Equipment and method for preparing microcapsules by liquid-liquid electrostatic micro-jet atomization

Abstract

The invention discloses equipment and a method for preparing microcapsules by liquid-liquid electronic micro-jet atomization. The equipment is provided with a finished product microcapsule reaction collector, wherein a working liquid box, a metal capillary, solidifying liquid and a base electrode are arranged in the inner cavity of the collector; a charging electrode is arranged on the bottom surface in the working liquid box. The method is characterized in that preparation liquid is ejected in an electrostatic atomized drop-shaped mode from the metal capillary under the actions of a high-voltage electric field and uniform pressure, and target droplets with small particle diameters are formed in the solidifying liquid and are solidified into capsules, wherein the particle diameters of the formed microcapsules are uniform in distribution and are high in monodispersity; when the target droplets of a lower layer are formed, the working liquid box, the charging electrode and the metal capillary are integrally moved upward, the preparation liquid forms another layer of droplets in the solidifying liquid, and finally a plurality of layers of droplets which are distributed uniformly are formed. The preparation liquid is atomized and dispersed in the solidifying liquid, so that the drift of the atomized droplets in a falling process can be overcome effectively; the atomized droplets can be prevented from being polluted by other media.

Description

technical field [0001] The invention relates to a technology for preparing microcapsules, in particular to equipment and methods for preparing microcapsules by electrostatic spraying or atomization of micro-jet. Background technique [0002] Microencapsulation technology uses natural or synthetic polymer materials as capsule wall materials, and wraps some reactive, sensitive or volatile liquid or solid drugs, food and chemical raw materials as capsule core materials to make capsules It is a new process and new technology to make micron-scale or nano-scale particle products released at a controlled rate only under specific conditions, and to control the time and quantity of release and action of the capsule core material. Microcapsule products are pre-designed The mechanism of dissolution and release can provide a specific release pattern. Microencapsulation technology has many advantages: it can solidify gas and liquid raw materials that are not easy to process and store, t...

AI Technical Summary

Problems solved by technology

In this method, there is instability in electrostatic cone jet atomization, and the uniformity of the particle size of the formed droplets is still poor, and the droplets are formed in the air, which is easy to be oxidized, polluted, etc., so auxiliary equipment must be added to change this. situation

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