ISO 14900:2017 塑料 聚亚安酯产品用多羟基化合物 羟基数量的测定

标准编号：ISO 14900:2017

中文名称：塑料 聚亚安酯产品用多羟基化合物 羟基数量的测定

英文名称：Plastics — Polyols for use in the production of polyurethane — Determination of hydroxyl number

发布日期：2017-03

标准范围

ISO 14900:2017规定了两种测量聚氨酯原材料多元醇羟基数的方法。了解多元醇的羟基含量是正确配制聚氨酯体系的必要条件。方法A主要适用于易酯化聚醚多元醇。它也适用于具有显著空间位阻的多元醇，例如基于糖的多元醇。方法B适用于聚醚多元醇、聚合物多元醇和胺引发多元醇，但对空间位阻多元醇的结果可能较低。如果采取预防措施来验证适用性，其他多元醇可以通过这些方法进行分析。这些方法可用于研究、质量控制和规范目的。

ISO 14900:2017 specifies two methods for the measurement of the hydroxyl number of polyols used as polyurethane raw materials. It is necessary to know the hydroxyl content of polyols to properly formulate polyurethane systems. Method A is primarily applicable to readily esterified polyether polyols. It is also intended for polyols which have significant steric hindrance, such as those based on sugars. Method B is intended for polyether polyols, polymer polyols and amine-initiated polyols, but may give low results for sterically hindered polyols. Other polyols can be analysed by these methods if precautions are taken to verify applicability. These methods can be used for research and for quality control and specification purposes.

标准预览图