标准摘要
[中文适用范围]： 本国际标准规定了通过注射成型生产用于测定耐内压性的管状试件的一般程序。 它还指定了要使用的模具的设计。 通过使用与注塑管道部件（例如配件）相同的材料，这些测试件可以确定配件材料在静水压力下以及在与挤压管道指定的完全相同的条件下的与时间相关的行为。 可以根据 ISO 1167 测试注射成型管状试件的耐内压性，并根据 ISO 9080 中规定的方法推断结果，以确定 MRS，并进行分类材料符合 ISO 12162 标准。 管状测试件还可以验证先前建立的应力/时间回归曲线上的各个点，作为最低材料测试要求。 本国际标准建立的基础允许可重复地制备测试件。 然而，给出的方法是通用方法，并且必须为所使用的每种材料指定注射成型参数。 注：如果用于管道部件注射成型的化合物也可以被挤出，那么可以使用注射成型或挤出管状试件来研究其与时间相关的行为。 [外文原描述]： This International Standard specifies a general procedure for the production, by injection-moulding, of tubular test pieces for the determination of the resistance to internal pressure. It also specifies the design of the mould to be used. By using the same material as for injection-moulded piping components, such as fittings, these test pieces make it possible to determine the time-related behaviour of the fitting material under hydrostatic pressure and under the very same conditions as specified for extruded pipes. It is possible to test the resistance to internal pressure of the injection-moulded tubular test pieces in accordance with ISO 1167, to extrapolate the results in accordance with a method such as that specified in ISO 9080 in order to determine the MRS, and to classify the material in accordance with ISO 12162. The tubular test pieces also make it possible to verify individual points on previously established stress/time regression curves as a minimum material test requirement. The basis established by this International Standard allows test pieces to be prepared reproducibly. Nevertheless, the method given is a general one, and the injection-moulding parameters have to be specified for every material used. NOTE If the compound used for the injection-moulding of piping components can also be extruded, then its time-related behaviour may be investigated using either injection-moulded or extruded tubular test pieces.
英文名称Thermoplastics materials — Preparation of tubular test pieces for the determination of the hydrostatic strength of materials used for injection moulding