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国家标准 GB12008.4-89《聚醚多元醇中钠和钾的测定》已发布实施。聚醚多元醇中钠和钾的测定在本标准制定前国内无标准。而钠和钾的含量是聚醚多元醇的重要指标之一,对于分子量大的软泡和弹性体及粘合剂所用的聚醚,控制其钾、钠离子含量,对于抑制制品的凝胶将起到很重要的作用。
National Standard GB12008.4-89 “Determination of sodium and potassium in polyether polyols” has been released for implementation. Polyether polyols in the determination of sodium and potassium in this standard before the development of domestic standards. The sodium and potassium content of polyether polyols is an important indicator of one of the high molecular weight soft foam and elastomer and the polyether used in the binder to control its potassium and sodium ion content, Play a very important role.