337P日本大胆欧美裸体艺术_久久久久精品无码专区_一个人看的免费视频WWW中文字幕_欧美熟妇精品视频网免费观看
第 37 卷第 3 期Vol. 37 No. 3
2007 年 6 月Jun 2007

所屬欄目:功能材料

超微細改性氫氧化鋁的工藝研究
余蔚蔚,皮銀安,林 煉,李海屏,楊述明,朱 源 (湖南化工研究院,湖南 長(cháng)沙 410007)
摘 要:采用改進(jìn)的精制拜爾法制備超微細改性氫氧化鋁,在種分過(guò)程中加入分散改性劑,解決了粒子團聚問(wèn)題,提高了產(chǎn)品質(zhì)量,實(shí)現粒子的表面改性,使晶種能多次循環(huán)使用,有效地降低了成本。優(yōu)惠工藝條件為:αk=1.4、晶種系數1.5、分解溫度40℃、分解時(shí)間為4 h時(shí),分解率53.68%,產(chǎn)品的平均粒徑0.50 μm。
關(guān)鍵詞:氫氧化鋁;超微細;晶種分解;分散改性劑
中圖分類(lèi)號:TF803.22  文獻標識碼:A  文章編號:1009-9212(2007)03- 0063-04
A Study on Ultrafine Modified Aluminum Hydroxide
YU Wei-wei,PI Yin-an,LIN Lian,LI Hai-ping,YANG Shu-ming,ZHU Yuan (Hunan Reasearch Insititute of Chemical Industry,Changsha 410007,China)
Abstract:The ultrafine modified aluminum hydroxide was prepared using the improved fine Bayer method. Results showed that average grain diameter and dispersion rate was 0.50 μm and 53.86%,respectively,under the optimum conditions such as αk value of sodium aluminate solution1.4,crystal seed coefficient 1.5,dispersion temperature 40℃ and time 4 h,indicating that addition of dispersible modifier in the crystal seed decomposition process could solve the agglomeration problem between the granules,improving the product quality,realizing the granule surface modification to enable the crystal seed recycled use many times,and therefore effectively reduced the cost.
Key words:aluminum hydroxide;ultrafine;crystal seed decomposition;dispersible modifier
作者簡(jiǎn)介:余蔚蔚(1973-),女,湖南常德人,助理研究員,主要從事精細化學(xué)品研究。(E-mail:yuweiwei1992@163.com)
收稿日期:2007-04-29
閱讀全文
337P日本大胆欧美裸体艺术_久久久久精品无码专区_一个人看的免费视频WWW中文字幕_欧美熟妇精品视频网免费观看