标准编号:	GB/T 1633-2000
中文名称:	热塑性塑料维卡软化温度（VST）的测定
英文名称:	Plastics--Thermoplastic materials--Determination of Vicat sofening temperature (VST)
中标分类:	G31    合成树脂、塑料基础标准与通用方法
行业分类:	GB    国家标准
ICS分类:	83.080.20 83.080.20    热塑性塑料 83.080.20
发布机构:	国家质量技术监督局
发布日期:	2000-07-31
实施日期:	2001-3-1
标准状态:	to be superseded
被新标准替代:	GB/T 1633-2025 塑料 热塑性塑料维卡软化温度（VST）的测定
被替代日期:	2026-7-1
替代旧标准:	GB/T 1633-19791989 GB/T 1633-19791989 GB 1633-1979 热塑性塑料软化点(维卡)试验方法
翻译语言:	英文
文件格式:	PDF

1 Scope This Standard 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 ℃/h Method B50 —— using a force of 50 N and a heating rate of 50 ℃/h Method A120 —— using a force of 10 N and a heating rate of 120 ℃/h Method B120 —— using a force of 50 N and a heating rate of 120 ℃/h The methods specified in this Standard are applicable only to thermoplastics, for which they give a measure of thetemperature at which the thermoplastics start to soften rapidly. 2 Normative References The following standards contain provisions which, through reference in this Standard, constitute provisions of this Standard. At the time of publication, all editions indicated are valid. All standards are subject to revision, and all parties coming to an agreement according to this standard are encouraged to study whether the latest editions of these documents are applicable.