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ASTM D926-08(2013)

Historical Reaffirmation

Standard Test Method for Rubber Property—Plasticity and Recovery (Parallel Plate Method)

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1.1 This test method covers the determination of plasticity and recovery of unvulcanized rubber by means of the parallel plate plastometer. Uncompounded, compounded, and reclaim rubber may be tested.

Note 1ISO 2007 and Test Method D3194 use a principle similar to this test method although the apparatus, test conditions, and procedure are different.

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3 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.


4.1 The plasticity number and the recovery of the test specimen are related to the flow properties and the elastic properties, respectively, and may be useful in predicting processing characteristics, such as ease of forming and extrusion characteristics.

4.1.1 In this test method, plasticity is measured in an inverse manner, as noted by the final height of the specimen. Thus, high plasticity rubbers (high degree of flow during test) are indicated by a low plasticity number.

SDO ASTM: ASTM International
Document Number D926
Publication Date Nov. 1, 2013
Language en - English
Page Count 4
Revision Level 08(2013)
Supercedes
Committee D11.12
Publish Date Document Id Type View
Oct. 1, 2017 D0926-17 Revision
Nov. 1, 2008 D0926-08 Revision
June 1, 2004 D0926-04 Revision
Dec. 10, 2002 D0926-02 Revision
Nov. 10, 1998 D0926-98 Revision
Oct. 1, 2022 D0926-17R22 Reaffirmation
Nov. 1, 2013 D0926-08R13 Reaffirmation