Standard Test Method for Open Cell Content of Rigid Cellular Plastics

Importancia y uso:

5.1 This test method is intended to be used in specifications where porosity of cellular plastics has a direct bearing on their end use. For example, for thermal insulation applications, a high percentage of closed cells is necessary to prevent escape of gases and to promote low thermal conductivity. In flotation applications, high closed-cell content generally reduces water absorption.

5.2 Before proceeding with this test method, reference shall be made to the specification of the material being tested. Any test specimen preparation, conditioning, or dimensions, or both, and testing parameters covered in the materials specification shall take precedence over those mentioned in this test method. If there are no material specifications, then the default conditions apply.

Subcomité:

D20.22

Referida por:

D7425_D7425M-13R19, D3576-20, C1847-21, C1126-19, C1848-17AR23, C1620-16R23, C0591-22, F3562-24, C1029-20, C1594-23, C1303_C1303M-23

Volúmen:

08.03

Número ICS:

83.080.01 (Plastics in general)

Palabras clave:

cell wall; cellular plastics; closed cell; open cell; pycnometer;