Standard Test Method for Extrusion Rate of Elastomeric Sealants

Importancia y uso:

4.1 Sealants are supplied with various rheological properties ranging from pourable liquids to nonsagging pastes. Single-component sealants are supplied ready for use upon opening the container. Multicomponent sealants are supplied as a base component(s) and a curing agent separately packaged. After mixing the two or more parts, the sealant is ready for application. This test method is intended to provide a means to measure the extrusion rate spanning the range of rheological properties.

4.2 This test method also covers the option of measuring the freeze-thaw and heat stability of such sealants.

4.3 This test method provides for an option of either a metal or plastic nozzle. It is intended that the metal nozzle be used when greater precision is required, such as in ASTM specifications. The plastic nozzle may be used for general screening of sealant properties or for developmental purposes when a large number of test specimens are being tested.

4.4 This test method measures the volume of sealant extruded over a given period of time at a given pressure (kPa or psi).

Subcomité:

C24.20

Referida por:

D5893_D5893M-16R21

Volúmen:

04.07

Número ICS:

83.140.50 (Seals)

Palabras clave:

elastomeric sealant; extrusion rate; extrudability; freeze-thaw stability; latex sealant; sealant;