ASTM D3826-18
Standard Practice for Determining Degradation End Point in Degradable Polyethylene and Polypropylene Using a Tensile Test

Standard No.

ASTM D3826-18

Release Date

2018

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM D3826-18

Scope

1.1 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 or degree of degradation of a polyethylene/polypropylene film or sheet, but rather, to assess when in the course of its degradation under some condition, a brittle point is reached. If one wishes to monitor tensile elongation during the degradation process (such as when the tensile elongation is significantly greater than 5 %), Test Method D882 is recommended. This practice is not to be considered the only way of determining a degradation-end point. 1.2 Tensile properties of plastics 1.0 mm (0.04 in.) or greater in thickness shall be determined in accordance with Test Method D638. 1.3 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 61.0 % or better as specified in Test Method D638 is recognized, and a provision for the use of such instrumentation is incorporated in the procedure. 1.4 This procedure has been successful for determining the degradation end point of ethylene-carbon-monoxide copolymers and has screened successfully two other additive-type polyethylenes in a round robin test. 1.5 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only. 1.6 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. 1.7 There is no equivalent ISO standard. 1.8 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 D3826-18 Referenced Document

• ASTM D374/D374M Standard Test Methods for Thickness of Solid Electrical Insulation*， 2023-10-01 Update
• ASTM D5208 Standard Practice for Fluorescent Ultraviolet (UV) Exposure of Photodegradable Plastics
• ASTM D5947 Standard Test Methods for Physical Dimensions of Solid Plastics Specimens
• ASTM D618 Standard Practice for Conditioning Plastics for Testing*， 2021-07-15 Update
• ASTM D638 Standard Test Method for Tensile Properties of Plastics
• ASTM D882 Standard Test Method for Tensile Properties of Thin Plastic Sheeting
• ASTM D883 Standard Terminology Relating to Plastics*， 2024-02-01 Update
• ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method

ASTM D3826-18 history

• 2018 ASTM D3826-18 Standard Practice for Determining Degradation End Point in Degradable Polyethylene and Polypropylene Using a Tensile Test
• 1998 ASTM D3826-98(2013) Standard Practice for Determining Degradation End Point in Degradable Polyethylene and Polypropylene Using a Tensile Test
• 1998 ASTM D3826-98(2008) Standard Practice for Determining Degradation End Point in Degradable Polyethylene and Polypropylene Using a Tensile Test
• 1998 ASTM D3826-98(2002) Standard Practice for Determining Degradation End Point in Degradable Polyethylene and Polypropylene Using a Tensile Test
• 1998 ASTM D3826-98 Standard Practice for Determining Degradation End Point in Degradable Polyethylene and Polypropylene Using a Tensile Test
• 1991 ASTM D3826-91e1 Standard Practice for Determining Degradation End Point in Degradable Polyethylene and Polypropylene Using a Tensile Test