I.S. EN ISO 20557-1:2018
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The latest, up-to-date edition.
Plastics - Poly(phenylene ether) (PPE) moulding and extrusion materials - Part 1: Designation system and basis for specifications (ISO 20557-1:2018)
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31-07-2018
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This document establishes a system of designation for poly(phenylene ether) (PPE) thermoplasticmaterials, which can be used as the basis for specifications.The types of poly(phenylene ether) (PPE) materials are differentiated from each other by a classificationsystem based on appropriate levels of the designatory properties:a) temperature of deflection under load;b) melt volume-flow rate;c) Charpy notched impact strength;d) flammability;and on information about basic polymer parameters, intended application and/or method of processing,important properties, additives, colorants, fillers and reinforcing materials.This document is applicable to all PPE materials, including those modified with polystyrene orpolyamide or other materials.It applies to materials ready for normal use in the form of powder, granules or pellets and to materialsunmodified or modified by colorants, additives, fillers, etc.It is not intended to imply that materials having the same designation give necessarily the sameperformance. This document does not provide engineering data, performance data or data onprocessing conditions which can be required to specify a material for a particular application and/ormethod of processing. If such additional properties are required, they are intended to be determined inaccordance with the test methods specified in ISO 20557-2, if suitable.In order to specify a thermoplastic material for a particular application or to ensure reproducibleprocessing, the requirements are given in data block 5 (see 4.1).
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