標準號：BS ISO 14900-2001
中文標準名稱：塑料制品.聚氨酯生產(chǎn)用多元醇.羥基數(shù)值測定
英文標準名稱：Plastics - Polyols for use in the production of polyurethane - Determination of hydroxyl number
標準類型：G31
發(fā)布日期：2001/5/15 12:00:00
實施日期：2001/5/15 12:00:00
中國標準分類號：G31
國際標準分類號：83.080.20
適用范圍：This International Standard 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 recommended for polyols which have significant steric hindrance, such as those based on sugars. Method B is recommended for polyether polyols, polymer polyols and amine-initiated polyols, but may give low results for sterically hindered polyols. Other polyols may 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.