硅烷偶联剂KH550表面改性纳米Al_2O_3的研究  

Study on surface modification of nano-alumina by silane coupling agent KH550

作　　者：单芙蓉[1] 于志明[1] 罗丽丝[1] 张扬[1] 

机构地区：[1]北京林业大学,北京100083

出　　处：《化工新型材料》2013年第5期169-170,185,共3页New Chemical Materials

基　　金：国家"十二五"科技支撑计划(2012BAD24B02)

摘　　要：利用硅烷偶联剂KH550对自制均匀分散的纳米Al2O3进行表面改性。红外光谱分析表明,纳米Al2O3表面成功接枝了KH550。热失重分析得出KH550的最佳用量为2.5%,最佳改性时间为60min,吸附量约为2.394%。透射电镜照片表明,表面改性提高了纳米Al2O3在无水乙醇体系中的分散均匀性,表面由亲水变为亲油。The silane coupling agent KH550 was used to modifing the surface properties of nano-Al2O3. Infrared spectrum analysis showed that KH550 was successfully grafted. TGA results indicated that the optimum dosage of KH550 was 2.5 %, the modification time was 60min, and nearly 2. 394% of KH550 was grafted. TEM photos showed surface modi- fication improved the dispersion uniformity of nano-Al2O3 in anhydrous ethanol. The surface properties was changed from hydrophilic into oleophilie.

关 键 词：纳米AL2O3 表面改性 KH550 

分 类 号：TB383.1[一般工业技术—材料科学与工程]