KR101053928B1 - Composite for preventing adhesion and method of coating anti-adhesive having the composite - Google Patents

Abstract

PURPOSE: A composition for preventing adhesion is provided to completely prevent the adhesion of all adherents, to maintain the original color of the surface of a structure, and to enable the application to various materials. CONSTITUTION: A composition for preventing adhesion comprises 70~90 weight% of a base material and 10~30 weight% of a hardener. The base material includes 10~30 parts by weight of an acrylate-based compound, 5~15 parts by weight of a silicon-based compound, 10~30 parts by weight of glass frit, and the remaining amount of a first solvent. The hardener comprises 50~70 parts by weight of a diisocyanate-based compound and the remaining amount of a second solvent.

Description

Composition for anti-adhesion and method for coating anti-adhesive comprising same {COMPOSITE FOR PREVENTING ADHESION AND METHOD OF COATING ANTI-ADHESIVE HAVING THE COMPOSITE}

The present invention relates to a composition for preventing adhesion that prevents unwanted substances from adhering to the surface of a structure, such as an advertisement attached to a lamppost. It relates to an anti-adhesion composition which can be represented as it is and to an anti-adhesive coating method comprising the same.

Advertisements in the city have been illegally attached to building walls, bus stands, telephone poles, signposts, overpass pillars, street lamps, switchboards, viaducts, traffic lights, billboards, park fences, sculptures, etc.

Illegal attachments can spoil the beauty of the city and cause environmental pollution by adhesive layers contained in illegal posters and stickers. In order to remove such illegal deposits, a large amount of manpower and equipment needs to be periodically put in place, and thus, a high cost is required for removing illegal deposits.

In order to prevent the attachment of illegal attachments, as shown in FIG. 1, a protruding protective plate 110, which is not easily attached to advertisements, is attached to the structure 101 or a sheet having an anti-sticking function is attached to the structure surface. The method of attaching is used a lot.

However, these methods are not good in appearance, useless when using a very strong tape and the like, there is a problem that it is difficult to maintain the original color of the structure.

In addition, in order to prevent the adhesion of illegal deposits, a method of applying edible oil to the surface of the structure, etc. has been proposed, but these methods also tend to give a sense of disgust when the foreign material is stuck to long exposure.

An object of the present invention is to provide an anti-adhesion composition that provides a long-term anti-adhesive effect and can exhibit the color of the structure surface itself.

Another object of the present invention is to provide a method of coating the surface of the structure with an anti-sticking agent mixed with the composition and the volatile diluent.

The anti-sticking composition according to an embodiment of the present invention for achieving the above one object is 70 to 90% by weight and diisocyanate-based compound and agent comprising an acrylate compound, a silicone compound, a glass frit and a first solvent It comprises a 10 to 30% by weight of the curing agent containing a solvent. In this case, the first solvent includes cyclohexanone and methyl isobutyl ketone, and the second solvent includes n-butyl acetate.

Anti-adhesive coating method according to an embodiment of the present invention for achieving the above another object is a brush method, a roller method or a spray method to the anti-adhesive agent mixed 20 to 40 parts by weight of the volatile diluent to 100 parts by weight of the anti-sticking composition It is characterized in that the coating on the surface of the structure.

An anti-sticking agent comprising an anti-sticking composition according to the present invention has the following advantages.

First, the attachment of all attachments can be completely prevented. The anti-sticking agent according to the present invention forms very fine bends on the surface, and thus has anti-sticking properties with respect to all adhesives such as general tapes, packaging tapes, blue tapes, stickers, starch paste, and the like.

Second, the original shape and color of the structure can be maintained. The anti-sticking agent according to the present invention has transparent properties, so that the original color of the structure surface can be maintained as it is.

Third, it can be installed on a variety of materials, the construction is simple and the construction range is wide. According to the present invention, the anti-sticking agent can be applied to various materials such as iron, aluminum, stainless steel, concrete, cement, acrylic, plastic, and also can be applied by roll, brush spray, etc., thereby simplifying the construction and widening the construction scope. have.

Fourth, it is harmless to human body and safe. The anti-adhesion composition according to the present invention has an advantage that is harmless to the human body by being formed of environmentally friendly materials without harmful components.

Fifth, the antifouling effect lasts for a long time. The anti-sticking agent according to the present invention is transparent and does not change color, and has a merit that the anti-adhesion effect lasts for a long time by forming fine bends on the surface of the vehicle.

Figure 1 shows an example of attaching the protruding protective plate on the surface of the structure.
Figure 2a shows an example in which the anti-sticking agent comprising an anti-sticking composition according to the invention is coated on the structure surface.
FIG. 2B illustrates an example in which the undercoat layer is previously formed before coating the anti-sticking agent shown in FIG. 2A.
FIG. 2C illustrates an example in which an undercoat and a middle layer are formed in advance before coating the anti-sticking agent shown in FIG. 2A.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms, and only the embodiments make the disclosure of the present invention complete, and those skilled in the art to which the present invention pertains. It is provided to fully inform the person having the scope of the invention, which is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the anti-adhesion composition and the anti-adhesive coating method comprising the same according to a preferred embodiment of the present invention.

Adhesion Prevention Composition

The anti-adhesion composition according to the present invention is a curing agent comprising a 70 to 90% by weight of a main body containing an acrylate compound, a silicone compound, a glass frit and a first solvent, a diisocyanate compound and a second solvent. It consists of 10-30 wt%.

In the anti-adhesion composition according to the present invention, when the main ingredient including the acrylate-based compound, the silicone-based compound, and the glass frit is added to less than 70%, there is a problem in that the anti-sticking property is significantly lowered. In addition, when the curing agent containing a diisocyanate compound is added in less than 10% there is a problem that the rapid curing of the anti-sticking agent comprising a composition for preventing adhesion is not properly made.

Table 1 shows examples of changing the content ratio of the subject. The addition unit of each substance in Table 1 is gram (g).

TABLE 1

Referring to Table 1, in Example 1-1, in which the main content was only 65% by weight, the anti-adhesion was normal, and in Examples 1-6 in which the content of the curing agent was only 5% by weight, the anti-adhesion was excellent ( O) However, the curing time was at least twice as long as in Examples 1-1 to 1-5. Therefore, the anti-adhesion composition according to the present invention is preferably at least 70% by weight and at least 10% by weight of the curing agent.

On the other hand, in Table 1, the example of very good adhesion prevention in the Example (◎) was Example 1-3 containing the main body 80% by weight, the curing agent 20% by weight.

Subjects include acrylate based compounds, silicon based compounds, glass frits and a first solvent.

The acrylate-based compound included in the subject forms a fine chain on the surface of the coating layer upon curing and drying after coating the anti-sticking agent while forming a complex chain structure through curing.

Such acrylate compounds include methyl methacrylate (MMA), butyl acrylate monomer (BAM), n-butyl methacrylate (nBMA), and hydroxyethyl methacrylate. (HydroxyEthyl Metacrylate: HEMA) may be used, and these may be used alone or in combination of two or more thereof. Preferred examples of the acrylate compound include 250 to 400 parts by weight of the butyl acrylate monomer, 20 to 30 parts by weight of the n-part methacrylate and the hydroxyethyl methacrylate based on 100 parts by weight of methyl methacrylate. 40 to 60 parts by weight can be presented as a mixture. In addition, a light stabilizer such as Tinuvin-based material may be included to prevent the acrylate-based compound from being decomposed by sunlight.

The acrylate-based compound is preferably included in an amount of 10 to 30 parts by weight based on 100 parts by weight of the entire subject. When the acrylate compound is added in less than 10 parts by weight, there is a problem that the anti-sticking ability of the anti-sticking agent is significantly lowered, and when the acrylate-based compound exceeds 30 parts by weight, there is a problem that the coating of the anti-sticking agent is not well made. .

The silicone-based compound included in the subject may induce a lot of pruning of the acrylate-based polymer to make the chain structure complex and at the same time, to strengthen the hardness during coating.

The silicon compound may be a silane compound, a siloxane compound, silicon dioxide (SiO ₂ ), a silicate compound, a silicon ceramic, or the like, which may be used alone or in combination of two or more thereof. It is available.

The silicon-based compound is preferably included in an amount ratio of 5 to 15 parts by weight based on 100 parts by weight of the total main body. When the silicone compound is added in less than 5 parts by weight, the effect of the addition of silicon is insignificant, and if it exceeds 15 parts by weight, there is a problem in that fine bending of the surface of the coating film does not occur well after drying of the anti-adhesive agent, thereby lowering the anti-adhesion ability.

Glass frit included in the subject serves to improve the adhesion of the coating layer when coating the anti-sticking agent comprising the anti-sticking composition according to the present invention and to strengthen the hardness (hardness) together with the silicone compound.

The glass frit is preferably added in a content ratio of 10 to 30 parts by weight based on 100 parts by weight of the entire main body. If the glass frit is added in less than 10 parts by weight, the glass frit addition effect is not obtained, and if the glass frit exceeds 30 parts by weight, the stability of the composition is deteriorated.

The first solvent included in the subject includes cyclohexanone and methyl isobutyl ketone. The first solvent mixed with these materials stably dissolves the acrylate compound, the silicon compound, and the glass frit included in the subject, and serves to adjust the viscosity.

In addition to the cyclohexanone (Anone) and methyl isobutyl ketone (MIBK), the first solvent is methyl ethyl ketone (MEK) or diisobasic ester (Diisobasic) to improve dissolution characteristics. Ester: DBE) may be included. Preferably, as the first solvent, a mixed solvent having 100 parts by weight of cyclohexanone, 50 to 70 parts by weight of methyl isobutyl ketone, 20 to 40 parts by weight of methyl ethyl ketone and 15 to 30 parts by weight of diisobasic ester can be provided. have.

The first solvent may further include a dispersant to uniformly dissolve and disperse the acrylate compound, the silicone compound, and the glass frit. When the dispersant is excessively added, physical properties such as an acrylate compound may be modified. Therefore, the dispersant is preferably added in a range of about 10 parts by weight or less with respect to 100 parts by weight of the first solvent.

Table 2 shows examples in which the type and amount of acrylate compound were changed in the subject. The addition unit of each substance in Table 2 is gram (g).

TABLE 2

Referring to Table 2, Examples 2-1 to 2-6 were all excellent in the anti-adhesion (O), in particular, the embodiment of mixing 300 parts by weight of BAM, 25 parts by weight of nBMA, 50 parts by weight of HEMA with respect to 100 parts by weight of MMA In the case of 2-4, the adhesion preventing ability was very good (◎).

The curing agent includes a diisocyanate compound and a second solvent.

The diisocyanate compound contained in the curing agent plays a role of promoting hardening of a high molecular material such as an acrylate compound contained in the subject.

Such diisocyanate compounds include isophorone diisocyanate (IPDI), hexamethylene diisocyanate (HDI), and phenylene diisocyanate (P-PHENYLENE DIISOCYANATE: PPDI), naphthalene-1,5-diisocyanate (naphthylene-1,5-diisocyanate (NDI), dicyclohexylmethane-4,4-diisocyanate (H12MDI), O-tolidine Diisocyanate (TODI), etc. may be used. These can be used individually or in mixture of 2 or more types.

The diisocyanate compound is preferably added in an amount ratio of 50 to 70 parts by weight based on 100 parts by weight of the total curing agent. When the diisocyanate compound of the above content ratio is included in the curing agent, it shows the best curing ability.

The second solvent included in the curing agent can stably dissolve the diisocyanate compound, and includes n-butyl acetate (nBAc) that is easy to control viscosity.

The second solvent may further include methylcyclohexane and hexane as well as the n-butyl acetate. As a preferred example of the second solvent, a mixed solvent in which 100 parts by weight of n-butyl acetate, 15 to 25 parts by weight of methyl cyclohexane and 5 to 25 parts by weight of hexane may be presented.

The second solvent included in the curing agent or the first solvent included in the subject may be acetone, terpentin, naphtha, naphtha, or the like depending on the application method of the anti-sticking agent including the anti-sticking composition according to the present invention. Toluene, xylene, methyl ethyl ketone (MEK), dimethylformamide (DMF), and the like may be further included.

Table 3 shows examples in which the amount of the diisocyanate compound added in the curing agent is changed. The addition unit of each substance in Table 3 is gram (g).

[Table 3]

Referring to Table 3, Examples 3-1 to 3-6 were all excellent in the anti-adhesion (O), in particular 60 parts by weight of the diisocyanate compound with respect to 100 parts by weight of the total curing agent, the second solvent is n-butyl Example 3-3 in which 25 parts by weight of hexane, 25 parts by weight of methylcyclohexane and 50 parts by weight of acetone was mixed with respect to 100 parts by weight of acetate was very good (?).

Adhesive coating method

When the volatile diluent such as thinner and the anti-adhesive composition are mixed, a transparent liquid anti-adhesive agent can be prepared. Volatile diluents serve to dilute the anti-sticking agents and to control the viscosity to facilitate coating on the structure. The volatile diluent may be included in an amount of 20 to 40 parts by weight based on 100 parts by weight of the anti-sticking composition. When the content of the volatile diluent is less than 20 parts by weight, the effect of adding the volatile diluent is insignificant, and when the content of the volatile diluent exceeds 40 parts by weight, there is a problem that the adhesion preventing ability of the anti-sticking agent is significantly lowered.

The prepared anti-sticking agent may be coated on the surface of the structure by a brush method, a roller method, a spray method and the like.

At this time, the thickness of the anti-sticking agent to be coated is preferably 10 ~ 200㎛. When the thickness of the anti-sticking agent to be coated is less than 10㎛ the anti-sticking agent may be separated from the structure, when the thickness of the anti-sticking agent exceeds 200㎛ there is a problem that the coating cost is excessively required.

After coating the anti-adhesive including the anti-adhesive composition according to the present invention and undergoes a drying process, curing is performed while removing volatile substances. In particular, after analysis of the surface of the coating layer after the drying of the anti-adhesive agent, fine bends were formed on the surface of the coating layer, and the fine bends of the surface serve to hinder the adhesion of the material. The drying may be performed at room temperature, and may be performed by a hot air drying method at about 50 to 100 ° C. in order to speed up the drying speed.

The formed coatings showed good characteristics in the impact resistance test and the flex resistance test, and the water resistance was satisfactory because water did not penetrate even in hot water deposition at 40 ° C for 240 hours, and saline solution at 31 ° C for 240 hours at 5% brine condition. The spray test showed good characteristics and over 80% in the gloss retention rate of 2,000 hours using the Sunshine Meter.

FIG. 2A illustrates an example in which an anti-sticking agent comprising an anti-sticking composition according to the present invention is coated on a surface of a structure, and FIG. 2B illustrates an example in which an undercoating layer is previously formed before coating the anti-sticking agent shown in FIG. 2A. FIG. 2C illustrates an example of pre-forming the undercoat layer and the intermediate layer before coating the anti-sticking agent shown in FIG. 2A.

The anti-sticking agent 210 including the anti-sticking composition according to the present invention may be directly coated on the structure 201 as shown in FIG. 2A, and the structure as shown in FIG. 2B or 2C to improve the adhesion of the anti-sticking agent 210. After forming the undercoat 205 (FIG. 2B) or the undercoat 205 and the intermediate layer 207 on the surface of 201, the anti-sticking agent 210 may be attached. The bottom coat layer 205 and the middle coat layer 207 can be used as long as the material used as the bottom coat or the middle layer to improve adhesion in the general coating application, etc., after coating the transparent anti-sticking agent 210, the structure ( In order to keep the appearance of 201 beautifully, the undercoat 205 and the intermediate layer 207 are also preferably formed of a transparent material.

An anti-adhesion agent comprising the anti-adhesion composition according to the present invention can prevent the adhesion of the attachment to the telephone pole, switchboard, and the like, and can also prevent the unwanted substances from being attached to the ship.

Although the above has been described with reference to one embodiment of the present invention, various changes and modifications can be made at the level of those skilled in the art. Such changes and modifications may belong to the present invention without departing from the scope of the present invention. Therefore, the scope of the present invention will be determined by the claims described below.

101, 201: Structure
110: protruding protective plate
205: sub-floor
207: middle class
210: anti-sticking agent

Claims (10)

70 to 90% by weight of the main ingredient containing an acrylate compound, a silicone compound, a glass frit and a first solvent, and 10 to 30% by weight of a curing agent containing a diisocyanate compound and a second solvent,
The subject includes 10 to 30 parts by weight of the acrylate compound, 5 to 15 parts by weight of the silicone compound, 10 to 30 parts by weight of the glass frit and the remainder of the first solvent,
The acrylate compound includes 250 to 400 parts by weight of butyl acrylate monomer, 20 to 30 parts by weight of n-butyl methacrylate and 40 to 60 parts by weight of hydroxyethyl methacrylate based on 100 parts by weight of methyl methacrylate. ,
The first solvent comprises 50 to 70 parts by weight of methyl isobutyl ketone, 20 to 40 parts by weight of methyl ethyl ketone and 15 to 30 parts by weight of diisobasic ester, based on 100 parts by weight of cyclohexanone,
The curing agent includes 50 to 70 parts by weight of the diisocyanate compound and the balance of the second solvent,
The second solvent comprises 15 to 25 parts by weight of methylcyclohexane and 5 to 25 parts by weight of hexane based on 100 parts by weight of n-butyl acetate.
delete delete The method of claim 1,
The silicon compound is
A composition for preventing adhesion, comprising at least one compound among silane compounds, siloxane compounds, silicon dioxide, silicate compounds, and silicon ceramics.
delete delete The method of claim 1,
The diisocyanate compound is
At least one selected from isophorone diisocyanate, hexamethylene diisocyanate, fiphenylene diisocyanate, naphthalene-1,5-diisocyanate, dicyclohexylmethane-4,4-diisocyanate, and orolidine diisocyanate A composition for preventing adhesion.
delete Coating the surface of the structure in a brush, roller or spray method with an anti-sticking agent mixed with 20 to 40 parts by weight of a volatile diluent to 100 parts by weight of the anti-sticking composition according to any one of claims 1, 4 and 7. Anti-adhesive coating method characterized in that.
10. The method of claim 9,
The coating method
An anti-adhesive coating method characterized in that the coating of the anti-adhesive to 10 ~ 200㎛ thickness.

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