WO2020237419A1

WO2020237419A1 - AQUEOUS ANTISEPTIC PAINT SPRAYABLE DIRECTLY AT 300ºC, AND PREPARATION METHOD THEREFOR AND USE THEREOF

Info

Publication number: WO2020237419A1
Application number: PCT/CN2019/088312
Authority: WO
Inventors: 袁洪青; 王立群
Original assignee: 河北比尔尼克新材料科技股份有限公司
Priority date: 2019-05-24
Filing date: 2019-05-24
Publication date: 2020-12-03

Abstract

Disclosed is an aqueous antiseptic paint sprayable directly at 300ºC, and a preparation method therefor and the use thereof. The aqueous antiseptic paint is mainly made by compounding an aqueous organic silicon resin, a reactive auxiliary, an aqueous color paste and deionized water in a specific ratio. The aqueous paint, which is sprayed in a high-temperature environment of 300ºC, has the advantages of no shedding, no powdering, no discoloration and good adhesion, and also has an excellent antiseptic property, such that spraying under temperature, without blowing a furnace down, of an aqueous paint in a high-temperature fission furnace is achieved, a large amount of energy is saved, and also the aquation of a spray paint under temperature in the high-temperature fission furnace is also achieved, hazardous substances such as VOC in the spraying process are significantly decreased, and pollution to the environment is thus reduced.

Description

Water-based anticorrosive paint capable of being sprayed directly at 300℃ and its preparation method and application

Technical field

The present disclosure relates to the technical field of special coatings, in particular to a water-based anticorrosive paint that can be sprayed directly at 300°C, and a preparation method and application thereof.

Background technique

High-temperature fission furnaces in the petrochemical industry are often exposed to high temperatures and corrosive media. Therefore, they are easily corroded and perforated during use, which will bring great safety hazards to the safe operation of the equipment. Therefore, it is necessary to spray anticorrosive paint on the surface of the high-temperature fission furnace However, because the working temperature of the high-temperature fission furnace is as high as 300℃, it is difficult for ordinary anticorrosive paint to adhere to the surface of the high-temperature fission furnace. If the furnace is shut down for spraying, the shutdown and restart of the high-temperature fission furnace means a great energy consumption and Economic loss, so the spraying of high temperature fission furnace is usually carried out with temperature, and the spraying effect is not ideal. At the same time, the current protective coatings for high-temperature fission furnaces are mainly high-temperature resistant solvent-based coatings. Due to the high temperature in the spraying process, these solvent-based coatings will emit a large amount of toxic and harmful substances during the spraying construction process, which is harmful to the environment and The body of the construction personnel will have serious impacts,

Therefore, it has become necessary and urgent to research and develop a water-based paint with excellent anti-corrosion performance, while spraying at a high temperature of 300°C without falling off, no chalking, no discoloration, and good adhesion.

In view of this, this disclosure is hereby provided.

Public content

The first object of the present disclosure is to provide a water-based anticorrosive paint that can be sprayed directly at 300°C. The water-based paint sprayed under a high temperature environment of 300°C has no peeling, no chalking, no discoloration, and good adhesion. It has advantages and good anti-corrosion performance. It not only realizes continuous temperature spraying of high temperature fission furnace water-based paint, saves a lot of energy, and has high economic efficiency, but also realizes high temperature fission furnace temperature spray paint Water-based, reducing environmental pollution.

The second object of the present disclosure is to provide a method for preparing water-based anticorrosive paint that can be sprayed directly at 300°C. The preparation method has a simple process flow, does not require complex preparation and processing equipment, and does not require Produces toxic and harmful substances, is environmentally friendly, and has high economic efficiency.

The third object of the present disclosure is to provide an application of a water-based anticorrosive paint that can be sprayed directly at 300°C. The temperature-sprayable water-based paint can be widely used in the field of non-stop spraying in petrochemical high-temperature fission furnaces.

The present disclosure provides a water-based anticorrosive paint that can be sprayed directly at 300°C. In parts by mass, the water-based paint is mainly made of the following components:

70-80 parts of water-based silicone resin, 10-15 parts of water-based epoxy resin, 2-5 parts of reactive auxiliary agent, 5-10 parts of water-based color paste and 4-8 parts of deionized water.

Further, in terms of parts by mass, the water-based paint is mainly prepared from the following components:

72 to 78 parts of water-based silicone resin, 11 to 14 parts of water-based epoxy resin, 2 to 4 parts of reactive additives, 12 to 14 parts of water-based color paste, and 4 to 6 parts of deionized water.

Furthermore, in terms of parts by mass, the water-based paint is mainly prepared from the following components:

75 parts of water-based silicone resin, 13 parts of water-based epoxy resin, 3 parts of reactive additives, 13 parts of water-based color paste, and 5 parts of deionized water.

Further, the water-based paint also includes a coating auxiliary agent.

Furthermore, the coating additive includes 5-6 parts by weight of leveling agent and 3-4 parts of defoamer.

Preferably, in terms of parts by mass, the coating additive includes 5 parts of leveling agent and 3 parts of defoamer.

Further, the reactive auxiliary agent is a reactive silicone auxiliary agent.

Further, the water-based color paste is a silicone high-temperature-resistant water-based color paste.

The present disclosure provides a method for preparing the above-mentioned water-based anticorrosive paint that can be sprayed directly at 300°C. The preparation method includes the following steps:

The water-based silicone resin, water-based epoxy resin, reactive additives, water-based color paste, paint additives and deionized water are mixed uniformly and fully stirred to prepare a water-based anticorrosive paint that can be sprayed directly at 300°C.

Further, the stirring rate is 200-600 r/min.

Further, the particle size of the water-based anticorrosive paint that can be directly sprayed at 300°C is 5-10 microns.

Compared with the prior art, the beneficial effects of the present disclosure are:

The water-based anticorrosive paint that can be directly sprayed at 300°C provided by the present disclosure is mainly obtained by compounding water-based silicone resin, water-based epoxy resin, reactive additives, water-based color paste and deionized water in a specific ratio. The water-based paint sprayed in a high temperature environment of 300℃ has the advantages of no shedding, no chalking, no discoloration, good adhesion, and good anti-corrosion performance. It not only realizes the non-stop temperature of the high-temperature fission furnace water-based paint Spraying saves a lot of energy and has high economic efficiency. At the same time, it also realizes the water-based spray paint of high temperature fission furnace. VOC and other harmful substances are significantly reduced during the spraying process, which reduces environmental pollution.

The present disclosure provides a method for preparing water-based anticorrosive paint that can be sprayed directly at 300°C. The preparation method combines water-based silicone resin, water-based epoxy resin, reactive additives, water-based colorants, coating additives, and The ionized water is evenly mixed and then fully stirred to prepare a water-based anticorrosive paint that can be sprayed directly at 300℃. The above preparation method has a simple process flow, no complicated preparation and processing equipment is required in the preparation process, and no toxic and harmful substances are generated in the preparation process, which is environmentally friendly and has high economic efficiency.

The present disclosure provides an application of a water-based anticorrosive paint that can be sprayed directly at 300°C. The temperature-sprayable water-based paint can be widely used in the field of petrochemical high-temperature fission furnace coating.

Detailed ways

The embodiments of the present disclosure will be described in detail below in conjunction with examples, but those skilled in the art will understand that the following examples are only used to illustrate the present disclosure and should not be regarded as limiting the scope of the present disclosure. If specific conditions are not indicated in the examples, it shall be carried out in accordance with the conventional conditions or the conditions recommended by the manufacturer.

According to one aspect of the present disclosure, a water-based anticorrosive paint that can be sprayed directly at 300°C, in parts by mass, the water-based paint is mainly made of the following components:

70-80 parts of water-based silicone resin, 10-15 parts of water-based epoxy resin, 2-5 parts of reactive auxiliary agent, 10-15 parts of water-based color paste and 4-8 parts of deionized water.

The water-based anticorrosive paint that can be directly sprayed at 300°C provided by the present disclosure is mainly obtained by compounding water-based silicone resin, reactive additives, water-based color paste and deionized water in a specific ratio. The water-based paint is at a high temperature of 300°C. Spraying in the environment has the advantages of no falling off, no chalking, no discoloration, good adhesion, and good anti-corrosion performance. It not only realizes the non-stop temperature spraying of the high temperature fission furnace water-based paint, and saves a lot of energy. , It has high economic efficiency, and at the same time, it realizes the water-based spray paint for high-temperature fission furnace with temperature. During the spraying process, harmful substances such as VOC are significantly reduced, and the pollution to the environment is reduced.

The typical but non-limiting preferred embodiments of the above-mentioned water-based silicone resin are: 70 parts, 72 parts, 74 parts, 76 parts, 78 parts, and 80 parts; the typical but non-limiting preferred embodiments of the above-mentioned reactive auxiliary agent are: 2 parts, 3 parts, 4 parts and 5 parts; typical but non-limiting preferred embodiments of the above-mentioned water-based color paste are: 10 parts, 11 parts, 12 parts, 13 parts, 14 parts and 15 parts; the above-mentioned deionized water is typical But non-limiting preferred embodiments are: 4 parts, 5 parts, 6 parts, 7 parts and 8 parts.

In a preferred embodiment of the present disclosure, in parts by mass, the water-based paint is mainly prepared from the following components:

In the above preferred embodiment, in terms of parts by mass, the water-based paint is mainly made of the following components:

In the present disclosure, by further adjusting and optimizing the dosage ratio of each component raw material, the spraying technical effect of the water-based anticorrosive paint that can be sprayed directly at 300°C of the present disclosure is further optimized.

In a preferred embodiment of the present disclosure, the above-mentioned water-based silicone resin is a Kraft brand silicone resin.

In a preferred embodiment of the present disclosure, the water-based paint further includes a coating auxiliary agent.

In the above preferred embodiment, the coating aid includes 5-6 parts by weight of a leveling agent and 3-4 parts of a defoamer.

Typical but non-limiting preferred embodiments of the above-mentioned leveling agent are: 5 parts, 5.2 parts, 5.4 parts, 5.6 parts, 5.8 parts and 6 parts.

Preferably, the leveling agent is one or at least two of the following commercially available products: Byk 381, Byk 380, Tego 270, Tego 245, Tego 450, and Tego 410, and PW 336 , X 840.

Typical but non-limiting preferred embodiments of the aforementioned defoaming agent are: 3 parts, 3.2 parts, 3.4 parts, 3.6 parts, 3.8 parts and 4 parts.

Preferably, the defoamer is one or at least two of the following commercially available products: Byk 011, Byk 028, Byketol WS, Tego 805, Tego 803, Tego 901W, and Tego 843.

In a preferred embodiment of the present disclosure, the reactive auxiliary agent is a reactive silicone auxiliary agent.

As a preferred embodiment, the above-mentioned reactive organosilicon additive is a Tiger brand type 2845 organosilicon additive.

In a preferred embodiment of the present disclosure, the water-based color paste is a silicone high-temperature-resistant water-based color paste.

As a preferred embodiment, the water-based color paste is one or at least two of carbon black, medium yellow and scarlet.

According to one aspect of the present disclosure, a method for preparing the above-mentioned water-based anticorrosive paint that can be sprayed directly at 300°C, the preparation method includes the following steps:

The water-based silicone resin, reactive additives, water-based color paste, paint additives and deionized water are mixed uniformly and then fully stirred to prepare a water-based anticorrosive paint that can be sprayed directly at 300°C.

The present disclosure provides a method for preparing a water-based anticorrosive paint that can be sprayed directly at 300°C. The method for preparing a water-based silicone resin, a reactive additive, a water-based color paste, a coating additive, and deionized water is uniformly mixed and then fully stirred , The water-based anticorrosive paint can be sprayed directly at 300℃. The above preparation method has a simple process flow, no complicated preparation and processing equipment is required in the preparation process, and no toxic and harmful substances are generated in the preparation process, which is environmentally friendly and has high economic efficiency.

In a preferred embodiment of the present disclosure, the stirring rate is 200-600 r/min.

As a preferred embodiment, the above-mentioned stirring rate is 200-600 r/min, which can uniformly mix the raw materials in the water-based anticorrosive paint of the present disclosure.

Typical but non-limiting preferred embodiments of the aforementioned stirring rate are: 200r/min, 300r/min, 400r/min, 500r/min, and 600r/min.

In a preferred embodiment of the present disclosure, the particle size of the water-based anticorrosive paint that can be sprayed directly at 300°C is 5-10 microns.

As a preferred embodiment, the particle size of the water-based anticorrosive paint that can be directly sprayed at 300° C. is 5-10 microns, and the water-based paint of this particle size can be sprayed on the surface of the high-temperature fission furnace more uniformly.

In order to help a clearer understanding of the content of the present disclosure, it is now described in detail in conjunction with specific embodiments as follows. However, these embodiments are only exemplary and do not constitute any limitation to the scope of the present disclosure.

Example 1

A water-based anticorrosive paint that can be sprayed directly at 300°C. In parts by mass, the water-based paint is mainly made of the following components:

70 parts of water-based silicone resin, 10 parts of water-based epoxy resin, 2 parts of reactive additives, 10 parts of water-based color paste, 5 parts of leveling agent, 3 parts of defoaming agent and 4 parts of deionized water;

Wherein, the reactive additives are selected from Tiger brand 2845 silicone additives, the water-based color paste is selected from water-based carbon black paste, the leveling agent is selected from Tego 270, and the defoaming agent is selected from BYK Byk 011 ；

The preparation method of the above-mentioned water-based anticorrosive paint that can be sprayed directly at 300°C includes the following steps:

After mixing the water-based silicone resin, water-based epoxy resin, reactive additives, water-based color paste, coating additives and deionized water, fully stir it at a temperature of 20℃ for 30 minutes at a rate of 200r/min. The water-based anticorrosive paint sprayed directly at 300°C has a particle size of 5 microns.

Example 2

80 parts of water-based silicone resin, 15 parts of water-based epoxy resin, 5 parts of reactive additives, 15 parts of water-based color paste, 6 parts of leveling agent, 4 parts of defoamer and 8 parts of deionized water;

Wherein, the reactive additives are selected from Tiger brand 2845 silicone additives, the water-based color paste is selected from water-based carbon black paste, the leveling agent is selected from the pioneer PW336, and the defoamer is selected from BYK Byk011 ；

Mix the water-based silicone resin, water-based epoxy resin, reactive additives, water-based color paste, paint additives and deionized water evenly, and fully stir it at a temperature of 20℃ for 30 minutes at a rate of 600r/min. A water-based anticorrosive paint sprayed directly at 300°C, and the particle size of the water-based anticorrosive paint that can be sprayed directly at 300°C is 10 microns.

Example 3

72 parts of water-based silicone resin, 11 parts of water-based epoxy resin, 2 parts of reactive additives, 12 parts of water-based color paste, 5 parts of leveling agent, 4 parts of defoamer and 5 parts of deionized water;

Wherein, the reactive additives are selected from Tiger brand 2845 silicone additives, the water-based color paste is selected from water-based carbon black paste, the leveling agent is selected from BYK 380, and the defoaming agent is selected from BYK Byketol WS ；

Mix the water-based silicone resin, water-based epoxy resin, reactive additives, water-based color paste, coating additives and deionized water, and then fully stir it at a temperature of 20°C for 30 minutes at a rate of 300r/min. A water-based anticorrosive paint sprayed directly at 300°C, and the particle size of the water-based anticorrosive paint that can be sprayed directly at 300°C is 7 microns.

Example 4

78 parts of water-based silicone resin, 14 parts of water-based epoxy resin, 4 parts of reactive additives, 14 parts of water-based color paste, 6 parts of leveling agent, 3 parts of defoamer and 6 parts of deionized water;

Wherein, the reactive additives are selected from Tiger brand 2845 silicone additives, the water-based color paste is selected from water-based carbon black paste, the leveling agent is selected from BYK 381, and the defoaming agent is selected from BYK Byketol WS ；

After mixing the water-based silicone resin, water-based epoxy resin, reactive additives, water-based color paste, coating additives and deionized water, fully stir at a temperature of 20°C for 30 minutes at a rate of 400r/min to prepare a A water-based anticorrosive paint sprayed directly at 300°C, and the particle size of the water-based anticorrosive paint that can be sprayed directly at 300°C is 9 microns.

Example 5

75 parts of water-based silicone resin, 13 parts of water-based epoxy resin, 3 parts of reactive additives, 13 parts of water-based color paste, 5 parts of leveling agent, 3 parts of defoamer and 5 parts of deionized water;

The preparation method of the water-based anticorrosive paint that can be sprayed directly at 300°C includes the following steps:

Mix the water-based silicone resin, water-based epoxy resin, reactive additives, water-based color paste, paint additives and deionized water, and stir them at a rate of 500r/min for 30min at a temperature of 20℃. The water-based anticorrosive paint sprayed directly at 300°C has a particle size of 8 microns.

Comparative example 1

This comparative example is the same as in Example 5 except that it does not contain water-based epoxy resin.

Comparative example 2

This comparative example is the same as in Example 5 except that it does not contain reactive additives.

Experimental example 1

Test the volatile organic compound content (VOC) of the water-based paints prepared in Examples 1 to 5 and Comparative Examples 1 and 2 of this application, and the adhesion, hardness, corrosion resistance and other properties after spraying at 300°C The test results are shown in Table 1 below.

The specific detection method is:

Table 1: Technical effects of the water-based paints prepared in Examples 1 to 5 and Comparative Examples 1 and 2 of the application

In summary, the water-based anticorrosive paint that can be directly sprayed at 300°C provided by the present disclosure is mainly obtained by mixing water-based silicone resin, reactive additives, water-based color paste and deionized water in a specific proportion. Spraying in a high temperature environment of 300℃ has the advantages of no shedding, no chalking, no discoloration, good adhesion, and good anti-corrosion performance. It not only realizes the non-stop temperature spraying of high temperature fission furnace water-based paint, It saves a lot of energy and has high economic efficiency. At the same time, it also realizes the water-based spray paint of the high temperature fission furnace. VOC and other harmful substances are significantly reduced during the spraying process, which reduces environmental pollution.

Although specific embodiments have been used to illustrate and describe the present disclosure, it should be appreciated that many other changes and modifications can be made without departing from the spirit and scope of the present disclosure. Therefore, this means that all these changes and modifications that fall within the scope of the present disclosure are included in the appended claims.

Claims

A water-based anticorrosive paint that can be sprayed directly at 300°C, characterized in that, in parts by mass, the water-based paint is mainly prepared from the following raw materials:

70-80 parts of water-based silicone resin, 10-15 parts of water-based epoxy resin, 2-5 parts of reactive auxiliary agent, 5-10 parts of water-based color paste and 4-8 parts of deionized water.
The water-based anticorrosive paint that can be sprayed directly at 300°C according to claim 1, characterized in that, in parts by mass, the water-based paint is mainly made of the following components:

72 to 78 parts of water-based silicone resin, 11 to 14 parts of water-based epoxy resin, 2 to 4 parts of reactive additives, 12 to 14 parts of water-based color paste, and 4 to 6 parts of deionized water.
The water-based anticorrosive paint that can be sprayed directly at 300°C according to claim 1, characterized in that, in parts by mass, the water-based paint is mainly made of the following components:

75 parts of water-based silicone resin, 13 parts of water-based epoxy resin, 3 parts of reactive additives, 13 parts of water-based color paste, and 5 parts of deionized water.
The water-based anticorrosive paint that can be sprayed directly at 300°C according to any one of claims 1 to 3, wherein the water-based paint further comprises a coating additive;

Preferably, the coating auxiliary agent includes 5-6 parts by weight of a leveling agent and 3-4 parts of a defoamer.
The water-based anticorrosive paint that can be directly sprayed at 300°C according to any one of claims 1 to 3, wherein the reactive additive is a silicone additive.
The water-based anticorrosive paint that can be sprayed directly at 300°C according to any one of claims 1 to 3, wherein the water-based color paste is a silicone high-temperature-resistant water-based color paste.
A method for preparing a water-based anticorrosive paint that can be directly sprayed at 300°C according to any one of claims 1 to 6, characterized in that the preparation method comprises the following steps:

After mixing water-based silicone resin, water-based epoxy resin, reactive additives, water-based color paste, paint additives and deionized water, a water-based anticorrosive paint that can be sprayed directly at 300°C is prepared.
The method for preparing water-based anticorrosive paint that can be directly sprayed at 300°C according to claim 7, wherein the stirring rate is 200-600 r/min.
The method for preparing water-based anticorrosive paint that can be sprayed directly at 300°C according to claim 7, wherein the particle size of the water-based anticorrosive paint that can be sprayed directly at 300°C is 5-10 microns.
An application of the water-based anticorrosive paint that can be sprayed directly at 300°C according to any one of claims 1 to 6 in the field of petrochemical high-temperature fission furnace coating.