ISO 14897:2002 塑料-聚亚安酯产品用多羟基化合物-水含量的测定

标准编号：ISO 14897:2002

中文名称：塑料-聚亚安酯产品用多羟基化合物-水含量的测定

英文名称：Plastics — Polyols for use in the production of polyurethane — Determination of water content

发布日期：2002-06

标准范围

ISO 14897规定了用作聚氨酯原料的多元醇的含水量测量方法。方法A是一种手动安培测量法，用于更好地定义卡尔·费舍尔测量原理。安培法适用于多种多元醇，包括那些颜色足以模糊视觉终点的多元醇。方法B包括自动安培程序和自动库仑程序。库仑法是一种绝对法，无需校准，与安培法相比灵敏度更高。

ISO 14897 specifies methods used to measure the water content of polyols employed as polyurethane raw materials. Method A is a manual amperometric method which has been included to better define the principles of the Karl Fischer measurement. Amperometric methods are applicable to a wide range of polyols, including those which have enough colour to obscure a visual end-point. Method B includes an automated amperometric procedure and an automated coulometric procedure. The coulometric procedure is an absolute method that does not require calibration and gives improved sensitivity compared with amperometric methods.

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