Plastics - Polyamide (PA) moulding and extrusion materials - Part 1: Designation system and basis for specification (ISO 1874-1:2010); German version EN ISO 1874-1:2010 (Foreign Standard)
This part of the standard establishes a system of designation for polyamide (PA) thermoplastic materials, which may be used as the basis for specifications.*This standard establishes a system of designation for polyamide (PA) thermoplastic materials, which may be used as the basis for specifications. It covers polyamide homopolymers for moulding and extrusion based on PA 6, PA 66, PA 69, PA 610, PA 612, PA 11, PA 12, PA MXD6, PA 46, PA 1212, PA 4T, PA 6T and PA 9T and copolyamides of various compositions. The types of polyamide plastic are differentiated from each other by a classification system based on appropriate levels of the designatory properties a) viscosity number, b) tensile modulus of elasticity and c) presenceof nucleating agent, and on information about chemical structure, intended application, method of processing, important properties, additives, colorants, fillers and reinforcing materials. The designation system is applicable to all polyamide homopolymers and copolymers. It applies to materials ready for normal use, unmodified and modified by colorants, additives, fillers/reinforcing materials, polymer modifiers, etcetera. The International Standard ISO 1874-1 has been prepared by ISO/TC 61/SC 9 "Thermoplastic materials" (secretariat: ANSI, USA). CEN/TC 249 "Plastics", the secretariat of which is held by NBN, is responsible for the European Standard. On the national level, the Committee responsible for this standard is Working Committee NA 054-02-07 AA "Polyamid-Formmassen" ("Polyamides") of FNK.
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