Ultrafine electrophoretic coating and preparation method thereof

A technology for electrophoretic coatings and pigments, applied in electrophoretic coatings, epoxy resin coatings, coatings, etc., can solve the problem that the selection is still in the research stage, and achieve the effect of reducing the particle size of solid particles and improving the tinting strength

Inactive Publication Date: 2017-07-14
KEDE CHEM IND SHUNDE
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of science and technology and the increasing progress of production tools, the research on existing electrophoretic coatings can start from the direction of formulation and solid particle size. The particle size of solid particles in existing ordinary electrophoretic coatings is generally 10-30 microns , and the formulation and particle size selection of electrophoretic coatings with smaller solid particle sizes are still in the research stage. Therefore, it is necessary to provide an ultra-fine electrophoretic coating to meet market and industrial needs and further improve the performance of electrophoretic coatings

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

preparation example Construction

[0044] Correspondingly, the present invention also provides a kind of preparation method of ultrafine electrophoretic paint, comprises the following steps:

[0045] (1) Weigh epoxy resin, diisocyanate, pigment, propylene glycol methyl ether acetate, sodium triethylamine sulfonate, butanone and deionized water according to the proportion;

[0046] (2) Add the above-mentioned solid raw materials into a mortar and grind them finely, and make a pre-dispersion liquid, stir well, and use an emulsifier to pre-disperse for 15 minutes to prepare a mixture;

[0047] (3) Use a high-pressure micro-fluidic nano-disperser to operate the mixture at 220V and 0.38A for 20-40min to prepare an ultra-fine electrophoretic coating.

[0048] Preferably, the ratio of raw materials in the step (1) by weight is:

[0049] 270-290 parts of epoxy resin;

[0050] 10-12 parts of diisocyanate;

[0051] Pigment 235-257 parts;

[0052] 3-5 parts of propylene glycol methyl ether acetate;

[0053] 1-2 parts...

Embodiment

[0059] Adopt the ultrafine electrophoretic paint A that formula and preparation method of the present invention make;

[0060] Use ultra-fine electrophoretic coating A to prepare color paste and emulsion, and prepare electrophoresis tank solution A1 according to color paste: emulsion: deionized water = 1:3:4 (mass ratio);

[0061] Use a phosphating steel plate as the substrate and place it in the electrophoresis tank solution A1, electrophoresis at 60V and 28-30°C for 3 minutes, wash the surface with pure water, and bake at 180°C for 30 minutes to prepare the coating film A2.

reference example

[0063] Electrophoretic coating B prepared by adopting the formula of the present invention and conventional methods (without using a high-pressure micro-jet nanodisperser to refine it);

[0064]Use ultra-fine electrophoretic coating B to prepare color paste and emulsion, and prepare electrophoresis tank solution B1 according to color paste: emulsion: deionized water = 1:3:4 (mass ratio);

[0065] Use a phosphating steel plate as the substrate and place it in the electrophoresis bath B1, electrophoresis at 60V and 28-30°C for 3 minutes, wash the surface with pure water, and bake at 180°C for 30 minutes to prepare the coating film B2.

[0066] 2. Test method

[0067] 1. Conductivity detection standard: HG / T3335-1997 (1985) "Electrophoretic Paint Conductivity Determination Method": EDTM-02 "Conductivity Determination Method".

[0068] 2. Coulombic efficiency detection is based on the standard: HG / T3337-1977 (1985) "Determination of Coulombic efficiency of electrophoretic paint"....

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
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses an ultrafine electrophoretic coating, which is prepared by steps of fully mixing mixtures by a high pressure microjet nano-dispersion instrument, dispersing and reducing particle size of particles. The mixtures contain the following raw materials (by weight): 270-290 parts of epoxy resin, 10-12 parts of diisocyanate, 235-257 parts of a pigment, 3-5 parts of propylene glycol methyl ether acetate, 1-2 parts of sodium triethylamine benzenesulfonate, 3-5 parts of butanone and 45-50 parts of deionized water. The invention also discloses a preparation method of the ultrafine electrophoretic coating. By the adoption of the invention, storage stability, tinting strength and covering power of the coating can be raised, viscosity can be reduced, and the coating is convenient for construction.

Description

technical field [0001] The invention relates to the field of electrophoretic paint, in particular to an ultrafine electrophoretic paint; correspondingly, the invention also relates to a preparation method of the ultrafine electrophoretic paint. Background technique [0002] With the rapid development of science and technology and the increasing progress of production tools, the research on existing electrophoretic coatings can start from the direction of formula and solid particle size. The particle size of solid particles in existing ordinary electrophoretic coatings is generally 10-30 microns , and the formulation and particle size selection of electrophoretic coatings with smaller solid particle sizes are still in the research stage. Therefore, it is necessary to provide an ultra-fine electrophoretic coating to meet market and industrial needs and further improve the performance of electrophoretic coatings. Contents of the invention [0003] The technical problem to be ...

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 & AuthorityApplications(China)
IPC IPC(8): C09D5/44C09D163/00C09D7/12
CPCC09D5/4434C09D5/4457
Inventor李文庄高睿何愿文邓仲明刘雪萍
OwnerKEDE CHEM IND SHUNDE