标准摘要
[中文适用范围]： 本文件规定了在规定的测试环境中测定聚乙烯（PE）材料的耐环境应力开裂（ESC）性能的方法。 该测试是在由模压板/样本或成品加工而成的缺口测试样本上进行的。 当浸入特定温度的表面活性剂溶液等环境中时，测试样本会受到静态拉伸负载。 测量失效时间。 该方法专为聚乙烯材料开发，但可用于评估聚乙烯产品，如管道、熔焊/配件和吹塑聚乙烯容器，以研究腐蚀性环境（即危险品和化学品）的影响。 该方法适用于模制成选定尺寸的测试样本，或由压塑片材或注塑样本加工而成的测试样本，或由成品（例如模制品和管道）加工而成的测试样本。 当测试样本由挤压或模制零件加工而成时，结果不仅会受到材料特性的影响，还会受到加工过程中引入的应力或方向的影响。 [外文原描述]： This document specifies a method for determining the environmental stress cracking (ESC) resistance of polyethylene (PE) materials in a defined test environment. The test is carried out on notched test specimens machined from moulded sheets/specimens or from finished products. The test specimen is subjected to a static tensile load when immersed into an environment such as a surfactant solution held at a specified temperature. The time to failure is measured. The method has been specifically developed for polyethylene materials but can be used to evaluate PE products, such as pipes, fusion welds/fittings and blow-moulded PE containers to study the effect of aggressive environments, i.e. dangerous goods and chemicals. The method is suitable for use with test specimens moulded to chosen dimensions or machined from compression moulded sheets or injection moulded specimens, or from finished products, such as mouldings and pipes. When the test specimens are machined from extruded or moulded parts, the results can be affected not only by properties of the material, but also by stresses or orientation introduced during processing.
英文名称Plastics — Determination of environmental stress cracking (ESC) of polyethylene — Full-notch creep test (FNCT)