ASTM D4883-08
Standard Test Method for Density of Polyethylene by the Ultrasound Technique
- Standard No.
- ASTM D4883-08
- Release Date
- 2008
- Published By
- American Society for Testing and Materials (ASTM)
- Status
- Replace By
- ASTM D4883-18
- Latest
- ASTM D4883-18
- Scope
The density of polyethylene is a conveniently measurable property which is frequently useful as a means of following physical changes in a sample, as an indication of uniformity among samples, and as a means of identification.
This test method is designed to yield results with a precision of ±0.08 % or better.
1.1 This test method covers the determination of the density of polyethylene through the utilization of ultrasound equipment.
1.2 This test method is based on the distinct behaviors of the amorphous and crystalline phases of polyethylene in response to ultrasound. Polyethylene shall be viewed as a composite structure where high-density crystalline regions are connected by lower-density amorphous material. The ratio of crystalline to amorphous material determines the final density of the material. The amorphous and crystalline phases exhibit very distinct behaviors with regard to the propagation of sound waves. The propagation characteristics in the composite will depend on the relative amount of the two phases (the degree of crystallinity).
1.3 Inorganic materials increase density as measured by Test Methods D 792
and D 1505 , but they have little or no effect on ultrasonic density. The ultrasonic measurement is basically a base resin density. 1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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 and health practices and determine the applicability of regulatory limitations prior to use.
Note 18212;There is no known ISO equivalent to this standard.
ASTM D4883-08 Referenced Document
- ASTM D1248 Standard Specification for Polyethylene Plastics Molding and Extrusion Materials
- ASTM D1505 Standard Test Method for Density of Plastics by the Density-Gradient Technique
- ASTM D3350 Standard Specification for Polyethylene Plastics Pipe and Fittings Materials*， 2024-04-19 Update
- ASTM D4703 Standard Practice for Compression Molding Thermoplastic Materials into Test Specimens, Plaques, or Sheets
- ASTM D4976 Standard specifications for polyethylene plastic molding and extrusion materials*， 2024-04-19 Update
- ASTM D618 Standard Practice for Conditioning Plastics for Testing
- ASTM D792 Standard Test Methods for Density and Specific Gravity (Relative Density) of Plastics by Displacement
- ASTM D883 Standard Terminology Relating to Plastics
- ASTM E494 Standard Practice for Measuring Ultrasonic Velocity in Materials
- ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
ASTM D4883-08 history
- 2018 ASTM D4883-18 Standard Test Method for Density of Polyethylene by the Ultrasound Technique
- 2008 ASTM D4883-08 Standard Test Method for Density of Polyethylene by the Ultrasound Technique
- 2003 ASTM D4883-03 Standard Test Method for Density of Polyethylene by the Ultrasound Technique
- 1999 ASTM D4883-99 Standard Test Method for Density of Polyethylene by the Ultrasound Technique
