KR100408487B1 - Surface grinding and durable coating agent for aluminium ware of buildings and method for manufacturing the same - Google Patents

Abstract

The present invention relates to a surface polishing and durable improvement coating material of aluminum building materials, and a method of manufacturing the same. The object of the present invention is to homogeneously remove the surface contamination of aluminum building material by polishing and removing surface contaminants more easily, and to improve the durability of the surface layer. The coating layer can be obtained at the same time, and furthermore, since such a material is mainly used in an exposed site, it is to provide a coating material and a method of manufacturing the same, which are made of materials that are harmless to the user and do not pollute the surrounding environment.

The present invention provides a surface polishing and durable coating for the aluminum building material, comprising: 1 to 20 wt% abrasive, 0.1 to 10 wt% surfactant, 1 to 10 wt% cross-linked silicone resin, and the other surface to the aluminum building material And durability improvement coating material and its manufacturing method are the summary of this invention.

Description

SURFACE GRINDING AND DURABLE COATING AGENT FOR ALUMINIUM WARE OF BUILDINGS AND METHOD FOR MANUFACTURING THE SAME}

The present invention relates to a surface polishing and durable improvement coating material of aluminum building materials, and a method for manufacturing the same, and in particular, using a simple tool such as a cloth or a loofah on a contaminated surface of aluminum material, which is widely used as a construction curtain wall, panel, and window material. The present invention relates to a coating material and a method for manufacturing the same, which can be easily polished and removed to form a durable coating layer, thereby preventing long-term durability by preventing attachment of new contaminants.

In general, aluminum products are often used under relatively stable conditions of passivation in neutral solutions.However, when salt, SO _x , harmful metal dust or rainwater, etc. in the air adhere to them, they cause local corrosion (corrosion) and special effects in the air. Corrosion due to chemical reaction with water, orientation difference between crystal grains, grain boundary corrosion, peeling corrosion, contact with dissimilar metals due to presence of trace impurities in grain boundary, alkali component and water Corrosion is caused by reaction with.

In addition, the corrosion is different depending on various environmental conditions, but the rapid deterioration of the surface treatment (anode oxide or composite film) from about 4 to 5 years after the completion of the product, and around 10 years when the color begins to stain Since the surface of the spot becomes noticeable, and experience shows that the deterioration tends to be faster because it is more easily blocked by parapets than the surface washed in rainwater, and the corrosion particles are easily attached to the parts that are difficult to wash in the rainwater.

Particularly, if the corrosion on the surface is left unattended, the corrosion increases and cross-sectional defects occur around 10-15 years, and it becomes a fatal situation. Around 10-15 years from the aluminum window frame, from the salinity of the filling mortar and the deteriorated part of the outer wall. Infiltration water or condensation can cause corrosion from the back of the window frame, which may cause the window frame to deform or cause cross-sectional defects.

Therefore, in order to use this aluminum product in a beautiful form for a long time, it is necessary to regularly remove corrosive substances 4 to 5 years before the surface treatment part starts to corrode. It is necessary to ensure long-term durability by preventing reattachment of the material.

On the other hand, when looking at the cleaning of the contaminated surface of the conventional aluminum product or the kind of coating material and coating method, there is a method of cleaning only with water and the addition of a neutral detergent first, but if you do this cleaning any contaminants attached to the surface It can be removed to some extent, but more harmful contaminants with strong adhesion that are already initiating an electrical or chemical reaction cannot be removed.

In addition, shortly after washing, contaminants are newly attached to promote the progress of corrosion.

In order to overcome this problem, there is a chemical coating material which cleans the surface as described above, and then applies a thermosetting acrylic resin, a polyurethane resin, a polyester resin, a fluorine resin, etc. to the surface. There is a disadvantage that discoloration (yellowing) easily due to the effect, and also in the case of a transparent creeper coating, the surface may not be able to obtain a uniform gloss on the surface alone may cause defects such as staining after application.

Therefore, in order to overcome such a problem, a method of roughly polishing the aged surface with a grinder or the like to make sure the background adjustment, air blowing the base surface to make it clean, and then applying a primer and a coating material has been proposed and used.

However, this method is complicated and requires a precise construction process, it is difficult and difficult disadvantages, such as a certain drying curing after coating, can not obtain the desired results if not strictly performed according to a predetermined process on the scaffold of the site.

An object of the present invention for solving the above problems is to obtain a homogeneous coating layer at the same time to remove the surface contamination of the aluminum building material more easily by polishing the surface contaminants, improve the durability of the surface layer, and also Since the material is mainly used in an exposed site, it is to provide a coating material and a method of manufacturing the same, which are made of materials that are harmless to the user and do not pollute the surrounding environment.

The above object is strongly adhered to the surface of the aluminum product to polish and remove the contaminated surface so as to completely remove the contaminants that electrically or chemically corrode the aluminum surface, and at the same time to form a durable coating layer of new contaminants The present invention relates to a coating material that prevents adhesion and ensures long-term durability. The coating material strongly adheres to the surface of the aluminum material to completely adsorb and remove the contaminants that electrically or chemically corrode the aluminum surface. Activated carbon, diatomaceous earth, acid clay mainly composed of silicon oxide or aluminum oxide, activated clay treated chemically with acidic clay, and hydrous amorphous silicon dioxide (SiO ₂₎ · nH ₂ from the group consisting of silica gel, or bentonite O) 1-20 wt% of one or more of the selected ones are mixed into abrasives, and at least one anion selected from the group consisting of alkylbenzenes, higher alcohols, or α-olefins having an active charge of (-) as a surfactant. 0.1-10 wt% of (union) -based activator is added, and crosslinking silicone resins capable of forming a durable coating layer containing petroleum hydrocarbon as a solvent for long-term durability after polishing and removing contaminants 1 It is made by diluting by adding ~ 10wt% and coating material that can be easily polished and coated by rubbing the aluminum surface by impregnating it with a simple tool such as cloth or loofah so that it can be easily worked even in the exposed construction site. It is achieved by providing a manufacturing method.

When explaining the configuration and the operation of the embodiment of the present invention to achieve the object as described above and to perform the problem for removing the conventional defects in detail.

Surface polishing and durability improvement coating material of the aluminum building material for polishing the contaminated surface of the aluminum building material, which is widely used as curtain wall, panel, window material of the present invention, and at the same time to more easily form a surface coating layer for improved durability It is characterized by consisting of -20 wt% abrasive, 0.1-10 wt% surfactant, 1-10 wt% crosslinking type silicone resin, and the remainder with water.

The surface abrasives contained in the surface grinding and durability-improving coating materials of the aluminum building material include activated carbon, diatomaceous earth, acidic clay mainly composed of silicon oxide or aluminum oxide, and acidic clay which have a surface area of about 1000 to 2500 m2 / g. At least one selected from the group consisting of treated activated clay, silica gel of hydrous amorphous silicon dioxide (SiO ₂ · nH ₂ O), or bentonite is used. Particularly, diatomaceous earth having a porosity of 60% to 90% or more, Silica gel of amorphous silicon dioxide (SiO ₂ · nH ₂ O) is preferred. The surface abrasive should be fine with a surface area of 1000 to 2500 m 2 / g.

The reason for the limited surface area is that when the surface area is less than 1000 m 2 / g, the viscosity is high, so that it is difficult to use as a coating material, and it is not possible to obtain a homogeneous polishing effect. On the contrary, when the surface area exceeds 2500 m 2 / g, the polishing effect is not obtained. to be.

In addition, it is preferable that at least one or more of 100 wt% of the coating material is mixed in an amount of 1 to 20 wt% with respect to the above-described surface abrasive included in the surface polishing and durable improvement coating material of the aluminum building material of the present invention.

The reason for this limitation is that when the surface abrasive is less than 1wt%, the polishing effect is not obtained because of the surface polishing property, and when it exceeds 20wt%, it is difficult to adjust the homogeneous ground due to the excessive polishing effect, and also it has high viscosity and practical problems. In particular, the surfactant is an alkylbenzene type such as linear dodecylbenzene sodium sulfate, which is represented by the following general formula (1), in which the active portion has a negative charge, and then [ At least one anion (union) system selected from the group consisting of higher alcohols, such as saturated high alcohol sodium sulfate, which is represented by Formula 2, and α-olepin, which is represented by the following Formula 3, as a representative example. A surfactant is used. Among them, the higher alcohols having 14 to 16 carbon atoms are particularly preferable among the saturated higher alcohol sodium sulfate of [General Formula 2]. , , .

As the surfactant contained in the surface polishing and durable improvement coating material of the aluminum building material of the present invention, since the charge of the cation (cation) is formed in the aluminum surface corrosion part, the active part needs to have a negative charge. As the anionic (union) -based activator, it is necessary to add 0.1 to 10 wt% of at least one selected from the group consisting of alkylbenzene series, higher alcohol series, or α-olefin group.

The reason for the limitation is that when the added amount is less than 0.1wt%, it is not possible to remove all of the charges of the cations generated on the surface, and it is easy to corrode after coating, and on the contrary, when it exceeds 10wt%, it is uneconomical.

In addition, in order to secure long-term durability after the polishing and removal of contaminants, it is necessary to add 1 to 10 wt% of a crosslinking silicone resin that can obtain a coating layer having excellent durability using petroleum hydrocarbon as a solvent.

The reason for the limitation is that the coating layer is weak at less than 1wt%, and thus the durability is insufficient. On the contrary, if it exceeds 10wt%, it is not only economically inferior, but also the storage stability is low. The crosslinked silicone resin of the polyorganosiloxane-polyoxyalkylene copolymer like following [formula 4] is used.

The method of making the surface polishing and durability improvement coating material of the aluminum building material of the present invention is as follows.

Activated carbon, diatomaceous earth, acidic clay mainly composed of silicon oxide or aluminum oxide, activated clay treated with chemically based acidic clay, and hydrous amorphous silicon dioxide in acidic or neutral water. Mixing 1 to 20 wt% of at least one abrasive selected from the group consisting of silica gel of SiO ₂ · nH ₂ O) or bentonite, and stirring the mixture;

After the step, the active portion is dissolved by adding 0.1-10 wt% of at least one anionic (union) -based surfactant selected from the group consisting of an alkylbenzene-based, higher alcohol-based, or α-olepin-based charge having a negative (-) charge. Steps,

It is characterized in that it is prepared through the step of dissolving by adding 1 to 10wt% cross-linked silicone resin using a petroleum hydrocarbon as a solvent.

In addition, when dissolving each component, there may be some heat generation, so it is necessary to dissolve while maintaining the water temperature at 30 ° C or less.

On the other hand, the aluminum building material surface polishing and durability improvement coating material of the present invention can be mixed with other additives as necessary in addition to the above essential components, the working method is usually wet with a cloth, a loofah, etc., a cleaning tool that can be easily obtained by hand Rub can be used, even rubbing evenly.

Hereinafter, a method of manufacturing the aluminum building material surface polishing and durability improving coating material and an actual use example will be described according to preferred embodiments.

<Example 1>

Add 9wt% of water and 1wt% of diatomaceous earth as an abrasive while stirring, add 0.1wt% of alkylbenzene surfactant at the time when the aqueous solution becomes uniform, and stir until it becomes uniform again, 1 wt% of a silicone-based resin dissolved in a solvent based on a hydrocarbon was slowly added thereto, followed by stirring to obtain a translucent liquid having a viscosity. This liquid was extremely stable against long term storage.

200 g of coating material prepared by this method was soaked in a cloth, and then the aluminum surface, which had been electrically corroded in an aqueous sodium chloride solution having a size of 10 × 50 × 2 mm, was rubbed for 1 minute with uniform force in a room of 20-25 ° C. And the coating film was confirmed.

At this time, the polishing method was visual observation, and the coating film effect was evaluated by the contact angle and the situation of contamination by dropping one drop of ink solution.

Also, for comparison, washing with ordinary water was performed at the same time.

As a result, it was found that the surface polishing effect and the degree of contamination were significantly different and the contact angle was larger than the specimens washed with ordinary water.

<Example 2>

Add 78.9 wt% of water and slowly add 20 wt% of diatomaceous earth as an abrasive while stirring, add 0.1 wt% of alkylbenzene surfactant at the time when the aqueous solution becomes uniform, and stir until uniform, and then add petroleum 1 wt% of a silicone-based resin dissolved in a solvent based on a hydrocarbon was slowly added thereto, followed by stirring to obtain a translucent liquid having a viscosity.

This liquid, although somewhat more viscous, was not practically unusable and showed extremely stable long-term preservation.

200 g of coating material prepared by this method was soaked in a cloth in the same manner as in Example 1, and then the aluminum surface, which had been electrically corroded in an aqueous sodium chloride solution having a size of 10 x 50 x 2 mm, was uniform in a room at 20 to 25 ° C. Rubbing with a force for 1 minute confirmed the polishing effect and the coating film.

At this time, the polishing method was visual observation, and the coating film effect was evaluated by the contact angle and the situation of contamination by dropping one drop of ink solution.

Also, for comparison, washing with ordinary water was performed at the same time.

As a result, it was found that the surface polishing effect and the degree of contamination were significantly different and the contact angle was larger than the specimens washed with ordinary water.

<Example 3>

Add 20 wt% of diatomaceous earth as an abrasive to water with 69wt% of abrasive and slowly add to it.At the time when the aqueous solution becomes uniform, add 10wt% of alkylbenzene surfactant and stir until it becomes uniform again. 1 wt% of the silicone resin dissolved in the solvent was slowly added to form a semi-transparent liquid having a viscosity.

The liquid was somewhat more viscous but had no practical problems and was extremely stable against long term storage.

200 g of coating material prepared by this method was soaked in a cloth in the same manner as in Example 1, and then the aluminum surface, which had been electrically corroded in an aqueous sodium chloride solution having a size of 10 x 50 x 2 mm, was uniform in a room at 20 to 25 ° C. Rubbing with a force for 1 minute confirmed the polishing effect and the coating film.

At this time, the polishing method was visual observation, and the coating film effect was evaluated by the contact angle and the situation of contamination by dropping one drop of ink solution.

Also, for comparison, washing with ordinary water was performed at the same time. As a result, it was found that the surface polishing effect and the degree of contamination were significantly different and the contact angle was larger than the specimens washed with ordinary water.

<Example 4>

Add 60 wt% of water and slowly add it while stirring with 20wt% of diatomaceous earth as an abrasive, and at the time when the aqueous solution becomes uniform, add 10wt% of alkylbenzene surfactant and stir until it becomes uniform again, and then add petroleum hydrocarbon. 10 wt% of the silicone resin dissolved in the solvent was slowly added to form a semi-transparent liquid having a viscosity. This liquid is extremely stable against long term storage.

200 g of coating material prepared by this method was soaked in a cloth in the same manner as in Example 1, and then the aluminum surface, which had been electrically corroded in an aqueous sodium chloride solution having a size of 10 x 50 x 2 mm, was uniform in a room at 20 to 25 ° C. Rubbing with a force for 1 minute confirmed the polishing effect and the coating film.

At this time, the polishing method was visual observation, and the coating film effect was evaluated by the contact angle and the situation of contamination by dropping one drop of ink solution.

Also, for comparison, washing with ordinary water was performed at the same time.

As a result, it was found that the surface polishing effect and the degree of contamination were significantly different and the contact angle was larger than the specimens washed with ordinary water.

Example 5

To 70 wt% of water, the abrasive was changed to bentonite and slowly added while stirring using 10 wt%, and when the aqueous solution became homogeneous, 10 wt% of alkylbenzene-based surfactant was added and stirred until it became uniform again. 10 wt% of a silicone-based resin dissolved in a solvent based on a hydrocarbon was slowly added thereto, and stirred to form a translucent liquid having a viscosity.

This liquid has a high viscosity, which may be a practical problem, but shows good stability for long term storage.

200 g of coating material prepared by this method was soaked in a cloth in the same manner as in Example 1, and then the aluminum surface, which had been electrically corroded in an aqueous sodium chloride solution having a size of 10 x 50 x 2 mm, was uniform in a room at 20 to 25 ° C. Rubbing with a force for 1 minute confirmed the polishing effect and the coating film.

At this time, the polishing method was visual observation, and the coating film effect was evaluated by the contact angle and the situation of contamination by dropping one drop of ink solution.

Also, for comparison, washing with ordinary water was performed at the same time.

As a result, it was found that the surface polishing effect and the degree of contamination were significantly different and the contact angle was larger than the specimens washed with ordinary water.

<Example 6>

To 70 wt% of water, the abrasive was changed to acidic clay and slowly added with 20wt% while stirring, and when the aqueous solution became uniform, 10wt% of alkylbenzene-based surfactant was added and stirred until it became uniform again. 10 wt% of the silicone resin dissolved in petroleum hydrocarbon as a solvent was slowly added thereto, followed by stirring to obtain a translucent liquid having a viscosity.

This liquid tends to have a slightly higher viscosity but is not a problem at all in practical use, and also shows good stability against long-term storage.

200 g of coating material prepared by this method was soaked in a cloth in the same manner as in Example 1, and then the aluminum surface, which had been electrically corroded in an aqueous sodium chloride solution having a size of 10 x 50 x 2 mm, was uniform in a room at 20 to 25 ° C. Rubbing with a force for 1 minute confirmed the polishing effect and the coating film.

At this time, the polishing method was visual observation, and the coating film effect was evaluated by the contact angle and the situation of contamination by dropping one drop of ink solution.

Also, for comparison, washing with ordinary water was performed at the same time.

As a result, it was found that the surface polishing effect and the degree of contamination were significantly different and the contact angle was larger than the specimens washed with ordinary water.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

Therefore, the surface polishing and durability improvement coating material of the aluminum building material of the present invention not only removes contaminants adhered to the surface of the conventional art, but also removes all of the contaminants strongly adhered to the surface by smoothly removing them. In addition, by increasing the durability by forming a cross-linked silicone-based coating layer on the removed surface, in the actual use it is possible to achieve this effect by simply rubbing the coating material using a simple tool such as cloth or loofah Therefore, the conventional complicated surface treatment and coating process can be significantly reduced, and in particular, it is composed of an inorganic water-soluble material is harmless to the user, and may have the advantage of not polluting the surrounding environment at all.

Claims (7)

In the surface polishing and durability improvement coating of the aluminum building material, 1 to 20 wt% abrasive, 0.1 to 10 wt% surfactant, 1 to 10 wt% cross-linked silicone resin, and the remainder of water, The abrasive is activated carbon, diatomaceous earth, acidic clay mainly composed of silicon oxide or aluminum oxide, activated clay treated with acidic clay as a raw material, silica gel of hydrous amorphous silicon dioxide (SiO ₂ · nH ₂ O), and bentonite. Using one or more selected from a crowd of people, The surfactant has an active moiety having a negative charge " Alkylbenzene system, satisfying the " " High grade alcohol system, satisfying " ", Using one or more selected from the group consisting of α- orene-based satisfying, The crosslinking type silicone resin is a solvent containing petroleum hydrocarbon. " " Aluminum building material surface polishing and durability improvement coating material, characterized in that the composition is made of a cross-linked silicone resin that satisfies. delete The method of claim 1, The surface area of the abrasive is a surface polishing and durability improvement coating material of the aluminum building material, characterized in that 1000 to 2500 m 2 / g. delete delete In the manufacturing method of aluminum building material surface polishing and durable improvement coating material, Activated carbon, diatomaceous earth, acidic clay mainly composed of silicon oxide or aluminum oxide, activated clay treated with chemically based acidic clay, and hydrous amorphous silicon dioxide in acidic or neutral water. Mixing 1 to 20 wt% of at least one abrasive selected from the group consisting of silica gel of SiO ₂ · nH ₂ O) or bentonite, and stirring the mixture; After the step, the active portion is dissolved by adding 0.1-10 wt% of at least one anionic (union) -based surfactant selected from the group consisting of an alkylbenzene-based, higher alcohol-based, or α-olepin-based charge having a negative (-) charge. Steps, A method for producing an aluminum building material surface polishing and durability improving coating material, which is prepared through the step of dissolving by adding 1 to 10 wt% of a crosslinking silicone resin containing petroleum hydrocarbon as a solvent. The method of claim 6, The method for producing the surface coating and durability improvement coating material of aluminum building material, characterized in that the dissolution while maintaining the water temperature at 30 ℃ or less during the dissolution.