Standard Test Method for Absorption Coefficient of Ethylene Polymer Material Pigmented with Carbon Black

Importancia y uso:

4.1 The absorption coefficient of polyolefin polymer pigmented with carbon black is useful to judge the degree and uniformity of dispersion of the pigment, and the adequacy of the quantitative level of pigment addition. These factors are used to predict the performance of the polymer material in response to prolonged exposure to ultraviolet light as evidenced by minimal changes in specific properties.

Note 1: This test method was developed to evaluate ethylene polymer materials pigmented with small particle size carbon blacks suitable for UV protection. It is not known how accurate and reproducible the test would be with larger (35 nm or greater) particle size blacks. However, for larger particle sizes of carbon black, such as furnace black at 275 nm, when there is at least 5 or higher percent of carbon black, the material pigmented as such has suitable UV protection.

Subcomité:

D09.07

Referida por:

D2308-07R20E01, D3849-22, D1248-16, D1351-20

Volúmen:

10.02

Número ICS:

83.080.20 (Thermoplastic materials)

Palabras clave:

absorption coefficient; carbon black; ethylene polymer;