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采用自由基接枝聚合法,将不同极性的单体修饰在黑色无机颜料颗粒表面,以紫外透光率法为主要表征手段,考察了聚合物包覆层的组成结构对颗粒在电泳体系中分散稳定性的影响.结果表明,聚合物修饰后颗粒稳定时间至少提高5倍,且随所用包覆单体侧链长度增大而增大.当单体支链的碳原子数大于4时,颗粒能很好地长时间分散在非水体系中.所制黑白电泳显示器在5V电压下,响应时间小于1s,对比度达(45):1.本结果为提高缺乏理论研究的电泳显示体系的分散稳定性和电泳显示效果及使用寿命提供了研究基础.
Radical grafting polymerization was used to modify the monomer with different polarity on the surface of black inorganic pigment particles. The UV transmittance method was used as the main characterization method. The influence of the composition of the polymer coating on the electrophoresis system Dispersion stability.The results showed that the particle stabilization time of polymer modified at least increased by 5 times and increased with the increase of the length of the side chain of the coated monomer.When the number of carbon atoms of the monomer branch is more than 4, The particles can be well dispersed in non-aqueous system for a long time.The prepared black and white electrophoretic display has a response time of less than 1s at 5V and a contrast ratio of (45): 1. The result is to improve the dispersion of the electrophoretic display system lacking theoretical research Stability and electrophoretic display and life of the research provides the foundation.