ISO 21304-1:2019 塑料 超高分子量聚乙烯（PE-UHMW）成型和挤压材料 第1部分：规范的命名系统和依据

标准编号：ISO 21304-1:2019

中文名称：塑料 超高分子量聚乙烯（PE-UHMW）成型和挤压材料 第1部分：规范的命名系统和依据

英文名称：Plastics — Ultra-high-molecular-weight polyethylene (PE-UHMW) moulding and extrusion materials — Part 1: Designation system and basis for specifications

发布日期：2019-03

标准范围

本文件建立了热塑性PE-UHMW材料的命名体系，可作为规范的基础。在本文件中，PE-UHMW材料是指熔体质量流率（MFR）小于0.1 g/10 min的聚乙烯材料，在190°C和21.6 kg载荷下测量。注:已经证实，在230°C/21,6 kg的试验条件下，熔体体积流动速率（MVR）有助于表征一些PE-UHMW材料（例如管道材料）的特性，模具孔径为3628 mm（见ISO 21304-2）。PE-UHMW的类型通过基于适当级别的设计属性的分类系统相互区分:a） 粘度值；b） 拉伸应力；c） 夏比双缺口冲击强度；以及关于预期用途和/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。该命名体系适用于所有PE-UHMW均聚物和超高分子量乙烯共聚物，其中，其他1-烯烃单体的质量含量小于50%，非烯烃单体的官能团含量最大为3%。本标准适用于以粉末、颗粒或颗粒的形式准备好正常使用的材料，未经色素、填料和其他添加剂改性或改性。这并不意味着具有相同名称的材料必然具有相同的性能。本文件不提供指定材料所需的工程数据、性能数据或加工条件数据。如果需要此类附加性能，则应按照ISO 21304中规定的试验方法进行测定-2.如果合适的话。为了指定热塑性PE-UHMW材料以满足特定规范，数据块5中给出了要求（见4.1）。

This document establishes a system of designation for thermoplastic PE-UHMW materials, which can be used as the basis for specifications.

For the purposes of this document, PE-UHMW materials are polyethylene materials having a melt mass-flow rate (MFR) of less than 0,1 g/10 min, measured at 190 °C and 21,6 kg load.

NOTE It has been confirmed that the melt volume-flow rate (MVR) is useful for characterizing some PE-UHMW materials (e.g. pipe materials) under the test condition of 230 °C/21,6 kg and bore diameter of die with 3,628 mm (see ISO 21304-2).

The types of PE-UHMW are differentiated from each other by a classification system based on appropriate levels of the designatory properties:

a) viscosity number;

b) elongational stress;

c) Charpy double-notched impact strength;

and on information about the intended application and/or method of processing, important properties, additives, colorants, fillers and reinforcing materials.

This designation system is applicable to all PE-UHMW homopolymers and to ultra-high-molecular-weight copolymers of ethylene having a content of other 1-olefinic monomers of less than 50 % by mass and a content of non-olefinic monomers with functional groups up to a maximum of 3 % by mass. It applies to materials ready for normal use in the form of powder, granules or pellets, unmodified or modified by colorants, fillers and other additives.

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. If such additional properties are required, they are intended to be determined in accordance with the test methods specified in ISO 21304-2, if suitable.

In order to specify a thermoplastic PE-UHMW material to meet particular specifications, the requirements are to be given in data block 5 (see 4.1).

标准预览图