Effect of Sodium Dodecylbenzenesulfonate on Dispersion of SiO2 Nano-powder in Aqueous System

摘要：

　　Good dispersing stability is required for nano-SiO2 which,however,tends easily to conglomerate,to be widely applied as an important functional material of high toughness,high resistance to corrosion and good high-temperature performance.Through ultrasonic treatment,the suspension of SiO2 nano-powder in water was prepared utilizing sodium dodecylbenzenesulfonate (SDBS) as the dispersant.The effect of SDBS content and ultrasonic treatment time on the suspension stability was investigated by way of testing the particle size of SiO2 nano-powder,the Zeta potential and transmittance of the suspension.The results show that with increasing SDBS content,the particle size of SiO2 nanopowder decreases and then increases,which is similar to the case of increasing the ultrasonic treatment time.With optimum SDBS content,the suspension of SiO2 nano-powder possesses a good dispersing stability due to the existence of electrostatic and steric effects resulting from the particular structure of SDBS.The optimum dispersing condition is SDBS of 1.6 wt% with the ultrasonic time of 18 min.

关键词： Nano-SiO2 dispersant stability particle size

作者: Liu Jiyan Ma Shining Qiu Ji Suo Xiangbo

作者单位: Faculty of Remanufacturing Engineering, Academy of Armored Forces Engineering, Beijing 100072, China Faculty of Remanufacturing Engineering, Academy of Armored Forces Engineering, Beijing 100072, China

会议类型: 国际会议

会议名称: The Sixth China International Conference on High-Performance Ceramics(第六届中国先进陶瓷国际研讨会(CICC-6))

会议地点: 哈尔滨

会议语种:英文

页码: 808-811

在线出版日期: 2009-08-16（万方平台首次上网日期，不代表论文的发表时间）