Active Standard ASTM D2538 | Developed by Subcommittee: D20.15
Book of Standards Volume: 08.01
Historical (view previous versions of standard)
Significance and Use
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.
1.1 This practice covers the relative fusion characteristics of poly(vinyl chloride) compounds.
1.2 The test procedures appear in the following order:
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D883 Terminology Relating to Plastics
D1600 Terminology for Abbreviated Terms Relating to Plastics
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
ICS Number Code 83.080.20 (Thermoplastic materials)