标准摘要
[中文适用范围]： 本标准规定了测定热塑性管材及管件维卡软化温度（VST）的特定方法，包括ISO 306:2022标准中方法B 50的适配应用（施加50 N的作用力及50°C/h的升温速率）以及试样的制备程序。本标准涵盖了硬质聚氯乙烯（PVC-U）、氯化聚氯乙烯（PVC-C）、高抗冲聚氯乙烯（PVC-HI）以及丙烯腈-丁二烯-苯乙烯（ABS）和丙烯腈-苯乙烯-丙烯酸酯（ASA）管材及管件测定维卡软化温度（VST）的特定测试条件。本标准亦适用于其他材料（如超高分子量聚乙烯PE-UHMW）的管材及管件。 [外文原描述]： This document specifies a specific method for determining the Vicat softening temperature (VST) of thermoplastics pipes and fittings. It includes the adaption of method B 50 of ISO 306:2022 using a force of 50 N and a heating rate of 50 °C/h and the procedure for specimen preparation. It includes the particular test conditions for determining the Vicat softening temperature (VST) of unplasticized poly(vinylchloride) (PVC-U) or chlorinated poly(vinylchloride) (PVC-C) pipes and fittings, for high impact resistance poly(vinylchloride) (PVC-HI) pipes and for acrylonitrile/butadiene/styrene (ABS) and acrylonitrile/styrene/acrylic ester (ASA) pipes and fittings. This document can also be used for pipes and fittings from other materials (e.g. PE-UHMW).
英文名称Thermoplastics pipes and fittings — Vicat softening temperature — General test method and test conditions for vinyl chloride-based (PVC-U, PVC-C, PVC-HI) and acrylonitrile-based (ABS, ASA) pipes and fittings