Method for preparing electronic ink nano capsule

Abstract

The invention relates to the technical field of the preparation of an inorganic chemical material, and particularly relates to a method for preparing an electronic ink nano capsule by utilizing a composite coagulation method. The method comprises the following steps: step 1, modifying the surfaces of electrophoretic particles and preparing an electrophoretic basic solution, namely (1) preparing nano particles, and (2) preparing an electrophoretic solution; and step 2, preparing a gelatin-arabic gum nano capsule by adopting the composite coagulation method. According to the electronic ink nano capsule prepared by adopting the composite coagulation method, in order to achieve a good dispersion property of pigment particles in a prepared dispersion system, the affection of TiO2 concentration, Span-80 concentration and oil red on the particle size of TiO2 in the dispersion system is researched. A research result shows that when the use amount of the TiO2 is 8.0mg / mL, the use amount of the Span-80 is 2.7 percent and the use amount of the oil red is 1.3mg / ml, so that the TiO2 nano particle dispersion system with the good dispersion stability can be achieved. The prepared nano capsule electronic ink is narrow in particle size distribution, and TEM proves that the TiO2 nano particles are wrapped inside a nano capsule.

Description

technical field [0001] The invention relates to the technical field of preparation of inorganic chemical materials, in particular to a method for preparing electronic ink nanocapsules by using a composite coacervation method. Background technique [0002] Compared with microcapsules, nanocapsules have outstanding advantages, and have attracted the attention of researchers because of their unique properties. in many preparation methods. The inner phases of the nanocapsules are all single phases. In fact, nanocapsules with heterogeneous core structures can endow materials with more functions. ZnO nanoparticles were prepared by solvothermal hydrolysis. While preparing nanoparticles, stearic acid was used as a modifier to modify the surface of the particles, thereby preparing a two-phase nanoparticle dispersion system. Thereafter, nanocapsules with a particle size ranging from 100 to 200 nm were prepared by using a miniemulsion method, and applied to electronic ink di...

AI Technical Summary

Problems solved by technology

If there is a serious agglomeration phenomenon between the nanoparticles coated in the internal phase, the particles are prone to sedimentation due to the agglomeration between each other, which will make it difficult for the dual-phase core material to be coated inside the nanocapsules