Elastic differential thermal composite coating waterproof agent and building roof waterproof process using same

Abstract

The present invention relates to an elastic differential thermal composite coating film water-proofing agent and a building roof water-proofing process using the same, and more specifically, in a water-proofing construction process for a crack portion of a building roof such as an apartment or a building, the elastic differential thermal composite coating film water-proofing agent and the building roof water-proofing process using the water-proofing agent, according to the present invention, with the economical surface treatment of grouting adhesion waterproofing after grouting dehumidification, the epoch-making waste emission reduction effect is achieved, and the waterproof effect of the building roof can be substantially improved by using the self-developed elastic composite coating waterproofing agent, such that the waterproof management cost of the building can be reduced for a long time.

Description

Technical Field

[0001] The present invention relates to an elastic differential thermal composite coating waterproof agent and a building roof waterproofing process using the same. More specifically, in the waterproofing construction process for the cracked parts of the roof of buildings such as apartments or buildings, without overall demolition of the aged waterproof coating part on the roof of the building, through grouting dehumidification and then grouting bonding waterproofing for economic surface treatment, an epoch-making waste reduction effect is achieved. At the same time, the construction method using the independently developed elastic composite coating waterproof agent can epoch-makingly improve the durability of the waterproof facilities on the building roof and the long-term management cost. Background Art

[0002] The concrete layer of buildings such as apartments or buildings will repeatedly shrink and expand according to the atmospheric temperature. Therefore, if the outer walls of these roofs are left exposed, the possibility of cracks and the like occurring is very high, and thus there will be problems of water leakage.

[0003] In particular, the roofs of buildings are directly exposed to external environments such as rain and sunlight, and excellent waterproof functions are required.

[0004] Conventional waterproof construction has adopted waterproof methods such as asphalt waterproofing, cement liquid waterproofing, and synthetic polymer resin waterproofing according to the waterproof part, the material and use of the existing concrete part, etc.

[0005] Among them, the waterproof method using synthetic polymer resin generally includes a pretreatment stage of removing and smoothing surface contaminants of the structure, a stage of spraying a primer on the pretreated surface, and a stage of spraying a waterproof coating on the primer.

[0006] Most traditional waterproof coatings are used as compositions diluted with organic solvents. Due to the use of oily solvents, environmental problems have become a hot topic, and recently water-based waterproof coatings have also been used.

[0007] Previous waterproof coatings mostly used emulsion resins and included surfactants, and there were serious problems in terms of water resistance and adhesion.

[0008] To make up for this defect, although some waterproof agents have compositions that do not include surfactants, they are poor in terms of water resistance, wear resistance, and method stability, and the waterproof durability period is not long, and waterproof projects need to be carried out frequently.

[0009] In addition, the existing waterproof coating waterproof construction method is prone to fire and is not a method to prevent casualties in case of fire.

[0010] Therefore, in waterproofing projects such as bamboo cotton and roofs of apartments or buildings, it is necessary to solve and improve these side effects and problems. In particular, by economically performing surface treatment without overall demolition, the waste reduction effect and the waterproof durability life can be significantly extended. At the same time, there is a great need to develop a waterproof construction method that can take countermeasures against fires.

[0011] Prior art documents

[0012] Patent documents

[0013] Patent Document 1: Korean Registered Patent No. 10-1730611

[0014] Patent Document 2: Korean Registered Patent No. 10-1000068

[0015] Patent Document 3: Korean Registered Patent No. 10-1907917

[0016] Patent Document 4: Korean Published Patent No. 10-2006-0079447 Summary of the invention

[0017] Problems to be solved by the invention

[0018] The present invention was developed in consideration of the above-mentioned conventional technologies. In the waterproof construction process for the cracked parts of the roofs of buildings such as apartments or buildings, through economic surface treatment by injecting slurry for dehumidification and then injecting and bonding waterproofing without overall demolition of the old waterproof coating part, an epoch-making waste reduction effect has been achieved. At the same time, the construction method using the self-developed elastic composite coating waterproofing agent can significantly improve the durability and reduce the waterproof management cost of the building in the long run.

[0019] Means for solving the problems

[0020] To achieve the above object, the present invention includes:

[0021] (1) A stage of dehumidifying the exposed crack part in terms of the repair object of the building roof;

[0022] (2) A stage of injecting a polyurethane grouting repair agent into the dehumidified crack part and performing grouting repair;

[0023] (3) A stage of applying the next coating using an acrylic elastic coating waterproof paint on the surface of the organized structure; and

[0024] (4) A stage of performing surface coating on the coated surface,

[0025] The polyurethane injection water retention agent is a two-component polyurethane injection water retention agent composed of a main agent of a polyurethane prepolymer obtained by reacting an isocyanate and a polyol and a curing agent containing a polyamine. Its characteristic is the use of a polyurethane injection water retention agent containing calcium hydroxide nano-components and fluorinated graphite fibers.

[0026] The acrylic elastic film waterproof coating includes 100 parts by weight of a liquid component composed of acrylic modified latex, zinc powder, vinyltrimethoxysilane, polyvinyl butyral resin, wood carbonization capture liquid, metal vanadate, phenyl bromide, alcohol solvent, defoaming agent, tackifier, including water, and 10 to 100 parts by weight of an inorganic filler including cement powder and clay. Its characteristic is the use of an elastic film waterproof coating.

[0027] In one example of the present invention, the fluorinated graphene fiber for the polyurethane injection water retention agent is characterized by graphene oxide fibers with a fluorinated surface.

[0028] In addition, in one example of the present invention, the acrylic elastic film waterproof coating is characterized in that for 100 parts by weight of the acrylic modified latex, it further includes 0.1 to 1.0 parts by weight of lithium carbonate.

[0029] In addition, in one example of the present invention, the acrylic elastic film waterproof coating is characterized in that an impact reinforcing agent composed of a reactive olefin resin is increased by 0.1 to 2.0 parts by weight compared with 100 parts by weight of the acrylic modified latex resin.

[0030] In addition, in one embodiment of the present invention, after the stage (4), a stage of applying an external coating layer by using a differential thermal polyurethane coating containing differential thermal powder on the painted surface; characterized by including more.

[0031] At this time, the differential thermal polyurethane coating is characterized by being composed of silane, paraffin, benzoate, reaction promoter, dispersant, calcium carbonate and pigment.

[0032] Advantages of the Invention

[0033] The characteristics and advantages of the building roof waterproofing process according to the present invention are as follows:

[0034] First, in the waterproof construction of the corrugated cotton roof of buildings such as apartments and buildings, by dehumidifying the concrete crack part and then pouring and repairing, the service life of the structure can be increased, thereby achieving the effect of reducing the structure maintenance cost.

[0035] In addition, applying a polyurethane injection repair agent containing calcium hydroxide nano-components and fluorinated graphite synthetic fibers to the dehumidified part can enhance the adhesion to the swollen part, thereby reducing the amount of waste generated.

[0036] In addition, by applying an acrylic elastic film waterproof coating, the physical properties of the film can be improved, the service life can be increased, and the waterproof effect can be exerted for a long time. Frequent maintenance construction is not required, and the maintenance cost can be reduced. Detailed implementation mode

[0037] The present invention will be described in more detail below.

[0038] As described above, the building roof waterproofing process according to the present invention includes the following stages. That is to say, it includes:

[0039] (1) In the aspect of the object to be repaired on the building roof, the stage of dehumidifying the exposed crack part;

[0040] (2) The stage of injecting a polyurethane grouting repair agent into the dehumidified crack part of the water and implementing grouting repair;

[0041] (3) The stage of applying the next coating with an acrylic elastic film waterproof coating on the surface of the sorted structure; and

[0042] (4) The stage of surface coating on the coated surface.

[0043] The following will be described in detail for each stage.

[0044] 1. Dehumidification treatment stage of crack part (pretreatment stage)

[0045] If the waterproof surface of the roof slab of a building such as an apartment or a villa deteriorates or peels off, the waterproof function of the structure will decline, and the internal concrete will be exposed, thus shortening the life of the building.

[0046] Therefore, it is necessary to carry out waterproof treatment, and first, the surface of the object should be sorted out.

[0047] That is to say, in the aspect of the object to be repaired of the structure, by visually observing the swollen part and the part with reduced adhesion, the first cleaning is carried out using a scraper and a grinding wheel, etc.

[0048] Then, use an ultrasonic detector to check the part with reduced adhesion that is invisible to the naked eye, and mark the part to be repaired with a pen or the like.

[0049] After the surface finishing and marking of the repair part are completed, use a dehumidification device to completely dehumidify the exposed crack part of the structure.

[0050] 2. Injection of polyurethane injection water retention agent

[0051] Next, use a casting repair agent to repair the crack part of the structure.

[0052] In the present invention, the injected water retention agent can be a polyurethane injected water retention agent.

[0053] Specifically, the polyurethane injected water retention agent can be a two-component polyurethane injected water retention agent composed of a main agent and a curing agent containing polyamine, including a polyurethane prepolymer obtained by the reaction of isocyanate and polyol.

[0054] The polyurethane injected water retention agent contains calcium hydroxide nano-components and fluorinated graphene fibers, and can be a two-component polyurethane injected water retention agent composed of a main agent and a curing agent containing polyamine, including a polyurethane prepolymer obtained by the reaction of isocyanate and polyol.

[0055] In the present invention, the calcium hydroxide nano-component is nano-sized calcium hydroxide powder, which has the function of imparting heat resistance or flame retardancy and improving fire resistance performance.

[0056] According to the present invention, the polyurethane injected water retention agent containing the potassium hydroxide nano-component has good flame retardancy and fire resistance performance, and has the effects of enhancing adhesion, increasing water resistance and fire resistance.

[0057] In the present invention, the potassium hydroxide nano-component can be added to the entire casting water retention agent in an amount of 0.1 to 2.0 parts by weight, and more preferably 0.7 to 1.5 parts by weight. If it is included within the said range, the functions of enhancing bonding strength, earthquake-resistant flame retardancy performance and earthquake-resistant performance can be effectively exerted.

[0058] Next, the fluorinated graphene fiber is a graphene oxide fiber with its surface fluorinated, which has the function of improving the waterproofness, fire resistance and heat resistance of the polyurethane casting repair agent.

[0059] Specifically, the graphene oxide fiber surface-modified by fluorine can induce a covalent bond between graphene oxide and polyurethane, enabling graphene to be evenly dispersed within the casting water retention agent, and exerting excellent waterproof, heat-resistant and fire-resistant characteristics.

[0060] The graphene oxide may be monolayer graphene oxide or graphene oxide stacked in several to dozens of layers, and this graphene oxide can be prepared by a process of exfoliating graphite using strong acids and oxidants. Compared with graphene or reduced graphene oxide, the graphene oxide can reduce the manufacturing cost. During the exfoliation process, oxygen functional groups such as hydroxyl groups are formed on the graphene oxide, facilitating subsequent surface modification with fluorinated substances, and having the advantage of being evenly dispersed within the injected water retention agent.

[0061] The fluorine surface-modified graphene oxide can be added to the total weight of the injected water retention agent in an amount of 0.05 to 3.0 parts by weight, and more preferably 0.1 to 2.0 parts by weight. If it is included within the said range, the waterproof and heat-resistant performance can be effectively exerted.

[0062] According to the present invention, ceramic pigments can be added to the polyurethane injection repair agent to prevent internal corrosion caused by the intrusion of acidic corrosion particles.

[0063] In the present invention, the ceramic pigment can be made by mixing 5-40% by weight of mica with a particle size of 1-100 microns, 10-50% by weight of stone powder, 5-50% by weight of emulsion, 10-70% by weight of water, and 1-10% by weight of pigment, and it can be used within the range of 0.1-5 parts by weight of the whole casting water retention agent.

[0064] In the present invention, the mica can be used in the form of flakes or powders. If mica with the said particle size is used, the adhesion to the conductor can be improved.

[0065] In addition, in the present invention, the commonly used stone powder can be used as the stone powder, or natural stone or artificial stone can be crushed and used. The stone powder can have the same particle size as the mica, which helps to improve the adhesion to the conductor.

[0066] In the present invention, ammonia or amine can be used as the emulsion, or low-toxic emulsified paint, water-soluble paint, etc. can also be used.

[0067] In addition, in addition to mixing pigments as a method of imparting color, the surface of the mica can also be coated with pigments in advance. Specifically, inorganic pigments, organic pigments and other pigments can be mixed in the mica, and after kneading, the surface of the mica is coated with pigments, and the mica with the coated pigments is fired or hardened, and color is imparted through a cooling box.

[0068] Through this dehumidification treatment and casting agent repair, the defective parts inside the existing waterproof surface of the structure can be repaired, which can prevent defects from occurring inside after waterproof construction with waterproof coating in the future from the source.

[0069] 3. Surface river channel coating using acrylic elastic film waterproof coating

[0070] Next, on the surface of the sorted structure, the next coating is carried out using acrylic elastic film waterproof coating, which can be carried out by brush coating or spray coating.

[0071] The elastic film waterproof coating used in this stage has the characteristics of an inorganic elastic film and has viscosity, and is used to improve the water resistance and durability of the structure surface.

[0072] The elastic film waterproof coating used in the present invention can be an elastic film waterproof coating, which is characterized by including acrylic modified latex, zinc powder, vinyl methoxysilane, polyolefin resin, wood carbonization capture liquid, metal vanadate, benzene bromide, alcohol solvent, defoaming agent, tackifier, 100 parts by weight of liquid phase components including water, and 10 to 100 parts of inorganic fillers including cement powder and clay.

[0073] More specifically, it includes 10 - 40 parts by weight of acrylic modified latex, 10 - 25 parts by weight of zinc powder, 0.1 - 2.5 parts by weight of vinyl methoxysilane, 1.0 - 5.0 parts by weight of polyvinyl butyric acid resin, 0.5 - 5.0 parts by weight of wood carbonization capture liquid, 0.1 - 1.0 parts by weight of metal vanadate, 0.1 - 3.3 parts by weight of benzene bromide, 20 - 50 parts by weight of alcohol solvent, 0.1 - 1.0 parts by weight of defoaming agent, 0.1 - 1.0 parts by weight of tackifier, 1.0 - 1.0 parts by weight of tackifier, 10 - 3.3 parts by weight of cement, containing 10 - 40 parts by weight, parts by weight of cement, parts by weight of cement, containing 10 - 40 parts by weight, containing 10 - 40 weight components and 10 - 40 weight components of inorganic substances. An elastic film waterproof coating characterized by can be used.

[0074] In the present invention, the acrylic modified latex is a modified latex resin with double carbon bonds obtained through the polymerization reaction of acrylic acid and methacrylate, and the weight average molecular weight can be 10,000 to 200,000.

[0075] In the present invention, the acrylic modified latex can provide waterproof performance, increase the compressive strength and torsional strength of the coating layer, prevent internal cracks caused by cement shrinkage, provide an adhesive function during the drying and curing process, and can also achieve functions of improving durability, heat resistance, chemical resistance, abrasion resistance, ultraviolet resistance, and corrosion resistance.

[0076] In the present invention, the acrylic modified latex is preferably included in the elastic film waterproof coating in the range of 10 - 40% by weight.

[0077] Next, in the present invention, the zinc powder plays a role in preventing contact with air and metal surfaces and improving the anti - corrosion property of metal components inside concrete. The present invention recommends that the zinc powder should be included in the elastic film waterproof coating in the range of 10 - 25 parts by weight.

[0078] In the present invention, the vinyl methoxysilane has the function of improving surface durability and waterproofness and enhancing durability. The present invention recommends that the vinyl methoxysilane should be included in the elastic film waterproof coating in the range of 0.1 to 2.5 parts by weight.

[0079] In the present invention, the polystyrene butyral resin plays a role in improving the stability of the waterproof coating film. In the present invention, the polystyrene butyral resin should be included in the elastic film waterproof coating within the range of 1.0 to 5.0% by weight.

[0080] In the present invention, the wood carbonization capture liquid is a liquid obtained by carbonizing oak wood and capturing and cooling its flue gas. It plays a role in alleviating the peculiar odor of the waterproof coating, while improving the antibacterial property of the waterproof coating, preventing the inhabitation of microorganisms, and thus playing a role in increasing the mildew resistance. The present invention recommends that the wood carbonization capture liquid should be included in the elastic film waterproof coating within the range of 0.5 to 5.0% by weight.

[0081] In the present invention, the metal vanadate forms a complex with metal components such as iron, copper, and manganese, playing a role in improving the physical strength of the waterproof agent. In the present invention, the metal vanadate should be included in the elastic film waterproof coating within the range of 0.1 to 1.0 parts by weight.

[0082] In the present invention, when the phenyl bromide forms the waterproof coating film layer, it plays a role in improving the adhesion strength of the coating film layer and inhibiting peeling, and also plays the role of a flame retardant, improving the resistance to fire. In the present invention, the phenyl bromide should be included in the elastic film waterproof coating within the range of 0.1 to 3.3 parts by weight.

[0083] In the present invention, the solvent of the elastic film waterproof coating can use an alcohol solvent, and its content should be preferably included in the elastic film waterproof coating within the range of 20 to 50% by weight.

[0084] In the present invention, the elastic film waterproof coating may include 0.1 to 1.0 parts by weight of a wrapping agent, 0.1 to 1.0 parts by weight of a tackifier, and 10 to 40 parts by weight of water.

[0085] In the present invention, the defoamer is used to inhibit bubbles and form a uniform coating film, and a non-ionic or silicone-based defoamer can be used.

[0086] In the present invention, the liquid component can be used as other additives, and a corrosion inhibitor, a dispersant, a wetting agent, and an extender pigment are respectively added within the range of 0.1 to 2.0% by weight.

[0087] In the present invention, the liquid component is mixed with an inorganic filler to form an elastic film waterproof coating.

[0088] The inorganic filler is composed of cement powder and clay, and specifically may include 8 to 50 parts by weight of cement powder and 2 to 50 parts by weight of clay. Compared with the liquid component, 10 to 100 parts by weight of inorganic filler can be included to form an elastic film waterproof coating.

[0089] In the present invention, the cement powder can be used in combination with one or more of ordinary or functional cements such as Portland cement, aluminate cement, magnesia cement, and colloidal cement. In the present invention, the cement powder serves to enhance the curing film strength of the coating film and form a dense coating film.

[0090] In addition, the clay also serves to reinforce the coating film structure, enhance durability, lighten the coating film load, and increase the thickness of the dry coating film.

[0091] In addition, among the inorganic fillers according to the present invention, in order to improve the crack resistance performance of the waterproof coating, fibers can be further included in the range of 1 to 10% by weight. At this time, in addition to high-strength fibers such as glass fiber, carbon fiber, and aramid fiber, environmentally friendly fibers such as cellulose fiber and felt fiber can also be used. In order to improve the dispersion stability, milling with a length below a certain length (preferably 0.001 to 0.1 mm) can be used.

[0092] In the present invention, lithium carbonate can be added to the acrylic elastic coating waterproof paint. In the present invention, lithium carbonate serves to enhance the water resistance of the coating film. It is recommended that in the present invention, for 100 parts by weight of the acrylic modified latex, it should be included in the range of 0.1 to 1.0 part by weight.

[0093] In addition, in the present invention, the acrylic elastic coating waterproof paint may further include an impact reinforcing agent composed of a reactive olefin resin.

[0094] The impact reinforcing agent composed of the reactive olefin resin serves to prevent the coating film from cracking when an external impact is applied to the coating film. In the present invention, the impact reinforcing agent can be used alone or in combination of two or more selected from ethylene-propylene rubber, isoprene rubber, ethylene-heptane rubber, ethylene-propylene-diene terpolymer, etc. In the present invention, the impact reinforcing agent composed of the reactive olefin resin should be included in the range of 0.1 to 2.0 parts by weight based on 100 parts by weight of the acrylic modified latex resin.

[0095] Using the formed acrylic elastic coating waterproof paint, on the surface of the roof structure including the river channel, it can promote the chemical curing reaction with the paint coating and improve the adhesion between the coatings.

[0096] In the present invention, the subcontracted paint obtained from the above components can densely fill and expand the pores on the surface of the structure, strengthen the adhesion with the subsequent sprayed cutoff paint, and have a good masterbatch protection function, thereby improving its physical properties such as heat resistance, water resistance, and durability.

[0097] 4. Capping seal

[0098] Spray a cutoff coating on the surface of the river channel.

[0099] In the present invention, the cutoff coating can use a post - film - type solvent - free epoxy resin.

[0100] In the present invention, the polishing coating can include more metal nanoparticles.

[0101] The metal nanoparticles have antibacterial, bactericidal, air - purifying, and deodorizing functions, and at the same time play the role of dense micropores. In the present invention, the types of the metal nanoparticles can use silver nanoparticles, gold nanoparticles, platinum nanoparticles, palladium nanoparticles, copper nanoparticles, etc., or can be used as a combination of them. The size of the metal nanoparticles used in the present invention can use an average diameter of the particles of 1 to 100 nanometers.

[0102] In addition, in the present invention, the cutoff coating can also include a waterproofing agent and an anti - corrosion agent.

[0103] The waterproofing agent can use, for example, a silane - based or silane - type waterproofing agent.

[0104] The anti - corrosion agent can use environmentally friendly materials without heavy metals such as barium phosphosilicate and calcium borosilicate.

[0105] In addition, in the present invention, the cutoff coating can also include an extender pigment.

[0106] In the present invention, the cutoff coating can be applied with a brush or by spraying to promote the chemical curing reaction with the conductor.

[0107] According to the present invention, a ceramic pigment can be added to the cutoff coating to prevent internal corrosion caused by the intrusion of acidic corrosion particles.

[0108] In the present invention, the ceramic pigment can be made by mixing 5 - 40 wt% of mica with a particle size of 1 - 100 microns, 10 - 50 wt% of stone powder, 5 - 50 wt% of emulsion, 10 - 70 wt% of water, and 1 - 10 wt% of pigment, and based on 100 parts by weight of the main components, it is used in the range of 0.1 - 5 parts by weight.

[0109] In the present invention, the mica can be used in the form of flakes or powders. If mica with the particle size is used, the adhesion to the conductor can be improved.

[0110] In addition, in the present invention, the stone powder can use the commonly used stone powder, or can use crushed natural stone or artificial stone, etc. The stone powder can use the same particle size as the mica, which helps to improve the adhesion to the conductor.

[0111] In the present invention, ammonia, amine, etc. can be used for the emulsion, or emulsified paints, water-soluble paints, etc. with low toxicity can be used.

[0112] In addition, in addition to mixing pigments as a method of imparting color, the mica surface can also be pre-coated with pigments. Specifically, inorganic pigments, organic pigments and other pigments can be mixed in mica, and after kneading, the pigments are coated on the surface of mica, and the mica coated with pigments is fired or hardened, and color is imparted through a cooling box.

[0113] In addition, in the present invention, in order to prevent the painted surface and the painted surface from separating after a long time, a ductile resin can be added. The flexible resin can improve the flexibility of the painted surface and further improve the adhesion. For the soft resin used at this time, acrylic resin, methacrylic resin, polyurethane resin, phenolic resin, styrene resin, natural rubber, SBR, NBR, etc. can be used, and its dosage should be 0.01 to 1.0 parts by weight based on 100 parts by weight of the main component.

[0114] 5. Coating of the above paint (sealing coating of external structures)

[0115] For the surface waterproof construction of internal structures, the above processes 1 to 4 can be completed, but for external structures exposed to the sun and the outer layer, the following stages are also included. For external structures, perform the step (4) described above.

[0116] (5) The stage of coating the external coating paint with a differential thermal polyurethane paint containing differential thermal powder on the painted surface; more are included.

[0117] That is to say, after the river coating sprayed in the stage (3) and the surface coating sprayed in the stage (4) are cured and maintained, the top coating can be sprayed on the surface of the sprayed coating.

[0118] In the present invention, the phase diagram paint uses a solvent-free two-component polyurethane paint.

[0119] In the present invention, the solvent-free liquid polyurethane paint is characterized in that it uses acrylic polyurethane resin as the basic resin and includes silane, paraffin, benzoate, polyurethane accelerator, dispersant, calcium carbonate and pigments.

[0120] In the present invention, the acrylic polyurethane resin forming the solvent-free different-liquid polyurethane paint is obtained by mixing and reacting using acrylic polyol as the main resin and isocyanate as the curing agent resin in the presence of a solvent (butadiene or butadiene series).

[0121] At this time, the acrylic polymer is preferably one with a solid content greater than 80%, and more specifically, one with a solid content of 80 to 90% is preferably used.

[0122] In this way, by using an acrylic polymer with a high degree of morphological fractionation, physical properties such as durability and abrasion resistance can be improved.

[0123] In the present invention, the solvent-free liquid polyurethane coating can be composed of 20 to 40 parts by weight of an acrylic polyurethane resin, 15 to 30 parts by weight of a silane, 1 to 10 parts by weight of paraffin, 1 to 10 parts by weight of phenytoin, 0.1 to 5 parts by weight of a polyurethane accelerator, 0.5 to 5 parts by weight of a dispersant, 1 to 20 parts by weight of calcium carbonate, and 0.1 to 10 parts by weight of a pigment.

[0124] The acrylic polyurethane resin can be synthesized into a polyurethane emulsion by adding any one acrylate monomer selected from 2-hydroxyethyl methacrylate (2-HEMA), methyl methacrylate (MMA), n-butyl acrylate (n-BA), and acrylic acid (AAc), as well as an anionic or non-ionic emulsifier and an initiator.

[0125] The acrylic polyurethane resin has a fast drying speed and exhibits excellent weather resistance, durability, and ultraviolet stability under external exposure conditions. It is composed of water-soluble components and is environmentally friendly.

[0126] The silane is used to enhance the adhesion of the coating and improve the water resistance and durability of the coating film. It includes any one selected from Glycidoxy propyl methyldehoxy silane, Glychacryloxy propyl triethyloxy triethoxy silane, Glyc, and Vinyltrimethoxy silane.

[0127] The wax, together with the characteristics of the resin itself, plays a role in strengthening and maintaining the gloss.

[0128] The bentonite has the function of preventing the sedimentation of the components and improving the workability.

[0129] The polyurethane accelerator has the function of promoting the reaction between acrylic polyol and isocyanate and improving the physical properties of the resulting acrylic polyurethane resin.

[0130] The dispersant is used to uniformly disperse coloring pigments in the liquid phase during the mixing of acrylic polyurethane coatings to form a coating film with uniform color. Any one selected from non-ionic polyoxyethylene surfactants or anionic polycarbonate surfactants can be used in the present invention.

[0131] In the present invention, the calcium carbonate has the functions of enhancing the physical strength of the coating, improving durability and scratch resistance.

[0132] In addition, in the present invention, extender pigments can be used as the pigments. The extender pigments are used for the color development of acrylic polyurethane coatings, and any one selected from red iron oxide, titanium dioxide, yellow iron oxide, and carbon black can be used.

[0133] In addition to the above components, the phase diagram coating may further include additives such as thickeners, defoamers, and cosolvents.

[0134] The cosolvent is used to improve the dissolving power of the solvent and make the film formation shape easier. Any one selected from bisphenol (2,2,4-trimethyl-1,3-pentanediol monoisobutyrate), N-Butyl Acetate, and 2-Butoxi alcohol can be used.

[0135] In the present invention, the solvent-free liquid polyurethane coating can exhibit differential thermal performance by using things including differential thermal powder.

[0136] In the present invention, the differential thermal powder can effectively reflect the infrared rays that generate heat energy in solar energy and play a role in suppressing the conversion of infrared rays into heat energy.

[0137] In the present invention, the differential thermal powder can be one or more metal oxides, such as the group consisting of antimony tin oxide, indium tin oxide, cesium tungsten oxide, and antimony trioxide-zinc oxide.

[0138] The differential thermal powder can be in the form of spherical, rod-shaped, needle-shaped particles or hollow shapes, and powders with an average particle size of 2 to 100 nm are recommended.

[0139] In the present invention, the differential thermal powder should be included in the range of 0.1 to 5 parts by weight in the solvent-free two-component polyurethane coating.

[0140] In the present invention, when applying the outer coating of the phase diagram, the phase diagram can be coated once with a writing brush and twice with spray. For parts where spray coating is difficult, such as corners, the boundaries between the floor and the wall, and strip parts, etc., pre-coating is carried out, and then spray coating is carried out in a way of ultra-fast curing. Therefore, tight coating can be carried out without missing the outer capping coating, so as to exert the complete waterproof protection effect.

[0141] For the building roof waterproofing method constructed according to the above method, in the waterproof construction mainly targeting the bamboo joints, roofs or roof parking lots of buildings such as apartments and buildings, by pouring and repairing the concrete crack parts after dehumidification, the durability of the structure can be increased, thereby reducing the maintenance cost of the structure. And by applying the polyurea pouring repair agent to the dehumidified parts, the adhesion to the floating parts can be strengthened, thereby reducing the generation of waste. In addition, since it is a method of re-construction while keeping the original state without demolishing the old waterproof surface, no waste and flying dust will be generated, which is an environmentally friendly construction method. It has the advantages of effectively repairing the crack parts and excellent waterproof quality. Moreover, without a separate base construction stage, by carrying out the next and capping coatings, the construction time can be saved, the increase in the construction unit price can be minimized, and the durability of the structure can be greatly extended, prolonging the life of the structure. In addition, by using the acrylic-based environmentally friendly elastic waterproof coating, the seismic resistance and flame retardant performance can be improved, the emergency escape time in case of a fire in the structure can be ensured, the casualties can be minimized, the physical properties of the coating film can be improved, and the durability can be increased, so that the waterproof effect can be exerted for a long time without frequent maintenance construction, reducing the maintenance cost.

[0142] The present invention will be described in more detail below according to the implementation examples. However, the scope of the present invention is not limited by the following examples.

[0143] [Examples]

[0144] Example 1

[0145] (1) Surface finishing work: Visually inspect the swollen parts of the apartment roof, and remove the parts with reduced adhesion with a scraper and a grinding wheel.

[0146] (2) Repair the parts with reduced adhesion using injection agents: After the above surface finishing work, at the positions marked as the parts with reduced adhesion of the structure, polyurethane injection repair agent and environmentally friendly polymer bonding repair agent were injected for injection bonding repair.

[0147] At this time, for the polyurethane injection water retention agent, a two-component polyurethane injection water retention agent composed of a main agent containing calcium hydroxide nano-components and fluorinated graphite fibers and a polyurethane prepolymer obtained by the reaction of isocyanate and polyol, and a curing agent containing polyamine was used for repair.

[0148] (3) River channel spraying: On the surface where the surface treatment process is implemented, as river channel spraying, an acrylic-based elastic film waterproof coating was thinly sprayed. The acrylic-based elastic film waterproof coating consists of 25 parts by weight of acrylic-modified latex, 15 parts by weight of zinc powder, 0.8 parts by weight of vinyltrimethoxysilane, 1.5 parts by weight of polyvinyl butyral resin, 1.5 parts by weight of wood carbonization capture liquid, 1.2 parts by weight of metal vanadate, 2.0 parts by weight of bromobenzene, 30 parts by weight of alcohol solvent, 1.5 parts by weight of defoamer, 1.5 parts by weight of tackifier, 20 parts by weight, and 20 parts by weight of acrylic-based elastic film waterproof coating. A coating was used.

[0149] (4) Paint spraying: On the surface where the acrylic-based elastic film waterproof coating was sprayed and cured, post-curing solvent-free epoxy resin was used for paint spraying.

[0150] Silver nanoparticles and copper nanoparticles (with an average diameter of 50 nanometers) were added to the post-curing solvent-free epoxy resin, which includes a silicate-based initiator and a barium phosphosilicate-based corrosion and scale inhibitor, and the coating was carried out by means of one-time brush coating and two-time spraying.

[0151] Example 2

[0152] It was implemented in the same method as in the said Example 1.

[0153] The acrylic-based elastic film waterproof coating for the next spraying consists of 25 parts by weight of acrylic-modified latex, 15 parts by weight of zinc powder, 0.8 parts by weight of vinyltrimethoxysilane, 1.5 parts by weight of polystyrene butyl ester resin, 1.5 parts by weight of wood carbonization capture liquid, 1.2 parts by weight of metal vanadate, 2.0 parts by weight of bromobenzene, 30 parts by weight of alcohol solvent, 1.5 parts by weight of defoamer, 1.5 parts by weight of tackifier, and 20 parts by weight of water, including the 20 parts by weight and 20 parts by weight of acrylic-based composition. Compared with 100 parts by weight of acid-modified latex, the composition of the acrylic-based elastic film waterproof coating including 2.5 parts by weight of lithium carbonate is different.

[0154] Example 3

[0155] It was implemented in the same method as in the said Example 1.

[0156] The acrylic elastic film waterproof coating for the next spraying is composed of 25 parts by weight of acrylic modified latex, 15 parts by weight of zinc powder, 0.8 parts by weight of vinyl methoxysilane, 1.5 parts by weight of polystyrene butyl ester resin, 1.5 parts by weight of wood carbonization capture liquid, 1.2 parts by weight of metal vanadate, 2.0 parts by weight of benzene bromide, 30 parts by weight of alcohol solvent, 1.5 parts by weight of defoamer, 1.5 parts by weight of tackifier, and 20 parts by weight of water, including the 20 parts by weight and the acrylic composition of 20 parts by weight. Compared with 100 parts by weight of acid modified latex, 3.5 parts by weight of impact reinforcing agent (ethylene-propylene rubber) of reactive olefin resin composition is added, which is implemented differently from the acrylic elastic film waterproof coating.

[0157] Example 4

[0158] After the final spraying was carried out in the same manner as in Example 1, the same above spraying was carried out.

[0159] (5) Phase diagram spraying: On the surface of the painted surface that has been sprayed and hardened, phase diagram spraying was carried out using a solvent-free liquid polyurethane coating. The solvent-free polyurethane coating is a solvent-free polyurethane coating prepared by mixing 30 parts by weight of acrylic polyurethane resin, 20 parts by weight of silane, 3 parts by weight of paraffin, 5 parts by weight of benzoate, 2 parts by weight of polyurethane accelerator, 2.0 parts by weight of dispersant, 5 parts by weight of calcium carbonate, and 5 parts by weight of extender pigment with other additives. The thermogravimetric tin within about 2.0 range in the solvent-free polyurethane coating (including in the coating of the paint), and the surface thickness requirement of the solvent-free polyurethane coating is 2.0.

[0160] At this time, the acrylic polyurethane resin used was obtained by reacting an acrylic polymer main body with a solid content of about 85% by weight and an isocyanate curing agent in a solvent, and the total film thickness was maintained at about 250 microns.

[0161] Comparative Example 1

[0162] It is the same as Example 1, but only different from the implementation where the acrylic elastic film waterproof coating was not sprayed in (3).

[0163] Comparative Example 2

[0164] It is the same as Example 1, but only different from the implementation where the cutoff coating in (4) was not sprayed.

[0165] Performance evaluation

[0166] 1. Evaluation of opacity, adhesion strength, acid resistance, flexural resistance, and water resistance

[0167] According to Examples 1 to 4 and Comparative Examples 1 and 2, the sound insulation, adhesion strength, acid resistance, flex resistance, and water resistance of the formed coating films were evaluated, and the results are shown in Table 1.

[0168]

Table 1

[0169]

[0170] As can be seen from the results in Table 1 above, when the waterproof coating manufactured by the present invention is applied to a structure, it has excellent characteristics in terms of sound insulation and adhesion strength, and also has excellent results in other physical properties.

[0171] 2. Evaluation of flame retardancy, weather resistance, chloride ion penetration resistance, and impact resistance

[0172] The flame retardancy, weather resistance, chloride ion penetration resistance, and impact resistance of the coating films formed in Examples 1 to 4 and Comparative Examples 1 and 2 were evaluated. (The flame retardancy was evaluated by the method of UL94, and the other physical properties were evaluated by the method of KS F4929(2010).)

[0173] The evaluation results showed that in terms of flame retardancy, Examples 1 to 4 according to the present invention showed self-extinguishability in the samples, but in the case of Comparative Examples 1 and 2, the self-extinguishability was insufficient. In addition, in terms of other physical properties, appropriate or no abnormal results were shown in all samples.

[0174] From the above experimental results, it can be confirmed that when the waterproof and corrosion-resistant surface coating construction is carried out using the waterproof coating specified in the present invention, it has excellent coating physical properties such as excellent mechanical and chemical properties.

[0175] As described above, the ideal embodiments of the present invention are initiated in this list. Although certain terms are used, they are only used in a general sense to simply illustrate the technical content of the present invention and help understand the invention, and are not intended to limit the scope of the present invention. In addition to the embodiments started here, other modified examples based on the technical idea of the present invention can also be implemented, which is self-evident to those with ordinary knowledge in the technical field to which the present invention belongs.

Claims

1. A building roof waterproofing process, characterized in that: The building roof waterproofing process includes: (1) In the case of building roof maintenance, the stage of dehumidification treatment of exposed cracked areas; (2) injecting polyurethane grouting repair agent into the cracks of the water dehumidification to implement grouting repair; (3) applying the next coating using an acrylic elastic film waterproof coating on the surface of the structure after finishing; and (4) a stage of performing surface coating on the coated surface, The polyurethane injection water retaining agent is a two-component polyurethane injection water retaining agent composed of a main component of a polyurethane prepolymer obtained by reacting isocyanate and polyol and a curing agent containing polyamine, and a polyurethane injection water retaining agent containing a calcium hydroxide nano-component and a fluorinated graphite fiber. The acrylic elastic film waterproof coating is composed of acrylic modified latex, zinc powder, vinyl methoxysilane, polyvinyl butyral resin, wood carbonization capture liquid, vanadate metal salt, phenyl bromide, alcohol solvent, defoamer, thickener, 100 parts by weight of liquid components including water and 10 to 100 parts by weight of inorganic fillers including cement powder and clay, and uses an elastic film waterproof coating.

2. The building roof waterproofing process according to claim 1, characterized in that: The fluorinated graphene fiber used for the polyurethane injection repair agent is an oxide graphene fiber with a surface modified by fluorine.

3. The building roof waterproofing process according to claim 1, characterized in that: The acrylic elastic coating waterproof paint comprises 0.1 to 1.0 parts by weight of lithium carbonate based on 100 parts by weight of the acrylic modified latex.

4. The building roof waterproofing process according to claim 1, characterized in that: The acrylic elastic coating waterproof paint further includes an impact reinforcing agent composed of a reactive olefin resin in an amount of 0.1 to 2.0 parts by weight, compared to 100 parts by weight of the acrylic modified latex resin.

5. The building roof waterproofing process according to claim 1, characterized in that: After the step (4), the method further includes applying an external coating on the coated surface using a differential thermal polyurethane coating containing differential thermal powder.

6. The building roof waterproofing process according to claim 5, characterized in that: The differential thermal polyurethane coating further comprises silane, paraffin, benzene clay, a reaction accelerator, a dispersant, calcium carbonate and a pigment.

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