標準號：ISO 15853-1999
中文標準名稱：熱塑性塑料 為測定注塑用材料的靜液壓強度的管狀試樣的準備
英文標準名稱：Thermoplastic materials - Preparation of tubular test pieces for the determination of the hydrostatic strength of materials used for injection moulding
標準類型：G31
發布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：G31
國際標準分類號：83.140.30;23.040.20
適用范圍：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.