ISO 182-4-1993
塑料 基于氯乙烯共聚物、均聚物的化合物及产物在高温下析出氯化氢和其他酸性产物的趋势测定 第4部分:电位测量法

Plastics; determination of the tendency of compounds and products based on vinyl chloride homopolymers and copolymers to evolve hydrogen chloride and any other acidic products at elevated temperatures; part 4: potentiometric method

标准号

ISO 182-4-1993

发布日期

1993年04月

实施日期

废止日期

无

中国标准分类号

G31

国际标准分类号

83.080.20

发布单位

IX-ISO

适用范围

The principle of the method is maintaining a test portion of the PVC at an agreed temperature in a nitrogen gas stream, absorbing the hydrogen chloride evolved in a given amount of an appropriate solution, and potentiometrically determining the amount of hydrogen chloride evolved in relation to the recorded change in pCl of the absorbing solution. The method is recommended for compounded PVC materials and products only, although it can be used for polymers in powder form under appropriate conditions.

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