摘要
叙述了阻燃聚氨酯软质泡沫塑料中氯含量的测定方法:在助燃剂存在下,氧瓶燃烧使聚氨酯软质泡沫塑料中的有机氯转化为HCl,用稀NaOH吸收,使用硫氰酸汞分光光度法测定聚氨酯软质泡沫塑料中阻燃剂的氯含量。该方法简单快捷、精确度高,回收率为99.64%～102.41%。
The determination method of chlorine content in flexible foams of flame-retarding polyurethane （PU） was discussed： organic chlorine in flexible foams turned into hydrogen chloride by burning the sample with combustion adjuvant in oxygen flask, absorbed hydrogen chloride by NaOH, then the chlorine content in flexible foams of PU could be determined by mercuric thiocyanate spectrophotometric method. The determination method is easy and accurate, the recovery ratio is up to 99.64%～102.41%.
出处
《塑料科技》
CAS
北大核心
2008年第8期74-76,共3页
Plastics Science and Technology
基金
国家自然科学基金资助项目(60672183)
关键词
聚氨酯
软质泡沫塑料
阻燃剂
分光光度法
Polyurethane
Flexible foams
Flame retardant
Spectrophotometric method
