ISO 20568-2-2017 PDF

Full title and description

Plastics — Fluoropolymer dispersions and moulding and extrusion materials — Part 2: Preparation of test specimens and determination of properties. This part provides methods for preparing test specimens from thermoplastic fluoropolymer resins and specifies the test procedures used to determine key physical, thermal and mechanical properties for material designation and specification purposes.

Abstract

ISO 20568-2:2017 describes specimen preparation and a set of test methods to define the characteristics of thermoplastic fluoropolymer resins (materials supplied as dispersions, moulding compounds or extrusion grades). Test results are intended to be used as the basis for material designation and for creating material specifications or purchase requirements.

General information

• Status: Published
• Publication date: May 2017 (published 9 May 2017 in several national adoptions)
• Publisher: International Organization for Standardization (ISO)
• ICS / categories: 83.080.20 (Thermoplastic materials, fluoropolymers)
• Edition / version: Edition 1 (2017)
• Number of pages: 20 (official ISO listing)

Basic bibliographic and lifecycle information as listed by ISO and national adopters.

Scope

Specifies the methods for preparing test specimens from thermoplastic fluoropolymer materials (including dispersions and moulding/extrusion materials) and gives the test procedures to determine properties used for designation and specification. It applies to thermoplastic fluoropolymer resins intended for moulding and extrusion and is intended to support material characterization, quality control and contractual specifications.

Key topics and requirements

• Guidance on preparation of test specimens from pellets, moulding compounds and extruded products (conditioning, moulding, machining of specimens).
• Standardized test methods for determining physical properties (density, melt flow / melt volume rate where applicable).
• Mechanical property determinations (tensile properties, elongation at break, hardness where relevant).
• Thermal and thermal-stability related tests (heat deflection, melting behaviour, thermal degradation indicators as appropriate to fluoropolymers).
• Instructions for reporting test results to support material designation and specification (test conditions, specimen identification, reproducibility notes).
• References to relevant normative and informative references needed to perform the test methods consistently.

Typical use and users

Used by standards writers, material suppliers, polymer laboratories, quality-control and R&D teams in industries using fluoropolymers (chemical process equipment, electrical insulation, aerospace, medical device components, speciality coatings). It supports suppliers and purchasers when specifying material grades, and laboratories when performing comparative testing and issuing certificates of conformity.

Related standards

ISO 20568-2:2017 is Part 2 of the ISO 20568 series. Key related documents include ISO 20568-1:2017 (Part 1 — designation system and basis for specifications) and the earlier withdrawn ISO 12086 series (superseded by ISO 20568). These related parts provide the designation/classification system and context needed to convert test results into material designations and specifications.

Keywords

fluoropolymer, fluoropolymer dispersions, thermoplastic fluoropolymer resins, specimen preparation, test methods, moulding materials, extrusion materials, material designation, ISO 20568

FAQ

Q: What is this standard?

A: ISO 20568-2:2017 is an international standard that specifies how to prepare test specimens and which test methods to use to determine properties of thermoplastic fluoropolymer resins for moulding and extrusion.

Q: What does it cover?

A: It covers specimen preparation techniques and a set of physical, mechanical and thermal test procedures whose results are used for material designation and specification. It is focused on thermoplastic fluoropolymer materials supplied as dispersions, moulding compounds or extrusion grades.

Q: Who typically uses it?

A: Material suppliers, testing laboratories, product developers, quality-control personnel, procurement/specification writers and standards committees working with fluoropolymer materials.

Q: Is it current or superseded?

A: ISO 20568-2:2017 is the published edition (2017). It replaced earlier ISO 12086 series documents for the fluoropolymer designation/testing family; ISO standards are subject to periodic review (typically every five years). For the latest status or revision activity consult the issuing body.

Q: Is it part of a series?

A: Yes — it is Part 2 of the ISO 20568 series; Part 1 (ISO 20568-1:2017) defines the designation system and basis for specifications that work together with Part 2 test results.

Q: What are the key keywords?

A: Fluoropolymer, fluoropolymer dispersions, thermoplastic resins, specimen preparation, test methods, moulding, extrusion, material designation, ISO 20568.