CN113174153A - Multifunctional waterproof reinforced coating and preparation method and construction method thereof - Google Patents
Multifunctional waterproof reinforced coating and preparation method and construction method thereof Download PDFInfo
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- CN113174153A CN113174153A CN202110263058.5A CN202110263058A CN113174153A CN 113174153 A CN113174153 A CN 113174153A CN 202110263058 A CN202110263058 A CN 202110263058A CN 113174153 A CN113174153 A CN 113174153A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
- C09D1/06—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances cement
- C09D1/08—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances cement with organic additives
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F21/00—Implements for finishing work on buildings
- E04F21/02—Implements for finishing work on buildings for applying plasticised masses to surfaces, e.g. plastering walls
Abstract
The invention discloses a multifunctional waterproof reinforced coating and a preparation method and a construction method thereof, wherein the coating is composed of a liquid material component and a powder material component in a weight ratio of 1: 4-1: 1, and the liquid material component comprises the following raw materials in parts by weight: 10-40 parts of butylbenzene emulsion and/or 20-35 parts of acrylic emulsion A, 10-20 parts of acrylic emulsion B, 10-20 parts of nano water-based acrylic emulsion, 2-3 parts of non-ionic water-based silane-siloxane emulsion, 0.1-0.5 part of anticorrosive bactericide, 0.1-0.5 part of defoaming agent, 2-5 parts of film forming auxiliary agent and 25-40 parts of water, wherein the powder material component comprises the following raw materials in parts by weight: 30-40 parts of cement, 25-40 parts of heavy calcium carbonate, 25-40 parts of quartz sand, 1-2 parts of ethylene/vinyl laurate/vinyl chloride ternary copolymer rubber powder and 0.05-0.1 part of modified cellulose ether. The excellent water-repellent and anti-permeability capability and the interface bonding strength of the waterproof reinforced coating ensure that the waterproof reinforced coating not only has excellent waterproof capability in a short time, but also has the waterproof property of maintaining the waterproof capability in long-term wading and severe environment.
Description
Technical Field
The invention relates to a multifunctional waterproof reinforced coating, a preparation method and a construction method thereof, belonging to the technical field of architectural decoration.
Background
In the building decoration project, the quality problems of stone alkali return, water spot, yellowing, moisture regain and shedding of emulsion paint, mildew and blackening of wallpaper and the like caused by the corrosion of base moisture and alkaline substances are endless, especially in residential basements, market underground spaces, rail transit stations, and long-term wading areas such as hotel swimming pools, landscape pools, SPA pools and the like.
At present, in order to solve the problems, protective materials such as stone protective agents, alkali-resistant sealing primers, water-based base films and the like are commonly used for treating stones, but the protective materials all have certain defects. The main problems of the stone protective agent are as follows: the oily stone protective agent has a good protective effect, but can affect the compatibility of stone and cement-based bonding materials, so that the bonding strength is greatly reduced, the quality problems of shelling, hollowing, falling, cracking and the like occur, and the oily stone protective agent contains volatile organic compounds which can be released, so that the indoor environment is polluted, the human health is harmed, and the aqueous stone protective agent has short protective aging, is corroded by alkaline solution for a long time, and is easy to cause the stone protective layer to lose efficacy; among them, the alkali-resistant primer sealer and the water-based base film have main problems: the wet base layer has poor surface adhesion, and quality problems such as peeling and falling are easy to occur; the sealing effect is insufficient, and the quality problems of surface layer alkali return and the like caused by the basic substance extravasation of the base layer cannot be inhibited for a long time; the quality problems of swelling, foaming, falling off and the like easily occur after long-term soaking.
In particular, the protective materials lack the capability of resisting the deformation of the base layer, and once the stone base layer cracks, the protective materials are damaged, so that the protective effect is greatly reduced.
Disclosure of Invention
The invention aims to provide a multifunctional waterproof reinforced coating, a preparation method and a construction method thereof, and the multifunctional waterproof reinforced coating solves the problems that in the prior art, a stone protective material is poor in waterproof and anti-permeability performance, and a coating is easy to crack and damage under stress strain to influence the protective performance, and simultaneously solves the quality problems of poor adhesion of a wet base layer and insufficient sealing effect.
In order to achieve the purpose, the invention adopts the technical scheme that: the powder material consists of a liquid material component and a powder material component in a weight ratio of 1: 4-1: 1, wherein the liquid material component comprises the following raw materials in parts by weight: 10-40 parts of butylbenzene emulsion and/or 20-35 parts of acrylic emulsion A, 10-20 parts of acrylic emulsion B, 10-20 parts of nano water-based acrylic emulsion, 2-3 parts of non-ionic water-based silane-siloxane emulsion, 0.1-0.5 part of anticorrosive bactericide, 0.1-0.5 part of defoaming agent, 2-5 parts of film forming auxiliary agent and 25-40 parts of water, wherein the powder material component comprises the following raw materials in parts by weight: 30-40 parts of cement, 25-40 parts of heavy calcium carbonate, 25-40 parts of quartz sand, 1-2 parts of ethylene/vinyl laurate/vinyl chloride ternary copolymer rubber powder and 0.05-0.1 part of modified cellulose ether.
The further improved scheme in the technical scheme is as follows:
1. in the scheme, the butylbenzene emulsion is carboxylic butylbenzene copolymer emulsion, the viscosity is 100-500 mPa & s, the pH is 7-11, the solid content of the emulsion is 45-50%, the acrylic emulsion A is styrene/acrylic copolymer emulsion, the solid content of the emulsion is 45-50%, and the particle size of particles in the emulsion is 0.1-0.2 mu m;
or the butylbenzene emulsion is carboxylic butylbenzene copolymer emulsion, the viscosity is 100-500 mPa & s, the pH is 7-11, and the solid content of the emulsion is 45-50%;
or the acrylic emulsion A is styrene/acrylic copolymer emulsion, the solid content of the emulsion is 45-50%, and the particle size of particles in the emulsion is 0.1-0.2 mu m.
2. In the scheme, the emulsion solid content of the acrylic emulsion B is more than 55%, and the particle size of particles in the emulsion is 0.25-0.35 mu m.
3. In the scheme, the particle size of the particles in the nano water-based acrylic emulsion is 20-40 nm.
4. In the above embodiment, the viscosity of the modified cellulose ether is 40000 mPa · s.
5. In the scheme, the quartz sand has a mass ratio of 20-40% with a particle size of 40-80 meshes and 60-80% with a particle size of 80-120 meshes.
In order to achieve the aim, the invention also adopts a preparation method of the multifunctional waterproof reinforced coating,
the liquid material comprises the following components: adding the butylbenzene emulsion and/or acrylic emulsion A, the acrylic emulsion B and water into a reaction kettle, stirring for 30min at the rotating speed of 200r/min, then adding the nano water-based acrylic emulsion, the non-ionic water-based silane-siloxane emulsion, the film forming assistant and the anticorrosive bactericide, stirring for 30-60 min at the rotating speed of 250r/min, then adding the defoaming agent, continuing stirring for 10-15 min at the rotating speed of 300r/min, and standing for 10 min;
the powder comprises the following components: adding cement, coarse whiting and quartz sand into a dry powder mixer, mixing and stirring for 15-20 min, adding ethylene/vinyl laurate/vinyl chloride terpolymer rubber powder and modified cellulose ether, and continuously stirring for 10-15 min;
and uniformly mixing the liquid material component and the powder material component according to the proportion to obtain the waterproof reinforced coating.
In order to achieve the purpose, the invention also adopts a construction method of the multifunctional waterproof reinforced coating, which comprises the following steps:
s1: treating a base surface, namely cleaning impurities and dirt on the surface to be coated, and keeping the surface to be coated clean and dry;
s2: and (3) construction and painting, namely uniformly mixing the liquid material component and the powder material component according to the weight ratio of 1: 4-1: 1 in an operation site to form a coating, and uniformly coating the coating on a surface to be painted.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
1. the multifunctional waterproof reinforced coating and the preparation method and the construction method thereof have the advantages that the coating formed by compounding the liquid material component and the powder material component is applied to the surface of the stone to form a protective coating, so that the coating has no seepage diffusion phenomenon during surface hydrophobic test, has no seepage discoloration phenomenon in a 500mm water column 24h seepage resistance test, and has good water repellency and seepage resistance; meanwhile, the protective coating is tightly combined with the stone, the damage depth inside the stone reaches 3mm after the stone is subjected to drawing damage, the protective coating has excellent compatibility with cementing materials such as cement, the tensile bonding strength reaches 3.5MPa under the standard condition, and the tensile bonding strength can still be maintained at 2.8MPa even after the stone is subjected to heat, alkaline water and freeze-thaw cyclic treatment; the good water repellency and impermeability and the interface bonding strength ensure that the waterproof reinforced coating disclosed by the invention not only has excellent waterproof capability in a short time, but also has the waterproof property of maintaining the waterproof capability in long-term wading and severe environments.
2. According to the multifunctional waterproof reinforced coating, the preparation method and the construction method thereof, on one hand, the bonding strength between the protective coating formed by the coating and gelled materials such as stone and cement is high, and even if the stone cracks to generate stress, the coating is difficult to tear and damage, so that the integrity of the coating is influenced, on the other hand, through a flexibility test, the protective coating has no cracks and has good flexibility, and the stress strain of the stone can be buffered by utilizing the flexible strain of the protective coating, so that the protective performance of the protective coating cannot be influenced due to the cracking of the stone and other reasons.
3. The multifunctional waterproof reinforced coating is based on a two-component system, and by adding the nano water-based acrylic emulsion and the ethylene/vinyl laurate/vinyl chloride terpolymer rubber powder, even if the coating is used on a wet base layer, the protective coating is firmly bonded, has no phenomena of peeling and falling, has excellent alkali return resistance, and obviously improves the water resistance and alkali resistance of the coating.
4. According to the multifunctional waterproof reinforced coating and the preparation method and the construction method thereof, the quartz sand with the particle size of 40-80 meshes and the particle size of 80-120 meshes is selected for compounding, the compactness of the protective coating is improved, the water impermeability and the coating strength are enhanced by optimizing the particle size distribution and the mass ratio of the quartz sand, and the waterproof and durable performances of the coating are further improved.
Detailed Description
Example 1: the multifunctional waterproof reinforced coating consists of a liquid material component and a powder material component in a weight ratio of 1:3, wherein the liquid material component comprises the following raw materials in parts by weight: 30 parts of butylbenzene emulsion, 15 parts of acrylic emulsion B, 15 parts of nano water-based acrylic emulsion, 2 parts of non-ionic water-based silane-siloxane emulsion, 0.5 part of antiseptic bactericide, 0.5 part of defoaming agent, 2 parts of film-forming assistant and 35 parts of water, wherein the powder component comprises the following raw materials in parts by weight: 30 parts of cement, 30 parts of heavy calcium carbonate, 38.5 parts of quartz sand, 1.5 parts of ethylene/vinyl laurate/vinyl chloride terpolymer rubber powder and 0.1 part of modified cellulose ether.
In the liquid material components, the butylbenzene emulsion is a non-ionic emulsifier system, a carboxylic butylbenzene copolymer emulsion with hydrolysis resistance has the viscosity of 100-500 mPa & s and the pH of 7-11, has good compatibility with cementing materials such as cement and the like, has the solid content of 45-50%, and can remarkably improve the bonding strength of the system; preferably, the present invention uses Xinte Ma 29Y57 or Shengxi ao M3618.
The acrylic emulsion A is styrene/acrylic acid copolymer emulsion and a polymer formed by copolymerizing styrene/acrylic acid, forms a chemical bond with the base material, has the solid content of 45-50%, and remarkably improves the bonding strength of the base material; the emulsion has small particles, the particle size is 0.1-0.2 mu m, the formed film is compact, and the compactness of the system can be improved; preferably, badefh FS6607 is used in the present invention.
The acrylic emulsion B is an environment-friendly acrylic polymer, has high emulsion solid content of over 55 percent, small emulsion particles with the particle size of 0.25-0.35 mu m, compact film formation, excellent flexibility, water resistance and alkali resistance, and can play a role in improving the crack resistance, water impermeability and the like of a system; preferably, the present invention uses badfu FS320A or dow TM 2012.
The particle size of the particles in the nano water-based acrylic emulsion is 20-40 nm, and the nano water-based acrylic emulsion has super-strong permeability and excellent wettability; preferably, the present invention uses the Xin damar PR 3500.
The active ingredients in the non-ionic water-based silane-siloxane emulsion contain alkoxy silane and polydimethylsiloxane, the content of the active ingredients reaches 40%, the active ingredients can deeply permeate to perform chemical reaction with masonry or cement-based materials, and the absorption of water by capillary holes is resisted, so that a lasting hydrophobic effect is generated; preferably, the present invention uses dow corning IE6683 or wacker BS 1802.
The antiseptic bactericide has broad-spectrum bactericidal effect on bacteria (including formaldehyde-resistant strains), mould, yeast and algae, can be quickly mixed and dissolved with aqueous solution, and does not contain environmental pollutants such as formaldehyde and the like; preferably, Langshan Preventol D7 is used in the present invention.
The defoamer belongs to a water-based emulsion defoamer, does not contain mineral oil, and is used for eliminating physical and chemical foaming and pinholes in the coating film forming process; preferably, the invention uses either basf SI2293 or hainshan AP 7072.
The film-forming assistant is helpful for wetting and dispersing the pigment and the filler, can promote the plastic flow and the elastic change of polymer particles in the emulsion, can effectively reduce the film-forming temperature of the polymer emulsion, and can form a film in a wider temperature range; preferably, the present invention uses Iseman TEXANOL 12-ester alcohol.
In the powder component, the cement is ordinary portland cement; preferably, the present invention uses p.w42.5 grade white portland cement.
The heavy calcium carbonate is used as a filler, so that the coating has the characteristics of no sedimentation, easy dispersion, good gloss and the like; preferably, the present invention uses 325 mesh heavy calcium carbonate.
In the quartz sand, the particle size is 40-80 meshes and 60-80% of the mass ratio, the particle size is 80-120 meshes, and the quartz sand with the particle size of 40-80 meshes and the particle size of 80-120 meshes is selected for compounding, so that the compactness of the protective coating can be effectively improved, the water impermeability and the coating strength are enhanced, and the waterproof and durable performances of the coating are further improved.
The ethylene/vinyl laurate/vinyl chloride ternary copolymer rubber powder has high solid content which reaches 98-100%, can remarkably improve the heat resistance and freeze-thaw cycle resistance of a system, and simultaneously improves the adhesion, bending strength, plasticity, wear resistance and construction performance; the hydrophobic property of the coating can be improved, the absorption of moisture is reduced, and liquid water is prevented from permeating into the coating through the surface of the coating or the capillary action; preferably, tile 8034H hydrophobic type rubber powder is used in the invention.
The modified cellulose ether is quick-fusible in cold water, has the viscosity of 40000 mPa & s, can be adsorbed on the surface of emulsion particles to form a coating layer, and plays a role in increasing the viscosity and improving the construction operability by increasing the volume of the emulsion particles; preferably, the present invention uses Tianpu MH4005 or MH 4019N.
The preparation method of the multifunctional waterproof reinforced coating comprises the following steps:
the liquid material comprises the following components: adding the butylbenzene emulsion, the acrylic emulsion B and water into a reaction kettle, stirring for 30min at the rotating speed of 200r/min, adding the nano water-based acrylic emulsion, the non-ionic water-based silane-siloxane emulsion, the film-forming assistant and the anticorrosive bactericide, stirring for 45min at the rotating speed of 250r/min, adding the defoaming agent, continuously stirring for 12min at the rotating speed of 300r/min, and standing for 10 min;
the powder comprises the following components: adding cement, coarse whiting and quartz sand into a dry powder mixer, mixing and stirring for 15-20 min, adding ethylene/vinyl laurate/vinyl chloride terpolymer rubber powder and modified cellulose ether, and continuously stirring for 10-15 min;
and uniformly mixing the liquid material component and the powder material component according to the proportion to obtain the waterproof reinforced coating.
The construction method of the multifunctional waterproof reinforced coating comprises the following steps:
s1: treating a base surface, namely cleaning impurities and dirt on the surface to be coated, and keeping the surface to be coated clean and dry;
s2: coating, namely mixing the liquid material component and the powder material component according to the mass ratio of 1:3, and uniformly stirring by using a mechanical stirrer to form a mixed coating; uniformly coating the natural stone bonding surface by adopting a high-pressure airless spraying mode, and coating twice (the coating can be carried out after the previous drying, and the coating can be carried out in a cross direction before and after the previous drying); the surface drying time of the coating at normal temperature (16-25 ℃) is 0.75-1 h, and the actual drying time is 1-1.5 h; the surface drying time at low temperature (5-15 ℃) is 1-1.25 h, and the actual drying time is 1.5-2 h; the surface drying time at high temperature (26-35 ℃) is 0.5-0.75 h, and the actual drying time is 1-1.5 h; the total thickness of the coating is 0.4-0.6 mm, and the dosage is 0.5-0.7 kg.
Example 2: a multifunctional waterproof reinforced coating is composed of a liquid material component and a powder material component in a weight ratio of 1:2.75, wherein the liquid material component comprises the following raw materials in parts by weight: 40 parts of butylbenzene emulsion, 10 parts of acrylic emulsion B, 10 parts of nano water-based acrylic emulsion, 3.4 parts of non-ionic water-based silane-siloxane emulsion, 0.3 part of antiseptic bactericide, 0.3 part of defoaming agent, 3 parts of film-forming assistant and 33 parts of water, wherein the powder component comprises the following raw materials in parts by weight: 40 parts of cement, 40 parts of heavy calcium carbonate, 29 parts of quartz sand, 1 part of ethylene/vinyl laurate/vinyl chloride terpolymer rubber powder and 0.05 part of modified cellulose ether.
In the liquid material components, the butylbenzene emulsion is a non-ionic emulsifier system, a carboxylic butylbenzene copolymer emulsion with hydrolysis resistance has the viscosity of 100-500 mPa & s and the pH of 7-11, has good compatibility with cementing materials such as cement and the like, has the solid content of 45-50%, and can remarkably improve the bonding strength of the system; preferably, the present invention uses Xinte Ma 29Y57 or Shengxi ao M3618.
The acrylic emulsion A is styrene/acrylic acid copolymer emulsion and a polymer formed by copolymerizing styrene/acrylic acid, forms a chemical bond with the base material, has the solid content of 45-50%, and remarkably improves the bonding strength of the base material; the emulsion has small particles, the particle size is 0.1-0.2 mu m, the formed film is compact, and the compactness of the system can be improved; preferably, badefh FS6607 is used in the present invention.
The acrylic emulsion B is an environment-friendly acrylic polymer, has high emulsion solid content of over 55 percent, small emulsion particles with the particle size of 0.25-0.35 mu m, compact film formation, excellent flexibility, water resistance and alkali resistance, and can play a role in improving the crack resistance, water impermeability and the like of a system; preferably, the present invention uses badfu FS320A or dow TM 2012.
The particle size of the particles in the nano water-based acrylic emulsion is 20-40 nm, and the nano water-based acrylic emulsion has super-strong permeability and excellent wettability; preferably, the present invention uses the Xin damar PR 3500.
The active ingredients in the non-ionic water-based silane-siloxane emulsion contain alkoxy silane and polydimethylsiloxane, the content of the active ingredients reaches 40%, the active ingredients can deeply permeate to perform chemical reaction with masonry or cement-based materials, and the absorption of water by capillary holes is resisted, so that a lasting hydrophobic effect is generated; preferably, the present invention uses dow corning IE6683 or wacker BS 1802.
The antiseptic bactericide has broad-spectrum bactericidal effect on bacteria (including formaldehyde-resistant strains), mould, yeast and algae, can be quickly mixed and dissolved with aqueous solution, and does not contain environmental pollutants such as formaldehyde and the like; preferably, Langshan Preventol D7 is used in the present invention.
The defoamer belongs to a water-based emulsion defoamer, does not contain mineral oil, and is used for eliminating physical and chemical foaming and pinholes in the coating film forming process; preferably, the invention uses either basf SI2293 or hainshan AP 7072.
The film-forming assistant is helpful for wetting and dispersing the pigment and the filler, can promote the plastic flow and the elastic change of polymer particles in the emulsion, can effectively reduce the film-forming temperature of the polymer emulsion, and can form a film in a wider temperature range; preferably, the present invention uses Iseman TEXANOL 12-ester alcohol.
In the powder component, the cement is ordinary portland cement; preferably, the present invention uses p.w42.5 grade white portland cement.
The heavy calcium carbonate is used as a filler, so that the coating has the characteristics of no sedimentation, easy dispersion, good gloss and the like; preferably, the present invention uses 325 mesh heavy calcium carbonate.
In the quartz sand, the mass ratio of the particle size of 40-80 meshes is 20-40%, and the mass ratio of the particle size of 80-120 meshes is 60-80%.
The ethylene/vinyl laurate/vinyl chloride ternary copolymer rubber powder has high solid content which reaches 98-100%, can remarkably improve the heat resistance and freeze-thaw cycle resistance of a system, and simultaneously improves the adhesion, bending strength, plasticity, wear resistance and construction performance; the hydrophobic property of the coating can be improved, the absorption of moisture is reduced, and liquid water is prevented from permeating into the coating through the surface of the coating or the capillary action; preferably, tile 8034H hydrophobic type rubber powder is used in the invention.
The modified cellulose ether is quick-fusible in cold water, has the viscosity of 40000 mPa & s, can be adsorbed on the surface of emulsion particles to form a coating layer, and plays a role in increasing the viscosity and improving the construction operability by increasing the volume of the emulsion particles; preferably, the present invention uses Tianpu MH4005 or MH 4019N.
The preparation method of the multifunctional waterproof reinforced coating comprises the following steps:
the liquid material comprises the following components: adding the butylbenzene emulsion, the acrylic emulsion B and water into a reaction kettle, stirring for 30min at the rotating speed of 200r/min, adding the nano water-based acrylic emulsion, the non-ionic water-based silane-siloxane emulsion, the film-forming assistant and the anticorrosive bactericide, stirring for 45min at the rotating speed of 250r/min, adding the defoaming agent, continuously stirring for 12min at the rotating speed of 300r/min, and standing for 10 min;
the powder comprises the following components: adding cement, coarse whiting and quartz sand into a dry powder mixer, mixing and stirring for 15-20 min, adding ethylene/vinyl laurate/vinyl chloride terpolymer rubber powder and modified cellulose ether, and continuously stirring for 10-15 min;
and uniformly mixing the liquid material component and the powder material component according to the proportion to obtain the waterproof reinforced coating.
The construction method of the multifunctional waterproof reinforced coating comprises the following steps:
s1: treating a base surface, namely cleaning impurities and dirt on the surface to be coated, and keeping the surface to be coated clean and dry;
s2: coating, namely mixing the liquid material component and the powder material component according to the mass ratio of 1:2.75, and uniformly stirring by using a mechanical stirrer to form a mixed coating; uniformly coating the artificial stone bonding surface by adopting a roll coating mode, and coating twice (the coating can be carried out after the previous drying, and the coating can be carried out in a cross direction before and after the previous coating); the surface drying time of the coating at normal temperature (16-25 ℃) is 1.0-1.25 h, and the actual drying time is 1.5-2 h; the surface drying time at low temperature (5-15 ℃) is 1.25-1.5 h, and the actual drying time is 2-2.5 h; the surface drying time at high temperature (26-35 ℃) is 0.75-1.0 h, and the actual drying time is 1.5-2 h; the total thickness of the coating is 0.6-0.8 mm, and the dosage is 0.8-1.0 kg.
Example 3: the multifunctional waterproof reinforced coating consists of a liquid material component and a powder material component in a weight ratio of 1:3.25, wherein the liquid material component comprises the following raw materials in parts by weight: 30 parts of acrylic emulsion A, 15 parts of acrylic emulsion B, 15 parts of nano water-based acrylic emulsion, 4.2 parts of non-ionic water-based silane-siloxane emulsion, 0.5 part of antiseptic bactericide, 0.3 part of defoaming agent, 5 parts of film-forming assistant and 30 parts of water, wherein the powder component comprises the following raw materials in parts by weight: 35 parts of cement, 38 parts of heavy calcium carbonate, 25 parts of quartz sand, 2 parts of ethylene/vinyl laurate/vinyl chloride terpolymer rubber powder and 0.075 part of modified cellulose ether.
In the liquid material components, the butylbenzene emulsion is a non-ionic emulsifier system, a carboxylic butylbenzene copolymer emulsion with hydrolysis resistance has the viscosity of 100-500 mPa & s and the pH of 7-11, has good compatibility with cementing materials such as cement and the like, has the solid content of 45-50%, and can remarkably improve the bonding strength of the system; preferably, the present invention uses Xinte Ma 29Y57 or Shengxi ao M3618.
The acrylic emulsion A is styrene/acrylic acid copolymer emulsion and a polymer formed by copolymerizing styrene/acrylic acid, forms a chemical bond with the base material, has the solid content of 45-50%, and remarkably improves the bonding strength of the base material; the emulsion has small particles, the particle size is 0.1-0.2 mu m, the formed film is compact, and the compactness of the system can be improved; preferably, badefh FS6607 is used in the present invention.
The acrylic emulsion B is an environment-friendly acrylic polymer, has high emulsion solid content of over 55 percent, small emulsion particles with the particle size of 0.25-0.35 mu m, compact film formation, excellent flexibility, water resistance and alkali resistance, and can play a role in improving the crack resistance, water impermeability and the like of a system; preferably, the present invention uses badfu FS320A or dow TM 2012.
The particle size of the particles in the nano water-based acrylic emulsion is 20-40 nm, and the nano water-based acrylic emulsion has super-strong permeability and excellent wettability; preferably, the present invention uses the Xin damar PR 3500.
The active ingredients in the non-ionic water-based silane-siloxane emulsion contain alkoxy silane and polydimethylsiloxane, the content of the active ingredients reaches 40%, the active ingredients can deeply permeate to perform chemical reaction with masonry or cement-based materials, and the absorption of water by capillary holes is resisted, so that a lasting hydrophobic effect is generated; preferably, the present invention uses dow corning IE6683 or wacker BS 1802.
The antiseptic bactericide has broad-spectrum bactericidal effect on bacteria (including formaldehyde-resistant strains), mould, yeast and algae, can be quickly mixed and dissolved with aqueous solution, and does not contain environmental pollutants such as formaldehyde and the like; preferably, Langshan Preventol D7 is used in the present invention.
The defoamer belongs to a water-based emulsion defoamer, does not contain mineral oil, and is used for eliminating physical and chemical foaming and pinholes in the coating film forming process; preferably, the invention uses either basf SI2293 or hainshan AP 7072.
The film-forming assistant is helpful for wetting and dispersing the pigment and the filler, can promote the plastic flow and the elastic change of polymer particles in the emulsion, can effectively reduce the film-forming temperature of the polymer emulsion, and can form a film in a wider temperature range; preferably, the present invention uses Iseman TEXANOL 12-ester alcohol.
In the powder component, the cement is ordinary portland cement; preferably, the present invention uses p.w42.5 grade white portland cement.
The heavy calcium carbonate is used as a filler, so that the coating has the characteristics of no sedimentation, easy dispersion, good gloss and the like; preferably, the present invention uses 325 mesh heavy calcium carbonate.
In the quartz sand, the mass ratio of the particle size of 40-80 meshes is 20-40%, and the mass ratio of the particle size of 80-120 meshes is 60-80%.
The ethylene/vinyl laurate/vinyl chloride ternary copolymer rubber powder has high solid content which reaches 98-100%, can remarkably improve the heat resistance and freeze-thaw cycle resistance of a system, and simultaneously improves the adhesion, bending strength, plasticity, wear resistance and construction performance; the hydrophobic property of the coating can be improved, the absorption of moisture is reduced, and liquid water is prevented from permeating into the coating through the surface of the coating or the capillary action; preferably, tile 8034H hydrophobic type rubber powder is used in the invention.
The modified cellulose ether is quick-fusible in cold water, has the viscosity of 40000 mPa & s, can be adsorbed on the surface of emulsion particles to form a coating layer, and plays a role in increasing the viscosity and improving the construction operability by increasing the volume of the emulsion particles; preferably, the present invention uses Tianpu MH4005 or MH 4019N.
The preparation method of the multifunctional waterproof reinforced coating comprises the following steps:
the liquid material comprises the following components: adding the acrylic emulsion A, the acrylic emulsion B and water into a reaction kettle, stirring for 30min at the rotating speed of 200r/min, adding the nano water-based acrylic emulsion, the non-ionic water-based silane-siloxane emulsion, the film forming auxiliary agent and the anticorrosive bactericide, stirring for 45min at the rotating speed of 250r/min, adding the defoaming agent, continuously stirring for 12min at the rotating speed of 300r/min, and standing for 10 min;
the powder comprises the following components: adding cement, coarse whiting and quartz sand into a dry powder mixer, mixing and stirring for 15-20 min, adding ethylene/vinyl laurate/vinyl chloride terpolymer rubber powder and modified cellulose ether, and continuously stirring for 10-15 min;
and uniformly mixing the liquid material component and the powder material component according to the proportion to obtain the waterproof reinforced coating.
The construction method of the multifunctional waterproof reinforced coating comprises the following steps:
s1: treating a base surface, namely cleaning impurities and dirt on the surface to be coated, and keeping the surface to be coated clean and dry;
s2: coating, namely mixing the liquid material component and the powder material component according to the mass ratio of 1:3.25, and uniformly stirring by using a mechanical stirrer to form a mixed coating; uniformly coating the mixture on the bonding surface of the cement-based grindstone by adopting a brushing mode, and coating once; the surface drying time of the coating at normal temperature (16-25 ℃) is 0.75-1 h, and the actual drying time is 1-1.5 h; the surface drying time at low temperature (5-15 ℃) is 1-1.25 h, and the actual drying time is 1.5-2 h; the surface drying time at high temperature (26-35 ℃) is 0.5-0.75 h, and the actual drying time is 1-1.5 h; the total thickness of the coating is 0.4-0.5 mm, and the dosage is 0.6-0.7 kg.
Example 4: the multifunctional waterproof reinforced coating consists of a liquid material component and a powder material component in a weight ratio of 1:2.5, wherein the liquid material component comprises the following raw materials in parts by weight: 35 parts of acrylic emulsion A, 15 parts of acrylic emulsion B, 10 parts of nano water-based acrylic emulsion, 3.2 parts of non-ionic water-based silane-siloxane emulsion, 0.4 part of antiseptic bactericide, 0.4 part of defoaming agent, 4 parts of film forming assistant and 32 parts of water, wherein the powder component comprises the following raw materials in parts by weight: 37 parts of cement, 25 parts of heavy calcium carbonate, 36.8 parts of quartz sand, 1.2 parts of ethylene/vinyl laurate/vinyl chloride terpolymer rubber powder and 0.1 part of modified cellulose ether.
In the liquid material components, the butylbenzene emulsion is a non-ionic emulsifier system, a carboxylic butylbenzene copolymer emulsion with hydrolysis resistance has the viscosity of 100-500 mPa & s and the pH of 7-11, has good compatibility with cementing materials such as cement and the like, has the solid content of 45-50%, and can remarkably improve the bonding strength of the system; preferably, the present invention uses Xinte Ma 29Y57 or Shengxi ao M3618.
The acrylic emulsion A is styrene/acrylic acid copolymer emulsion and a polymer formed by copolymerizing styrene/acrylic acid, forms a chemical bond with the base material, has the solid content of 45-50%, and remarkably improves the bonding strength of the base material; the emulsion has small particles, the particle size is 0.1-0.2 mu m, the formed film is compact, and the compactness of the system can be improved; preferably, badefh FS6607 is used in the present invention.
The acrylic emulsion B is an environment-friendly acrylic polymer, has high emulsion solid content of over 55 percent, small emulsion particles with the particle size of 0.25-0.35 mu m, compact film formation, excellent flexibility, water resistance and alkali resistance, and can play a role in improving the crack resistance, water impermeability and the like of a system; preferably, the present invention uses badfu FS320A or dow TM 2012.
The particle size of the particles in the nano water-based acrylic emulsion is 20-40 nm, and the nano water-based acrylic emulsion has super-strong permeability and excellent wettability; preferably, the present invention uses the Xin damar PR 3500.
The active ingredients in the non-ionic water-based silane-siloxane emulsion contain alkoxy silane and polydimethylsiloxane, the content of the active ingredients reaches 40%, the active ingredients can deeply permeate to perform chemical reaction with masonry or cement-based materials, and the absorption of water by capillary holes is resisted, so that a lasting hydrophobic effect is generated; preferably, the present invention uses dow corning IE6683 or wacker BS 1802.
The antiseptic bactericide has broad-spectrum bactericidal effect on bacteria (including formaldehyde-resistant strains), mould, yeast and algae, can be quickly mixed and dissolved with aqueous solution, and does not contain environmental pollutants such as formaldehyde and the like; preferably, Langshan Preventol D7 is used in the present invention.
The defoamer belongs to a water-based emulsion defoamer, does not contain mineral oil, and is used for eliminating physical and chemical foaming and pinholes in the coating film forming process; preferably, the invention uses either basf SI2293 or hainshan AP 7072.
The film-forming assistant is helpful for wetting and dispersing the pigment and the filler, can promote the plastic flow and the elastic change of polymer particles in the emulsion, can effectively reduce the film-forming temperature of the polymer emulsion, and can form a film in a wider temperature range; preferably, the present invention uses Iseman TEXANOL 12-ester alcohol.
In the powder component, the cement is ordinary portland cement; preferably, the present invention uses p.w42.5 grade white portland cement.
The heavy calcium carbonate is used as a filler, so that the coating has the characteristics of no sedimentation, easy dispersion, good gloss and the like; preferably, the present invention uses 325 mesh heavy calcium carbonate.
In the quartz sand, the mass ratio of the particle size of 40-80 meshes is 20-40%, and the mass ratio of the particle size of 80-120 meshes is 60-80%.
The ethylene/vinyl laurate/vinyl chloride ternary copolymer rubber powder has high solid content which reaches 98-100%, can remarkably improve the heat resistance and freeze-thaw cycle resistance of a system, and simultaneously improves the adhesion, bending strength, plasticity, wear resistance and construction performance; the hydrophobic property of the coating can be improved, the absorption of moisture is reduced, and liquid water is prevented from permeating into the coating through the surface of the coating or the capillary action; preferably, tile 8034H hydrophobic type rubber powder is used in the invention.
The modified cellulose ether is quick-fusible in cold water, has the viscosity of 40000 mPa & s, can be adsorbed on the surface of emulsion particles to form a coating layer, and plays a role in increasing the viscosity and improving the construction operability by increasing the volume of the emulsion particles; preferably, the present invention uses Tianpu MH4005 or MH 4019N.
The preparation method of the multifunctional waterproof reinforced coating comprises the following steps:
the liquid material comprises the following components: adding the acrylic emulsion A, the acrylic emulsion B and water into a reaction kettle, stirring for 30min at the rotating speed of 200r/min, adding the nano water-based acrylic emulsion, the non-ionic water-based silane-siloxane emulsion, the film forming auxiliary agent and the anticorrosive bactericide, stirring for 45min at the rotating speed of 250r/min, adding the defoaming agent, continuously stirring for 12min at the rotating speed of 300r/min, and standing for 10 min;
the powder comprises the following components: adding cement, coarse whiting and quartz sand into a dry powder mixer, mixing and stirring for 15-20 min, adding ethylene/vinyl laurate/vinyl chloride terpolymer rubber powder and modified cellulose ether, and continuously stirring for 10-15 min;
and uniformly mixing the liquid material component and the powder material component according to the proportion to obtain the waterproof reinforced coating.
The construction method of the multifunctional waterproof reinforced coating comprises the following steps:
s1: treating a base surface, namely cleaning impurities and dirt on the surface to be coated, and keeping the surface to be coated clean and dry;
s2: coating, namely mixing the liquid material component and the powder material component according to the mass ratio of 1:2.5, and uniformly stirring by using a mechanical stirrer to form a mixed coating; uniformly coating the wet concrete base surface by adopting a roll coating mode, and coating for three times (the coating can be carried out for the last time after the previous time is completely dried, and the coating for the previous time and the coating for the next time are in a cross direction); the surface drying time of the coating at normal temperature (16-25 ℃) is 1.0-1.25 h, and the actual drying time is 1.5-2 h; the surface drying time at low temperature (5-15 ℃) is 1.25-1.5 h, and the actual drying time is 2-2.5 h; the surface drying time at high temperature (26-35 ℃) is 0.75-1.0 h, and the actual drying time is 1.5-2 h; the total thickness of the coating is 0.8-1.0 mm, and the dosage is 1.2-1.5 kg.
Example 5: the multifunctional waterproof reinforced coating consists of a liquid material component and a powder material component in a weight ratio of 1:3, wherein the liquid material component comprises the following raw materials in parts by weight: 10 parts of butylbenzene emulsion, 20 parts of acrylic emulsion A, 18 parts of acrylic emulsion B, 18 parts of nano water-based acrylic emulsion, 5 parts of non-ionic water-based silane-siloxane emulsion, 0.5 part of antiseptic bactericide, 0.5 part of defoaming agent, 3 parts of film-forming assistant and 25 parts of water, wherein the powder component comprises the following raw materials in parts by weight: 32 parts of cement, 34 parts of heavy calcium carbonate, 32.3 parts of quartz sand, 1.7 parts of ethylene/vinyl laurate/vinyl chloride terpolymer rubber powder and 0.05 part of modified cellulose ether.
In the liquid material components, the butylbenzene emulsion is a non-ionic emulsifier system, a carboxylic butylbenzene copolymer emulsion with hydrolysis resistance has the viscosity of 100-500 mPa & s and the pH of 7-11, has good compatibility with cementing materials such as cement and the like, has the solid content of 45-50%, and can remarkably improve the bonding strength of the system; preferably, the present invention uses Xinte Ma 29Y57 or Shengxi ao M3618.
The acrylic emulsion A is styrene/acrylic acid copolymer emulsion and a polymer formed by copolymerizing styrene/acrylic acid, forms a chemical bond with the base material, has the solid content of 45-50%, and remarkably improves the bonding strength of the base material; the emulsion has small particles, the particle size is 0.1-0.2 mu m, the formed film is compact, and the compactness of the system can be improved; preferably, badefh FS6607 is used in the present invention.
The acrylic emulsion B is an environment-friendly acrylic polymer, has high emulsion solid content of over 55 percent, small emulsion particles with the particle size of 0.25-0.35 mu m, compact film formation, excellent flexibility, water resistance and alkali resistance, and can play a role in improving the crack resistance, water impermeability and the like of a system; preferably, the present invention uses badfu FS320A or dow TM 2012.
The particle size of the particles in the nano water-based acrylic emulsion is 20-40 nm, and the nano water-based acrylic emulsion has super-strong permeability and excellent wettability; preferably, the present invention uses the Xin damar PR 3500.
The active ingredients in the non-ionic water-based silane-siloxane emulsion contain alkoxy silane and polydimethylsiloxane, the content of the active ingredients reaches 40%, the active ingredients can deeply permeate to perform chemical reaction with masonry or cement-based materials, and the absorption of water by capillary holes is resisted, so that a lasting hydrophobic effect is generated; preferably, the present invention uses dow corning IE6683 or wacker BS 1802.
The antiseptic bactericide has broad-spectrum bactericidal effect on bacteria (including formaldehyde-resistant strains), mould, yeast and algae, can be quickly mixed and dissolved with aqueous solution, and does not contain environmental pollutants such as formaldehyde and the like; preferably, Langshan Preventol D7 is used in the present invention.
The defoamer belongs to a water-based emulsion defoamer, does not contain mineral oil, and is used for eliminating physical and chemical foaming and pinholes in the coating film forming process; preferably, the invention uses either basf SI2293 or hainshan AP 7072.
The film-forming assistant is helpful for wetting and dispersing the pigment and the filler, can promote the plastic flow and the elastic change of polymer particles in the emulsion, can effectively reduce the film-forming temperature of the polymer emulsion, and can form a film in a wider temperature range; preferably, the present invention uses Iseman TEXANOL 12-ester alcohol.
In the powder component, the cement is ordinary portland cement; preferably, the present invention uses p.w42.5 grade white portland cement.
The heavy calcium carbonate is used as a filler, so that the coating has the characteristics of no sedimentation, easy dispersion, good gloss and the like; preferably, the present invention uses 325 mesh heavy calcium carbonate.
In the quartz sand, the mass ratio of the particle size of 40-80 meshes is 20-40%, and the mass ratio of the particle size of 80-120 meshes is 60-80%.
The ethylene/vinyl laurate/vinyl chloride ternary copolymer rubber powder has high solid content which reaches 98-100%, can remarkably improve the heat resistance and freeze-thaw cycle resistance of a system, and simultaneously improves the adhesion, bending strength, plasticity, wear resistance and construction performance; the hydrophobic property of the coating can be improved, the absorption of moisture is reduced, and liquid water is prevented from permeating into the coating through the surface of the coating or the capillary action; preferably, tile 8034H hydrophobic type rubber powder is used in the invention.
The modified cellulose ether is quick-fusible in cold water, has the viscosity of 40000 mPa & s, can be adsorbed on the surface of emulsion particles to form a coating layer, and plays a role in increasing the viscosity and improving the construction operability by increasing the volume of the emulsion particles; preferably, the present invention uses Tianpu MH4005 or MH 4019N.
The preparation method of the multifunctional waterproof reinforced coating comprises the following steps:
the liquid material comprises the following components: adding the butylbenzene emulsion, the acrylic emulsion A, the acrylic emulsion B and water into a reaction kettle, stirring for 30min at the rotating speed of 200r/min, then adding the nano water-based acrylic emulsion, the non-ionic water-based silane-siloxane emulsion, the film-forming assistant and the anticorrosive bactericide, stirring for 45min at the rotating speed of 250r/min, then adding the defoaming agent, continuing stirring for 12min at the rotating speed of 300r/min, and standing for 10 min;
the powder comprises the following components: adding cement, coarse whiting and quartz sand into a dry powder mixer, mixing and stirring for 15-20 min, adding ethylene/vinyl laurate/vinyl chloride terpolymer rubber powder and modified cellulose ether, and continuously stirring for 10-15 min;
and uniformly mixing the liquid material component and the powder material component according to the proportion to obtain the waterproof reinforced coating.
The construction method of the multifunctional waterproof reinforced coating comprises the following steps:
s1: treating a base surface, namely cleaning impurities and dirt on the surface to be coated, and keeping the surface to be coated clean and dry;
s2: and (3) coating, namely mixing the liquid material component and the powder material component according to the mass ratio of 1:3, and uniformly stirring by using a mechanical stirrer to form the mixed coating. And uniformly coating the base surface of the wet cement mortar by adopting a high-pressure airless spraying mode for three times (the coating can be carried out after the previous drying, and the coating in the previous and subsequent two times is in a cross direction). The surface drying time of the coating at normal temperature (16-25 ℃) is 0.75-1 h, and the actual drying time is 1-1.5 h; the surface drying time at low temperature (5-15 ℃) is 1-1.25 h, and the actual drying time is 1.5-2 h; the surface drying time at high temperature (26-35 ℃) is 0.5-0.75 h, and the actual drying time is 1-1.5 h. The total thickness of the coating is 0.8-0.9 mm, and the dosage is 1.1-1.3 kg.
TABLE 1 liquid compositions
TABLE 2 powder compositions
The bonding strength and impermeability of examples 1 to 3 and comparative examples 1 to 3 were measured according to the requirements of appendix C of T/CECS 628-2019 Stone pasting engineering Specification, and the results are shown in Table 3.
TABLE 3
According to the test results, it can be found that:
1. by adding the styrene-butadiene emulsion or the acrylic emulsion A, the styrene-butadiene emulsion or the acrylic emulsion A has good compatibility with cementing materials such as cement and the like, and can remarkably improve the compactness of the coating and the bonding strength of the coating to a base material; the tensile bonding strength under the standard condition shows an increasing trend along with the increase of the addition amount;
2. by adding the rubber powder, the heat resistance and freeze-thaw cycle resistance of the coating can be remarkably improved; with the increase of the addition amount, the rate of reduction of the tensile bond strength after heat treatment and freeze-thaw cycling is obviously reduced, while the rate of reduction of the tensile bond strength is the largest in the comparative sample 3 without the addition of the ethylene/vinyl laurate/vinyl chloride ternary copolymer rubber powder;
3. by adding the acrylic emulsion B, the water resistance and alkali resistance of the coating can be obviously improved; the decrease rate of the tensile bond strength after the alkali treatment was significantly decreased with the increase of the addition amount, whereas the decrease rate of the tensile bond strength was the largest in comparative example 2 in which the acrylic emulsion B was not added.
The penetration depth test of examples 1 to 3 and comparative examples 1 to 3 shows the results in terms of the depth of failure of the stone material after the tensile bond strength test, as shown in Table 4.
TABLE 4
| Test items | Example 1 | Example 2 | Example 3 | Comparative sample 1 | Comparative sample 2 | Comparative sample 3 |
| Destruction of stone Depth of field | Internal destruction of stone Depth of 3mm | Internal destruction of stone Depth of 1mm | Internal destruction of stone Depth of 3mm | Surface boundary of stone Face falling off | Internal destruction of stone Depth of 3mm | Internal destruction of stone Depth of 3mm |
According to the test results, it can be found that: by adding the penetrant, the paint has super-strong permeability and excellent wettability, and can be used in combination with the styrene-butadiene emulsion or the acrylic emulsion A to increase the permeability of the paint and improve the bonding strength between the paint and a base material; along with the increase of the addition amount of the penetrating agent, the damage depth of the stone after the tensile bonding strength test shows an increasing trend, and the phenomenon of the falling off of the surface interface of the stone occurs in the comparative sample 1 without the penetrating agent.
The impermeability tests of examples 1-3 and comparative examples 1-3 were performed according to the requirements of appendix A in T/CECS 628-2019 technical Specification for Stone pasting engineering, and the results are shown in Table 5.
TABLE 5
| Test items | Performance index | Example 1 | Example 2 | Example 3 | Comparative sample 1 | Comparative sample 2 | Comparative sample 3 |
| Impermeability (500 mm water) Column, 24 h) | No water seepage and deformation Color phenomena | No water seepage and deformation Color phenomena | No water seepage and deformation Color phenomena | No water seepage and deformation Color phenomena | No water seepage and deformation Color phenomena | Water seepage and transformation occur Color phenomena | No water seepage and deformation Color phenomena |
According to the test results, it can be found that: by adding the acrylic emulsion B, the water resistance, alkali resistance and water impermeability of the coating can be obviously improved. In the control 2 without the acrylic emulsion B, water permeation and discoloration were observed in the impermeability test (500 mm water, 24 hours).
The results of the surface hydrophobicity tests of examples 1 to 3 and comparative examples 1 to 3 are shown in Table 6.
TABLE 6
| Test items | Performance index | Example 1 | Example 2 | Example 3 | Comparative sample 1 | Comparative sample 2 | Comparative sample 3 |
| Surface hydrophobicity Property of (2) | The water drop on the surface of the coating cannot penetrate, Diffusion | Non-permeation and expansion Powder medicine | Does not permeate, diffuse and appear dew Effect | Does not permeate, diffuse and appear dew Effect | Non-permeation and expansion Powder medicine | Non-permeation and expansion Powder medicine | Slowly permeate and expand Powder medicine |
According to the test results, it can be found that: by adding the waterproof agent, the water absorption of paint capillary pores can be obviously reduced, and a durable surface hydrophobic effect is generated along with the increase of the addition amount. In the comparative sample 3, in which no water repellent was added, a slow diffusion phenomenon occurred after dripping water on the surface.
The flexibility tests of examples 1 to 3 and comparative examples 1 to 3 were carried out as required by JC/T2090-2011 Polymer Cement waterproof slurry, and the results are shown in Table 7.
TABLE 7
According to the test results, it can be found that: by adding the acrylic emulsion B, the flexibility of the coating can be obviously improved, and the possibility of deformation and cracking is reduced. In comparative example 2 in which no acrylic emulsion B was added, cracks appeared on the surface of the coating after the test.
Examples 4 to 5 and comparative examples 1 and 4 were tested for their adhesive strength to wet base layers, which were a concrete base layer and a mortar base layer, respectively, and the results are shown in table 8.
TABLE 8
According to the test results, it can be found that: the bonding strength of the coating can be remarkably improved by adding the styrene-butadiene emulsion or the acrylic emulsion A; by adding the penetrant, the coating has super-strong permeability and excellent wettability, and can promote the improvement of bonding strength. Wherein, the comparative sample 4 without adding the butylbenzene emulsion and the acrylic emulsion A has reduced bonding strength with a wet base layer, and the coating has a local shell phenomenon; meanwhile, the styrene-butadiene emulsion, the acrylic emulsion A and the penetrating agent are not added in the comparative sample 1, so that the bonding strength with a wet base layer is obviously reduced, and the coating obviously appears the phenomena of shell formation and shedding.
The alkali back-flow resistance tests of examples 4 to 5 and comparative examples 2 and 5 were carried out on a concrete base layer and a mortar base layer, respectively, according to the requirements of JG/T210-.
TABLE 9
According to the test results, it can be found that: by adding the acrylic emulsion B and the ethylene/vinyl laurate/vinyl chloride ternary copolymer rubber powder, the water resistance and alkali resistance of the coating can be remarkably improved by the acrylic emulsion B, the water absorption of the material can be greatly reduced by the ethylene/vinyl laurate/vinyl chloride ternary copolymer rubber powder through alkali activation, and the possibility of alkali return is reduced. Wherein, the control sample 2 without the acrylic emulsion B has punctate discoloration phenomenon and reduced alkali resistance; meanwhile, the control sample 5 which is not added with the acrylic emulsion B and the ethylene/vinyl laurate/vinyl chloride terpolymer rubber powder has the flaky discoloration phenomenon, and the alkali return resistance is obviously reduced.
In conclusion, after the coating formed by compounding the liquid material component and the powder material component is applied to the surface of the stone to form a protective coating, the coating has no permeation and diffusion phenomenon during surface hydrophobic test, and has no water seepage and color change phenomenon during impermeability test under the water column of 500mm for 24 hours, and has good water repellency and impermeability; meanwhile, the protective coating is tightly combined with the stone, the damage depth inside the stone reaches 3mm after the stone is subjected to drawing damage, the protective coating has excellent compatibility with cementing materials such as cement, the tensile bonding strength reaches 3.5MPa under the standard condition, and the tensile bonding strength can still be maintained at 2.8MPa even after the stone is subjected to heat, alkaline water and freeze-thaw cyclic treatment; the good water repellency and impermeability and the interface bonding strength ensure that the waterproof reinforced coating disclosed by the invention not only has excellent waterproof capability in a short time, but also has the waterproof property of maintaining the waterproof capability in long-term wading and severe environments.
In addition, on the one hand, the protective coating that the coating formed is big with cementitious materials such as stone material and cement bonding strength, even the stone material appears the crackle and produces stress, also hardly tears the destruction coating, and then influences its integrality, and on the other hand, through the pliability test, protective coating all does not have the crackle, has good pliability, can utilize the stress strain of the flexible strain buffering stone material of own for protective coating's protective properties can not receive the influence because of reasons such as stone material fracture.
In addition, based on an emulsion system, by adding the nano water-based acrylic emulsion and the ethylene/vinyl laurate/vinyl chloride terpolymer rubber powder, even if the coating disclosed by the invention is used on a wet base layer, the protective coating is firmly bonded, has no phenomena of peeling and falling, has several alkali return resistance, and obviously improves the water resistance and alkali resistance of the coating.
In addition, the quartz sand with the particle size of 40-80 meshes and the particle size of 80-120 meshes is selected for compounding, the compactness of the protective coating is improved, the water impermeability and the coating strength are enhanced, and the waterproof and durable performances of the coating are further improved by optimizing the particle size distribution and the mass ratio of the quartz sand.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (8)
1. The multifunctional waterproof reinforced coating is characterized by comprising a liquid material component and a powder material component in a weight ratio of 1: 4-1: 1, wherein the liquid material component comprises the following raw materials in parts by weight: 10-40 parts of butylbenzene emulsion and/or 20-35 parts of acrylic emulsion A, 10-20 parts of acrylic emulsion B, 10-20 parts of nano water-based acrylic emulsion, 2-3 parts of non-ionic water-based silane-siloxane emulsion, 0.1-0.5 part of anticorrosive bactericide, 0.1-0.5 part of defoaming agent, 2-5 parts of film forming auxiliary agent and 25-40 parts of water, wherein the powder material component comprises the following raw materials in parts by weight: 30-40 parts of cement, 25-40 parts of heavy calcium carbonate, 25-40 parts of quartz sand, 1-2 parts of ethylene/vinyl laurate/vinyl chloride ternary copolymer rubber powder and 0.05-0.1 part of modified cellulose ether.
2. The multifunctional waterproof reinforced coating as claimed in claim 1, wherein the styrene-butadiene emulsion is a carboxylated styrene-butadiene copolymer emulsion, the viscosity is 100 to 500mPa · s, the pH is 7 to 11, the solid content of the emulsion is 45 to 50%, the acrylic emulsion A is a styrene/acrylic copolymer emulsion, the solid content of the emulsion is 45 to 50%, and the particle size in the emulsion is 0.1 to 0.2 μm;
or the butylbenzene emulsion is carboxylic butylbenzene copolymer emulsion, the viscosity is 100-500 mPa & s, the pH is 7-11, and the solid content of the emulsion is 45-50%;
or the acrylic emulsion A is styrene/acrylic copolymer emulsion, the solid content of the emulsion is 45-50%, and the particle size of particles in the emulsion is 0.1-0.2 mu m.
3. The multifunctional waterproof reinforced coating of claim 1, wherein the acrylic emulsion B has an emulsion solid content of more than 55%, and the particle size of the particles in the emulsion is 0.25-0.35 μm.
4. The super water-resistant adhesion enhancer as claimed in claim 1, wherein the particle size of the nano water-based acrylic emulsion is 20-40 nm.
5. The multifunctional waterproof reinforcing coating material according to claim 1, wherein the viscosity of the modified cellulose ether is 40000 mPa-s.
6. The multifunctional waterproof reinforced coating material of claim 1, wherein the quartz sand has a particle size of 40 to 80 mesh in 20 to 40% by mass and a particle size of 80 to 120 mesh in 60 to 80% by mass.
7. A method for preparing the multifunctional waterproof reinforcing coating material according to any one of claims 1 to 6,
the liquid material comprises the following components: adding the butylbenzene emulsion and/or acrylic emulsion A, the acrylic emulsion B and water into a reaction kettle, stirring for 30min at the rotating speed of 200r/min, then adding the nano water-based acrylic emulsion, the non-ionic water-based silane-siloxane emulsion, the film forming assistant and the anticorrosive bactericide, stirring for 30-60 min at the rotating speed of 250r/min, then adding the defoaming agent, continuing stirring for 10-15 min at the rotating speed of 300r/min, and standing for 10 min;
the powder comprises the following components: adding cement, coarse whiting and quartz sand into a dry powder mixer, mixing and stirring for 15-20 min, adding ethylene/vinyl laurate/vinyl chloride terpolymer rubber powder and modified cellulose ether, and continuously stirring for 10-15 min;
and uniformly mixing the liquid material component and the powder material component according to the proportion to obtain the waterproof reinforced coating.
8. A construction method of the multifunctional waterproof reinforced paint of any one of claims 1 to 6, characterized by comprising the following steps:
s1: treating a base surface, namely cleaning impurities and dirt on the surface to be coated, and keeping the surface to be coated clean and dry;
s2: and (3) construction and painting, namely uniformly mixing the liquid material component and the powder material component according to the weight ratio of 1: 4-1: 1 in an operation site to form a coating, and uniformly coating the coating on a surface to be painted.
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| CN113337163A (en) * | 2021-07-05 | 2021-09-03 | 林银河 | Multifunctional high-hardness and high-waterproofness paint and preparation process thereof |
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| CN115141518A (en) * | 2022-07-29 | 2022-10-04 | 苏州金螳螂建筑装饰股份有限公司 | Two-component polymer cement waterproof coating and preparation method and application thereof |
| CN115785715A (en) * | 2022-12-15 | 2023-03-14 | 武汉市浩盛特种建材有限责任公司 | Super-weather-resistant anticorrosive waterproof multipurpose material and preparation method and application thereof |
| CN115820062A (en) * | 2022-08-02 | 2023-03-21 | 济南大学 | Waterproof, anti-permeability and high-toughness thin spray material and preparation method and application thereof |
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| CN115873435A (en) * | 2022-12-15 | 2023-03-31 | 宏源防水科技集团有限公司 | Polymer cement waterproof coating and preparation process thereof |
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| CN115873435B (en) * | 2022-12-15 | 2023-09-01 | 宏源防水科技集团有限公司 | Polymer cement waterproof paint and preparation process thereof |
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