ISO 16770-2004 塑料.聚乙烯环境应力断裂(ESC)的测定.全切口蠕变试验(FNCT)

标准号：ISO 16770-2004
中文标准名称：塑料.聚乙烯环境应力断裂(ESC)的测定.全切口蠕变试验(FNCT)
英文标准名称：Plastics - Determination of environmental stress cracking (ESC) of polyethylene - Full-notch creep test (FNCT)
标准类型：G31
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：G31
国际标准分类号：83.080.20
适用范围：This International Standard specifies a method of determining the stress cracking resistance of polyethylene materials in any environment. The test is carried out on notched test specimens cut from compression-moulded sheet or finished products, as applicable. The test specimen is subjected to a static tensile load when immersed in an environment such as a surfactant solution held at a specified temperature, and the time to failure measured. The method has been specifically developed for polyethylene materials but can be used to evaluate PE extrusions, such as pipe segments, PE fusion welds/fittings and blow-moulded PE containers to study the effect of aggressive environments, i.e. dangerous goods/chemicals. The method may also be adapted for other thermoplastic materials, e.g. polypropylene (PP). In this case, care must be taken in interpreting the results as the processing stresses/orientation in finished products may have an effect.