ASTM D5644-01(2013)
Standard Test Methods for Rubber Compounding Materialsmdash;Determination of Particle Size Distribution of Recycled Vulcanizate Particulate Rubber

Standard No.

ASTM D5644-01(2013)

Release Date

2001

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM D5644-18

Latest

ASTM D5644-23

Scope

4.1 The particulate size distribution of vulcanizate particulate rubber is used for the purpose of assigning a product mesh or average particle size designation.

4.2 The product designation for mesh size for the Ro-tap method (Method A, as follows) is based on the size designation screen which allows a range for the upper limit retained of maximum 58201;% for up to 850 μm (20 mesh) particles, maximum 108201;% for 600 to 150 μm (30 to 100 mesh), and maximum 158201;% for 128 to 75 μm (120 to 200 mesh). No rubber particles shall be retained on the zero screen (see Table 1, Classification D5603).

4.3 For Method A, the weight percent retained on a specific screen is noted whereas in Method B (ultrasonic technique), the number of particles at a particular size is counted.

4.4 Method B addresses problems that may be caused by tackiness and static electrical forces that recycled rubber particles exert on each other to form agglomerates, especially for 80 mesh or finer particles. This method eliminates agglomerate formation by ultrasonically dispersing the particles.

4.5 Both methods can be used as a quality control tool.

1.1 These test methods describe the procedures for determining average particle size distribution of recycled vulcanizate particulate.

1.2 Method A describes the Ro-tap sieve test method for 60 mesh or coarser particles.

1.3 Method B describes the ultrasonic technique combined with optical microscope especially suitable for 80 mesh or finer particles. This procedure is based on Test Method D3849.

1.4 The values stated in SI units are to be regarded as the 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 and health practices and determine the applicability of regulatory limitations prior to use.

ASTM D5644-01(2013) Referenced Document

• ASTM D1416 
• ASTM D1566 Standard Terminology Relating to Rubber
• ASTM D297 Standard Test Methods for Rubber Products-Chemical Analysis
• ASTM D3182 Standard Practice for Rubber-Materials, Equipment, and Procedures for Mixing Standard Compounds and Preparing Standard Vulcanized Sheets
• ASTM D3191 Standard Test Methods for Carbon Black in SBR (Styrene-Butadiene Rubber)—Recipe and Evaluation Procedures
• ASTM D3192 Standard Test Methods for Carbon Black Evaluation in NR (Natural Rubber)
• ASTM D3849 Standard Test Method for Carbon Black - Primary Aggregate Dimensions from Electron Microscope Image Analysis
• ASTM D5603 Standard Classification for Rubber Compounding Materials—Recycled Vulcanizate Particulate Rubber
• ASTM E105 Standard Practice for Probability Sampling Of Materials
• ASTM E11 Standard Specification for Wire Cloth and Sieves for Testing Purposes

ASTM D5644-01(2013) history

• 2023 ASTM D5644-23 Standard Test Method for Rubber Compounding Materials—Determination of Particle Size Distribution of Recycled Vulcanizate Particulate Rubber
• 2018 ASTM D5644-18 Standard Test Method for Rubber Compounding Materials—Determination of Particle Size Distribution of Recycled Vulcanizate Particulate Rubber
• 2001 ASTM D5644-01(2013) Standard Test Methods for Rubber Compounding Materialsmdash;Determination of Particle Size Distribution of Recycled Vulcanizate Particulate Rubber
• 2001 ASTM D5644-01(2008)e1 Standard Test Methods for Rubber Compounding Materials Determination of Particle Size Distribution of Recycled Vulcanizate Particulate Rubber
• 2001 ASTM D5644-01(2008) Standard Test Methods for Rubber Compounding Materials Determination of Particle Size Distribution of Recycled Vulcanizate Particulate Rubber
• 2001 ASTM D5644-01 Standard Test Methods for Rubber Compounding Materials8212Determination of Particle Size Distribution of Recylced Vulcanizate Particulate Rubber
• 2001 ASTM D5644-96 Standard Test Method for Rubber Compounding Materials—Determination of Particle Size Distribution of Vulcanized Particulate Rubber