ASTM D4273-1999 标准详情
- 标准号:ASTM D4273-1999
- 中文标题:聚氨基甲酸乙酯原料的试验方法:聚醚多元醇的原羟基含量的测定
- 英文标题:standard test methods for polyurethane raw materials determination of primary hydroxyl content of polyether polyols
- 标准类别:美国材料与试验协会ASTM
- 发布日期:1999
1.1 Test Method A-Fluorine-19 Nuclear Magnetic Resonance Spectroscopy (fluorine-19 NMR), measures the primary hydroxyl content in ethylene oxide-propylene oxide polyethers used in flexible urethane foams. It is suitable for polyethers with hydroxyl
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