塑料乙烯/乙烯醇（EVOH）共聚物模塑和挤出材料 第1部分:名称系统和规范的基础

[中文适用范围]： 本文件建立了乙烯/乙烯醇（EVOH）共聚物热塑性材料的命名系统，可作为规范的基础。 乙烯/乙烯醇 (EVOH) 共聚物塑料的类型通过基于适当水平的指定性能的分类系统进行区分： ——熔体质量流动速率； - 以及有关基本聚合物参数、预期应用和/或加工方法、重要性能、添加剂、着色剂、填料和增强材料的信息。 本文件适用于含有15mol％至60mol％乙烯的乙烯和乙烯醇的共聚物。 它适用于正常使用的粉末、颗粒或丸粒形式的材料，未经改性或经着色剂、添加剂、填料等改性。 这并不意味着具有相同名称的材料必然具有相同的性能。 本文件不提供工程数据、性能数据或加工条件数据，这些数据可能需要为特定应用和/或加工方法指定材料。 如果需要此类附加属性，则应根据 ISO 21309-2 中描述的测试方法（如果适用）进行确定。 为了指定特定应用的热塑性材料或确保可重复加工，可以在数据块 4 和 5 中给出附加要求（参见第 4 条介绍性段落）。 [外文原描述]： This document establishes a system of designation for ethylene/vinyl alcohol (EVOH) copolymer thermoplastic materials, which may be used as the basis for specifications. The types of ethylene/vinyl alcohol (EVOH) copolymer plastic are differentiated from each other by a classification system based on appropriate levels of the designatory property: — melt mass-flow rate; — 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 copolymers of ethylene and vinyl alcohol containing from 15 mol % to 60 mol % of ethylene. It applies to materials ready for normal use in the form of powder, granules or pellets, unmodified or modified by colorants, additives, fillers, etc. It is not intended to imply that materials having the same designation give necessarily the same performance. This document does not provide engineering data, performance data or data on processing conditions which can be required to specify a material for a particular application and/or method of processing. If such additional properties are required, they are intended to be determined in accordance with the test methods described ISO 21309-2, if suitable. In order to specify a thermoplastic material for a particular application or to ensure reproducible processing, additional requirements can be given in data block 4 and 5 (see Clause 4, introductory paragraph).