ASTM D5721-22 PDF

Scope: 1.1 This practice covers a means for estimating the resistance of polyolefin geomembranes to thermal aging in the presence of air. 1.2 This practice should be used as a guide to compare thermal aging characteristics of materials as measured by the change in some property of interest. This practice does not predict thermal aging characteristics where interactions between stress, environment, temperature, and time control failure. 1.3 This practice is useful for the development of formulations of polyolefin geomembranes. 1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.5 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ASTM D5721-22 Referenced Document

ASTM D1238 Standard Test Method for Flow Rates of Thermoplastics by Extrusion Plastometer
ASTM D1505 Standard Test Method for Density of Plastics by the Density-Gradient Technique
ASTM D1525 Standard Test Method for Vicat Softening Temperature of Plastics
ASTM D1790 Standard Test Method for Brittleness Temperature of Plastic Sheeting by Impact
ASTM D3045 Standard Practice for Heat Aging of Plastics Without Load
ASTM D4439 Standard Terminology for Geosynthetics*， 2024-02-01 Update
ASTM D5885/D5885M Standard Test Method for Oxidative Induction Time of Polyolefin Geosynthetics by High-Pressure Differential Scanning Calorimetry
ASTM D618 Standard Practice for Conditioning Plastics for Testing
ASTM D638 Standard Test Method for Tensile Properties of Plastics
ASTM D6693/D6693M Standard Test Method for Determining Tensile Properties of Nonreinforced Polyethylene and Nonreinforced Flexible Polypropylene Geomembranes
ASTM D746 Standard Test Method for Brittleness Temperature of Plastics and Elastomers by Impact
ASTM D792 Standard Test Methods for Density and Specific Gravity (Relative Density) of Plastics by Displacement
ASTM D8117 Standard Test Method for Oxidative Induction Time of Polyolefin Geosynthetics by Differential Scanning Calorimetry
ASTM E145 Standard Specification for Gravity-Convection And Forced-Ventilation Ovens
ASTM F412 Standard Terminology Relating to Plastic Piping Systems*， 2023-07-20 Update

2022 ASTM D5721-22 Standard Practice for Air-Oven Aging of Polyolefin Geomembranes
2018 ASTM D5721-08(2018) Standard Practice for Air-Oven Aging of Polyolefin Geomembranes
2008 ASTM D5721-08(2013) Standard Practice for Air-Oven Aging of Polyolefin Geomembranes
2008 ASTM D5721-08 Standard Practice for Air-Oven Aging of Polyolefin Geomembranes
1995 ASTM D5721-95(2002) Standard Practice for Air-Oven Aging of Polyolefin Geomembranes
1995 ASTM D5721-95 Standard Practice for Air-Oven Aging of Polyolefin Geomembranes