CN114410140A - Coating and preparation method thereof - Google Patents

Abstract

A coating and a preparation method thereof comprise a raw material component mixture A, 40-45 parts of titanium dioxide sol, 15-20 parts of isocyanate, 30-40 parts of polyethylene glycol, 10-15 parts of cosolvent, 5-8 parts of talcum powder, 7-12 parts of silicon dioxide dispersion liquid, 5-15 parts of aluminum silicate fiber, 1.5-2 parts of isobutyl acrylate, 5-10 parts of allyl phosphate, 20-30 parts of copper pyrithione, 10-20 parts of film forming agent, 1.6-2 parts of dispersant and 1-5 parts of polyethyleneimine, and the coating is prepared under the coordination of preparation process steps and technical parameters and at least has the following advantages: the paint has the advantages of high glossiness, high temperature resistance, good surface hardness, high corrosion resistance, good adhesiveness, difficult shedding, strong contact adhesive force with the metal surface, high paint film hardness, good coloring effect, difficult agglomeration, suitability for surface treatment decoration of various metals, good comprehensive performance even in a high-temperature environment and obvious improvement on the performance of the paint.

Description

Coating and preparation method thereof

Technical Field

The invention belongs to the field of coatings, and particularly relates to a coating and a preparation method thereof.

Background

In industrial production and daily life, a coating is often used, which is a continuous film coated on the surface of a protected or decorated object and can be firmly attached to the object to be coated, so as to protect and increase the use performance of the product. The protection of metal materials which are easy to corrode or rust needs to be protected by coating, and particularly, the iron products need to be sprayed for improving the service performance and preventing rust, so that the iron products have high gloss, high temperature resistance, good surface hardness and high corrosion resistance. However, although the coating in the current market has the corrosion resistance and can protect the metal surface, the actual application effect is not ideal, the gloss is poor, the adhesion is poor, the coating is easy to fall off under the high-temperature condition, the surface hardness and the corrosion resistance are insufficient, the paint film hardness of the coating is not high, the coating does not have a good coloring effect, and the coating is easy to agglomerate and cannot achieve the effect expected by people.

Disclosure of Invention

The paint is prepared by matching specific raw materials of a mixture A, a mixture B, a mixture C and a mixture D with components, reasonable preparation steps and technical parameters, has high glossiness, high temperature resistance, good surface hardness and high corrosion resistance, is suitable for surface treatment decoration of various metals, has good comprehensive performance even in a high-temperature environment, has good adhesion, is not easy to fall off, has strong contact adhesive force with the metal surface, has high paint film hardness, is not easy to damage, also has a good coloring effect, is not easy to agglomerate, and obviously improves the performance of the paint.

The invention is realized by the following technical scheme: the coating comprises the following raw materials in parts by weight: the coating comprises, by weight, 10-20 parts of a mixture A, 40-45 parts of titanium dioxide sol, 15-20 parts of isocyanate, 30-40 parts of polyethylene glycol, 10-15 parts of a cosolvent, 5-8 parts of talcum powder, 7-12 parts of silica dispersion, 5-15 parts of aluminum silicate fiber, 1.5-2 parts of isobutyl acrylate, 5-10 parts of allyl phosphate, 20-30 parts of copper pyrithione, 10-20 parts of a film forming agent, 1.6-2 parts of a dispersing agent and 1-5 parts of polyethyleneimine.

The mixture A is 1.5-2 parts of polyoxypropylene glycerol ether, 10-15 parts of silica sol, 10-20 parts of deionized water and 10-20 parts of isobutyl acrylate, and is prepared by stirring and dispersing for 20-25 min at normal temperature.

The mixture A is 1.5-2 parts of polyoxypropylene glycerol ether, 10-15 parts of silica sol, 10-20 parts of deionized water, 10-20 parts of isobutyl acrylate and 5-10 parts of conductive mica powder, static electricity is introduced into an insulating plastic barrel, and stirring and dispersing are carried out for 20-25 min, so that the conductive mica powder is prepared.

The titanium dioxide sol is nano titanium dioxide sol.

The cosolvent is any one of sodium salicylate and p-aminobenzoic acid.

A preparation method of the coating comprises the following steps: (1) step 1: adding 1.5-2 parts of polyoxypropylene glycerol ether, 10-15 parts of silica sol, 10-20 parts of deionized water and 10-20 parts of isobutyl acrylate into a first reaction container, and stirring and dispersing for 20-25 min at normal temperature to obtain a mixture A for later use.

(2) Step 2: and (2) adding 40-45 parts of titanium dioxide sol, 15-20 parts of isocyanate and 30-40 parts of polyethylene glycol into a second reaction container, heating to 50 ℃, stirring for 30min, adding the mixture A obtained in the step (1), and stirring and dispersing for 30-40 min to obtain a mixture B.

(3) And step 3: and (3) adding 10-15 parts of cosolvent and 5-8 parts of talcum powder into the mixture B obtained in the step (2), and stirring and dispersing for 20-30 min until the whole system is uniformly mixed to obtain a mixture C.

(4) And 4, step 4: adding 7-12 parts of silicon dioxide dispersion liquid and 1.5-2 parts of isobutyl acrylate into a third reaction container, heating to 50-60 ℃, stirring for 15min, adding 5-10 parts of allyl phosphate and 5-15 parts of aluminum silicate fiber into the reaction container, keeping the temperature at 50-60 ℃, stirring for 30min, adding the mixture C obtained in the step (3), stirring and dispersing for 30-40 min, and mixing the whole system uniformly to obtain a mixture D.

(5) And 5: and (4) adding 20-30 parts of copper pyrithione, 10-20 parts of film forming agent, 1.6-2 parts of dispersing agent and 1-5 parts of polyethyleneimine into the mixture D obtained in the step (4), and stirring and dispersing for 10-15 min under the stirring condition of 600-800 rpm to obtain the coating.

The invention has the beneficial effects that: a coating is prepared from a specific raw material component mixture A, titanium dioxide sol, isocyanate, polyethylene glycol, a cosolvent, talcum powder, silicon dioxide dispersion liquid, aluminum silicate fiber, isobutyl acrylate, allyl phosphate, copper pyrithione, a film-forming agent, a dispersing agent, polyethyleneimine and polyoxypropylene glycerol ether by matching preparation process steps and technical parameters, and has at least the following advantages: the paint has the advantages of high glossiness, high temperature resistance, good surface hardness, high corrosion resistance, good adhesiveness, difficult shedding, strong contact adhesive force with the metal surface, high paint film hardness, good coloring effect, difficult agglomeration, suitability for surface treatment decoration of various metals, good comprehensive performance even in a high-temperature environment and obvious improvement on the performance of the paint.

Detailed Description

The present invention will be described in detail below with reference to examples.

The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products commercially available.

In the following embodiments 1 to 3, the prepared coating is coated on the surface of a metal material which is easy to corrode or other materials which need a protective layer, so that a coating is formed, and the coating has the advantages of good adhesiveness, difficult shedding, strong contact adhesive force with the metal surface, high paint film hardness and good comprehensive performance. In the embodiment 4, the prepared coating is sprayed on the surface of a metal material which is easy to corrode by using an electrostatic spraying gun to form a coating which has good adhesiveness, is not easy to fall off, has strong contact adhesive force with the metal surface, has high film hardness and has good comprehensive performance.

Example 1: the coating comprises the following raw materials in parts by weight: the coating comprises, by weight, 10-20 parts of a mixture A, 40-45 parts of titanium dioxide sol, 15-20 parts of isocyanate, 30-40 parts of polyethylene glycol, 5-8 parts of talcum powder, 7-12 parts of silicon dioxide dispersion liquid, 5-15 parts of aluminum silicate fiber, 1.5-2 parts of isobutyl acrylate, 5-10 parts of allyl phosphate, 20-30 parts of copper pyrithione, 10-20 parts of a film forming agent, 1.6-2 parts of a dispersing agent, 1-5 parts of polyethyleneimine and 1.5-2 parts of polyoxypropylene glycerol ether.

The mixture A is 1.5-2 parts of polyoxypropylene glycerol ether, 10-15 parts of silica sol, 10-20 parts of deionized water and 10-20 parts of isobutyl acrylate, and is prepared by stirring and dispersing for 20-25 min at normal temperature.

The titanium dioxide sol is nano titanium dioxide sol.

The cosolvent is any one of sodium salicylate and p-aminobenzoic acid.

The preparation method comprises the following steps: (1) step 1: adding 1.5-2 parts of polyoxypropylene glycerol ether, 10-15 parts of silica sol, 10-20 parts of deionized water and 10-20 parts of isobutyl acrylate into a first reaction container, and stirring and dispersing for 20-25 min at normal temperature to obtain a mixture A for later use.

(2) Step 2: and (2) adding 40-45 parts of titanium dioxide sol, 15-20 parts of isocyanate and 30-40 parts of polyethylene glycol into a second reaction container, heating to 50 ℃, stirring for 30min, adding the mixture A obtained in the step (1), and stirring and dispersing for 30-40 min to obtain a mixture B.

(3) And step 3: and (3) adding 10-15 parts of cosolvent and 5-8 parts of talcum powder into the step (2), stirring and dispersing for 20-30 min until the whole system is uniformly mixed, and thus obtaining a mixture C.

(4) And 4, step 4: adding 7-12 parts of silicon dioxide dispersion liquid and 1.5-2 parts of isobutyl acrylate into a third reaction container, heating to 50-60 ℃, stirring for 15min, adding 5-10 parts of allyl phosphate and 5-15 parts of aluminum silicate fiber into the reaction container, keeping the temperature at 50-60 ℃, stirring for 30min, adding the mixture C obtained in the step (3), stirring and dispersing for 30-40 min, and mixing the whole system uniformly to obtain a mixture D.

(5) And 5: and (4) adding 20-30 parts of copper pyrithione, 10-20 parts of film forming agent, 1.6-2 parts of dispersing agent and 1-5 parts of polyethyleneimine into the mixture D obtained in the step (4), and stirring and dispersing for 10-15 min under the stirring condition of 600-800 rpm to obtain the coating.

Example 2: the coating comprises the following raw materials in parts by weight: the coating comprises, by weight, 13-17 parts of a mixture A, 41-44 parts of titanium dioxide sol, 16-18 parts of isocyanate, 33-37 parts of polyethylene glycol, 12-14 parts of a cosolvent, 6-8 parts of talcum powder, 8-10 parts of silica dispersion, 8-13 parts of aluminum silicate fiber, 1.6-1.8 parts of isobutyl acrylate, 6-8 parts of allyl phosphate, 23-27 parts of copper pyrithione, 13-16 parts of a film forming agent, 1.7-1.9 parts of a dispersing agent, 2-4 parts of polyethyleneimine and 1.6-1.8 parts of polyoxypropylene glycerol ether.

The mixture A is 1.6-1.8 parts of polyoxypropylene glycerol ether, 11-13 parts of silica sol, 14-17 parts of deionized water and 13-17 parts of isobutyl acrylate, and is prepared by stirring and dispersing for 20-25 min at normal temperature.

The preparation method comprises the following steps: (1) step 1: adding 1.6-1.8 parts of polyoxypropylene glycerol ether, 11-13 parts of silica sol, 14-17 parts of deionized water and 13-17 parts of isobutyl acrylate into a first reaction container, stirring and dispersing for 20-25 min at normal temperature to obtain a mixture A for later use.

(2) Step 2: and (2) adding 41-44 parts of titanium dioxide sol, 16-18 parts of isocyanate and 33-37 parts of polyethylene glycol into a second reaction container, heating to 50 ℃, stirring for 30min, adding the mixture A obtained in the step (1), and stirring and dispersing for 30-40 min to obtain a mixture B.

(3) And step 3: and (3) adding 12-14 parts of cosolvent and 6-8 parts of talcum powder into the step (2), and stirring and dispersing for 20-30 min until the whole system is uniformly mixed to obtain a mixture C.

(4) And 4, step 4: adding 8-10 parts of silicon dioxide dispersion liquid and 1.6-1.8 parts of isobutyl acrylate into a third reaction container, heating to 50-60 ℃, stirring for 15min, adding 6-8 parts of allyl phosphate and 8-13 parts of aluminum silicate fiber into the third reaction container, keeping the temperature at 50-60 ℃, stirring for 30min, adding the mixture C obtained in the step (3), stirring and dispersing for 30-40 min, and uniformly mixing the whole system to obtain a mixture D.

(5) And 5: and (4) adding 23-27 parts of copper pyrithione, 13-16 parts of film forming agent, 1.7-1.9 parts of dispersing agent and 2-4 parts of polyethyleneimine into the mixture D obtained in the step (4), and stirring and dispersing for 10-15 min under the stirring condition of 600-800 rpm to obtain the coating.

Example 3: the coating comprises the following raw materials in parts by weight: the coating comprises, by weight, 14-15 parts of a mixture A, 42-43 parts of titanium dioxide sol, 16-17 parts of isocyanate, 34-35 parts of polyethylene glycol, 12-13 parts of a cosolvent, 6-7 parts of talcum powder, 8-9 parts of silica dispersion, 10-11 parts of aluminum silicate fiber, 1.6-1.7 parts of isobutyl acrylate, 6-7 parts of allyl phosphate, 25-26 parts of copper pyrithione, 14-15 parts of a film forming agent, 1.7-1.8 parts of a dispersing agent, 3-4 parts of polyethyleneimine and 1.7-1.8 parts of polyoxypropylene glycerol ether.

The mixture A is 1.6-1.7 parts of polyoxypropylene glycerol ether, 11-12 parts of silica sol, 15-16 parts of deionized water and 14-15 parts of isobutyl acrylate, and is prepared by stirring and dispersing for 20-25 min at normal temperature.

The preparation method comprises the following steps: (1) step 1: adding 1.6-1.7 parts of polyoxypropylene glycerol ether, 11-12 parts of silica sol, 15-16 parts of deionized water and 14-15 parts of isobutyl acrylate into a first reaction container, stirring and dispersing for 20-25 min at normal temperature to obtain a mixture A for later use.

(2) Step 2: and (3) adding 42-43 parts of titanium dioxide sol, 16-17 parts of isocyanate and 34-35 parts of polyethylene glycol into a second reaction container, heating to 50 ℃, stirring for 30min, adding the mixture A obtained in the step (1), and stirring and dispersing for 30-40 min to obtain a mixture B.

(3) And step 3: and (3) adding 12-13 parts of cosolvent and 6-7 parts of talcum powder into the step (2), and stirring and dispersing for 20-30 min until the whole system is uniformly mixed to obtain a mixture C.

(4) And 4, step 4: adding 8-9 parts of silicon dioxide dispersion liquid and 1.6-1.7 parts of isobutyl acrylate into a third reaction container, heating to 50-60 ℃, stirring for 15min, adding 6-7 parts of allyl phosphate and 10-11 parts of aluminum silicate fiber into the reaction container, keeping the temperature at 50-60 ℃, stirring for 30min, adding the mixture C obtained in the step (3), stirring and dispersing for 30-40 min, and uniformly mixing the whole system to obtain a mixture D. (5) And 5: and (4) adding 24-25 parts of copper pyrithione, 14-15 parts of film forming agent, 1.7-1.8 parts of dispersing agent and 3-4 parts of polyethyleneimine into the mixture D obtained in the step (4), and stirring and dispersing for 10-15 min under the stirring condition of 600-800 rpm to obtain the coating.

Example 4 is one coating that can be used for electrostatic spraying: the feed comprises the following raw materials in parts by weight: the coating comprises, by weight, 10-20 parts of a mixture A, 40-45 parts of titanium dioxide sol, 15-20 parts of isocyanate, 30-40 parts of polyethylene glycol, 10-15 parts of a cosolvent, 5-8 parts of talcum powder, 7-12 parts of silica dispersion, 5-15 parts of aluminum silicate fiber, 1.5-2 parts of isobutyl acrylate, 5-10 parts of allyl phosphate, 20-30 parts of copper pyrithione, 10-20 parts of a film forming agent, 1.6-2 parts of a dispersing agent and 1-5 parts of polyethyleneimine.

The mixture A is 1.5-2 parts of polyoxypropylene glycerol ether, 10-15 parts of silica sol, 10-20 parts of deionized water, 10-20 parts of isobutyl acrylate and 5-10 parts of conductive mica powder, static electricity is introduced into an insulating plastic barrel, and stirring and dispersing are carried out for 20-25 min, so that the conductive mica powder is prepared.

Without limitation, the static electricity in the mixture A is 5000-15000 volts, preferably 10000 volts.

A preparation method of the coating comprises the following steps: (1) step 1: adding 1.5-2 parts of polyoxypropylene glycerol ether, 10-15 parts of silica sol, 10-20 parts of deionized water, 10-20 parts of isobutyl acrylate and 5-10 parts of conductive mica powder into a reaction container of an insulating plastic barrel, introducing 10000V static electricity into the insulating plastic barrel, stirring and dispersing for 20-25 min to obtain a mixture A for later use.

(2) Step 2: and (2) adding 40-45 parts of titanium dioxide sol, 15-20 parts of isocyanate and 30-40 parts of polyethylene glycol into a second reaction container, heating to 50 ℃, stirring for 30min, adding the mixture A obtained in the step (1), and stirring and dispersing for 30-40 min to obtain a mixture B.

(3) And step 3: and (3) adding 10-15 parts of cosolvent and 5-8 parts of talcum powder into the mixture B obtained in the step (2), and stirring and dispersing for 20-30 min until the whole system is uniformly mixed to obtain a mixture C.

(4) And 4, step 4: adding 7-12 parts of silicon dioxide dispersion liquid and 1.5-2 parts of isobutyl acrylate into a third reaction container, heating to 50-60 ℃, stirring for 15min, adding 5-10 parts of allyl phosphate and 5-15 parts of aluminum silicate fiber into the reaction container, keeping the temperature at 50-60 ℃, stirring for 30min, adding the mixture C obtained in the step (3), stirring and dispersing for 30-40 min, and mixing the whole system uniformly to obtain a mixture D.

(5) And 5: and (4) adding 20-30 parts of copper pyrithione, 10-20 parts of film forming agent, 1.6-2 parts of dispersing agent and 1-5 parts of polyethyleneimine into the mixture D obtained in the step (4), and stirring and dispersing for 10-15 min under the stirring condition of 600-800 rpm to obtain the coating. The prepared coating is sprayed on the surface of a metal material which is easy to corrode by using an electrostatic spraying gun to form a coating, and the coating has the advantages of good adhesiveness, difficult shedding, strong contact adhesive force with the metal surface and good comprehensive performance.

The above contents are only examples and illustrations of the invention, and the coating prepared by the method is used on the surface of metal, has high glossiness, high temperature resistance, good surface hardness, high corrosion resistance, good adhesiveness, difficult shedding, strong contact adhesive force with the metal surface, high paint film hardness of the coating, good coloring effect, difficult agglomeration, is suitable for surface treatment decoration of iron, common alloy, metal easy to rust and the like, and has good comprehensive performance. Various modifications, additions and substitutions for the specific embodiments described may occur to those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.

Claims (8)

1. A coating, characterized by: the paint comprises the following raw materials, by weight, 10-20 parts of a mixture A, 40-45 parts of titanium dioxide sol, 15-20 parts of isocyanate, 30-40 parts of polyethylene glycol, 10-15 parts of a cosolvent, 5-8 parts of talcum powder, 7-12 parts of a silicon dioxide dispersion liquid, 5-15 parts of aluminum silicate fiber, 1.5-2 parts of isobutyl acrylate, 5-10 parts of allyl phosphate, 20-30 parts of copper pyrithione, 10-20 parts of a film forming agent, 1.6-2 parts of a dispersing agent and 1-5 parts of polyethyleneimine.

2. The coating of claim 1, wherein: the mixture A is 1.5-2 parts of polyoxypropylene glycerol ether, 10-15 parts of silica sol, 10-20 parts of deionized water and 10-20 parts of isobutyl acrylate, and is prepared by stirring and dispersing in a container at normal temperature for 20-25 min.

3. A coating according to claim 1, wherein: the mixture A is 1.5-2 parts of polyoxypropylene glycerol ether, 10-15 parts of silica sol, 10-20 parts of deionized water, 10-20 parts of isobutyl acrylate and 5-10 parts of conductive mica powder, static electricity is introduced into an insulating plastic barrel, and stirring and dispersing are carried out for 20-25 min, so that the conductive mica powder is prepared.

4. A coating according to claim 3, wherein: and introducing static electricity into the mixture A at 5000-15000 volts.

5. A coating according to claim 1, wherein: the titanium dioxide sol is nano titanium dioxide sol.

6. A coating according to claim 1, wherein: the cosolvent is any one of sodium salicylate and p-aminobenzoic acid.

7. A preparation method of the coating comprises the following steps:

(1) step 1: adding 1.5-2 parts of polyoxypropylene glycerol ether, 10-15 parts of silica sol, 10-20 parts of deionized water and 10-20 parts of isobutyl acrylate into a first reaction container, and stirring and dispersing for 20-25 min at normal temperature to obtain a mixture A for later use;

(2) step 2: adding 40-45 parts of titanium dioxide sol, 15-20 parts of isocyanate and 30-40 parts of polyethylene glycol into a second reaction container, heating to 50 ℃, stirring for 30min, adding the mixture A obtained in the step (1), and stirring and dispersing for 30-40 min to obtain a mixture B;

(3) and step 3: adding 10-15 parts of cosolvent and 5-8 parts of talcum powder into the step 2, stirring and dispersing for 20-30 min until the whole system is uniformly mixed to obtain a mixture C;

(4) and 4, step 4: adding 7-12 parts of silicon dioxide dispersion liquid and 1.5-2 parts of isobutyl acrylate into a third reaction container, heating to 50-60 ℃, stirring for 15min, adding 5-10 parts of allyl phosphate and 5-15 parts of aluminum silicate fiber into the reaction container, keeping the temperature at 50-60 ℃, stirring for 30min, adding the mixture C obtained in the step (3), stirring and dispersing for 30-40 min, and mixing the whole system uniformly to obtain a mixture D;

(5) and 5: and (4) adding 20-30 parts of copper pyrithione, 10-20 parts of film forming agent, 1.6-2 parts of dispersing agent and 1-5 parts of polyethyleneimine into the mixture D obtained in the step (4), and stirring and dispersing for 10-15 min under the stirring condition of 600-800 rpm to obtain the coating.

8. A preparation method of the coating comprises the following steps: (1) step 1: adding 1.5-2 parts of polyoxypropylene glycerol ether, 10-15 parts of silica sol, 10-20 parts of deionized water, 10-20 parts of isobutyl acrylate and 5-10 parts of conductive mica powder into a first reaction container, introducing static electricity into an insulating plastic barrel, and stirring and dispersing for 20-25 min to obtain a mixture A for later use;

(2) step 2: adding 40-45 parts of titanium dioxide sol, 15-20 parts of isocyanate and 30-40 parts of polyethylene glycol into a second reaction container, heating to 50 ℃, stirring for 30min, adding the mixture A obtained in the step (1), and stirring and dispersing for 30-40 min to obtain a mixture B;

(3) and step 3: adding 10-15 parts of cosolvent and 5-8 parts of talcum powder into the step 2, stirring and dispersing for 20-30 min until the whole system is uniformly mixed to obtain a mixture C;

(4) and 4, step 4: adding 7-12 parts of silicon dioxide dispersion liquid and 1.5-2 parts of isobutyl acrylate into a third reaction container, heating to 50-60 ℃, stirring for 15min, adding 5-10 parts of allyl phosphate and 5-15 parts of aluminum silicate fiber into the reaction container, keeping the temperature at 50-60 ℃, stirring for 30min, adding the mixture C obtained in the step (3), stirring and dispersing for 30-40 min, and mixing the whole system uniformly to obtain a mixture D;

(5) and 5: and (4) adding 20-30 parts of copper pyrithione, 10-20 parts of film forming agent, 1.6-2 parts of dispersing agent and 1-5 parts of polyethyleneimine into the mixture D obtained in the step (4), and stirring and dispersing for 10-15 min under the stirring condition of 600-800 rpm to obtain the coating.