ASTM D4591-97 - 10.6.2001
 
1. Scope

1.1 This test method defines conditions for the use of differential scanning calorimetry (DSC) with fluoropolymers. It covers the use of DSC analyses with the fluoropolymers, PTFE, PVDF, PCTFE, and PVF and their copolymers PFA, FEP, ECTFE, EFEP, VDF/HFP, VDF/TFE/HFP, VDF/CTFE. The test method is applicable to the analysis of powders as well as samples taken from semi-finished or finished products. The nature of fluoropolymers is such that special procedures are needed for running DSC analysis and interpreting the results.

1.2 The values stated in SI units as detailed in IEEE/ASTM SI 10 are to be regarded as the 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. Note 1--There is currently no ISO standard that duplicates this test method. Pending ISO 12086-1 and ISO 12086-2 cover similar testing and reference this test method for testing conditions.

 
2. Referenced Documents

IEEE/ASTM SI-10

Standard for Use of the International System of Units (SI) (the Modern Metric System)

D3418-21

Standard Test Method for Transition Temperatures and Enthalpies of Fusion and Crystallization of Polymers by Differential Scanning Calorimetry

D4894-19(2024)

Standard Specification for Polytetrafluoroethylene (PTFE) Granular Molding and Ram Extrusion Materials

ISO 12086-2

Plastics--Fluoropolymer Dispersion and Molding and Extrusion Materials--Part 2: Preparation of Test Specimen and Determination of Properties

D4895-18(2023)

Standard Specification for Polytetrafluoroethylene (PTFE) Resin Produced From Dispersion

E473-25a

Standard Terminology Relating to Thermal Analysis and Rheology (Includes all amendments and changes 9/11/2025).

E793-24

Standard Test Method for Enthalpies of Fusion and Crystallization by Differential Scanning Calorimetry

D1600-18

Standard Terminology for Abbreviated Terms Relating to Plastics (Withdrawn 2024)