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ASTM D2538-02

Historical Revision

Standard Practice for Fusion of Poly(Vinyl Chloride) (PVC) Compounds Using a Torque Rheometer

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1.1 This practice covers the relative fusion characteristics of poly(vinyl chloride) compounds.

1.2 The test procedures appear in the following order:

Section
Fusion Test9
Thermal Stability Test10
Color-Hold Stability Test11
Shear Stability Test12

1.3 The values stated in SI units are to be regarded as the standard.

1.4 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. Specific hazards statements are given in Section 8 .

Note 1—There are no ISO standards covering the primary subject matter of this ASTM standard.


When PVC compounds are mixed under appropriate conditions of heat and shear, a fused mass is produced. This mass has certain melt characteristics which can be defined with a torque rheometer operated under fixed conditions of shear and temperature. The fusion characteristics of a PVC compound are manifest as fusion time, fusion torque, melt torque, melt viscosity, and heat and color stability.

A control lot is to be used as a standard against which other test results are to be compared. Test data are to be evaluated relative to the control lot.

SDO ASTM: ASTM International
Document Number D2538
Publication Date Aug. 10, 2002
Language en - English
Page Count 6
Revision Level 02
Supercedes
Committee D20.15
Publish Date Document Id Type View
Nov. 1, 2018 D2538-18 Revision
Aug. 10, 2002 D2538-02 Revision
June 15, 1995 D2538-95 Revision
Nov. 1, 2010 D2538-02R10 Reaffirmation
June 15, 1995 D2538-95R01 Reaffirmation