Abstract

This classification system provides a method of adequately identifying PTFE micropowders using a system consistent with that also of another specific classification. These powders are sometimes known as lubricant powders which usually have a much smaller particle size than those used for molding or extrusion. The test methods and properties included are those required to identify and specify the various types of fluoropolymer micropowders. This classification covers two groups of fluoropolymer micropowders. Fluoropolymer micropowders are classified into groups according to their base fluoropolymer. These groups are further subdivided into classes and grades. Different tests shall be performed in order to determine the following properties of the micropowders: melting characteristics, melt flow rate, specific gravity, water content, particle size, surface area, and bulk density.

This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

1. Scope

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

ASTM International is a member of CrossRef.

ASTM D5675