KR102452363B1 - Paint for preventing adhesion of one-liquid and coating method using same - Google Patents

Abstract

The present invention relates to a undiluted anti-adhesive coating composition, characterized in that it comprises a first subject included to improve adhesion and a second subject mixed with the first subject to form a main subject.

Description

One-liquid type anti-adhesion paint and coating method using the same

The present invention relates to a undiluted anti-adhesion paint and a coating method thereof, and more particularly, to a paint capable of preventing adhesion of advertisements such as leaflets to the surface of an external facility and a coating method using the same.

Currently, various facilities such as street lights, telephone poles, traffic lights, and power equipment switchboards are installed along the roadside. These roadside facilities are easy to attract the attention of passers-by, so illegal advertisements such as various stickers and posters are continuously attached. At this time, these illegal advertisements damage the appearance of the facility and inhibit the expression of the facility's unique function, and manpower and budget are continuously being put in to remove it.

In addition, as shown in FIG. 1 , most roadside facilities have a flat surface or a columnar shape such as a telephone pole, and once an advertisement is attached, the attachment is firmly fixed on a flat surface, so it is a physical method by manpower. As the attachments are not completely removed, the problem of deterioration of the aesthetics of the facility by contamination and damage occurs repeatedly as the installation period of the facility elapses.

In order to overcome this problem, as disclosed in FIG. 2, a method of installing a plate or film with an anti-adhesion function added to the facility is used, but a separate additional process is required for plate or film production, and the color or shape is limited. As a result, there is a limit to its use.

In addition to this, research on a functional paint composition that prevents adhesion of advertisements is being actively conducted, which can be freely selected in color and can be applied to various facilities. There is a problem in that the coating film itself lacks the physical durability that it should possess for protection, so that the coating film is easily peeled off from the facility even by a weak external impact.

In order to improve the functional deterioration of the coating film, a coating system to which a separate primer is applied as shown in FIG. 3 can be used, but a problem that causes an increase in the paint price and process cost according to the additional coating process occurs

In the case of a conventional anti-adhesion paint that implements anti-adhesion functionality by injecting a release agent with low surface tension into the paint, as shown in FIG. 3, sunlight, ultraviolet rays, heat, rain/snow, etc. As the desorption of the anti-adhesive functional material suspended on the surface is accelerated, there is a limit in that the anti-adhesion effect of advertisements is continuously reduced.

At the same time, when wax or silicone-based additives with low surface tension are added to the paint to implement the anti-adhesion function, the surface of the paint film shows a slippery or sticky film form as if it is oily, and the exposed paint film is protected against automobile exhaust gas and tire wear. As scattering materials and floating dust are easily attached and fixed, there is also a problem that the contamination of the exterior becomes severe even after a short period of time after installation of the facility.

An object of the present invention is to provide a undiluted anti-adhesion paint and a coating method using the same for preventing contamination and adhesion of external facilities.

In addition, the purpose of providing a undiluted anti-adhesive paint and a coating method using the same that maintains the anti-adhesion function for a long time without a separate primer coating treatment for reinforcing the adhesion of the preceding coating surface or the physical properties of the subsequent coating. do.

In addition, an object of the present invention is to provide a undiluted anti-adhesion paint with improved anti-adhesion functionality, chemical resistance, stain resistance, mechanical properties and weather resistance of the coating film, and a coating method using the same.

However, these problems are exemplary, and the scope of the present invention is not limited thereto.

According to one aspect of the present invention, there is provided a coating composition for preventing adhesion, comprising a first subject included to improve adhesion and a second subject mixed with the first subject to form a main subject. Anti-corrosive paint is provided.

According to an embodiment of the present invention, the first subject includes a polysiloxane resin, and the polysiloxane resin may be a silicone-modified acrylic resin represented by Formula 1 below.

[Formula 1]

According to an embodiment of the present invention, the polysiloxane resin may be included in an amount of 80 wt% to 95 wt% based on the anti-adhesion paint.

According to an embodiment of the present invention, the second subject may include a fluororesin, a crosslinking agent, an additive, and a solvent.

According to an embodiment of the present invention, it may be included in an amount of 10 wt% or less based on the anti-adhesion paint.

According to an embodiment of the present invention, it may be included in an amount of 1 wt% or less based on the anti-adhesion paint.

According to an embodiment of the present invention, the additive may include a UV stabilizer and a surface control agent.

According to an embodiment of the present invention, the UV additive may be included in an amount of 2 wt% or less based on the anti-adhesion paint.

According to an embodiment of the present invention, the surface control agent may be included in an amount of 0.5 wt% or less based on the anti-adhesion paint.

According to another aspect of the present invention, there is provided a method for coating an anti-adhesion paint, comprising the steps of pre-treating the surface of a substrate and coating the pre-treated surface of the pre-treated surface with a undiluted anti-adhesion paint to form an anti-adhesion coating layer It provides a coating method of a undiluted anti-adhesion paint comprising:

According to an embodiment of the present invention, the step of pre-treating the surface of the substrate may be to remove foreign substances from the surface of the substrate.

According to an embodiment of the present invention, the step of forming the coating layer may further include the step of forming a functional layer before forming the coating layer for preventing adhesion.

The present invention has the effect of providing a undiluted anti-adhesion paint and a coating method using the same for preventing contamination and adhesion of external facilities.

In addition, there is an effect that the anti-adhesion function is maintained for a long time without a separate primer coating treatment for reinforcing the adhesion of the previous coating surface of the coating film or the physical properties of the subsequent coating.

In addition, there is an effect of improving the adhesion prevention function of the coating film, chemical resistance, stain resistance, mechanical properties and weather resistance.

Further scope of applicability of the present invention will become apparent from the following detailed description. However, it should be understood that the detailed description and specific embodiments such as preferred embodiments of the present invention are given by way of illustration only, since various changes and modifications within the spirit and scope of the present invention may be clearly understood by those skilled in the art.

1 is an image of a facility contaminated by stickers and advertisements.
2 is an image of a facility in which an advertisement adhesion prevention plate is installed.
3 is a schematic view showing the deterioration of the anti-adhesion functionality according to the conventional coating layer coated with anti-adhesion paint and jadeite exposure.
4 is a flowchart illustrating a method of coating an anti-adhesion paint according to an embodiment of the present invention.
5 is a schematic view showing a paint coating layer for preventing adhesion according to an embodiment of the present invention.
6 is a graph showing the adhesion test results of the anti-adhesion paint according to an embodiment and a comparative example of the present invention.
7 is a graph showing the weather resistance test results of the anti-adhesion paint according to an embodiment and a comparative example of the present invention.
8 is a graph showing the adhesion test results according to the weather resistance of the anti-adhesion paint according to an embodiment and a comparative example of the present invention.
9 is an image showing the carbon contamination test results according to an embodiment and a comparative example of the present invention.
10 is an image showing the oily magic / lacquer contamination test results according to an embodiment and a comparative example of the present invention.

Hereinafter, the present invention will be described in detail with reference to embodiments and drawings of the present invention. These examples are only illustratively indicated to explain the present invention in more detail, and it will be apparent to those of ordinary skill in the art that the scope of the present invention is not limited by these examples. will be.

Further, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and in case of conflict, this specification, including definitions description will take precedence.

In order to clearly explain the invention proposed in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification. And, when a part "includes" a certain component, it means that other components may be further included, rather than excluding other components, unless otherwise stated. In addition, as described in the specification, “subordinate” refers to one unit or block that performs a specific function.

In each step, the identification code (first, second, etc.) is used for convenience of description, and the identification code does not describe the order of each step, and each step does not clearly describe a specific order in context. It may be performed differently from the order specified above.

That is, each step may be performed in the same order as specified, may be performed substantially simultaneously, or may be performed in the reverse order.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art to which the present invention pertains can easily practice the present invention.

Paints with anti-adhesion functionality are usually used in the form of physically mixing silicone-based raw materials (Oil, Rubber, Resin) with low surface tension with the paint, and particle types of various components for additional improvement of anti-adhesion performance The paint composition is designed in the form of injecting the filler into the paint.

Silicone-based raw materials are difficult to form a coating film alone at room temperature despite their excellent adhesion prevention function, are expensive, and have low compatibility with other paint resins, so their molecular weight is generally relatively short compared to rubber or resin. We are designing paints by using oil-type additives that are easy to mix. However, in the case of simple mixing (cold blending) of oil-based resins and silicone oil, which are widely used in paints, they appear uniformly dispersed in the initial stage of paint manufacturing, but phase separation proceeds immediately due to the difference in surface tension and polarity between the two materials.

When this type of coating is applied, the silicone-based material floats to the surface of the coating film during the drying process of the coating film, and a layer-separated coating film is formed in which a general coating material is located under the coating film. The silicone-based material suspended in this way is easily lost due to repeated attachment/detachment of external environmental factors (sunlight, ultraviolet rays, heat, rain/snow, etc.) or stickers, etc. brings the degradation of

In order to improve these problems, the present invention is to provide an anti-adhesion paint and a coating method using the same, excellent in anti-adhesion function, coating film strength, material adhesion, weather resistance and chemical resistance.

The present invention relates to a undiluted anti-adhesive coating composition, characterized in that it comprises a first subject included to improve adhesion and a second subject mixed with the first subject to form a main subject.

The first subject includes a polysiloxane resin, wherein the polysiloxane resin is a silicone-modified acrylic resin represented by the following formula (1).

[Formula 1]

The polysiloxane resin is included in the anti-adhesion paint to improve anti-adhesion functionality, coating film strength, material adhesion, and the like, and is preferably contained in an amount of 80 wt% to 95 wt% based on the anti-adhesion paint. In this case, when the polysiloxane resin is contained in an amount of less than 80 wt%, the anti-adhesion functionality may be reduced.

The second subject is characterized in that it includes a fluororesin, a crosslinking agent, an additive and a solvent.

The fluororesin is included in the anti-adhesion paint to improve weather resistance and chemical resistance, and is included in an amount of 10 wt% or less based on the anti-adhesion paint. For example, when the fluororesin is included in excess of 10 wt%, the weather resistance may be improved, but the anti-adhesion functionality may be reduced.

The crosslinking agent is included in the anti-adhesion paint to improve hardness, and is included in an amount of 1 wt% or less based on the anti-adhesion paint. For example, the crosslinking agent may include a carbodiimide type.

The additive is characterized in that it includes a UV stabilizer and a surface control agent.

The UV stabilizer is included in the anti-adhesion paint to improve weather resistance, and is included in an amount of 2 wt% or less based on the anti-adhesion paint. In this case, if the UV stabilizer is not included, the weather resistance function may be deteriorated.

In addition, the surface control agent is characterized in that it is contained in an amount of 0.5 wt% or less based on the anti-adhesion paint.

4 is a flowchart illustrating a coating method (S100) of an anti-adhesion paint according to an embodiment of the present invention.

Referring to FIG. 4, the coating method (S100) of the anti-adhesion paint is characterized in that it includes a pre-treatment step (S110) and a step (S120) of forming an anti-adhesion coating layer.

In detail, the pre-treatment step (S110) is a step of pre-treating the surface of the substrate on which the coating layer of the anti-adhesion paint is formed, and it is characterized in that foreign substances on the surface of the substrate are removed. When the foreign substances on the surface of the substrate are not removed cleanly, the adhesion of the coating layer including the anti-adhesion paint may be reduced.

The step of forming the anti-adhesion coating layer (S120) is characterized in that the coating layer for anti-adhesion is formed by coating the undiluted anti-adhesion paint on the surface of the pre-treated substrate. Specifically, the undiluted anti-adhesion paint formed by mixing the first and second subjects is coated on the surface of a pre-treated substrate, and in order to coat the anti-adhesion paint, air spray painting, roller painting and Methods such as electrostatic coating can be used, and there is no limitation on the coating method.

In addition, the step of forming the anti-adhesion coating layer (S120) may further include the step of forming a functional layer before forming the anti-adhesion coating layer. For example, the functional layer may be a paint layer for preventing corrosion or a paint layer for developing a color on the surface of the substrate.

That is, the coating layer 100 formed by using the coating method of the undiluted anti-adhesion paint described above may be formed of the substrate 110 and the anti-adhesion coating layer 120 having the surface pretreated as shown in FIG. 5 . In addition, when forming the functional layer before forming the anti-adhesion coating layer, the functional layer is preferably formed between the substrate 110 on which the surface is pretreated and the anti-adhesion coating layer 120 .

Hereinafter, the present invention will be described in detail through Examples and Experimental Examples. However, the following Examples and Experimental Examples only illustrate the present invention, and the present invention is not limited by the following Examples and Experimental Examples.

Example.

Examples 1 to 4

A undiluted anti-adhesion paint was prepared according to the composition content, including polysiloxane resin as the first subject and fluororesin, crosslinking agent, UV stabilizer, surface control agent and solvent as the second subject. Detailed compositions of Examples 1 to 4 are disclosed in Table 1.

Comparative Example 1, Comparative Example 2

A undiluted anti-adhesion paint containing polysiloxane resin was prepared as the first subject, and the specific composition is shown in Table 1 below.

division Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative Example 2 Polysiloxane resin (wt%) 84 84 84 84 100 94 Fluorine resin 1 (wt%) 10 10 Fluorine resin 2 (wt%) 10 10 Crosslinking agent (wt%) One One additive UV Stabilizer (wt%) 2 2 2 2 2 Surface control agent (wt%) 0.5 0.5 0.5 0.5 0.5 solvent PMA (wt%) 3.5 2.5 3.5 2.5 3.5 Sum 100 100 100 100 100 100

Experimental Example 1. Adhesion test

In order to compare the performance of the anti-adhesion paints prepared in Examples and Comparative Examples, an adhesion test was performed using a peel tester.

Experimental Example 2. Accelerated Weather Resistance Test

In order to compare the performance of the anti-adhesion paints manufactured in Examples and Comparative Examples, Xenon Arc Weather Ometer (Ci3000+, ATLAS) was used to promote the coating film under ISO 16474-2/11341 standard test conditions. Weather resistance After the test (960), the degree of discoloration (ΔE) of the coating film was measured.

6 is a graph showing the adhesion test results of the anti-adhesion paint according to an embodiment and a comparative example of the present invention.

Referring to FIG. 6 , the anti-adhesion paints prepared in Examples 1 to 4 and Comparative Examples 1 to 2 were measured lower than the KEPCO standard adhesion test standards (0.49 N/cm or less), and the adhesion was very high. You can check the excellent. That is, it can be confirmed that the adhesive strength is improved by using the polysiloxane resin through this.

7 is a graph showing the weather resistance test results of the anti-adhesion paint according to an embodiment and a comparative example of the present invention.

Referring to FIG. 7 , as the degree of discoloration (ΔE) of the coating film increases, the deterioration of the coating film progresses, and it can be expected that the physical functionality (material adhesion, hardness, chemical resistance, etc.) of the coating film ultimately deteriorates.

In addition, referring to Comparative Examples 1 and 2, it can be confirmed that the weather resistance is improved by about two times depending on whether or not the UV stabilizer is added.

In addition, in Examples 1 to 4, a fluorine resin was added, and as the fluorine resin was added, it was confirmed that the weather resistance was very excellent.

That is, it can be seen that the weather resistance of the anti-adhesion paint is improved by adding the UV stabilizer and fluorine resin.

Table 2 below shows the physical property test results for Examples 1 to 4, Comparative Examples 1 and 2, which are anti-adhesion coating compositions.

Item Way Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative Example 2 acid resistance 5%H ₂ SO ₄ Good Good Good Good Good Good my
alkalinity 5% NaOH Good Good Good Good Good Good Carbon
contaminant 10% carbon black, ΔE 0.46 0.45 1.78 20.4 26.4 15.7 impact resistance 300g*20cm, front/rear Good/
Good Good/
Good Good/
Good Good/
peeling Good/
peeling Good/
peeling Material
adherence C.C.T, 11*11 100/100 100/100 100/100 100/100 100/100 100/100 flexibility 1/8' Mandrel Good Good Good Good crack crack surface gloss 20/60,% 44/87 51/89 34/72 9/36 17/40 13/43 pencil hardness MITSUBISHI UNI 3H 4H H H 4H 4H

Referring to Table 8, Examples 1 and 2 in which fluororesin 1 is added have excellent compatibility with polysiloxane resin and fluororesin, and thus each resin is well expressed without deterioration in physical properties, and carbon contamination and weather resistance are very high compared to other paints. It was confirmed that it was excellent.

In addition, in Examples 3 and 4 in which the fluororesin 2 was added, the surface gloss and pencil hardness were lowered, but it was confirmed that other physical properties such as material adhesion, scratch resistance, alkali resistance were excellent as in Examples 1 and 2 can

In addition, it was confirmed that Comparative Examples 1 and 2, which did not contain a fluororesin, had excellent coating film hardness, but other physical properties such as carbon contamination, flexibility, and surface gloss were relatively poor.

That is, it can be confirmed that physical properties such as adhesion performance, impact resistance, carbon contamination, and surface gloss are improved as the fluororesin is added.

8 is a graph showing the adhesion test results according to the weather resistance of the anti-adhesion paint according to an embodiment and a comparative example of the present invention.

First, Comparative Examples 3 to 5 are commercially available ready-made products that contain a filler and a curing agent for improving functionality. Referring to FIG. 8 , the initial adhesion prevention performance of Examples and Comparative Examples was similar.

However, while the adhesive force Peel resistance value of the ready-made products of Comparative Examples 3 to 5 after 960 hours exceeds the KEPCO standard value (0.49N/cm), Examples 1 to 4, Comparative Examples 1 to 2 It can be seen that the anti-adhesion paint shows an excellent value without change. That is, it can be confirmed that the anti-adhesion paint of the present invention has superior adhesion performance over time compared to the ready-made product.

Experimental Example 3. Stain resistance test

A comparative test was performed on the stain resistance test item, which is a major physical property test item in the KEPCO standard (ES-9905-0015, anti-adhesion material) for anti-adhesion coating composition.

Conventional anti-adhesion paints implement anti-adhesion functionality by injecting wax or silicone-based additives with low surface tension into the paint, and it can be seen that the surface of the paint film has a slippery or sticky film shape as if it is smeared with oil. Accordingly, there was a problem in that automobile exhaust gas, fugitive substances due to tire wear, and floating dust were easily attached and fixed, and the exterior was severely polluted. Accordingly, a carbon contamination test and an oily magic/lacquer contamination test were performed.

In detail, in order to carry out the carbon contamination test, a carbon slurry was applied to the dried anti-adhesion coating film, dried and washed with water, and in order to proceed with the oil-based magic/lacquer contamination test, the coating film was coated with oil-based magic/lacquer tape, The color difference was measured by washing with ethanol or water.

9 is an image showing the carbon contamination test results according to an embodiment and a comparative example of the present invention, and FIG. 10 is an image showing the oily magic/lacquer contamination test result according to an embodiment and a comparative example of the present invention. In addition, Table 3 shows the change in color difference according to each Example and Comparative Example.

Example 1 Comparative Example 1 Comparative Example 4 Comparative Example 5 Carbon
contaminant Color difference (ΔE) 0.45 26.4 1.78 15.7 meteor magic/
Lacquer Contamination Color difference (lacquer/tape) 0.28 0.27 0.41 not measurable Color difference (lacquer/ethanol) 0.25 0.22 0.48 0.14 Color difference (lacquer/water) 0.12 0.13 0.22 not measurable Color difference (oily magic/water) 0.22 0.53 25.93 not measurable

First, FIGS. 9 and 10 (a) are the paint of Example 2, FIGS. 9 (b) and 10 (b) are Comparative Example 1, FIGS. 9 (c) and 10 (c) are the acrylic of Comparative Example 4 It is a paint for preventing adhesion of urethane, and FIGS. 9 (d) and 10 (d) show the carbon contamination and oil-based magic/lacquer contamination test results using the acrylic urethane paint for general iron of Comparative Example 5.

Through this, when the composition of Example 2 is used, it can be confirmed that carbon contamination and oily magic/lacquer contamination are superior to those of Comparative Example.

That is, through this, the undiluted anti-adhesion coating composition of the present invention does not contain a curing agent and a particulate filler to supplement the anti-adhesion function, and has acid resistance, alkali resistance, material adhesion, and impact resistance even without adding a curing agent and filler. And it can be confirmed that the flexibility and the like are very excellent.

In this specification, only a few examples among the various embodiments performed by the present inventors will be described, but the technical spirit of the present invention is not limited or limited thereto, and it is of course that it may be modified and variously implemented by those skilled in the art.

Claims (12)

It relates to a coating composition for preventing adhesion, comprising:
a first subject included to improve adhesion; and
Including; a second theme that is mixed with the first theme to form a theme;
The first subject is to include a polysiloxane resin,
The polysiloxane resin is a silicone-modified acrylic resin represented by the following Chemical Formula 1,
The polysiloxane resin is
Which is included in 80wt% to 95wt% based on the anti-adhesion paint,
An undiluted anti-adhesion paint.
[Formula 1]

delete delete The method of claim 1,
The second topic is,
Which includes a fluororesin, a crosslinking agent, an additive and a solvent,
An undiluted anti-adhesion paint. 5. The method of claim 4,
The fluororesin is
Which is included in 10 wt% or less based on the anti-adhesion paint,
An undiluted anti-adhesion paint. 5. The method of claim 4,
The crosslinking agent
It is included in 1 wt% or less based on the anti-adhesion paint,
An undiluted anti-adhesion paint. 5. The method of claim 4,
The additive is
Which includes a UV stabilizer and a surface control agent,
An undiluted anti-adhesion paint. 8. The method of claim 7,
The UV stabilizer
Which is included in an amount of 2 wt% or less based on the anti-adhesion paint,
An undiluted anti-adhesion paint. 8. The method of claim 7,
The surface control agent
It is included in 0.5 wt% or less based on the anti-adhesion paint,
An undiluted anti-adhesion paint. pre-treating the surface of the substrate; and
Forming an anti-adhesion coating layer by coating a undiluted anti-adhesive paint on the surface of the pre-treated substrate to form an anti-adhesion coating layer;
The anti-adhesion paint includes a first subject included to improve adhesion and a second subject mixed with the first subject to form a subject; and
The first subject includes a polysiloxane resin,
The polysiloxane resin is a silicone-modified acrylic resin represented by the following Chemical Formula 1,
The polysiloxane resin is included in 80 wt% to 95 wt% based on the anti-adhesion paint,
Coating method of undiluted anti-adhesion paint.
[Formula 1]

11. The method of claim 10,
The step of pre-treating the surface of the substrate,
To remove foreign substances on the surface of the substrate,
Coating method of undiluted anti-adhesion paint. 11. The method of claim 10,
The step of forming the anti-adhesion coating layer,
Forming a functional layer before the formation of the anti-adhesion coating layer; further comprising a,
Coating method of undiluted anti-adhesion paint.

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