季戊四醇型磷酸酯系列中有效磷含量的分析方法研究  

Determination of Effective Phosphorous from Pentaerythritol Phosphate

作　　者：杨昀[1] 谌芳[1] 陈石[1] 

机构地区：[1]云南省化工研究院,云南昆明650228

出　　处：《云南化工》2008年第3期49-54,共6页Yunnan Chemical Technology

摘　　要：季戊四醇可与磷化物合成得到含磷阻燃剂和抗氧化剂两类磷酸酯,通过检测"有效磷含量"可以获知反应进行的有效程度。为及时准确提供能反映合成客观实际的分析数据以配合工艺调整的需要,基于磷的经典分析测试,建立了能适应各种合成条件的总磷、游离磷、还原态磷等磷含量的分析方法,提出"有效磷含量"概念:有效磷含量=总磷含量-游离磷含量-还原态磷含量。实验表明,在工艺探索阶段,两类磷酸酯的总磷含量既包含了游离磷含量又包含了还原态磷含量;当还原态磷含量和游离磷含量升高时,说明工艺控制不稳定;在优化后的工艺条件下,含磷阻燃剂中游离磷和还原态磷含量低至可忽略不计,其总磷含量可视为有效磷含量;含磷抗氧化剂中仍可检出游离的还原态磷含量。Determination of total phosphorous, free phosphorous and reduction state phosphorous was founded to provide analytical data for the synthesis of pentaerythritol phosphate and to adjust the process, and concept ＂effective phesphorous＂ was put forward as deduction of free and reduction state phesphorous from total phosphorous. Result showed that total phosphorous contained both free and reduction state phosphorous in the process exploration. The control of process was unstable when the content of free and reduction state phosphorous was increased. The total phosphorous from phosphorous flame retardants could be recognized as effecitive phosphorous under the optimal condition, where the content of free and reduction state phosphorous couldnt be detected, whereas reduction state phosphorous from phosphorous antioxidant was still existed.

关 键 词：季戊四醇型磷酸酯 有效磷 总磷 游离磷 还原态磷 含量 示差分光光度法 

分 类 号：O656[理学—分析化学] O657[理学—化学]