WO2022088146A1

WO2022088146A1 - Aqueous composite flaky zinc-aluminum anti-corrosion paint, preparation method therefor, and use thereof

Info

Publication number: WO2022088146A1
Application number: PCT/CN2020/125662
Authority: WO
Inventors: 袁洪青
Original assignee: 河北比尔尼克新材料科技股份有限公司
Priority date: 2020-10-31
Filing date: 2020-10-31
Publication date: 2022-05-05

Abstract

An aqueous composite flaky zinc-aluminum anti-corrosion paint, comprising the following raw materials: 25-30 parts of an aqueous silica sol resin, 20-30 parts of an aqueous silicone acrylic emulsion, 15-20 parts of a flaky zinc powder, 15-20 parts of a flaky aluminum powder, 15-20 parts of a color paste, 2-5 parts of a defoaming agent, 3-10 parts of a dispersing agent, 3-10 parts of a film-forming auxiliary, and 2-8 parts of an anti-settling agent. A method for preparing the aqueous composite flaky zinc-aluminum anti-corrosion paint, the method comprising the following steps: (1) weighing the raw materials; (2) firstly mixing and stirring the aqueous silica sol resin together with the aqueous silicone acrylic emulsion, then adding the flaky zinc powder and the flaky aluminum powder, and mixing and stirring same; (3) adding the mixture to the color paste, and stirring and naturally cooling same; and (4) sequentially adding the defoaming agent, the dispersing agent, the film-forming auxiliary and the anti-settling agent while stirring, so as to obtain the aqueous composite flaky zinc-aluminum anti-corrosion paint. The aqueous paint has a moderate viscosity, a uniform raw material dispersity, a good adhesion, is fast drying, has a good film-forming property, leveling property and corrosion resistance, and a strong operability.

Description

A kind of water-based composite flake zinc-aluminum anti-corrosion paint and preparation method and application thereof

technical field

The invention relates to the technical field of environmental protection coatings, in particular to a water-based composite flake zinc-aluminum anti-corrosion paint and a preparation method and application thereof.

Background technique

At present, traditional paint products have been used on bridges. The main components are xylene, butanol, petroleum resin, etc., which are inflammable and explosive products. Now we vigorously advocate environmental protection and safety, and it is an inevitable trend to replace all of them with environmentally friendly water-based paint products.

Water-based paint, also known as water-based anti-rust paint, water-based steel structure paint, water-based floor paint, water-based wood paint, is harmless to the human body and does not pollute the environment. , anti-aging, anti-yellowing, fast drying, easy to use and so on. Water-based paint can effectively reduce the VOC content in the atmosphere by replacing paint with water-based paint, thereby improving haze weather. .

technical problem

However, when water-based paint is applied to bridges, it is prone to fall off, low adhesion, and low corrosion resistance.

Therefore, how to provide a water-based composite flake zinc-aluminum anti-corrosion paint is an urgent problem for those skilled in the art.

technical solutions

In view of this, the present invention provides a water-based composite flake zinc-aluminum anti-corrosion paint and its preparation method and application to solve the deficiencies in the prior art.

In order to achieve the above object, the present invention adopts the following technical solutions:

A water-based composite flake zinc-aluminum anti-corrosion paint, comprising the following raw materials in parts by weight: 25-30 parts of water-based silica sol resin, 20-30 parts of water-based silicone-acrylic emulsion, 15-20 parts of scaly zinc powder, and 15-20 parts of scaly aluminum powder. 20 parts, 15-20 parts of color paste, 2-5 parts of defoamer, 3-10 parts of dispersant, 3-10 parts of film-forming aids and 2-8 parts of anti-settling agent;

Preferably: 26-29 parts of water-based silica sol resin, 22-28 parts of water-based silicone-acrylic emulsion, 16-19 parts of scaly zinc powder, 16-19 parts of scaly aluminum powder, 16-19 parts of color paste, 3 defoamer -5 parts, 4-9 parts of dispersant, 4-9 parts of film-forming aid and 3-7 parts of anti-settling agent.

More preferably: 28 parts of water-based silica sol resin, 25 parts of water-based silicone-acrylic emulsion, 18 parts of scaly zinc powder, 18 parts of scaly aluminum powder, 18 parts of color paste, 3 parts of defoamer, 6 parts of dispersant, film forming 6 parts of auxiliary and 5 parts of anti-settling agent.

The beneficial effects of the present invention are that the water-based paint prepared from the above-mentioned raw materials in the present invention has moderate viscosity, uniform dispersion of raw materials, good adhesion, fast drying, good film-forming properties, leveling properties, anti-corrosion properties, strong operability, and spraying. , brushing or electrostatic spraying can meet the required transparency and anti-corrosion performance standards; and the product is odorless, non-polluting, non-flammable and non-explosive.

Further, the above-mentioned color paste is an organic color paste.

The beneficial effects of adopting the above-mentioned further technical solutions are that the organic color paste of the present invention is natural and environmentally friendly, high-quality and healthy, soft in color, beautiful in decoration, strong in weather resistance, superior in rationality, strong in waterproof and moisture-proof, breathable and dry.

Further, the above-mentioned antifoaming agent is a nonionic silicone antifoaming agent.

The beneficial effect of adopting the above-mentioned further technical scheme is that the nonionic silicone defoamer of the present invention has excellent stability, is easy to disperse in water, and is compatible with the foaming medium in the system.

A preparation method of water-based composite flake zinc-aluminum anti-corrosion paint, specifically comprising the following steps:

(1) Weigh each raw material according to the parts by weight of the above-mentioned water-based composite flake zinc-aluminum anti-corrosion paint;

(2) firstly mixing and stirring the water-based silica sol resin and the water-based silicone-acrylic emulsion for the first time to obtain mixture A; then adding the mixture A into scaly zinc powder and scaly aluminum powder for the second mixing and stirring to obtain mixture B;

(3) Add mixture B into the color paste, stir, and cool naturally to obtain mixture C;

(4) Add defoaming agent, dispersant, film-forming aid and anti-settling agent to mixture C in sequence under stirring condition to obtain water-based composite flake zinc-aluminum anti-corrosion paint.

beneficial effect

The beneficial effect of the present invention is that the preparation method has a simple process and is suitable for large-scale production.

Further, in the above step (2), the speed of the first mixing and stirring is 400-600r/min, and the time is 15-25min; the speed of the second mixing and stirring is 800-1200r/min, and the time is 5-10min.

Further, in the above step (3), the stirring speed is 800-1200r/min, preferably 1000r/min; the time is 5-10min, preferably 8min; naturally cooled to 20-30°C, preferably 25°C.

The present invention also claims to protect the application of the above-mentioned water-based composite flake zinc-aluminum anti-corrosion paint in the preparation of special paint for bridges.

As can be seen from the above-mentioned technical solutions, compared with the prior art, the beneficial effects of the present invention are as follows:

1. The water-based paint of the present invention uses water as a solvent, which saves a lot of resources, is odorless, non-flammable and non-explosive, and does not contain VOC harmful substances such as benzene, xylene, ethane, formaldehyde, etc., eliminates fire hazards during construction and storage, reduces In order to avoid the pollution to the atmosphere, the construction can be carried out as usual in a closed environment;

2. The water-based paint of the present invention has various protection functions on the bridge surface, high corrosion resistance, scratch resistance and self-healing ability, water resistance, acid and alkali resistance, real ecological environmental protection paint, simple operation performance, and the painting tool can be directly used with water Cleaning can greatly reduce the damage to construction workers;

3. The water-based paint of the present invention can be directly stirred without any grinding procedure, and the preparation method is simple and reliable.

Detailed ways

The technical solutions in the embodiments of the present invention will be described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In the following examples, the model of each raw material and its manufacturer information are as follows:

Water-based silica sol resin, the model is MF-3501, the manufacturer is Tianjin Baoxing Chemical Co., Ltd.;

Water-based silicone-acrylic emulsion, KM-105, the manufacturer is Huangshan Kemei New Material Co., Ltd.;

Flake zinc powder, model JB009, the manufacturer is Jiangsu Kecheng Nonferrous Metals Co., Ltd.;

Flake aluminum powder, model HT-660, produced by Jiangsu Kecheng Nonferrous Metals Co., Ltd.;

Color paste, the model is DAE-N01, the manufacturer is Jiangsu Fuqisen New Materials Co., Ltd.;

Defoamer, the model is TSA-10A, the manufacturer is Jiangsu Tengda Auxiliary Co., Ltd.;

Dispersant, the model is XN3800, the manufacturer is Shanghai Zhongjixing Chemical Co., Ltd.;

Coalescent agent, model CZ-012, manufacturer Tianjin Rongsheng Technology Co., Ltd.;

Anti-settling agent, the model is CMZ-8854, the manufacturer is Qingdao Xutai Chemical Co., Ltd.

Example 1

Water-based composite flake zinc-aluminum anti-corrosion paint, including the following raw materials: water-based silica sol resin 25kg, water-based silicone-acrylic emulsion 20kg, scaly zinc powder 15kg, scaly aluminum powder 15kg, organic color paste 15kg, non-ionic silicone defoaming 2kg of agent, 3kg of dispersant, 3kg of film-forming aid and 2kg of anti-settling agent;

The preparation method of the above-mentioned water-based composite flake zinc-aluminum anti-corrosion paint specifically comprises the following steps:

(1) Weigh each raw material according to the weight of the above-mentioned water-based composite flake zinc-aluminum anti-corrosion paint;

(2) Mix the water-based silica sol resin and the water-based silicone-acrylic emulsion for the first time, and stir at a speed of 400 r/min for 15 minutes to obtain the mixture A; then add the mixture A into scaly zinc powder and scaly aluminum powder for the second Mixing for 5 min at a speed of 800 r/min to obtain mixture B;

(3) Add mixture B into the organic color paste, stir at a speed of 800 r/min for 5 min, and cool to 20°C naturally to obtain mixture C;

(4) Under stirring conditions, add non-ionic organosilicon, non-ionic organosilicon defoamer, dispersant, film-forming aid and anti-settling agent to mixture C in turn to obtain water-based composite flake zinc-aluminum anti-corrosion paint.

Example 2

Water-based composite flake zinc-aluminum anti-corrosion paint, including the following raw materials: water-based silica sol resin 26kg, water-based silicone-acrylic emulsion 22kg, scaly zinc powder 16kg, scaly aluminum powder 16kg, organic color paste 16kg, non-ionic silicone defoaming 3kg of agent, 4kg of dispersant, 4kg of film-forming aid and 3kg of anti-settling agent;

(3) Add mixture B into the organic color paste, stir at a speed of 800 r/min for 6 min, and naturally cool to 22 °C to obtain mixture C;

Example 3

Water-based composite flake zinc-aluminum anti-corrosion paint, including the following raw materials: water-based silica sol resin 26kg, water-based silicone-acrylic emulsion 22kg, scaly zinc powder 16kg, scaly aluminum powder 16kg, organic color paste 19kg, non-ionic silicone defoaming 5kg of agent, 9kg of dispersant, 9kg of film-forming aid and 7kg of anti-settling agent;

(2) Mix the water-based silica sol resin and the water-based silicone-acrylic emulsion for the first time, and stir at a speed of 600 r/min for 25 minutes to obtain mixture A; then add the mixture A into scaly zinc powder and scaly aluminum powder for the second Mixing for 10 minutes at a speed of 1200 r/min to obtain mixture B;

(3) Add mixture B into the organic color paste, stir at a speed of 1200 r/min for 10 min, and naturally cool to 20 °C to obtain mixture C;

Example 4

Water-based composite flake zinc-aluminum anti-corrosion paint, including the following raw materials: water-based silica sol resin 29kg, water-based silicone-acrylic emulsion 28kg, scaly zinc powder 19kg, scaly aluminum powder 19kg, organic color paste 19kg, non-ionic silicone defoaming 5kg of agent, 9kg of dispersant, 9kg of film-forming aid and 7kg of anti-settling agent;

(3) Add mixture B into the organic color paste, stir at a speed of 1200 r/min for 5 min, and naturally cool to 30°C to obtain mixture C;

Example 5

Water-based composite flake zinc-aluminum anti-corrosion paint, including the following raw materials: water-based silica sol resin 30kg, water-based silicone-acrylic emulsion 30kg, scaly zinc powder 20kg, scaly aluminum powder 20kg, organic color paste 20kg, non-ionic silicone defoaming 5kg of agent, 10kg of dispersant, 10kg of film-forming aid and 8kg of anti-settling agent;

(2) Mix the water-based silica sol resin and the water-based silicone-acrylic emulsion for the first time, and stir at a speed of 500 r/min for 20 min to obtain the mixture A; Mixing for 8 min at a speed of 1000 r/min to obtain mixture B;

(3) Add mixture B into the organic color paste, stir at a speed of 1000 r/min for 10 min, and naturally cool to 30°C to obtain mixture C;

Example 6

Water-based composite flake zinc-aluminum anti-corrosion paint, including the following raw materials: water-based composite flake zinc-aluminum anti-corrosion paint, including the following raw materials: water-based silica sol resin 26-29kg, water-based silicone-acrylic emulsion 22-28kg, flaky zinc powder 16- 19kg, scaly aluminum powder 16-19kg, organic color paste 16-19kg, non-ionic silicone defoamer 3-5kg, dispersant 4-9kg, film-forming aid 4-9kg and anti-settling agent 3-7kg;

(3) Add mixture B into the organic color paste, stir at a speed of 1000 r/min for 8 min, and naturally cool to 25°C to obtain mixture C;

(4) Under stirring conditions, the non-ionic silicone defoamer, dispersant, film-forming aid and anti-settling agent are sequentially added to the mixture C to obtain the water-based composite flake zinc-aluminum anti-corrosion paint.

Performance testing

The performance detection of the water-based composite flake zinc-aluminum anti-corrosion paint prepared by the above-mentioned embodiment is carried out, and the detection items and the results are as follows:

Table 1 Performance testing items and results of water-based composite flake zinc-aluminum anti-corrosion paint

As can be seen from Table 1, the water-based paint of the present invention is a uniform and non-hard-block water-based liquid product with low fineness, high gloss and hardness, and excellent blocking resistance, scratch resistance, water resistance, alkali resistance and solvent resistance.

According to the standard of GB/T 23986-2009 "Gas Chromatography for Determination of Organic Compound (VOC) Content in Paints and Varnishes", the volatile organic compound (VOC) content in the water-based paints obtained by each embodiment of the present invention is detected, and the obtained The results are shown in Table 2:

Table 2 Test results of volatile organic compounds (VOC) content of water-based composite flake zinc-aluminum anti-corrosion paint

It can be seen from Table 2 that the volatile organic compound (VOC) content in the water-based paint of the present invention is far lower than the standard required by GB/T 23986-2009, and the water-based paint of the present invention has excellent green and environmental protection effects.

According to American Society for Testing and Materials-ASTM F 963-11-Standard for Soluble Heavy Metal Content in Substrate/Ink or Coating 5) - According to ASTM The F 963-11 (I record 8.3) sample was extracted with dilute hydrochloric acid and analyzed by ICP-OES. The results are shown in Table 3:

The soluble heavy metal content detection result in table 3 water-based paint of the present invention

Note: MDL means detection limit, ND means not detected.

As can be seen from Table 3, the water-based paint of the present invention does not contain soluble heavy metal elements such as lead, arsenic, palladium, cadmium, chromium and mercury, nor does it contain soluble pollution elements such as selenium, and the water-based paint of the present invention is safe and environmentally friendly, and has no pollution.

Although the present invention has been illustrated and described with specific embodiments, it should be appreciated that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limit them; those of ordinary skill in the art should understand that: In the case of deviating from the spirit and scope of the present invention, the technical solutions recorded in the foregoing embodiments can be modified, or some or all of the technical features thereof can be equivalently replaced; and these modifications or replacements do not make the corresponding technical solutions. Essentially depart from the scope of the technical solutions of the embodiments of the present invention; therefore, it is intended that all such substitutions and modifications that fall within the scope of the present invention be included in the appended claims.

Claims

A water-based composite flake zinc-aluminum anti-corrosion paint, characterized in that it comprises the following raw materials in parts by weight: 25-30 parts of water-based silica sol resin, 20-30 parts of water-based silicone-acrylic emulsion, 15-20 parts of scaly zinc powder, 15-20 parts of aluminum powder, 15-20 parts of color paste, 2-5 parts of defoamer, 3-10 parts of dispersant, 3-10 parts of film-forming aids and 2-8 parts of anti-settling agent.
A kind of water-based composite flake zinc-aluminum anti-corrosion paint according to claim 1, is characterized in that, comprises the following raw materials by weight: 26-29 parts of water-based silica sol resin, 22-28 parts of water-based silicone-acrylic emulsion, scaly zinc powder 16-19 parts, 16-19 parts of scaly aluminum powder, 16-19 parts of color paste, 3-5 parts of defoamer, 4-9 parts of dispersant, 4-9 parts of film-forming aids and 3- 7 servings.
A water-based composite flake zinc-aluminum anti-corrosion paint according to claim 2, characterized in that it comprises the following raw materials by weight: 26-29 parts of water-based silica sol resin, 22-28 parts of water-based silicone-acrylic emulsion, scaly zinc powder 16-19 parts, 16-19 parts of scaly aluminum powder, 16-19 parts of color paste, 3-5 parts of defoamer, 4-9 parts of dispersant, 4-9 parts of film-forming aids and 3- 7 servings.
The water-based composite flake zinc-aluminum anti-corrosion paint according to any one of claims 1-3, wherein the color paste is an organic color paste.
The water-based composite flake zinc-aluminum anti-corrosion paint according to any one of claims 1-3, wherein the defoamer is a non-ionic silicone defoamer.
A preparation method of water-based composite flake zinc-aluminum anti-corrosion paint is characterized in that, specifically comprises the following steps:

(1) Weigh each raw material according to the parts by weight of the water-based composite flake zinc-aluminum anti-corrosion paint described in any one of claims 1-5;

(2) Mixing and stirring the water-based silica sol resin and the water-based silicone-acrylic emulsion for the first time to obtain a mixture A; then adding the mixture A into the scaly zinc powder and the scaly aluminum powder for the second mixing and stirring to obtain the mixture B;

(3) Add mixture B into the color paste, stir, and cool naturally to obtain mixture C;

(4) Add defoaming agent, dispersant, film-forming aid and anti-settling agent to mixture C in sequence under stirring condition to obtain the water-based composite flake zinc-aluminum anti-corrosion paint.
The preparation method of a water-based composite flake zinc-aluminum anti-corrosion paint according to claim 6, wherein in step (2), the speed of the first mixing and stirring is 400-600r/min, and the time is 15- 25min;

The speed of the second mixing and stirring is 800-1200r/min, and the time is 5-10min.
The preparation method of a water-based composite flake zinc-aluminum anti-corrosion paint according to claim 6, characterized in that, in step (3), the stirring speed is 800-1200r/min, and the time is 5-10min.
The method for preparing a water-based composite flake zinc-aluminum anti-corrosion paint according to claim 6, wherein in step (3), the natural cooling is performed to 20-30°C.
An application of the water-based composite flake zinc-aluminum anti-corrosion paint as claimed in any one of claims 1-5 in the preparation of a special paint for bridges.