Standard Practice for Determining Degradation End Point in Degradable Polyethylene and Polypropylene Using a Tensile Test
|Publication Date:||10 April 1998|
|ICS Code (Thermoplastic materials):||83.080.20|
This practice covers the determination of a degradationend point
(a brittle point) for degradable polyethylene/
polypropylene films and sheeting less than 1.0 mm (0.04 in.) thick.
This practice is not intended for determination of the rate of
degree of degradation of a polyethylene/polypro
Tensile properties of plastics 1.0 mm (0.04 in.) or greater in thickness shall be determined in accordance with Test Method D638.
Use a static weighing-constant rate of grip separation test. This procedure employs a constant rate of separation of the grips holding the sample and a static load cell.
NOTE 1-This procedure is based on the use of grip separation as a measure of extension; however, the desirability of using extension indicators accurate to + 1.0 % or better as specified in Test Method D638 is recognized, and a provision for the use of such instrumentation is incorporated in the procedure.
This procedure has been successful for determining the
degradation end point of ethylene-carbon-mono
The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only.
This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
There is no equivalent ISO standard.