ISO 182-4:1993-塑料制品；基于氯乙烯均聚物和共聚物的化合物和产品在高温下析出氯化氢和任何其他酸性产品趋势的测定第4部分:电位滴定法 -国家数字标准馆

现行 ISO 182-4:1993

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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 塑料制品；基于氯乙烯均聚物和共聚物的化合物和产品在高温下析出氯化氢和任何其他酸性产品趋势的测定第4部分:电位滴定法

发布日期： 1993-03-25

该方法的原理是在氮气流中将PVC的试验部分保持在商定的温度，吸收在给定量的适当溶液中析出的氯化氢，并根据吸收溶液中pCl的记录变化电位测定析出的氯化氢量。该方法仅适用于复合PVC材料和产品，但在适当条件下可用于粉末状聚合物。

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.

分类信息

发布单位或类别：国际组织-国际标准化组织

ICS分类： 83.080.20塑料 - 热塑性塑料

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研制信息

归口单位： ISO/TC 61/SC 9

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