1. Scope

1.1 This classification system provides a method of adequately identifying PTFE micropowders using a system consistent with that of Classification System D 4000. It further provides a means for specifying these materials by the use of a simple line callout designation. This classification covers fluoropolymer micropowders that are used as lubricants and as additives to other materials in order to improve lubricity or to control other characteristics of the base material.

1.2 These powders are sometimes known as lubricant powders. The powders usually have a much smaller particle size than those used for molding or extrusion, and they generally are not processed alone. The test methods and properties included are those required to identify and specify the various types of fluoropolymer micropowders. Recycled fluoropolymer materials meeting the detailed requirements of this classification are included (see Guide D 5033).

1.3 These micropowders and the materials designated as filler powders (F) in ISO 12086-1 and ISO 12086-2 are equivalent.

1.4 The values stated in SI units as detailed in IEEE/ASTM SI 10 are to be regarded as standard.

1.5 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 precautionary statements are given in 7.1.2.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

D854 Test Methods for Specific Gravity of Soil Solids by Water Pycnometer

D883 Terminology Relating to Plastics

D1238 Test Method for Melt Flow Rates of Thermoplastics by Extrusion Plastometer

D1600 Terminology for Abbreviated Terms Relating to Plastics

D3892 Practice for Packaging/Packing of Plastics

D4000 Classification System for Specifying Plastic Materials

D4464 Test Method for Particle Size Distribution of Catalytic Material by Laser Light Scattering

D4567 Test Method for Single-Point Determination of Specific Surface Area of Catalysts and Catalyst Carriers Using Nitrogen Adsorption by Continuous Flow Method

D4591 Test Method for Determining Temperatures and Heats of Transitions of Fluoropolymers by Differential Scanning Calorimetry

D4895 Specification for Polytetrafluoroethylene (PTFE) Resin Produced From Dispersion

D5033 Guide for Development of ASTM Standards Relating to Recycling and Use of Recycled Plastics

D5740 Guide for Writing Material Standards in the Classification Format

IEEE/ASTM SI-10 Standard for Use of the International System of Units (SI): The Modern Metric System

ISO Standards

Keywords

fluorinated ethylene propylene, FEP; fluoropolymer; line callout; lubricant powder; micronized powder; polytetrafluoroethylene; PTFE;

ICS Code

ICS Number Code 83.080.01 (Plastics in general)

DOI: 10.1520/D5675-04

ASTM International is a member of CrossRef.