Standard Practice for Determining Degradation End Point in Degradable Polyethylene and Polypropylene Using a Tensile Test

Importancia y uso:

4.1 The tensile elongation property determined by this practice is of value for the characterization of degradable materials. It is possible that the tensile elongation property will vary with specimen thickness, method of preparation, speed of testing, type of grips used, and manner of measuring test extension. Consequently, where precise comparative results are desired, these factors must be carefully controlled.

4.2 It is acceptable to use the tensile elongation property to provide data for research and development and engineering design as well as quality control specifications. However, data from such tests cannot be considered significant for applications differing widely from the load-time scale of the test employed.

4.3 Materials that fail by tearing give anomalous data that cannot be compared with those from normal failure.

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

Subcomité:

D20.96

Referida por:

D5071-06R21, D5208-14R22, D6954-24, D7444-18A, D5272-08R21, D7475-20

Volúmen:

08.02

Número ICS:

83.140.01 (Rubber and plastics products in general)

Palabras clave:

brittle point; degradable plastics; plastics; polyethylene/polypropylene films/sheeting; tensile elongation;