JP2009154139A - Antifouling coating, steam cleaning method, and detergent - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an antifouling coating and a steam cleaning method including a treating method before an antifouling coating film of antifouling coating with an antifouling agent is formed on the glass surface and the coating surface of an automobile body and an oxygen detergent. <P>SOLUTION: The excellent antifouling coating film by the antifouling agent is formed by implementing the cleaning method of cleaning the surface of a base material on which the antifouling coating is to be applied using a steam cleaner with steam prepared by mixing an aqueous solution of the oxygen detergent and water in a steam tank without using a detergent comprising a surfactant, an abrasive agent, an acid, a base and a solvent nor water stream. The environmentally friendly pre-treatment cleaning method is applied in this way. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention is a method for cleaning a substrate surface as a pretreatment to form an antifouling film of an antifouling coating using an antifouling agent on a glass surface and an automobile body by using a steam cleaner, The present invention also relates to a cleaning method using an oxygen cleaning agent as a cleaning agent used in the treatment.

  Conventionally, when performing antifouling coating on glass surfaces and automobile bodies, in general, in order to form a film of antifouling agent on the surface of the substrate, surfactants, abrasives, acids, A common method is to use a cleaning agent composed of a base and a solvent, remove dirt such as oil and scales, and then rinse with running water.

  However, when removing the cleaning agent adhering to the substrate surface in the pretreatment cleaning stage, a method of wiping with a hand is usually used at places and places where running water cannot be used.

  Also, depending on the antifouling agent, an undercoat composition is required before forming the antifouling coating, and after the pretreatment cleaning, an undercoat layer is formed, and the antifouling agent is formed on the undercoat layer. However, the cleaning method is the same as described above.

  Up to now, examples of cleaning using movable small steam cleaners have been used for automobiles and engine rooms, and for removal and cleaning of oil and other components in oil-contaminated equipment such as ventilation fans in buildings such as houses and buildings. It is used.

  Also, it is often used as a bleaching agent in oxygen cleaners.

  JP-A-11-50006   Issuer Yutaka Ikeda "Car Car Wash & Shine Complete Guide" Ikeda Shoten Publishing July 20, 2007

However, the conventional cleaning method as described above has a problem.
(1) Glass coating in the building industry and building renovation industry and the automobile industry has an industry called body coating. The purpose is antifouling measures on glass surfaces, prevention of dirt on painted surfaces of automobile bodies, durability, and weather resistance. However, there is a problem that the work takes a long time in the pretreatment stage in which an antifouling film of the antifouling agent is formed on the surface of the base material.
(2) In order to form an antifouling film of the antifouling agent on the glass surface and the substrate surface of the automobile body, at least two predetermined types of cleaning agents are usually used in the pretreatment stage and the dirt is removed several times. However, there has been a problem that the cleaning agent and dirt on the surface of the substrate must be removed with running water for the number of times the cleaning agent has been used.
(3) Since the antifouling film of the antifouling agent is formed on the surface of the base material on the glass surface of the building or the like, the pretreatment cleaning operation can remove the cleaning agent with running water within a height of about 30 m. In higher-rise buildings and the like, it is necessary to use a method of wiping by hand. In that case, there is a problem that it is impossible to form an antifouling film of a good antifouling agent.
(4) In order to form the antifouling film of the antifouling agent in the building of about 30 m or less as shown in (3), the surface active agent, abrasive, acid, base and To remove any cleaning agent or dirt consisting of solvent, spread a curing sheet around the building, place guards on the surrounding roads, and take care not to allow water to splash on ordinary passersby and installations. There is also a problem that it is difficult to adopt because it requires a lot of work and is expensive and expensive.
(5) Whether it is glass coating or automobile body coating, there is also a big problem that cleaning is not possible unless there is an environment where water can be used and an environment where water can flow, as long as running water is required for pretreatment cleaning. is there.
(6) In the pretreatment cleaning, any cleaning agent composed of surfactant, abrasive, acid, base and solvent is washed away with running water, but there is also a problem that leads to environmental deterioration depending on the composition of the cleaning agent. is there.
(7) The same problem as described above also occurs in the coating after the pretreatment of the antifouling agent undercoat composition.

  Therefore, the present invention uses a steam cleaner to remove dirt on the substrate surface in order to form an antifouling film using an antifouling agent on the glass surface and the substrate surface for the purpose of antifouling the automobile body. It is to provide technology to remove.

  In order to achieve the above object, the present invention takes the following technical means.

  In order to form an antifouling film of the antifouling agent on the glass surface and the substrate surface of the automobile body, synergy with steam in which the aqueous solution in the water tank of the steam washer is mixed with an aqueous solution in which an oxygen cleaner is dissolved in water. Use pretreatment cleaning technology that is more effective and more powerful.

  In addition, towels are wound around the nozzle of the steam outlet of the steam washer, and impurities such as oil and dirt on the surface of the substrate lifted by the steam are wiped off with the rolled towels for cleaning. By repeating this operation, a better antifouling coating is formed after pretreatment of the substrate surface without using hand wiping and running water.

  As described above, the present invention forms an antifouling film of an antifouling agent at the time of glass antifouling coating or automobile body coating, so that no cleaning agent that leads to environmental destruction is used in the pretreatment stage. By performing steam cleaning using an aqueous solution, it is not necessary to wash away impurities such as dirt and oil by using inefficient hand wiping and a large amount of running water.

  Therefore, the substrate surface can be cleaned even at work places and places unsuitable for running water.

  In the cleaning of the present invention, by using a mixed water of an oxygen cleaning agent aqueous solution and water in the steam tank, the oxygen cleaning agent has the ability to remove oil and dirt, the bleaching capability, and the steam cleaning capability. The occlusion can improve the cleaning ability more effectively.

  Next, an embodiment of the present invention will be described.

  In the present invention, when forming the antifouling film of the antifouling agent, an undercoat layer of an undercoat composition necessary for forming the antifouling film must be formed depending on the composition or state of the substrate surface. . In the same way as the antifouling film is formed, it is possible to prevent environmental deterioration without using detergents such as detergents, acids, bases, and solvents that affect the environment, such as hand wiping and running water cleaning, as well as cleaning. To do.

  In order to form a good antifouling film, it is desirable to remove compound abrasives and the like together with oil and dirt on the substrate surface using an oxygen cleaner and a steam cleaner.

  The oxygen cleaner in the tank of the steam washer is mixed with 5% to 15% with water depending on the dirt. Since this oxygen cleaning agent is a cleaning agent mainly composed of sodium percarbonate, it has no odor and does not adversely affect the environment. Since active oxygen is decomposed by organic substances in waste water and loses its activity, there is no effect on activated sludge and its acute toxicity is low. It also has a detergency against organic and oil stains, has a strong bactericidal effect, and has bleaching performance. Thus, the oxygen cleaner is an excellent cleaner that does not cause environmental pollution.

  In addition, since oxygen dissolved in water penetrates into and peels off the dirt gap together with the steam, the oxygen cleaning agent does not add to the surface of the base material, so that it is not damaged or damaged. The cleaning ability is comparable to that of a normal detergent containing an active agent, and the cleaning purpose can be achieved. Since it dissolves well in water, it can be used for colored patterns and does not affect the surface of the base material of the automobile body.

  At least in working places and places where running water cannot be used, pre-treatment work can be performed in an environmentally friendly and safe manner and work efficiency can be dramatically improved.

  Conventionally, in the pre-treatment stage for forming an antifouling film of an antifouling agent, it must be in an environment where water can flow on the glass surface of the building and the substrate surface of the automobile body, such as a building with a height of about 30 m or more. It was a condition.

  In addition, since it operates steam cleaners and other power tools, it can be accommodated by using a small generator for movement without electrical equipment. Pretreatment cleaning for film formation can be performed.

  As Example 1, one worker boarded a gondola installed on the roof of a 10-story building and started work.

  On the second floor of the building, the left glass window with a height of 900mm x width of 3600mm facing southwest, the first mobile small steam washer, Speed Steam Pro made by Zao Sangyo Co., Ltd., is mounted on the gondola, and the oxygen cleaner in the water tank The aqueous solution was removed from the glass surface with steam mixed with water, an ejection pressure of 0.47 Mpa, an ejection temperature of 120 ° C., and towels wound around the tip of the nozzle.

  After that, the glass surface was polished with a glow buff of an electric polisher using a compound made by UNELKO, USA as a polishing agent, and a sunny scrub. Since there was a scaly coating that did not fall off with the polishing agent on one part, Million Geoservice Co., Ltd. Was mounted, and the scaly film was polished to finish it in a state suitable for forming an antifouling film with an antifouling agent.

  After the abrasive that has adhered to the glass surface is again wiped off with steam without using running water, a mixture of 95% methyl alcohol and 5% ethanol as a degreasing agent is sprayed onto the glass surface with a hand spray to remove residual oil and fat. Degreased and wiped off with dry waste. With this operation, the pretreatment for forming the antifouling film of the antifouling agent was completed.

  Next, the photocatalyst coating material of International Publication No. WO2005 / 026276 is used as an antifouling agent on the glass surface that has been subjected to the above pre-cleaning, and a pressure reducing valve is used with a cup gun having a nozzle diameter of 0.8 mm, and the pressure is 0.2 Mpa or less. The gun was separated from the surface by 20 cm to 25 cm and applied once in the vertical direction and once in the horizontal direction to form a photocatalytic antifouling film.

  Then, as a comparison, in the same building, two workers and two assistant workers got on the gondola, and pre-cleaning was performed on the right glass window with a height of 900mm x width of 3600mm in the southwest direction. It was done in.

  First, a pre-cleaning operation was started after applying a curing sheet so that running water was not applied to articles placed downstairs and arranging a guard to guide passers-by.

  First, clean the glass surface with a hose attached to the downstairs water supply system. Next, a weakly acidic cleaning agent was sprayed onto the glass surface with a hand spray, the surface was polished with a wet sponge, the dirt was lifted off, and then the cleaning agent was again rinsed with running water. At that time, emphasis was placed on cooperation with security guards, and the cleaning operation had to be carried out carefully so as not to disturb the surroundings.

  Next, wipe the water to some extent with a dry cloth, and after polishing and scaly coating similar to the above with the above-mentioned abrasive, wash again with water in cooperation with the guards and auxiliary workers After wiping off moisture with a dry waste, the glass surface was naturally dried and degreased with a degreasing agent to complete the pretreatment process.

  In the subsequent work steps, the same photocatalyst coating material as described above was applied to the glass surface as an antifouling agent to form a photocatalytic antifouling coating.

  The comparison of the anti-stain glass coating by the steam cleaning method and the running water cleaning method was carried out on the 10th day after the construction. The condition was also good. Thereby, it was judged that the formation state of the photocatalytic antifouling film of the antifouling agent was good, and both methods showed no difference in the results.

  However, the working time was more than double the difference between the steam cleaning method 1 hour 30 minutes and the running water cleaning method 3 hours 15 minutes. Also, the running water cleaning method must be interrupted frequently by the instructions of the guards during the work, and it must be washed 3 times with running water. The difference between this method is that the running water cleaning method itself is the steam washing method. It is obviously expensive compared to the cost of Moreover, it is clear that the larger the area of the coated substrate and the higher the building, the greater the difference in cost.

As Example 2, the glass surface specially processed on the glass surface of the 5 m ² ground floor show window was pretreated with the antifouling coating and steam cleaning methods described above, and the undercoat layer of the undercoat composition was formed. After the formation, an antifouling film of a photocatalyst film material was formed as an antifouling agent in the same manner as described above. As a result, an antifouling effect similar to that of a glass surface without an undercoat layer could be obtained.

  As a third example, in the parking lot of a residential exhibition hall, the body color of the 2002 Toyota Crown car was subjected to antifouling automobile body coating.

  First, the body is divided into two vertically, a curing sheet is applied to the left half, and the exposed right half is treated with dust and dirt on the body coating surface in the same manner as in Example 1 with the steam washer described in Example 1. Steam cleaning was performed to remove the dirt.

  Next, on the right half, Sumitomo Slim's automotive abrasive compound, 2L5985, is used to polish the painted body surface with an electric polisher glow buff. In order to avoid this, the polishing work was performed by masking the body molding and rubber packing.

  After the polishing operation, the abrasive and impurities on the body painted surface were cleaned and removed by the steam cleaning method shown in Construction Example 1.

  In order to make a comparison between the conventional running water cleaning method and the steam washing method of the present invention, in order to use the running water washing method on the left half, the curing sheet applied to the left half is removed, and the pretreatment is performed by the steam washing method. A fresh sheet was carefully applied to the right half to prevent running water from flowing into the cleaned part.

  In order to use the running water cleaning method, first of all, to use running water, draw water with a hose from the water equipment in the residential exhibition hall in front of the work site, and then remove the dirt with a sponge for car wash while flushing the body with water. Spray a general weakly acidic cleaning agent on the painted surface of the body with a hand spray, polish the surface with a car wash sponge, lift the dirt, rinse the cleaning agent again with running water, and wipe the moisture with artificial leather leather. I took it.

  In the next step, the entire painted surface of the body is polished and polished with the abrasive and polisher described above, then rinsed with running water again, wiped with artificial leather leather for automobiles and allowed to dry naturally. It was.

  Next, the curing sheet applied to the right half was removed, and using the degreasing agent used in Example 1, the painted surface of the entire body was sprayed with a hand spray to degrease, and residual oil and fat were removed with a dry waste. With this operation, the pretreatment for forming the antifouling film of the antifouling agent was completed.

Using the photocatalyst coating material listed in Example 1 as an antifouling agent, a low-pressure hot-air coating device SG-91 manufactured by Chiron Germany was used on the body coating surface that had been pretreated and washed, Photocatalyst is applied by spraying 3 times, 1 vertical, 1 horizontal, and 1 diagonally, with the gun open from the coated surface at an application amount of 10 g / m ² , opening the adjustment screw 1/8 rotation open, 10 g / m ² An antifouling film was formed.

  The comparison of the anti-stain body coating by the steam cleaning method and the running water cleaning method was conducted on the day after the raining on the 14th day after the construction, and the state of the body soiled by rain was examined. Dirt adhered to the left and right body surfaces with water-impregnated artificial leather for automobiles was easily wiped off.

  Next, when the bonnet was sprayed with a large amount of water by hand spray and the hydrophilic state was examined, it was observed that the water spread uniformly. As a result, both the left and right sides were judged to be good in the state of formation of the photocatalytic antifouling coating of the antifouling agent.

  As a result of visual observation of the white coating color of the body, the right half of the body pretreated with the oxygen cleaning agent by the steam cleaning method was clearly bright white due to the effect of the bleaching action.

  Next, the cleaning work time for the left and right sides of the body divided by the cleaning method was divided into two or more times, 50 minutes for the steam cleaning method and 2 hours for the running water cleaning method. In addition, the running water cleaning method must be washed three times, including the time for wiping off dirt, moisture, etc. This difference clearly increases the cost of the running water cleaning method itself, and the antifouling body coating for one unit. When it comes to construction, if the construction completion time is about 1 hour 30 minutes in the steam cleaning method and about 3 hours 30 minutes to 4 hours in the running water cleaning method, it is clear that there will be a large difference in cost.

  As Example 4, on the same day as Example 3, the owner of a 2003 Toyota Mark II body color car body divided the body fully painted with a special paint composition into 3 parts vertically. Then, a curing sheet was applied to the left third, and the exposed one third of the right third was subjected to pretreatment washing in order to apply an antifouling coating by running water washing method.

  Next, the left two-third curing sheet was removed, the right third was applied with a curing sheet, and the left two-third body surface was pretreated by the steam cleaning method.

  Next, in order to form an undercoat layer of the undercoat composition in the middle third of the body, a curing sheet was applied to the left third, and spray coating was applied under the same conditions as in Example 3.

  Next, the right and left curing sheets were removed, and an antifouling film of a photocatalyst film material as an antifouling agent was formed on the entire body. As a result, an antifouling film is not formed on the composition of the left and right bodies of the body having no undercoat layer except for the middle part of the body, and the antifouling of the photocatalyst coating material that is an antifouling agent is formed on the painted surface of the middle part of the body A film was formed. The antifouling effect was confirmed at a later date, but a good antifouling film of the photocatalyst film material was formed.

  In addition, as a result of visual observation of the amber color, which is the paint color of the body, the body pre-treated with an oxygen cleaning agent by the steam cleaning method was clearly bright due to the effect of the bleaching action.

  Since the antifouling coating, the steam cleaning method and the cleaning agent of the present invention form an antifouling film of the antifouling agent on the glass surface and the automobile body coating surface, the work efficiency is improved and the operation cost is reduced in the pretreatment stage. Realized low price.

  In addition, a small amount of water required for steam in the steam cleaning machine and oxygen cleaning without using cleaning agents that have an adverse effect on the environment consisting of surfactants, abrasives, acids, bases and solvents, and without washing with running water By using chemicals, environmentally friendly pretreatment cleaning can be performed without destroying the environment.

  In particular, antifouling glass coating can be reused as antifouling glass without replacing even old glass of high-rise buildings, and will play a major role in the world. Therefore, the present invention is also valuable as an environmental purification system, and its industrial utility value is very high.

Claims (3)

  Antifouling, characterized by the use of a steam washer when pre-cleaning the surface of the substrate to form an antifouling film for the purpose of preventing contamination of glass surfaces and automobile bodies. Coating and steam cleaning methods.   Depending on the state of the substrate surface, an undercoat composition is required, and an antifouling film of an antifouling agent must be further formed on the formed undercoat layer. 2. The antifouling coating and steam cleaning method according to claim 1, wherein the substrate surface in that case is cleaned.   The antifouling coating and steam cleaning method according to claim 1, wherein an oxygen cleaner is used in the steam cleaner.