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| 金红石型钛白粉表面包覆氧化铝的形态及机理 | |
| 引用本文： | 康春雷,李春忠,王志庭,于明,汪齐方,方图南.金红石型钛白粉表面包覆氧化铝的形态及机理[J].华东理工大学学报(自然科学版),2001,27(6):631-634,660. |
| 作者姓名： | 康春雷 李春忠 王志庭 于明 汪齐方 方图南 |
| 作者单位： | 1. 华东理工大学超细材料制备与应用教育部重点实验室,上海200237 2. 石家庄宝石电气硝子玻璃有限公司,石家庄050053 3. 上海氯碱化工股份有限公司,上海200241 |
| 基金项目： | 国家“九五”重点科技攻关项目 ( 96 -5 5 4-0 2 )，国家自然科学基金重点项目 ( 2 96 36 0 10 )，上海市科技启明星基金项目 ( 0 0 QE14 0 45 ) |
| 摘 要： | 探讨了以H2SO4和CH2OHCH2Cl为酸解介质时，氯化法金红石型钛白粉表面包铝的行为及形态特征。利用正交实验研究了包膜过程中，熟化pH、熟化时间以及温度对包铝钛白粉白度的影响。氯化法金红石型钛白粉浆在pH为10时，Zeta电位最大，在水中达到最佳分散，利用H2OHCH2Cl作为酸解介质时，浆液中的均相成核得到显著抑制，钛白粉表面的包膜质量得到明显改善。以稀硫酸作为酸解介质时，随熟化温度升高和熟化时间的延长，钛白粉包覆效果明显改善，白度值明显升高。 |
| 关 键 词： | 金红石 钛白粉 包膜机理 氧化铝 表面包覆 氧化法 表面处理 形态特征 |
| 文章编号： | 1006-3080(2001)06-0631-04 |
Morphology and Mechanism of Rutile Titanium Dioxide Powder Coated by Aluminium Oxide |
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| KANG Chun lei ,LI Chun zhong ,WANG Zhi ting ,YU Ming ,WANG Qi fang ,FANG Tu nan.Morphology and Mechanism of Rutile Titanium Dioxide Powder Coated by Aluminium Oxide[J].Journal of East China University of Science and Technology,2001,27(6):631-634,660. | |
| Authors: | KANG Chun lei LI Chun zhong WANG Zhi ting YU Ming WANG Qi fang FANG Tu nan |
| Institution: | KANG Chun lei 1,LI Chun zhong 1*,WANG Zhi ting 2,YU Ming 3,WANG Qi fang 1,FANG Tu nan 1 |
| Abstract: | The morphology and mechanism of rutile titanium dioxide coated by aluminum oxide were investigated and the effects of pH and reaction temperature were studied experimentally. The results indicate that the dispersions of titanium dioxide powder possesses a highest Zeta potential when pH closed to 10, and at this condition titanium dioxide powder is able to be dispersed best in water. Uniform thin film is formed on titanium dioxide particles at high reaction time and temperature, and also when CH 2OHCH 2Cl is used instead of H 2SO 4. The white value increases with the increase of the reaction temperature and time. |
| Keywords: | rutile titanium dioxide coatings alumina |
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