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Multipurpose primer-topcoat water-based coating and preparation method thereof

A water-based paint, multi-purpose technology, applied in the direction of anti-corrosion paint, coating, etc., can solve the problems of poor salt spray resistance, difficult to meet customer needs, etc., to achieve the effect of improving adhesion

Inactive Publication Date: 2021-06-29
GUANGDONG YATU CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The self-drying paint uses acrylic modified epoxy ester resin and styrene modified acrylic resin as film-forming substances, and contains calcium naphthenate, manganese naphthenate, and isobutanol. Adding a variety of additives, pigments and fillers can achieve excellent quick-drying effect. The invention has better water resistance (240h), but poor salt spray resistance (240h). In practical applications, it is difficult to satisfy customers. need

Method used

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  • Multipurpose primer-topcoat water-based coating and preparation method thereof
  • Multipurpose primer-topcoat water-based coating and preparation method thereof
  • Multipurpose primer-topcoat water-based coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A kind of water-based coating with multi-purpose base and surface, which is tested by changing the type of anti-rust pigment, numbered 1#, 2#, 3#, 4#, the specific formula is shown in Table 1, and its preparation method is as follows:

[0031] S1: Add the formulated amount of dispersant, zinc molybdate modified pigment, silicon-based calcium ion-exchange anti-rust pigment, calcium phosphate-based anti-corrosion inhibitor, siloxane modified nano-mica powder, ultra-fine talc powder, ultra-fine Fine barium sulfate, titanium dioxide, organic soil, anti-flash embroidery agent, pre-dispersed at 900-1200 rpm, grind to a fineness below 15um with a horizontal sand mill, temperature 40-50°C, flow rate 10-15L / min to get slurry;

[0032] S2: drop into the water-based acrylic emulsion of formula quantity successively, ethylene glycol butyl ether, dipropylene glycol methyl ether, alcohol ester twelve, at 300-600 rpm, stir for 5-10 minutes;

[0033] S3:: add the siloxane-based coupl...

Embodiment 2

[0042] A kind of water-based coating with multi-purpose base and surface, experimented by changing the ratio of calcium ion exchange anti-rust pigment and calcium phosphate-based anti-corrosion inhibitor, numbered 5#, 6#, 7#, 8#, see Table 3, The paint preparation method is the same as in Example 1, and the performance of the paint film is tested, as shown in Table 4. It is known from the table that changing the amount of anti-rust pigments and inhibitors has a certain impact on the water resistance and salt spray resistance of the paint film , wherein the amount of anti-rust pigment and inhibitor is between 1:0.8-1.2, which can realize the complementary performance of anti-rust pigment and inhibitor. A synergistic effect is produced in the removal and passivation to reduce the penetration of water. The concentration of calcium ions in this ratio is complementary, so that silicate ions and calcium ions can fully generate insoluble silicates, forming a dense passivation protecti...

Embodiment 3

[0048] A kind of water-based coating with multi-purpose base surface, change the kind of adhesion promoter to carry out experiment, numbering is 1#, 9#, 10#, see table 5, the preparation method of colored paint is the same as embodiment 1, and the performance of paint film Test, see Table 6. It is known from the table that changing the adhesion promoter affects the adhesion of the paint film. Adhesion is acceptable, but with water resistance or salt spray resistance, the adhesion of the paint film is seriously reduced, which affects the service life, and the epoxy phosphate polymer adhesion promoter is used, and the epoxy phosphate polymer main chain It contains a large number of groups that can bond with the surface of the substrate, which improves the adhesion of the coating to the substrate and expands the application field of the formula.

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Abstract

The invention relates to a coating and a preparation method thereof, and concretely relates to a multipurpose primer-topcoat water-based coating and a preparation method thereof. The multipurpose primer-topcoat water-based coating comprises 38-52 parts of a self-drying water-based acrylic emulsion, 1-2 parts of ethylene glycol monobutyl ether, 1-2 parts of dipropylene glycol monomethyl ether, 1-2 parts of texanol, 0.2-0.7 part of a dispersant, 1-3 parts of a siloxane-based coupling agent, 1-3 parts of an epoxy phosphate polymer, 1-3 parts of a zinc molybdate modified pigment, 2-5 parts of a calcium ion exchange type antirust pigment, 2-5 parts of a calcium phosphate based anti-corrosion inhibitor, 2-10 parts of siloxane modified nano mica powder, 2-6 parts of superfine talcum powder, 2-6 parts of superfine barium sulfate, 11-23 parts of titanium dioxide, 0.1-0.5 part of organic soil, 0.3-0.8 part of a flash rust inhibitor, 0.2-1 part of a thickening agent and 0.1-34 parts of deionized water. The coating is widely applied, and the adhesive force can be measured to be 0-1 level in a gridding manner on a steel plate, an aluminum plate, a galvanized plate, an acrylic plate and a PVC plate subjected to low surface treatment.

Description

technical field [0001] The invention relates to a paint and a preparation method, in particular to a multipurpose bottom-surface-in-one water-based paint and a preparation method thereof. [0002] technical background [0003] The water-based base paint is a water-based paint that combines the primer and the top coat into one, which requires that it not only has the performance of the primer, but also has the performance of the top coat. Due to the characteristics of both the primer and the topcoat, the coating process of the water-based primer and topcoat is greatly simplified, which saves the energy consumption of the coating process and the cost of coating construction, improves economic benefits, and avoids the need for primers, topcoats, etc. Coating quality problems caused by mismatch between paints. [0004] Patent No. "CN 106118295 A" discloses a water-based anti-corrosion coating with rust on the bottom surface and its preparation method. In this invention, the anti...

Claims

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Application Information

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IPC IPC(8): C09D133/04C09D5/08C09D5/10C09D7/61C09D7/62C09D7/65
CPCC09D133/04C09D5/082C09D5/08C09D5/103C09D7/65C09D7/61C09D7/62C08K2003/3045C08K2201/011C08K2003/2241C08K2201/014C08K2003/325C08K2003/0812C08L85/02C08K13/06C08K9/06C08K9/02C08K3/34C08K3/32C08K3/30C08K3/22C08K3/08
Inventor 黄劼江瀚施沃成陈忠冯兆华冯兆均
Owner GUANGDONG YATU CHEM
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