全文下载：2013040342
郝秋芬， 李艳静， 李莉， 李永强， 唐林生*
（青岛科技大学 化工学院，山东 青岛 266042）
摘要: 以柴油（260~280℃馏分）为反应介质，磷酸氢二铵和尿素为原料，聚乙二醇为分散剂，采用分散聚合工艺成功地制备出Ⅱ型难溶聚磷酸铵（APP Ⅱ）。实验结果表明：APP Ⅱ的较优制备条件为：n（尿素）∶n（磷酸二氢铵）=1.1∶1，反应温度为220℃，通入湿氨气反应16 h。在此条件下，制备出的APP氮磷含量分别为w(N)=14.04%，w(P2O5)= 71.06%，100 mL水中溶解度0.50 g。红外光谱与X射线衍射分析证实了产品的晶型。该方法操作容易，工艺过程和所用设备简单，但产品颜色较深。
关键词: Ⅱ型聚磷酸铵；磷酸氢二铵；尿素；分散聚合
中图分类号: TQ 314.24文献标志码： A
Preparation of Ⅱ-form Water-insoluble Ammonium Polyphosphate Via Dispersion Polymerization
HAO Qiu-fen, LI Yan-jing, LI Li,LI Yong-qiang, TANG Lin-sheng
(Colledge of Chemical Engineering,QingdaoUniversityof Science and Technology,Qingdao266042,China)
Abstract: II form ammonium polyphosphate (APP-II) was prepared by a dispersion polymerization process using urea and diammonium hydrogen phosphate (DAP) as raw materials, polyethylene glycols (PEG6000) as a dispersant and diesel oil (260~280 ℃ distillate) as a solvent. The results showed that the optimum conditions of the preparation of APP-II was as follows: n(urea)∶ n(DAP ) = 1.1∶1, the reaction temperature being 220 ℃ and the reaction time being 16h on the introduction of wet ammonia. The APP product obtained has nitrogen content of 14.04%, phosphorus pentoxide content of 71.06%, and 100 mL water solubility of 0.50 g. Its crystal form was confirmed by FT-IR and XRD. This method has merits such as easy operation, simple apparatus used and simple process，but the colour of the product is deep.
Key words: II form ammonium polyphosphate; diammonium hydrogen phosphate; urea; dispersion polymerization
收稿日期：2012-09-02
作者简介： 郝秋芬（1985—），女，硕士研究生. *通信联系人.
