標準名稱

ISO 182-1 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 1: Congo red method

ISO 182-1塑料 基于氯乙烯共聚物、均聚物的化合物及產物在高溫下析出氯化氫和其他酸性產物的趨勢測定 第1部分:剛果紅法

適用范圍

Scope

Intended primarily as a simple and rapid quality-control test during the manufacture and conversion of PVC compounds .Suitable or coloured compounds. Is not recommended for compounds in the form of dry blends . The determination is carried out on a sample of the PVC compound which is maintained at an agreed temperature in still air until the colour of a Congo red paper held above it changes from red to blue. If universal indicator paper is used, the colour change is that corresponding to pH 3. The time required for the colour change is taken to be the stability time, t_s. Together with ISO 182-2, replaces and cancels ISO Recommendation R 182:1970.

相關標準

GB/T 2917.1以氯乙烯均聚和共聚物為主的共混物及制品在高溫時放出氯化氫和任何其他酸性產物的測定 剛果紅法/Determination of compounds and products based on vingl chloride homopolymers and copolymers to evolve hydrogen chloride and any other acidic products at elevated temperatures –Congo red method