Standard Test Method for Outdoor Weathering Exposure of Crosslinked Polyethylene (PEX) Tubing

Importancia y uso:

5.1 During shipment, storage and installation, PEX tubing may be exposed to UV radiation prior to being shielded from further exposure after installation. The effects of UV exposure on PEX tubing is determined by use of this test method. By first exposing specimens to solar UV radiation and subsequently testing specimens for oxidative resistance or stabilizer functionality, changes as a result of solar UV radiation exposure can be evaluated. This information can be used to determine the maximum allowable total UV exposure prior to permanent shielding provided by installation.

5.2 The results of short-term exposure tests can provide an indication of relative outdoor performance, but they should not be used to predict the absolute long-term performance of a material. The results of tests conducted for less than twelve months will depend on the particular season of the year in which they begin.

Subcomité:

F17.40

Referida por:

F2905_F2905M-24A, F2968_F2968M-24, F3597-23, F0876-24B, F3288_F3288M-24, F2929-25, F2788_F2788M-24, F3378_F3378M-22, F3253-25, F3534_F3534M-22

Volúmen:

08.04

Número ICS:

23.040.20 (Plastic pipes)

Palabras clave:

crosslinked polyethylene; PEX; sunlight; tubing; UV exposure; weathering;