标准编号：ISO 306:2022
中文名称：塑料 热塑性材料 维卡软化温度（VST）的测定
英文名称：Plastics — Thermoplastic materials — Determination of Vicat softening temperature (VST)
发布日期：2022-11
标准范围
1.1 This document specifies four methods for the determination of the Vicat softening temperature (VST) of thermoplastic materials: — Method A50 using a force of 10 N and a heating rate of 50 °C/h; — Method B50 using a force of 50 N and a heating rate of 50 °C/h; — Method A120 using a force of 10 N and a heating rate of 120 °C/h; — Method B120 using a force of 50 N and a heating rate of 120 °C/h.
1.2 The methods specified are applicable only to thermoplastics, for which they give a measure of the temperature at which the thermoplastics start to soften rapidly.
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