CN-118308906-B - Modification method for surface wettability of microcup electronic paper

Abstract

The invention relates to a method for modifying the wettability of the surface of microcup electronic paper, and belongs to the technical field of wettability modification. The modification method disclosed by the invention is mainly characterized in that the microcup electronic paper is soaked in a silane coupling agent solution, water is added after ultrasonic treatment, the microcup electronic paper is taken out after ultrasonic treatment is continued, and the microcup electronic paper subjected to surface modification is obtained after cleaning and drying. The modification method can be used for solving the problems, has the characteristics of simple process flow, easily available raw materials, wide application range and the like, and can be applied to the production of micro-cup electronic paper in large scale.

Inventors

• CUI YUEHUA
• ZUO ZHUO
• HUANG RUI
• YUAN JIAHU

Assignees

• 中国科学院重庆绿色智能技术研究院
• 重庆京东方智慧电子系统有限公司

Dates

Publication Date

20260505

Application Date

20240506

Claims (4)

1. 1. The modification method of the surface wettability of the microcup electronic paper is characterized by comprising the following steps: (1) Soaking the microcup electronic paper in a silane coupling agent solution, and performing ultrasonic treatment at 40-100 kHz for 0.5-20 min to obtain a solution for soaking the microcup electronic paper, wherein the silane coupling agent solution is prepared by adding the silane coupling agent into absolute ethyl alcohol, and performing ultrasonic treatment to completely dissolve the silane coupling agent to obtain a silane coupling agent solution with the volume concentration of 0.1-10%; (2) Adding water into the solution for soaking the microcup electronic paper after the ultrasonic treatment in the step (1) is finished, and carrying out ultrasonic treatment for 0.5-3 min at 40-100 kHz; (3) And (3) taking out the treated micro-cup electronic paper after the ultrasonic treatment in the step (2), cleaning with absolute ethyl alcohol, and drying to obtain the micro-cup electronic paper with the surface modified.
2. 2. The method according to claim 1, wherein in the step (1), the material of the microcup-type electronic paper is any one of polyester, polyolefin and polyimide.
3. 3. The method according to claim 1, wherein in the step (1), the silane coupling agent is any one of 3-aminopropyl triethyloxy silane, 3- (methacryloxy) -propyl trimethoxy silane, N-hexyl trimethoxy silane, phenyl triethoxy silane, or N-dodecyl trimethoxy silane.
4. 4. The modification method according to claim 1, wherein in the step (2), the volume ratio of the solution for immersing the microcup-type electronic paper to water is 10..5 to 100. Ml..μl.

Description

Modification method for surface wettability of microcup electronic paper Technical Field The invention belongs to the technical field of electronic paper modification, and relates to a modification method of the surface wettability of microcup electronic paper. Background The traditional electronic display has the defects of high power consumption and thick size, and is easy to fatigue eyes and cause eye diseases in the using process. The electronic paper based on the electrophoretic display technology uses reflected light to develop color, and has the advantages of no eye injury, low power consumption and light and thin size, so the electronic paper is a novel display. Microcup electronic paper is the main technical direction of current electronic paper display, but microcup electronic paper has the problem of difficult electrophoretic fluid filling. Because the materials commonly used for microcup fabrication are hydrophilic materials, the electrophoretic fluid is an organic solvent system, and the microcup size is on the scale of a few microns to tens of microns. Therefore, the electrophoresis liquid cannot be poured into the microcups, and the color development effect and the service life of the electronic paper are affected. Therefore, the wettability of the surface of the microcups is modified, so that the better wettability of the electrophoretic fluid on the surface of the microcups becomes an important direction for optimizing the production process of the electronic paper. Disclosure of Invention In view of the above, the present invention aims to provide a method for modifying the wettability of the surface of a microcup electronic paper. In order to achieve the above purpose, the present invention provides the following technical solutions: 1. the modification method of the surface wettability of the microcup electronic paper comprises the following steps: (1) Soaking the microcup electronic paper in a silane coupling agent solution, and performing ultrasonic treatment at 40-100 kHz for 0.5-20 min to obtain a solution for soaking the microcup electronic paper (2) Adding water into the solution for soaking the microcup electronic paper after the ultrasonic treatment in the step (1) is finished, and carrying out ultrasonic treatment for 0.5-3 min at 40-100 kHz; (3) And (3) taking out the treated micro-cup electronic paper after the ultrasonic treatment in the step (2), cleaning with absolute ethyl alcohol, and drying to obtain the micro-cup electronic paper with the surface modified. Preferably, in the step (1), the silane coupling agent solution is prepared by adding the silane coupling agent into absolute ethyl alcohol, and performing ultrasonic treatment to completely dissolve the silane coupling agent, so as to prepare the silane coupling agent solution with the volume concentration of 0.1% -10%. Preferably, in the step (1), the material of the microcup-type electronic paper is any one of polyesters, polyolefins and polyimides. Preferably, in the step (1), the silane coupling agent is any one of 3-aminopropyl triethyloxy silane, 3- (methacryloxy) -propyl trimethoxy silane, N-hexyl trimethoxy silane, phenyl triethoxy silane or N-dodecyl trimethoxy silane. Preferably, in the step (2), the volume ratio of the solution for soaking the microcup electronic paper to water is 10..5-100, and mL..mu.L. The invention has the beneficial effects that the invention discloses a method for modifying the surface wettability of the electronic paper of a micro-cup, which is mainly characterized in that the micro-cup is soaked in a silane coupling agent solution, water is added after ultrasonic treatment, the micro-cup is taken out after ultrasonic treatment is continued, and the micro-cup with the surface modified is obtained after cleaning and drying. The modification method can be used for solving the problems, has the characteristics of simple process flow, easily available raw materials, wide application range and the like, and can be applied to the production of microcups in large scale. Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objects and other advantages of the invention may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification. Drawings For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in the following preferred detail with reference to the accompanying drawings, in which: Fig. 1 is a schematic flow chart of a surface modification process of a micro-cup electronic paper provided in an embodiment of the invention; FIG. 2 is a graph showing the effect of mixed electrophoretic fluid on the surface of