标准摘要
[中文适用范围]： 本文件规定了一种测定应变硬化模量的方法，该方法用作聚乙烯耐慢速裂纹增长的衡量指标。 本文件规定了如何从压缩成型样品的“真应力与拉伸比”曲线获得应变硬化模量测量值。给出了生成数据所需的必要设备、精度和样品制备的详细信息。 本文件提供了一种适用于所有类型聚乙烯的方法，与用于管道和配件应用的制造技术、共聚单体或催化剂类型无关。 [外文原描述]： This document specifies a method for the determination of the strain hardening modulus, which is used as a measure for the resistance to slow crack growth of polyethylene. This document specifies how to obtain a strain hardening modulus measurement from “true stress vs. draw ratio” curves on compression moulded samples. Details of the necessary equipment, precision and sample preparation for the generation of data are given. This document provides a method that is valid for all types of polyethylene, independent from the manufacturing technology, comonomer or catalyst type used for pipes and fittings applications.
英文名称Polyethylene (PE) materials for piping systems — Determination of strain hardening modulus in relation to slow crack growth — Test method