Modified Isocyanates

Importancia y uso:

4.1 These test methods can be used for research, quality control, or specification tests to characterize isocyanates used in polyurethane products.

4.2 Viscosity measures the resistance of a fluid to uniform continuous flow without turbulence or other forces.

4.3 Some isocyanates exhibit non-Newtonian behavior under certain conditions. Whenever possible, generate results for comparison under the same conditions, that is, the same spindle/speed combination for rotational viscosity and the same tube size for kinematic viscosity.

Subcomité:

D20.22

Volúmen:

08.02

Número ICS:

83.040.30 (Auxiliary materials and additives for plastics), 83.080.20 (Thermoplastic materials)

Palabras clave:

dynamic viscosity; isocyanates; kinematic viscosity; polyurethane raw materials; rotational viscosity; viscosity;