无机阻燃剂包覆笼状磷酸酯微胶囊的制备与表征  

Synthesis and characterization of caged phosphate microparticles coated with inorganic flame retardant

作　　者：房晓敏[1,2] 刘麦女[1] 张璞 余丽丽[1] 徐元清[1,2] 丁涛[1,2] 任艳蓉[1] 

机构地区：[1]河南大学化学化工学院精细化学与工程研究所,河南开封475004 [2]河南省高校阻燃材料工程技术研究中心,河南开封475004

出　　处：《现代化工》2013年第1期48-51,共4页Modern Chemical Industry

基　　金：河南省科技厅重点攻关项目(092102210210);河南省教育厅攻关项目(2009A150002)

摘　　要：采用沉积法分别制备了以无机阻燃剂氢氧化镁、氢氧化铝和二氧化硅为壁材的3种笼状磷酸酯微胶囊阻燃剂。对包覆反应条件进行了优化,并用扫描电镜(SEM)、X-射线电子能谱(XPS)、傅里叶变换红外(FTIR)及热分析(TG)对目标产品进行了分析。研究结果表明,3种目标产物的初始热分解温度与无机物壁材的热稳定性密切相关,但在高温下均有较好的热稳定性。并且无机阻燃剂壁材和芯材之间有较好的协同作用,能促进笼状磷酸酯成炭。在800℃,氢氧化镁、氢氧化铝和二氧化硅包覆微胶囊的残炭率分别达43%、56%和59%。Three kinds of caged-phosphate microparticle coated with magnesium hydroxide （MH）, aluminium hydroxide （ATH） and silicon dioxide, respectively, are prepared through precipitation method. The reaction conditions are optimized. The target compounds is characterized by scanning electronic microscope （ SEM）, X-ray Photoelectron Spectroscopy（ XPS）, fourier transform infrared spectroscopy （ FFIR ） and thermal gravimetric analysis （ TGA ）. The results indicate that the initial decomposition temperatures of all the micropartieles are closely interrelated with the thermal stability of the shell material. At temperature above 365℃ they all exhibit excellent thermal stability. And there is good synergistic effect between inorganic flame retardant with phosphate which can promote the char formation. The char yield at 800℃ is 43% ,56% and 59% for microparticle coated with MH,ATH and SiO2 ,respectively.

关 键 词：笼状磷酸酯 无机阻燃剂 微胶囊 耐热性 

分 类 号：TQ265[化学工程—有机化工]