超临界流体快速膨胀法制备红磷微胶囊阻燃剂  

Research on red phosphorus microencapsulation flame retardant prepared by SCF-RESS

作　　者：张发兴[1] 刘亚青[2] 卫晓利[3] 徐峥[1] 

机构地区：[1]中北大学化工与环境学院,山西太原030051 [2]中北大学材料科学与工程学院,山西太原030051 [3]中北大学理学院,山西太原030051

出　　处：《化工进展》2007年第5期690-694,共5页Chemical Industry and Engineering Progress

基　　金：国家自然科学基金资助项目(No.50303005)

摘　　要：采用超临界流体快速膨胀法,利用自制特殊喷嘴制备红磷微胶囊阻燃剂。实验研究了喷嘴温度、膨胀前釜内温度、红磷粒子质量流量以及釜内压力对包覆效果的影响。结果表明,当喷嘴温度和高压釜内温度相等,即Tf=T=120℃,红磷质量流量Vm=1.5g/min,釜内压力p≥16MPa时,红磷微胶囊粒子包覆效果较理想。Red phosphorus microencapsulation flame retardant was prepared by Supercritical Huid-Rapid Expansion of Supercritical Solutions （SCF-RESS）, using a self-made special nozzle. The influences of temperature of the nozzle, temperature in the high-pressure kettle, molar flux of the red phosphorus particles and pressure in the kettle on coating effect were discussed. The results showed that red phosphorus microencapsulation particles were prepared when both temperature in the kettle and temperature of the nozzle were 120 ℃, molar flux of red phosphorus particles was 1.5 g/min, and pressure in kettle was more than 16 MPa.

关 键 词：超临界流体 喷嘴 包覆 红磷 微胶囊 

分 类 号：TQ460.6[化学工程—制药化工]