A preparation method of microcapsules for self-healing electrophoretic coating

A technology for electrophoretic coatings and microcapsules, which is applied to electrophoretic coatings, microcapsule preparations, microsphere preparation, etc., can solve the problems of unfavorable capillary siphon effect, failure to achieve self-healing effect, rough surface of microcapsules, etc., and achieve high strength , good shape, smooth surface effect

Active Publication Date: 2021-04-13
ANHUI LINGYANG NEW MATERIAL CO LTD
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of in-situ polymerization, the viscosity of the emulsion is too high, which causes the adhesion between the microcapsules, and the surface of the microcapsules is damaged, resulting in problems such as rough surface of the microcapsules, poor stability, and uneven particle size distribution; The capsule core in the capsule has a high viscosity during the repair process, which is not conducive to the occurrence of capillary siphon effect, so that the self-healing effect cannot be achieved

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A preparation method of microcapsules for self-healing electrophoretic coatings, comprising the following steps:

[0022] (1) SiO 2 Solution preparation:

[0023] Weigh a certain amount of silane coupling agent, SiO 2 , 95% ethanol and absolute ethanol were mixed evenly, and ultrasonically oscillated for 30 minutes, then the mixed solution was transferred to a water bath, stirred at a constant temperature and speed at 55°C for 4 hours, after natural cooling, the obtained mixed solution was centrifuged to remove the supernatant, and the obtained Colloidal SiO 2 ready to use after hydrolysis;

[0024] The consumption of described silane coupling agent is 8%;

[0025] (2) Preparation of urea-formaldehyde resin prepolymer:

[0026] At room temperature, add 5.5g of urea and 12g of formaldehyde solution with a mass fraction of 37% to a three-necked flask for mixing and stirring. When the urea is dissolved, add an appropriate amount of triethanolamine to adjust the pH val...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
quality scoreaaaaaaaaaa
Login to view more

Abstract

The invention discloses a method for preparing microcapsules for self-healing electrophoretic coatings. In the invention, gelatin-modified urea-formaldehyde resin is added as the capsule wall to improve the flexibility of the surface of the self-healing microcapsules, and the obtained microcapsules have good shape, The surface is smooth, the structure is dense, and it has high strength; in the present invention, SiO is treated with silane coupling agent 2 After the surface is grafted to the surface of the urea-formaldehyde resin capsule wall, the SiO formed on the surface of the microcapsules 2 layer, has good barrier properties and strength, thereby reducing the occurrence of microcapsule adhesion, and the prepared microcapsules have good stability and uniform particle size distribution; for the microcapsules prepared by the method of the present invention, n-butylene is added to the capsule core Based on glycidyl ether solvent, it has a good dilution effect on the modified epoxy resin capsule core. Using the principle of siphon effect, the epoxy resin solution can completely penetrate into the damaged part of the entire coating film along the gap, and a crosslinking and curing reaction occurs. So as to achieve a self-healing effect.

Description

technical field [0001] The invention belongs to the technical field of paint preparation, and in particular relates to a preparation method of microcapsules for self-healing electrophoretic paint. Background technique [0002] Cathodic electrophoretic coating is a kind of anti-corrosion coating developed in the mid-1970s. Compared with anodic electrophoretic coating, it has better performance in terms of throwing power and corrosion resistance, and has been applied industrially. During the production or use of the workpiece, problems such as bumps and scratches inevitably occur, which greatly reduces the protective function of the paint and affects the overall anti-corrosion performance of the paint film. Therefore, it is necessary to increase the self-healing ability of the paint film. [0003] In recent years, the application of microcapsules in self-healing materials has become a research hotspot. The advantage of microcapsule technology is that the capsule core can be w...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): B01J13/14C09D5/44C09D7/62C08G14/08C08K3/36
CPCB01J13/14C08G14/08C08K3/36C09D5/448
Inventor 刘玉胡强陈小琴
Owner ANHUI LINGYANG NEW MATERIAL CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products