摘要
采用化学合成法制备了平均聚合度为28的聚磷酸铵(APP)样品,通过球磨-浮选处理后获得200nm左右,粒度均匀的超细APP样品。通过原位聚合法在超细APP表面包覆上三聚氰胺-甲醛树脂,采用透射电子显微镜(TEM)和傅立叶变换红外光谱仪(FT-IR)对包覆前后的超细APP样品进行表征。通过对样品水溶性的研究表明,超细APP的水溶性比微米级APP的水溶性明显增大,而包覆树脂后的超细APP的溶解度可以降低到0.25g/100mL水;示差扫描量热计(DSC)分析表明,经树脂包覆后的超细APP样品其热分解温度与微米级APP相一致,保持了APP的阻燃特性。
Ammonium polyphosphate （APP） sample with an average polymerization degree of 28 was synthesized. Ultra-fine APP sample with particle size of 200nm was prepared through milling-flotation process. Melamine-formaldehyde resin was coated on ultra-fine APP surface by in-situ polymerization. The solubility of extra-fine APP was significantly higher than that of micron-meter APP, while the solubility of coated ultra-fine APP was reduced to 0.25g/ 100mL H2O. The coated ultra-fine APP sample exhibited same thermal property with that of micron-meter APP, indicating that the flare-retardation property remained.
出处
《化工新型材料》
CAS
CSCD
北大核心
2008年第9期84-85,92,共3页
New Chemical Materials
基金
青岛科技大学引进人才科研启动基金资助项目(0022233)
关键词
超细聚磷酸铵
球磨-浮选
包覆
溶解度
热分析
ultra-fine ammonium polyphosphate, millingflotation process, coating, solubility, thermal analysis
