Study of Polyacrylic Acid Dispersing Pb-Sn-CNTs Composite Plating Solution

摘要

Polyacrylic acid (PA) was used as dispersant to disperse carbon nanotubes(CNTs) composite plating solution. Dispersion effect was characterized by measuring the absorbance value of the suspension. The relationship between the volume percentage of PA and the suspension of absorbance value was remarked; the relationship between the ultrasonic vibration time and the absorbance value were studied too. The results indicated that PA could disperse CNTs suspension effectively. When the optimum amount of PA was added into the suspension, the experiments showed that it had some dispersion stability, the narrow particle size distribution and small average particle diameter. The surface quality of the slide bearings were significantly improved as well.