| 有机羧酸改性氮化铝粉体的抗水解性能 |
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| 引用本文： | 郭兴忠,杨辉,张玲洁,马奇,高黎华,傅培鑫.有机羧酸改性氮化铝粉体的抗水解性能[J].化工学报,2008,59(9):2412-2415. |
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| 作者姓名： | 郭兴忠 杨辉 张玲洁 马奇 高黎华 傅培鑫 |
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| 作者单位： | 浙江大学材料科学与工程学系;浙江东新密封有限公司 |
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| 基金项目： | 教育部高等学校博士学科点专项科研基金，浙江省科技攻关项目 |
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| 摘 要： | 采用有机羧酸和PEG作为表面活性剂对工业AlN粉体进行表面改性处理，研究了改性前后AlN粉体的抗水解特性以及表面改性机制。研究结果表明，AlN表面与水分子发生化学反应，导致溶液的pH值迅速提高，表面包覆有机羧酸可有效地改善AlN粉体的抗水解性能；AlN粉体在水中浸泡48h后，氮含量基本保持不变，除了AlN晶相外，没有其他晶相出现，且改性粉体在高剪切应力的水基球磨介质中也保持较强的稳定性。
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| 关 键 词： | 氮化铝粉体 表面改性 有机羧酸 抗水解 |
| 收稿时间： | 2007-10-21 |
| 修稿时间： | 2008-2-20
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Hydrolysis resistance of aluminum nitride powder modified by organic carboxylic acid |
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| GUO Xingzhong,YANG Hui,ZHANG Lingjie,MA Qi,GAO Lihua,FU Peixin.Hydrolysis resistance of aluminum nitride powder modified by organic carboxylic acid[J].Journal of Chemical Industry and Engineering(China),2008,59(9):2412-2415. |
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| Authors: | GUO Xingzhong YANG Hui ZHANG Lingjie MA Qi GAO Lihua FU Peixin |
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| Abstract: | 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. |
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| Keywords: | aluminum nitride powder surface modification organic carboxylic acid hydrolysis resistance |
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