Preparation and Performance Test of Electrophoretic Particles Modified by Nano TiO2

In this paper, nano TiO2 was modified to achieve better dispersion effect and improve the surface charge of nano TiO2, so as to prepare white electrophoretic particles with excellent performance. The surface of nano TiO2 was modified by silane coupling agent, polymer surfactant and polymer coating. The modification of polymer coating was the main modification, and the modification was assisted by silane coupling agent KH-570 and polymer surfactant polyethylpyrrolidone (PVP). TiO2/p(St-DVB-AM) particles with titanium dioxide as core and styrene, divinylbenzene and acrylamide crosslinked polymer as coating layer were prepared by one-pot precipitation polymerization. The experimental results show that TiO2/p (St-DVB-4-AM) particles prepared with 0.4 g AM have the best performance, and the particle size is about 500 nm.