ASTM-D4895 2023

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D4895-18(2023) Standard Specification for Polytetrafluoroethylene (PTFE) Resin Produced From Dispersion

Published By	Publication Date	Number of Pages
ASTM	2023

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Categories: 83.080.10 - Thermosetting materials, ASTM

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Description

ASTM D4895-18-Reapproved2023

Active Standard: Standard Specification for Polytetrafluoroethylene (PTFE) Resin Produced From Dispersion

ASTM D4895

Scope

1.1 This specification2 covers polytetrafluoroethylene (PTFE) prepared by coagulation of a dispersion. These PTFE resins are homopolymers of tetrafluoroethylene or modified homopolymers containing not more than 1 % by weight of other fluoromonomers. The materials covered herein do not include mixtures of PTFE with additives such as colors, fillers, or plasticizers; nor do they include reprocessed or reground resin or any fabricated articles because the properties of such materials have been irreversibly changed when they were fibrillated or sintered.

1.2 The values stated in SI units as detailed in IEEE/ASTM SI-10 are to be regarded as standard. The values given in parentheses are for information only.

1.3 The following safety hazards caveat pertains only to the Specimen Preparation Section, Section 9, and the Test Methods Section, Section 10, of this specification: 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. See Warning note in 9.1.1 for a specific hazards statement.

Note 1: Information in this specification is technically equivalent to related information in ISO 20568-1 and ISO 20568-2.

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Keywords

coagulated dispersion polytetrafluoroethylene; fluoropolymers; polytetrafluoroethylene; PTFE;

ICS Code

ICS Number Code 83.080.10 (Thermosetting materials)

DOI: 10.1520/D4895-18R23

Additional information

Standard Title	D4895-18(2023) Standard Specification for Polytetrafluoroethylene (PTFE) Resin Produced From Dispersion
Published Code	ASTM
Publication Date	2023
ICS Codes	83.080.10 - Thermosetting materials