作　　者： ; ; ;

机构地区： 青岛科技大学化工学院

出　　处： 《中国造纸》 2012年第1期14-18,共5页

摘　　要： 采用共沉淀法合成了层间阴离子分别为Cl-、NO3-、CO23-和Cl-/NO3-混合离子的镁铝水滑石试样,采用XRD、TG-DTA分析试样的相组成和热性能,并讨论了不同层间阴离子镁铝水滑石对纸张阻燃性能的影响。结果表明,不同层间阴离子的镁铝水滑石粒径均在200～250 nm之间,且具有较高的正电荷密度,结晶度较高,晶相较均一。层间阴离子为Cl-/NO3-的镁铝水滑石的热稳定性最好,热分解残余量最高,为58.74%,其阻燃性能也最好,当其加入量为20%时,阻燃纸的氧指数为26.2%,达到难燃级。 Mg-Al hydrotalcites with different interlayer anions were synthesized by co-precipitation, and used in flame retardant paper as filler. The nature of hydrotalcites and flame-retardant paper were characterized using X-ray diffraction, TG-DTA technique, etc. It was found that different types of Mg-Al hydrotalcites were layered nanoparticles, with perfectly crystallized structure and high cationic charge density. The Mg-Al hydrotalcites have the best thermal stability and flame retardant property while the interlayer anions are Cl^-/NO3^-. The oxygen index of the flame retardant paper is 26.2% when the dosage of Mg/Al-Cl/NO3 LDH is 20%, and the paper belongs to the grade with difficulty to bum.

关 键 词： 层间阴离子 镁铝水滑石 阻燃性能

领　　域： [轻工技术与工程]