有机羧酸改性氮化铝粉体的抗水解性能  

Hydrolysis resistance of aluminum nitride powder modified by organic carboxylic acid

作　　者：郭兴忠[1] 杨辉[1] 张玲洁[1] 马奇[1] 高黎华 傅培鑫 

机构地区：[1]浙江大学材料科学与工程学系,浙江杭州310027 [2]浙江东新密封有限公司,浙江乐清325604

出　　处：《化工学报》2008年第9期2412-2415,共4页CIESC Journal

基　　金：高等学校博士点基金(20070335017);浙江省重大科技攻关项目(2006C11184)~~

摘　　要：Industrial aluminum nitride(AlN) powder was surface modified with organic carboxylic acid and polyethylene glycol (PEG) as surface modifier and the hydrolysis resistance and modifying mechanism of AlN powder before and after modification were studied.The results showed that the hydrolysis reaction to produce NH3 between AlN and H2O led to the rapid increase of pH value of aqueous solution and generation of much Al(OH)3.The surface coating organic carboxylic acid on AlN particles formed a diffusion barrier between water and AlN surface to improve the hydrolysis resistance of AlN. The pH value of AlN powder after modification slightly increased after soaking in water for 48h,but there was no obvious Al(OH)3 generation.The AlN powder after modification kept higher stability in aqueous ball milling at a high cutting stress.Industrial aluminum nitride （A1N） powder was surface modified with organic carboxylic acid and polyethylene glycol （PEG） as surface modifier and the hydrolysis resistance and modifying mechanism of A1N powder before and after modification were studied. The results showed that the hydrolysis reaction to produce NH3 between AlN and H2O led to the rapid increase of pH value of aqueous solution and generation of much AI（OH）3. The surface coating organic carboxylic acid on A1N particles formed a diffusion barrier between water and A1N surface to improve the hydrolysis resistance of A1N. The pH value of A1N powder after modification slightly increased after soaking in water for 48h, but there was no obvious AI（OH）3 generation. The AlN powder after modification kept higher stability in aqueous ball milling at a high cutting stress.

关 键 词：氮化铝粉体 表面改性 有机羧酸 抗水解 

分 类 号：TF125[冶金工程—粉末冶金]