ISO 21309-2:2019 塑料 乙烯/乙烯醇（EVOH）共聚物成型和挤出材料 第2部分：试样的制备和性能的测定

标准编号：ISO 21309-2:2019

中文名称：塑料 乙烯/乙烯醇（EVOH）共聚物成型和挤出材料 第2部分：试样的制备和性能的测定

英文名称：Plastics — Ethylene/vinyl alcohol (EVOH) copolymer moulding and extrusion materials — Part 2: Preparation of test specimens and determination of properties

发布日期：2019-02

标准范围

本文件规定了试样的制备方法，以及用于测定乙烯/乙烯醇（EVOH）共聚物模塑和挤出材料性能的试验方法。它给出了处理试验材料的要求，以及成型前试验材料和试验前试样的调节要求。本文件描述了制备试样的程序和条件，以及测量制备试样所用材料性能的程序。本文件列出了表征EVOH模塑和挤压材料的合适和必要的性能和试验方法。这些性能是从ISO 10350-1中的通用试验方法中选择的。本文件还包括了广泛用于这些模塑和挤压材料或对其具有特殊意义的其他试验方法，以及ISO 21309-1中规定的熔体质量流率设计特性。为了获得可重复和可比较的试验结果，拟采用本文规定的试样制备和调节方法、试样尺寸和试验程序。确定的值不一定与使用不同尺寸的试样或使用不同程序制备的试样获得的值相同。

This document specifies the methods of preparation of test specimens and the test methods to be used in determining the properties of ethylene/vinyl alcohol (EVOH) copolymer moulding and extrusion materials. It gives requirements for handling test material and for conditioning both the test material before moulding and the specimens before testing.This document describes procedures and conditions for the preparation of test specimens, and procedures for measuring properties of the materials from which these specimens are made. Properties and test methods which are suitable and necessary to characterize EVOH moulding and extrusion materials are listed in this document.The properties have been selected from the general test methods in ISO 10350-1. Other test methods in wide use for or of particular significance to these moulding and extrusion materials are also included in this document, as is the melt mass-flow rate designatory property specified in ISO 21309-1.In order to obtain reproducible and comparable test results, it is intended to use the methods of specimen preparation and conditioning, the specimen dimensions and the test procedures specified herein. Values determined will not necessarily be identical to those obtained using specimens of different dimensions or prepared using different procedures.

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