Quick-dry high-molecular elastic anticorrosive paint

Abstract

The invention relates to a quick-dry high-molecular elastic anticorrosive coating which comprises 15-30 parts of film-forming resin, 22-50 parts of pigment filler, 1-8 parts of an auxiliary agent, 10-15 parts of a flexibilizer and 5-10 parts of deionized water, and discloses a preparation method of the quick-dry high-molecular elastic anticorrosive coating. The paint has the beneficial effects that the paint can be dried quickly, has good elasticity and corrosion resistance, has relatively strong weather resistance and chemical resistance, can be widely applied to industrial equipment, various equipment implementation of power plants and the outer surfaces of pipelines, and has the characteristics of strong adhesive force, good flexibility, long service life and the like.

Description

Technical Field

[0001] The invention relates to a quick-drying polymer elastic anticorrosive coating and a preparation method thereof, which is particularly suitable for the anticorrosion and heat insulation of chemical storage tanks, power plant equipment and facilities, and transport vehicles. Background Art

[0002] There are many types of coatings used in the petrochemical industry and power plants, among which the demand for anti-corrosion coatings is very huge. In addition to having good anti-corrosion properties, the coatings on the surfaces of petrochemical storage tanks, power plant facilities, etc. must also have certain elasticity and ductility to avoid cracking and shedding of the coating due to temperature changes or equipment deformation. In addition, the curing time of the coating is also very important. Rapid curing can shorten the construction time and reduce the construction problems caused by weather and other environmental problems.

[0003] In order to overcome the shortcomings of existing coating performance, the present invention discloses a polymer elastic anticorrosive coating and formula based on modified acrylic elastic emulsion combined with a toughening agent. The coating has obvious heat insulation effect, can be dried quickly, and has good elasticity and anticorrosive properties, and has strong weather resistance and chemical resistance. The coating can be widely used in industrial equipment, various equipment implementations in power plants and the outer surface of pipelines, and has the characteristics of strong adhesion, good flexibility, and long service life. Summary of the invention

[0004] The technical problem to be solved by the present invention is: Based on the above problem, the present invention provides a quick-drying polymer elastic anti-corrosion coating and a preparation method thereof.

[0005] A technical solution adopted by the present invention to solve the technical problem is: 15-30 parts of film-forming resin, 22-50 parts of pigments and fillers, 1-8 parts of additives, 10-15 parts of toughening agents, and 5-10 parts of deionized water.

[0006] Furthermore, the film-forming resin is a modified acrylic elastic emulsion, the solid content of the emulsion is 48±3%, and the glass transition temperature is 0°C.

[0007] Furthermore, the pigment filler is two or more of rutile titanium dioxide, fumed silica, heavy calcium carbonate and barium sulfate, and the size of the pigment filler is 2000 mesh to 6000 mesh.

[0008] Furthermore, the auxiliary agents are dispersants, defoamers, preservatives and film-forming agents.

[0009] Furthermore, the toughening agent is liquid nitrile rubber.

[0010] Furthermore, the preparation method of the coating includes the following steps: adding all pigments and fillers into deionized water, gradually increasing the stirring speed to 1300 rpm, stirring for 40 minutes, adding all additives to obtain a uniformly dispersed mixed solution; adding film-forming resin and toughening agent to the mixed solution, stirring for 30 minutes; reducing the stirring rate to 400 rpm to obtain a quick-drying polymer elastic anti-corrosion coating.

[0011] The beneficial effects of the present invention are as follows: (1) the use of modified acrylic elastic resin can significantly improve the elasticity and ductility of the coating; (2) after adding a toughening agent, the elasticity of the coating is further improved and the curing process of the coating is accelerated; (3) the coating has broad application prospects and is particularly suitable for use on the outer surfaces of equipment such as storage tanks in petrochemical plants, power plants and transmission pipelines. DETAILED DESCRIPTION

[0012] The present invention will now be further described in conjunction with specific embodiments. The following embodiments are intended to illustrate the present invention rather than to further limit the present invention.

[0013] Example 1

[0014] Add 100g of titanium dioxide, 100g of barium sulfate, 100g of fumed silica, 100g of barium carbonate and other pigments and fillers into 100g of deionized water, gradually increase the stirring speed to 1300 rpm and stir for 40 minutes, add 10g of dispersant, 10g of defoamer, 10g of film-forming agent and 10g of preservative to obtain a uniformly dispersed mixed solution; then add 200g of modified acrylic elastic emulsion and 120g of toughening agent, continue stirring for 30 minutes, and reduce the stirring rate to 400 rpm.

[0015] Example 2

[0016] Add 100g of titanium dioxide, 100g of barium sulfate, 100g of fumed silica, 100g of barium carbonate and other pigments and fillers into 100g of deionized water, gradually increase the stirring speed to 1300 rpm and stir for 40 minutes, add 10g of dispersant, 10g of defoamer, 10g of film-forming agent and 10g of preservative to obtain a uniformly dispersed mixed solution; then add 120g of modified acrylic elastic emulsion and 120g of toughening agent, continue stirring for 30 minutes, and reduce the stirring rate to 400 rpm.

[0017] Example 3

[0018] Add 100g of titanium dioxide, 100g of barium sulfate, 100g of fumed silica, 100g of barium carbonate and other pigments and fillers into 100g of deionized water, gradually increase the stirring speed to 1300 rpm and stir for 40 minutes, add 10g of dispersant, 10g of defoamer, 10g of film-forming agent and 10g of preservative to obtain a uniformly dispersed mixed solution; then add 200g of modified acrylic elastic emulsion and 50g of toughening agent, continue stirring for 30 minutes, and reduce the stirring rate to 400 rpm.

[0019] Example 4

[0020] Add 50g of titanium dioxide, 50g of barium sulfate, 50g of fumed silica, 100g of barium carbonate and other pigments and fillers into 100g of deionized water, gradually increase the stirring speed to 1300 rpm and stir for 40 minutes, add 10g of dispersant, 10g of defoamer, 10g of film-forming agent and 10g of preservative to obtain a uniformly dispersed mixed solution; then add 200g of modified acrylic elastic emulsion and 120g of toughening agent, continue stirring for 30 minutes, and reduce the stirring rate to 400 rpm.

[0021] The test results of the thermal insulation and anti-corrosion coating performance obtained in the embodiment are as follows:

[0022]

[0023]

[0024] It can be seen from the above table that the coating of the present invention has excellent properties and fully complies with relevant national standards. If the content of the elastic resin or toughening agent is reduced, the curing time, ductility and aging resistance of the coating will be significantly reduced.

[0025] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A quick-drying polymer elastic anti-corrosion coating, characterized by: Calculated by weight, it includes 15-30 parts of film-forming resin, 22-50 parts of pigments and fillers, 4-8 parts of additives, 10-15 parts of toughening agents, and 5-10 parts of deionized water.

2. The quick-drying polymer elastic anticorrosive coating according to claim 1, characterized in that: The film-forming resin is a modified acrylic elastic emulsion, the solid content of the emulsion is 48±3%, and the glass transition temperature is 0°C.

3. The quick-drying polymer elastic anticorrosive coating according to claim 1, characterized in that: The pigments and fillers are two or more of rutile titanium dioxide, fumed white carbon black, heavy calcium carbonate and barium sulfate, and the size of the pigments and fillers is 2000-6000 meshes.

4. The quick-drying polymer elastic anticorrosive coating according to claim 1, characterized in that: The auxiliary agents are dispersants, defoamers, preservatives and film-forming agents.

5. The quick-drying polymer elastic anticorrosive coating according to claim 1, characterized in that: The toughening agent is liquid nitrile rubber.

6. The quick-drying polymer elastic anticorrosive coating according to claim 1, characterized in that: The following steps are involved: Add all pigments and fillers into deionized water, gradually increase the stirring speed to 1300 rpm, stir for 40 minutes, add all additives to obtain a uniformly dispersed mixed solution; add film-forming resin and toughening agent to the mixed solution, stir for 30 minutes; reduce the stirring rate to 400 rpm to obtain a quick-drying polymer elastic anti-corrosion coating.

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