KR100511455B1 - Manufacturing method of polymeric inorganic matter coating material for protecting the surface of structures - Google Patents

Abstract

        The present invention is applied to the surface of concrete, wood, glass and chemicals of concrete structures, WGS-PCC (WGS-Polymer Ceramics) is an inorganic elastic coating that can enhance the strength of the surface while protecting the structure or product from degradation and aging Coating method).

        The inorganic elastic coating material is a coating material produced by a hydration reaction between a modified synthetic polymer water-soluble polymer and a cement-based inorganic material, in particular, when the coating material is applied to the surface of the concrete structure neutralizes the acidic cement to produce environmental hormones that are harmful to the environment. It can be transformed into a natural-friendly concrete structure that does not discharge, and also applied to the underwater concrete structure can prevent external seawater from penetrating into the concrete structure, and consequently to prevent salt and deterioration of the concrete structure underwater.

     In the method of preparing the coating material, a water vapor, a dispersant, a starting material, and water are put into a stirrer and stirred while heating to 80 degrees Celsius, and in the second step, the compound prepared in the first step is prepared separately. After entering the tank and adding a plurality of monomers each having a function different from the submersible and dispersant, and then stirred again to add a starting material and water to prepare a blend, the blend prepared in the second step as a third step While cooling the mixture, add ammonia and water, and add additives, and add the additives. The liquid type WGS-PCC B made of a modified acrylic water-soluble polymer and ordinary cement, fly ash, hemihydrate gypsum, cellulose fiber and other admixtures WGS-PCC A in powder form prepared by blending was mixed with a mixture of water and a fixed weight ratio, It will cost.

Description

Manufacturing method of polymeric inorganic matter coating material for protecting the surface of structures

 The present invention is applied to the surface of concrete, wood, glass and chemicals of concrete structures WGS-which is a polymer inorganic coating material that can protect the structure or product from degradation and aging while preventing salt, neutralization and enhance the durability of the surface It relates to a manufacturing method of PCC (WGS-Polymer Ceramics Coating).

Conventionally, in order to prevent the concrete from corroding or deteriorating due to salt or pollutants, the structure, in particular, the concrete structure, is coated with epoxy, urethane, acrylic resin or asphalt coating to protect the surface of the structure. As a result, the weakening of durability has been prevented from progressing to the interior of the structure. However, such a conventional method has a long time due to the difference in thermal expansion coefficient and elastic modulus with concrete and the peeling off from the surface due to the decrease in adhesive strength. As the process progressed, cracking and lifting occurred due to the hardening of the coating material itself coated on the surface, which made it difficult to achieve the originally expected purpose. Conk Due to the difficulty of evaporation of moisture contained in the interior of the condensation, condensation, lifting and freezing occurred frequently, it could not act as a coating material.In addition, if the concrete structure is in water or there is moisture on the surface, the surface is completely dried. The construction problem has been raised because it has to be done, and the material used in the past is potentially harmful substances as oil, and solvents or thinners are used as diluents. Because it uses resins and heavy oils, it is non-environmentally friendly, and in particular, epoxy-based coatings contain environmental hormones bisphenol A and by-products that adversely affect the natural environment, thereby adversely affecting the environment.

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

 Thus, the present invention was made to solve the problems described above, by using a polymer-based inorganic coating material prepared by the hydration reaction of the modified acrylic-based water-soluble polymer and the cement-based inorganic, concrete, wood, steel It can be coated on the surface of all kinds of materials such as glass, chemicals, etc., and once coated on the surface of the structure, it protects the surface by strong adhesive force and prevents the penetration of external chemical substances or moisture into the structure. It is an object of the present invention to provide a method for producing a polymer-based inorganic coating material that is coated on the surface of the structure to have a durability and a constant elastic force to withstand external impact at the same time to protect the surface.

Method for producing a polymer-based inorganic coating material that can be applied to the surface of the structure according to the present invention for protecting the surface to achieve the above object, in the manufacturing method of the coating material coated on the surface to protect the surface of the structure, Modified acrylic water-soluble polymer, which is a functional monomer BA (Butyl acrylate): 330 to 390 (weight compounding ratio), MMA (Methyl methacrylate): 250 to 325 (weight compounding ratio), N-MAM (N-methylol acryl amide): 15 to WGS-PCC B prepared by mixing 25 (weight compounding ratio), MAA (Methacrylic acid): 8.5 to 10.2 (weight compounding ratio), GMA (Glycidyl methacrylate): 2.5 to 4.0 (weight compounding ratio), and cement-based inorganic powder Cement: 70 to 90 (weight compounding ratio), fly ash: 1 to 30 (weight compounding ratio), hemihydrate gypsum: 1 to 5 (weight compounding ratio), cellulose fiber: 1 to 3 (weight compounding ratio), other admixtures: 0.5 to 1.5 ( WGS-PCC A agent prepared by mixing the weight mixture ratio), the weight ratio 1: 0.2 ~ 0.25 (WGS-PCC A agent: WGS-PCC Formulation B) to be applied to the surface of the structure to prepare a polymer-based inorganic coating material to protect the surface, the WGS-PCC B agent as a first step distilled water, surfactant (Surfactant A: Sulfonate, Surfactant B: Quaternary Ammonium Salt dispersant (ZnO), initiator (Benzyl) and water were added to a stirrer and heated to 80 degrees Celsius to prepare a blend, and in the second step, the blend prepared in the first step was placed in a separate tank. After the addition of the monomer (BA, MMA, N-MAM, MAA, GMA), each having a function different from that of water vapor and the surfactant, and then stirred again to add the initiator and water to prepare a blend after the third As a step, it is characterized by being prepared by dropping an additive (Silica) at the same time while adding ammonia and water while cooling the blend prepared in the second step.

delete

delete

delete

delete

delete

delete

 Hereinafter, with reference to the accompanying drawings, the present invention will be described in detail.

 1 is a process diagram showing a process of manufacturing a liquid WGS-PCC B agent made of a modified acrylic water-soluble polymer constituting the polymer-based inorganic coating material of the present invention, distilled water (DI Water) and the dispersion as a first step (E.g., ZnO), Surfactant A (e.g. Sulfonate) and Surfactant B (e.g. Quaternary Ammonium Salt), Initiator (e.g. Benzyl) and water in a stirrer The mixture is prepared by stirring while heating to a degree, the compounding ratio of which is shown in Table 1 below.

  [Table 1] Types and compounding ratios of materials of the first step for producing a polymer inorganic coating material

Material Name Weight compounding ratio DI Water 300-500 Surfactant a 0.5-1.0 Surfactant b 0.5-1.0 Dispersant 0.5-1.0 Initiator / H ₂ O 2.50 / 10.5 In the second step, after putting the compound prepared in the first step into a separate tank, distilled water (DI Water), a plurality of monomers having different functions from the Surfactant A and Surfactant B, respectively, BA (Butyl acrylate), MMA ( Methyl methacrylate (N-MAM), N-methylol acryl amide (N-MAM), Methacrylic acid (MAA), Glycidyl methacrylate (GMA) were added, followed by agitation, followed by the addition of distilled water (DI water) and an initiator (Initiator). To prepare. The compounding ratio is shown in the following [Table 2]. [Table 2] Type and compounding ratio of the material of the second step for producing the polymer-based inorganic coating material Material Name Weight compounding ratio Remarks DI Water 150-250 Hardness, flexibility, water resistance, adhesion enhancement, hydration products and reaction promotion Surfactant a 5.0-10.0 Surfactant b 15.0-20.0 BA 330-390 MMA 250-325 N-NAM 15.0-25.0 MAA 8.5-10.2 GMA 2.5-4.0 DI Water 0.77-0.93 Initiator 1.5-3.5 Each monomer, BA (Butyl acrylate), improves flexibility or elasticity, MMA (Methyl methacrylate) enhances surface hardness or strength, and N-MAM (N-methylol acryl amide) combines the above monomers. GMA (Glycidyl methacrylate), which enhances the reaction with the hydration product, which enhances the adhesion to the hydration product, is formulated by adding each of these monomers to the coating material of the present invention. It has a property of the required material.

delete

delete

In addition, the molecular formula of each of the monomers is as follows.

BA (Butyl acrylate)... … … Formula (1)

MMA (Metyl methacrylate). … … Formula (2)

N-MAM (N-methylol acryl amide). … … Formula (3)

MAA (Methacrylic acid)... … … Formula (4)

GMA (Glycidyl methacrylate). … … Formula (5)

As a third step, ammonia (NH ₃ ) and water (H ₂ O) are added to the compound prepared in the second step to adjust the pH (PH), and the mixture is permeated and mixed with an additive (for example, Silica). Cooling to prepare the final WGS-PPC B in a liquid form consisting of a modified acrylic water-soluble polymer is finally completed. The compounding ratio in the third step is shown in Table 3 below.

delete

delete

 [Table 3] Type and Mixing Ratio of Materials of Third Step for Producing Polymeric Inorganic Coating Material

 In addition to the liquid WGS-PCC B agent, the blending ratio for the preparation of the powder WGS-PCC A is another material as shown in Table 4 below.

Table 4 Mixing ratio of WGS-PCC A agent in powder form for preparing a polymer inorganic coating material Material Name Weight ratio (%) Ordinary cement 70-90 Fly ash 1-30 Half gypsum 1-5 Cellulose fiber 1-5 Other Admixtures 0.5-1.5 WGS-PCC A in a liquid form consisting of a modified acrylic water-soluble polymer prepared according to Tables 1 to 3 and cemented inorganic WGS-PCC A in a powder form prepared by the blending ratio of Table 4, and mixed water Formulated by mixing is WGS-PCC which is a polymer-based inorganic coating material to be implemented in the present invention, the compounding ratio for its preparation is shown in the following [Table 5].

delete

delete

       Table 5 Mixing Ratios for the Preparation of Polymer-Based Inorganic Coatings

Figure 2 is a process diagram showing the steps of constructing a coating on the surface of the structure dried surface using the polymer-based inorganic coating material of the present invention, construction planning → construction range determination and arrangement work → concrete surface treatment → pore site putty work The coating is applied to the dry surface of the structure in the following order: application → surface reinforcement coating → polymer inorganic coating material application → curing → quality inspection.

Referring to the work process to be carried out by the construction sequence described above in detail.

(1) Construction plan

Understand the basic structure history such as the structure's use, form, period of use, and maintenance history, and identify conditions such as coating coverage and traffic required for other work.

      (2) Construction scope determination and arrangement work

          Indicate where the work will be done, identify the progress of cracks in the structure and ensure that the cracks are no longer in progress. In addition, the types of tools and equipment needed for the work are determined and they are cleaned.

       (3) concrete surface treatment

          Carry out surface cleanup work to remove deteriorated parts of the surface and clean up foreign substances on the surface.

          In addition, if necessary, the surface is cleaned with water, and the humidity remaining on the surface can be 10 to 30%.

       (4) Putty work on voids

          Put the void part putty to fill the part removed by the surface bending and deterioration so that the surface is not curved.

       (5) Application of surface hardening agent

          A surface strengthening agent containing WGS-Real, which is a modified acrylic polymer polymer, and mixed water in a weight ratio of 1: 0.8 is applied to the surface using a roller or a brush to sufficiently infiltrate the surface.

         The number of coating is three times and the amount of coating is about 0.1 L / m 2, and the coating direction is applied in the same direction as the previous coating direction.

         24 hours after the surface hardener is applied to the surface, the operation of the next process is performed.

        (6) Application of polymer type inorganic coating material (WGS-PCC)

           It mix | blends with reference to the said standard mix ratio of the said [Table 5]. At this time, the compounding amount is blended with the coating material in an amount capable of working for 3 to 4 hours.

          The blended coating material is coated on the surface on which the surface reinforcing material is applied using a mechanism such as a roller or a brush 2 to 3 times.

           When coating the coating material with a spray, the first coating is spray coated at a pressure of 7 to 10 bar, and the thickness is 0.7 to 1.0 mm, but the coating time is constructed according to the coating temperature according to the coating time. .

       [Table 6] Construction Time by Temperature of Polymeric Inorganic Coating Material

         After the first coating is completed, the coating is performed twice with reference to the construction time of [Table 6]. When the second coating is applied, the coating is performed in the same manner as the one coating operation at a pressure of 5 to 8 bar, but the thickness is 0.7 to 1.0 mm. To coat with a roller or brush, in the case of coating work with a roller or brush, be in a direction perpendicular to the coating direction once. The coating time according to the temperature of the second coating is shown in [Table 7].

       [Table 7] Construction time by temperature of polymer inorganic coating material

       (7) curing

          If there is any concern about rainfall within 24 hours after the coating is completed, it should be protected with a sheet.

          If rapid drying is expected due to high temperature or wind, it should be cured with sheet, etc., and if the temperature falls below 5 ℃, it will be kept warm.

          In summer, the coating surface should not exceed 30 ℃ and in winter, the surface should be above 5 ℃.

        (8) quality inspection

           Examine the quality of the coating by checking whether the coating is carried out under the above conditions and by reviewing the coating curing results.

         Figure 3 is a process diagram showing the step of constructing a coating on the surface of the structure using the polymer-based inorganic coating material of the present invention is wet or leaks, construction plan → leak site clearance → Uji (WGS) Waterproofing grouting system Application Repair → Concrete surface treatment → Application → Surface reinforcement → Polymer-based inorganic coating material → Curing → Quality inspection.

        Referring to the work process to be carried out by the construction sequence described above in detail.

(1) Construction plan

Understand the basic structure history such as the structure's use, form, period of use, and maintenance history, and identify conditions such as coating coverage and traffic required for other work.

      (2) Clean up leakage

         Mark the part where the work is to be performed, clean up and clean the surface by removing white matter, foreign substances, etc., and apply it to the above water leakage part among the front, filling, and waterproofing grouting methods. Choose a method.

      (3) Maintenance and repair of WGS waterproof grouting system

         The waterproofing method is selected using the waterproofing method selected from the above waterproofing methods to prevent leakage of the leaking part.

       (4) concrete surface treatment

          The surface of the leak-repaired and deteriorated parts and the surrounding surface is cleaned, and the surface cleanup work is performed to clean up foreign matters on the surface.

          In addition, if necessary, the surface is cleaned with water, and the humidity remaining on the surface can be 10 to 30%.

       (5) Application of surface hardening agent

          A surface strengthening agent containing WGS-Real, which is a modified acrylic polymer polymer, and mixed water in a weight ratio of 1: 0.8 is applied to the surface by using a roller, a brush, a spray, etc. to allow sufficient penetration.

         The number of coating is three times and the amount of coating is about 0.1 L / m 2, and the coating direction is applied in the same direction as the previous coating direction.

         24 hours after the surface hardener is applied to the surface, the operation of the next process is performed.

(6) Application of polymer type inorganic coating material (WGS-PCC)

         It mix | blends with reference to the said standard mix ratio of the said [Table 5]. At this time, the compounding amount is blended with the coating material in an amount capable of working for 3 to 4 hours.

         The blended coating material is coated on the surface on which the surface reinforcing material is applied using a mechanism such as a roller or a brush 2 to 3 times.

         When coating the coating material with a spray, the first coating is spray coated at a pressure of 7 to 10 bar, and the thickness is 0.7 to 1.0 mm, but the coating time is constructed according to the coating temperature according to the coating time. .

         After the first coating is completed, the coating is performed twice with reference to the construction time of [Table 6]. When the second coating is applied, the coating is performed in the same manner as the one coating operation at a pressure of 5 to 8 bar, but the thickness is 0.7 to 1.0 mm To coat with a roller or brush, in the case of coating work with a roller or brush, be in a direction perpendicular to the coating direction once. The coating time according to the temperature of the second coating is shown in [Table 7].

(7) curing

            If there is any concern about rainfall within 24 hours after the coating is completed, it should be protected with a sheet.

            If rapid drying is expected due to high temperature or wind, it should be cured with sheet, etc., and if the temperature falls below 5 ℃, it should be thermally cured.

           In summer, the coating surface should not exceed 30 ℃ and in winter, the surface should be above 5 ℃.

      (8) quality inspection

         Examine the quality of the coating by checking whether the coating is carried out under the above conditions and by reviewing the coating curing results.

         When the surface of the structure is coated by the method of FIG. 2 to FIG. 3, the same behavior as the occurrence of the crack when the structure is cracked, and the coloring is also possible, even when exposed to sunlight for a long time. It is not affected by the deterioration or deterioration of the strength will not adversely affect the structure.

        Figure 4 is a view showing the reaction mechanism of the polymer-based inorganic coating material of the present invention, by stabilizing the reaction of the product and the acrylic crab polymer produced by the hydration reaction of the cement-based inorganic powder to protect the structure when coated on the structure surface and breathable It improves the strength of the structure and prevents the salinity and harmful substances from penetrating into the structure, and extends the durability of the structure. Especially, it prevents the release of harmful substances in concrete structures. It is to play the role of.

        In detail, 75% of the hardening component, which is the calcium silicate hydrogate (CSH) generated by the hydration reaction of the cement-based powder and the electrolytic material having the negative electrode, is cured so that the anode is wrapped around the hardening material. 25% of the generated CSH material revolves around in an unreacted state, where a liquid acrylic polymer is introduced, and the positron is surrounded by chemical bonds with calcium hydroxide (Ca (OH) ₂ and Ca² + ions). As seen above, negative electrons surround the CSH, and 25% of the unreacted positrons revolve around them, creating air in the structure when they are coated on the surface of the structure. It is produced so that the properties of the coating material of the invention can be seen.

As described above, the method for producing a polymer-based inorganic coating material that can be applied to the surface of the structure according to the present invention to protect the surface is a polymer-based inorganic coating material is coated on the surface of various materials to protect the structure or material while breathing However, it prevents moisture from penetrating into the inside, and it is also resistant to ultraviolet rays, so it does not deteriorate even after long-term exposure to sunlight. Especially, in the case of concrete structures, it is an environmentally friendly material that prevents the release of harmful substances eluted from concrete.

        Figure 1 is a process showing a process for producing a liquid WGS-PCC B agent consisting of a modified acrylic water-soluble polymer constituting the inorganic elastic coating material of the present invention.

        Figure 2 is a process showing the step of constructing a coating on the surface of the dry structure using the polymer-based inorganic coating material of the present invention.

        Figure 3 is a process showing the step of constructing a coating on the surface of the surface of the structure using the polymer-based inorganic coating material of the present invention wet or leaks.

        4 is a view showing a reaction mechanism of the polymer-based inorganic coating material of the present invention.

Claims (12)

In the manufacturing method of the coating material coated on the surface to protect the surface of the structure, Modified acrylic water-soluble polymer, functional monomer BA (Butyl acrylate): 330-390 (weight compounding ratio), MMA (Methyl methacrylate): 250-325 weight compounding ratio, N-MAM (N-methylol acryl amide): 15-25 ( WGS-PCC B prepared by mixing a weight ratio), MAA (Methacrylic acid): 8.5 to 10.2 weight ratio), GMA (Glycidyl methacrylate): 2.5 to 4.0 (weight ratio) Cement-based inorganic powder: normal cement: 70 to 90 (weight compounding ratio), fly ash: 1 to 30 (weight compounding ratio), hemihydrate gypsum: 1 to 5 (weight compounding ratio), cellulose fiber: 1 to 3 (weight compounding ratio), other admixtures : WGS-PCC A agent prepared by mixing 0.5 to 1.5 (weight compounding ratio) in a weight ratio 1: 0.2 to 0.25 (WGS-PCC A agent: WGS-PCC B agent) is applied to the surface of the structure to protect the surface. To prepare a polymer-based inorganic coating material, The WGS-PCC B agent is a distilled water, a surfactant (Surfactant A: Sulfonate, Surfactant B: Quaternary Ammonium Salt) dispersant (ZnO), an initiator (Benzyl) and water into a stirrer and stirred while heating to 80 degrees Celsius as a first step In the second step, the compound prepared in the first step is put in a separate tank, and the monomers having different functions from water vapor and the surfactant (BA, MMA, N-MAM, MAA, After adding GMA), the mixture was prepared by adding the initiator and water with stirring again, and then adding ammonia and water while cooling the mixture prepared in the second step as a third step, and adding additives (Silica). Manufactured by dropping) The compounding ratio of each material to be added at each step is applied to the surface of the structure characterized by the characteristics as shown in the table below to protect the surface of the polymer-based inorganic coating material.       Material Name        Weight compounding ratio    Remarks       DI Water         300-500    Stage 1     Surfactant a         0.5-1.0     Surfactant b         0.5-1.0        Dispersant         0.5-1.0 Initiator / H ₂ O         2.50 / 10.5       DI Water         150-250    Tier 2     Surfactant a         5.0-10.0     Surfactant b         15.0-20.0         BA         330-390         MMA         250-325        N-MAM         15.0-25.0         MAA         8.5-10.2         GMA         2.5-4.0       DI Water         0.77-0.93       Initiator         1.5-3.5 NH ₃ / H ₂ O         5 / 8.5    Tier 3        additive         1.5-3.5 delete delete delete delete         The method of claim 1,      In the second step, the monomer is BA, MMA, N-MAM, MAA, GMA, MMA (Methyl methacrylate) is added to enhance the surface hardness or strength, the molecular formula is N-methylol acryl amide (N-MAM) is added to bind monomers and enhance strength, respectively. GMA (Glycidyl methacrylate) is added to promote adhesion, the molecular formula is Method for producing a polymer-based inorganic coating material that can be applied to the surface of the structure characterized by being protected. delete delete delete delete delete delete