CN110564269A - Concrete protective agent and preparation method thereof - Google Patents
Concrete protective agent and preparation method thereof Download PDFInfo
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- CN110564269A CN110564269A CN201910767116.0A CN201910767116A CN110564269A CN 110564269 A CN110564269 A CN 110564269A CN 201910767116 A CN201910767116 A CN 201910767116A CN 110564269 A CN110564269 A CN 110564269A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5053—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials non-oxide ceramics
- C04B41/5057—Carbides
- C04B41/5059—Silicon carbide
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5053—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials non-oxide ceramics
- C04B41/5062—Borides, Nitrides or Silicides
- C04B41/5066—Silicon nitride
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/60—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
- C04B41/61—Coating or impregnation
- C04B41/65—Coating or impregnation with inorganic materials
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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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
- C09D163/10—Epoxy resins modified by unsaturated compounds
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/004—Reflecting paints; Signal paints
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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
-
- 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
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
Abstract
The concrete protective agent has stronger abrasion resistance, simultaneously effectively improves the bonding surface of pervious concrete and an organic protective agent, can effectively avoid or reduce the phenomena of surface abrasion and particle falling caused by overlarge local friction of heavier vehicle load or too low bonding strength between surface course coarse aggregates in the using process, simultaneously diffusely reflects partial near infrared light and the like through a cooling material, reduces the absorption of heat, reduces the temperature of a road surface and further relieves the urban heat island effect.
Description
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to a concrete protective agent and a preparation method thereof.
Background
At present, on the one hand, urban flood disasters are serious due to rapid development of urbanization construction, China proposes and calls for construction of 'sponge cities', and as key materials of the sponge cities, pervious concrete also develops rapidly. Due to the special structure of the pervious concrete, large pores exist in the pervious concrete and on the surface of the pervious concrete, and under the action of load, stress concentration is easy to occur at the tips of the pores, so that the cracks are damaged and expanded. In the practical application process, a series of problems such as surface layer particle falling, cracking, damage and the like can be caused, and the particle falling problem is more prominent under the action of dynamic load and overlarge local friction force (such as sudden braking of a vehicle). Therefore, the pervious concrete is mainly applied to paving low-load and low-speed roads such as parking lots, parks, sidewalks and the like, and the application universality of the pervious concrete is greatly limited.
on the other hand, after more and more impervious pavements are covered with native soil, surface runoff is rapidly increased, and the underground water level is gradually reduced, so that the water circulation capacity of the city is weakened; the heat capacity of the concrete pavement is far smaller than that of soil, the urban surface is in a high-temperature state for a long time, so that the urban heat island effect is prominent, the urban power supply is insufficient in summer, and the electricity utilization is limited by residents and factories.
Disclosure of Invention
the invention aims to overcome the general technical problems encountered in the popularization and application processes of the existing pervious concrete and effectively relieve the urban heat island effect, and provides a concrete protective agent and a preparation method thereof.
in order to achieve the purpose, the invention adopts the technical scheme that:
The invention provides a concrete protective agent which comprises the following components in parts by weight: 40-60 parts of resin, 5-15 parts of wear-resistant agent, 8-25 parts of cooling agent, 5-10 parts of diluent, 0.1-0.3 part of dispersing agent, 0.1-0.3 part of defoaming agent, 5-25 parts of curing agent and 0.03-0.1 part of accelerator.
Preferably, the concrete protective agent comprises the following components: 45-55 parts of resin, 8-13 parts of wear-resistant agent, 10-20 parts of cooling agent, 6-9 parts of diluent, 0.2-0.3 part of dispersing agent, 0.2-0.3 part of defoaming agent, 7-20 parts of curing agent and 0.04-0.08 part of accelerator.
More preferably, the concrete protectant comprises the following components: 50 parts of resin, 13 parts of anti-corrosion agent, 12 parts of cooling agent, 8 parts of diluent, 0.25 part of dispersing agent, 0.25 part of defoaming agent, 15 parts of curing agent and 0.06 part of accelerator.
Preferably, the resin is selected from liquid epoxy resins, preferably epoxy (meth) acrylate epoxy resins.
Preferably, the acid value of the resin is 3.0-5.0 mgKOH/g, and the epoxy value is 0.01-0.22 eq/100 g. Compared with common resin, the acrylic epoxy resin has strong adhesive force, good chemical stability, operation manufacturability of unsaturated resin, capability of being cured at normal temperature, small curing shrinkage rate, and excellent acid resistance, alkali resistance and oxidation resistance.
Preferably, the wear resistant agent is selected from silicon nitride or silicon carbide.
Preferably, the abrasion-resistant agent is an atomic crystal, the Mohs hardness of the abrasion-resistant agent is 9-10, and the particle size of the abrasion-resistant agent is 1-3 μm. The abrasion-resistant agent has the advantages of good lubricity, uniform structure, high mechanical strength, wear resistance, good thermal shock resistance, good high-temperature oxidation resistance and small particle diameter, and can effectively improve the micro interface between the pervious concrete and the organic protective agent, thereby improving the bonding strength between the protective agent and the pervious concrete and reducing the abrasion and the peeling of the protective agent.
preferably, the cooling agent is solid or hollow glass beads, and the particle size of the cooling agent is 5-30 microns.
preferably, the temperature reducing agent is selected from hollow glass beads. The hollow glass beads have good sphericity, can reduce the viscosity and internal stress of the product, and have good fluidity; because the diameter of the micro-bead and the wavelength of the near infrared light are in the same order of magnitude, the near infrared light reflection can be realized to the maximum extent, and the heat absorption of the pervious concrete pavement is actively reduced; in addition, the concrete has the characteristics of heat insulation, high temperature resistance and high strength, and is beneficial to adjusting the temperature of the pervious concrete pavement and ensuring the abrasion resistance in the using process.
preferably, the diluent is selected from propylene oxide propylene ethers, propylene oxide butyl ethers, alkylene glycidyl ethers, toluene glycidyl ethers or castor oil polyglycidyl ethers. The diluent is an active diluent, has low toxicity and low volatility or non-volatility compared with a non-active diluent, has excellent material environmental protection performance, and is very effective in reducing the viscosity of epoxy resin.
Preferably, the dispersant is selected from polyurethane, which is a block copolymeric polyurethane, polyacrylate, which is a long chain polyacrylate, or solsperse.
Preferably, the antifoaming agent is selected from polyoxypropylene glycerol ether, polyoxypropylene polyoxyethylene glycerol ether or polydimethylsiloxanes; the polydimethylsiloxanes are polysiloxanes. The polysiloxane can play a good role in inhibiting foaming.
Preferably, the curing agent is selected from aliphatic polyamine, alicyclic polyamine, and low molecular weight polyamide curing agent.
preferably, the curing agent is selected from diethylenetriamine or triethylenetetramine or low molecular weight polyamides.
Preferably, the low molecular weight polyamide is a 203, 304, 651 low molecular weight polyamide.
Preferably, the promoter is selected from DMP-30.
Preferably, the concrete protectant further comprises a synergist selected from phthalocyanine blue derivatives or benzidine yellow derivatives. Phthalocyanine blue derivatives suitable for phthalocyanine pigments (organic blue, organic green) and carbon black; the benzidine yellow derivative is applied to diaryl pigments (organic yellow and organic red) and C.I pigment green 36, and is matched for use when the pigment is added.
Further, the invention provides a preparation method of the concrete protective agent, which comprises the following steps:
Step 1, stirring the resin by using a high-speed dispersion machine, adding a diluent, an abrasion-resistant agent and a cooling agent, continuously stirring at high speed to obtain a mixture, and grinding the mixture by using a sand mill until the granularity is less than or equal to 15 mu m; adding a dispersing agent and a defoaming agent to obtain a finished product A;
Step 2, stirring and dispersing the curing agent, the diluent, the accelerator, the dispersant and the defoamer at a high speed to prepare a finished product B;
and 3, mixing the finished product A and the finished product B according to the weight ratio of the resin to the curing agent of 4.5: 1-5.5: 1 to prepare the concrete protective agent.
Preferably, the resin is 40-60 parts by mass and is selected from epoxy (methyl) acrylate epoxy resin.
Preferably, the acid value of the resin is 2.0-5.0 mgKOH/g, and the epoxy value is 0.01-0.22 eq/100 g.
Preferably, the mass portion of the wear-resistant agent is 5-15 parts, and the wear-resistant agent is selected from silicon nitride or silicon carbide.
Preferably, the abrasion-resistant agent is an atomic crystal, the Mohs hardness of the abrasion-resistant agent is 9-10, and the particle size of the abrasion-resistant agent is 1-3 μm. Preferably, the mass portion of the cooling agent is 10-25 parts, and the cooling agent is solid or hollow glass beads with the particle size of 5-30 μm.
preferably, the temperature reducing agent is selected from hollow glass beads.
Preferably, the diluent is selected from propylene oxide propylene ethers, propylene oxide butyl ethers, alkylene glycidyl ethers, toluene glycidyl ethers or castor oil polyglycidyl ethers; in the step 1, the mass part of the diluent is 4-8; in the step 2, the mass part of the diluent is 1-2.
Preferably, the mass part of the dispersing agent is 0.1-0.3 part, the dispersing agent is selected from polyurethane, polyacrylate or solsperse, the polyurethane is block copolymerized polyurethane, and the polyacrylate is long-chain polyacrylate.
In some preferred embodiments of the present invention, the dispersant is present in an amount of 0.1 parts, 0.2 parts, or 0.3 parts by mass.
preferably, the mass portion of the defoaming agent is 0.1-0.3, and the defoaming agent is selected from polyoxypropylene glycerol ether, polyoxypropylene polyoxyethylene glycerol ether or polydimethylsiloxane; the polydimethylsiloxanes are selected from polysiloxanes.
In some preferred embodiments of the present invention, the defoaming agent is 0.1 part, 0.2 part, or 0.3 part by mass.
Preferably, the mass portion of the curing agent is 10-15 parts, and the curing agent is selected from aliphatic amine or alicyclic amine curing agents or low molecular weight polyamide.
Preferably, the low molecular weight polyamide is selected from 203, 304, 651 low molecular weight polyamide.
Preferably, the mass portion of the accelerator is 0.03-0.1 part, and the accelerator is selected from DMP-30.
Compared with the prior art, the invention has the beneficial effects that:
the pervious concrete protective agent has low viscosity, can be cured at normal temperature, is simple to construct and convenient to spray, and the used raw materials are non-volatile or low in volatility, are non-toxic or low in toxicity, and have good operating environment for constructors.
The cooling agent is added in the product, so that the product has a strong reflection function on near infrared light, the heat absorption of the pervious concrete pavement is actively reduced, and the urban heat island effect can be effectively reduced.
The abrasion-resistant agent and the cooling agent in the product have the characteristics of difficult heat transfer, high temperature resistance, high strength and abrasion resistance, are beneficial to ensuring the abrasion resistance of a permeable concrete protective layer and a pavement in the using process, and the addition of the abrasion-resistant agent effectively improves the micro interface of the protective agent and the permeable concrete, thereby improving the bonding strength of the protective agent. The application range of the pervious concrete can be popularized from static loads or low-speed loads of parks, pedestrian walks, parking lots and the like to pavement structures of dynamic load light traffic and the like, and the application universality of the pervious concrete is promoted.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of implementation in many different ways than those herein set forth and of similar import by those skilled in the art without departing from the spirit of this application and is therefore not limited to the specific implementations disclosed below.
The embodiment of the invention provides a concrete protective agent which comprises the following components in parts by weight: 40-60 parts of resin, 5-15 parts of wear-resistant agent, 8-25 parts of cooling agent, 5-10 parts of diluent, 0.1-0.3 part of dispersing agent, 0.1-0.3 part of defoaming agent, 5-25 parts of curing agent and 0.03-0.1 part of accelerator.
In some embodiments, the resin is present in an amount of 40 parts, 42 parts, 43 parts, 45 parts, 48 parts, 50 parts, 52 parts, 55 parts, 58 parts, or 60 parts by mass.
In some embodiments, the portion by mass of the abrasion resistant agent is 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, or 15 parts.
in some embodiments, the part by mass of the temperature reducing agent is 8 parts, 9 parts, 10 parts, 12 parts, 14 parts, 15 parts, 17 parts, 18 parts, 20 parts, 21 parts, 22 parts, 23 parts, 24 parts, or 25 parts.
in some embodiments, the diluent is 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, or 10 parts by mass.
In some embodiments, the dispersant is present in an amount of 0.1 parts, 0.2 parts, or 0.3 parts by weight.
In some embodiments, the defoamer is present in an amount of 0.1 parts, 0.2 parts, or 0.3 parts by mass.
In some embodiments, the curing agent is present in an amount of 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts, 20, 21 parts, 22 parts, 23 parts, 24 parts, or 25 parts by mass.
In some embodiments, the accelerator is present in an amount of 0.03, 0.04, 0.05, 0.06, 0.07, 0.08, 0.09, or 0.1 parts by mass.
In a preferred embodiment of the invention, the resin is selected from epoxy (meth) acrylate epoxy resins.
In a preferred embodiment of the invention, the acid value of the resin is 3.0-5.0 mgKOH/g, and the epoxy value is 0.01-0.22 eq/100 g. Compared with common resin, the acrylic epoxy resin has strong adhesive force, good chemical stability, operation manufacturability of unsaturated resin, capability of being cured at normal temperature, small curing shrinkage rate, and excellent acid resistance, alkali resistance and oxidation resistance.
In a preferred embodiment of the invention, the wear resistant agent is selected from silicon nitride or silicon carbide.
In a preferred embodiment of the invention, the abrasion-resistant agent is an atomic crystal, the Mohs hardness of the abrasion-resistant agent is 9-10, and the particle size of the abrasion-resistant agent is 1-3 μm. The abrasion-resistant agent has the advantages of good lubricity, uniform structure, high mechanical strength, wear resistance, good thermal shock resistance, good high-temperature oxidation resistance and small particle diameter, and can effectively improve the micro interface between the pervious concrete and the organic protective agent, thereby improving the bonding strength between the protective agent and the pervious concrete and reducing the abrasion and the peeling of the protective agent.
In a preferred embodiment of the invention, the cooling agent is solid or hollow glass beads, and the particle size of the cooling agent is 5-30 μm.
In a preferred embodiment of the invention, the cooling agent is selected from hollow glass beads. The hollow glass beads have good sphericity, can reduce the viscosity and internal stress of the product, and have good fluidity; because the diameter of the micro-bead and the wavelength of the near infrared light are in the same order of magnitude, the near infrared light reflection can be realized to the maximum extent, and the heat absorption of the pervious concrete pavement is actively reduced; in addition, the concrete has the characteristics of heat insulation, high temperature resistance and high strength, and is beneficial to adjusting the temperature of the pervious concrete pavement and ensuring the abrasion resistance in the using process.
In a preferred embodiment of the invention, the diluent is selected from propylene oxide propylene ethers, propylene oxide butyl ethers, alkylene glycidyl ethers, toluene glycidyl ethers or castor oil polyglycidyl ethers. The diluent is an active diluent, has low toxicity and low volatility or non-volatility compared with a non-active diluent, has excellent material environmental protection performance, and is very effective in reducing the viscosity of epoxy resin.
In a preferred embodiment of the invention, the dispersant is selected from polyurethane, which is a block copolymeric polyurethane, polyacrylate, which is a long chain polyacrylate, or solsperse.
In a preferred embodiment of the invention, the antifoaming agent is selected from polyoxypropylene glycerol ether, polyoxypropylene polyoxyethylene glycerol ether or polydimethylsiloxanes; the polydimethylsiloxanes are polysiloxanes. The polysiloxane can play a good role in inhibiting foaming.
In a preferred embodiment of the invention, the curing agent is selected from aliphatic or cycloaliphatic amine curing agents or low molecular weight polyamides.
In a preferred embodiment of the invention, the low molecular weight polyamide is a low molecular weight polyamide 203, 304, 651.
In a preferred embodiment of the invention, the promoter is selected from DMP-30.
In a preferred embodiment of the present invention, the concrete protectant further comprises a synergist selected from phthalocyanine blue derivatives or benzidine yellow derivatives. Phthalocyanine blue derivatives suitable for phthalocyanine pigments (organic blue, organic green) and carbon black; the benzidine yellow derivative is applied to diaryl pigments (organic yellow and organic red) and C.I pigment green 36, and is matched for use when the pigment is added.
Further, the embodiment of the invention provides a preparation method of the concrete protective agent, which comprises the following steps:
1) Stirring the resin by using a high-speed dispersion machine, adding a diluent, an abrasion-resistant agent and a cooling agent, continuously stirring at high speed to obtain a mixture, and grinding the mixture to a particle size of less than or equal to 15 microns by using a sand mill; adding a dispersing agent and a defoaming agent to obtain a finished product A;
2) Stirring and dispersing a curing agent, a diluent, an accelerator, a dispersing agent and a defoaming agent at a high speed to prepare a finished product B;
3) And mixing the finished product A and the finished product B according to the weight ratio of the resin to the curing agent of 4.5: 1-5.5: 1 to prepare the concrete protective agent.
in a preferred embodiment of the invention, the resin is 40-60 parts by mass and is selected from epoxy (methyl) acrylate epoxy resin.
In some embodiments, the resin is present in an amount of 40 parts, 42 parts, 43 parts, 45 parts, 48 parts, 50 parts, 52 parts, 55 parts, 58 parts, or 60 parts by mass.
In a preferred embodiment of the invention, the acid value of the resin is 3.0-5.0 mgKOH/g, and the epoxy value is 0.01-0.22 eq/100 g.
In a preferred embodiment of the invention, the mass portion of the wear-resistant agent is 5-15 parts, and the wear-resistant agent is selected from silicon nitride or silicon carbide.
In some embodiments, the portion by mass of the abrasion resistant agent is 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, or 15 parts.
In a preferred embodiment of the invention, the abrasion-resistant agent is an atomic crystal, the Mohs hardness of the abrasion-resistant agent is 9-10, and the particle size of the abrasion-resistant agent is 1-3 μm.
In a preferred embodiment of the invention, the cooling agent is 8-25 parts by mass, and the cooling agent is solid or hollow glass beads with the particle size of 5-30 microns.
In some embodiments, the part by mass of the temperature reducing agent is 8 parts, 10 parts, 12 parts, 14 parts, 15 parts, 17 parts, 18 parts, 20 parts, 21 parts, 22 parts, 23 parts, 24 parts, or 25 parts.
in a preferred embodiment of the invention, the cooling agent is selected from hollow glass beads.
In a preferred embodiment of the present invention, the diluent is selected from propylene oxide propylene ethers, propylene oxide butyl ethers, alkylene glycidyl ethers, toluene glycidyl ethers or castor oil polyglycidyl ethers; in the step 1), the mass part of the diluent is 4-8; in the step 2), the mass part of the diluent is 1-2.
In a preferred embodiment of the invention, the dispersant is 0.1-0.3 part by mass, the dispersant is selected from polyurethane, polyacrylate or solsperse, the polyurethane is block copolymerized polyurethane, and the polyacrylate is long-chain polyacrylate.
In some embodiments, the dispersant is present in an amount of 0.1 parts, 0.2 parts, or 0.3 parts by weight.
In a preferred embodiment of the invention, the mass part of the defoaming agent is 0.1-0.3 part, and the defoaming agent is selected from polyoxypropylene glycerol ether, polyoxypropylene polyoxyethylene glycerol ether or polydimethylsiloxane; the polydimethylsiloxanes are selected from polysiloxanes.
In some embodiments, the defoamer is present in an amount of 0.1 parts, 0.2 parts, or 0.3 parts by mass.
In a preferred embodiment of the invention, the curing agent is 5-25 parts by mass, and is selected from aliphatic amine, alicyclic amine or low molecular polyamide curing agents.
In a preferred embodiment of the present invention, the aliphatic amine curing agent is selected from diethylenetriamine or triethylenetetramine, and the low molecular weight polyamide is selected from 203 low molecular weight polyamide, 304 low molecular weight polyamide or 651 low molecular weight polyamide.
In some embodiments, the curing agent is present in an amount of 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15, 16 parts, 17 parts, 18 parts, 19 parts, 20 parts, 21 parts, 22 parts, 23 parts, 24 parts, or 25 parts by mass.
In a preferred embodiment of the invention, the mass part of the accelerator is 0.03-0.1 part, and the accelerator is selected from DMP-30.
in some embodiments, the accelerator is 0.03, 0.05, 0.07, 0.08, 0.09, or 0.1 parts by mass.
the inventive concept will now be described with reference to specific embodiments by way of example.
Example 1
the embodiment provides a concrete protective agent which comprises the following components in parts by weight: 50 parts of epoxy (methyl) acrylate epoxy resin, 12 parts of silicon nitride, 8 parts of hollow glass beads, 9 parts of alkylene glycidyl ether, 0.2 part of solsperse, 0.2 part of polysiloxane, 20.55 parts of 651 low molecular weight polyamide and 78 parts of DMP-300.05.
The concrete protective agent of the embodiment is prepared by the following method:
1) Stirring the epoxy (methyl) acrylate epoxy resin by using a high-speed dispersion machine, adding alkylene glycidyl ether, silicon nitride and glass beads, continuously stirring at a high speed to obtain a mixture, and grinding the mixture to a particle size of less than or equal to 15 microns by using a sand mill; adding solsperse and polysiloxane to obtain a finished product A;
2)2) stirring and dispersing 651 low molecular weight polyamide, alkylene glycidyl ether, DMP-30, solsperse and polysiloxane at a high speed to prepare a finished product B;
3) And mixing the finished product A and the finished product B according to the weight ratio of the resin to the curing agent of 5:1.055 to obtain the concrete protective agent.
Example 2
the embodiment provides a concrete protective agent which comprises the following components in parts by weight: 60 parts of epoxy (methyl) acrylate epoxy resin, 7 parts of silicon carbide, 12 parts of hollow glass beads, 10 parts of methyl glycidyl ether, 0.2 part of solsperse, 0.2 part of polysiloxane, 10.5 parts of 304 low molecular weight polyamide and 300.1 parts of DMP.
The concrete protective agent of the embodiment is prepared by the following method:
1) Stirring the acrylic epoxy resin by using a high-speed dispersion machine, adding methyl glycidyl ether, silicon carbide and glass beads, continuously stirring at a high speed to obtain a mixture, and grinding the mixture by using a sand mill until the granularity is less than or equal to 15 mu m; adding solsperse and polysiloxane to obtain a finished product A;
2) Stirring and dispersing 304 low molecular weight polyamide, methyl glycidyl ether, DMP-30, solsperse and polysiloxane at a high speed to prepare a finished product B;
3) and mixing the finished product A and the finished product B according to the weight ratio of the resin to the curing agent of 4.8:1 to prepare the concrete protective agent.
example 3
The embodiment provides a concrete protective agent which comprises the following components in parts by weight: 40 parts of epoxy (methyl) acrylate epoxy resin, 8 parts of silicon carbide, 25 parts of hollow glass microsphere, 5 parts of castor oil polyglycidyl ether, 0.2 part of solsperse, 0.2 part of polysiloxane, 16.57 parts of 304 low molecular weight polyamide, 0-300.03 parts of DMP, 0.5 part of synergistic agent and 4.5 parts of pigment.
The synergist in this example was selected from phthalocyanine blue derivatives and the pigment was selected from phthalocyanine pigments (organic blue, organic green) and carbon black. The phthalocyanine pigment is selected from organic blue or organic green.
The concrete protective agent of the embodiment is prepared by the following method:
1) Stirring the acrylic epoxy resin by using a high-speed dispersion machine, adding castor oil polyglycidyl ether, silicon carbide and glass beads, continuously stirring at a high speed to obtain a mixture, and grinding the mixture by using a sand mill until the granularity is less than or equal to 15 mu m; adding solsperse, polysiloxane, a synergistic agent and pigment to obtain a finished product A;
2) Stirring and dispersing 304 low molecular weight polyamide, castor oil polyglycidyl ether, DMP-30, solsperse and polysiloxane at a high speed to prepare a finished product B;
3) And mixing the finished product A and the finished product B according to the weight ratio of the resin to the curing agent of 4.8:1 to prepare the concrete protective agent.
example 4
The embodiment provides a concrete protective agent which comprises the following components in parts by weight: 45 parts of epoxy (methyl) acrylate epoxy resin, 6 parts of silicon nitride, 18 parts of hollow glass microspheres, 8 parts of epoxypropane butyl ether, 0.2 part of solsperse, 0.2 part of polysiloxane, 17.55 parts of 203 low molecular weight polyamide, 0.5 part of DMP-300.05 part of synergistic agent and 4.5 parts of pigment.
The synergist in this embodiment is selected from benzidine yellow derivatives, the pigment is selected from diaryl pigments and c.i. pigment green 36, and the diaryl pigments are organic yellow or organic red.
The concrete protective agent of the embodiment is prepared by the following method:
1) Stirring the epoxy (methyl) acrylate epoxy resin by using a high-speed dispersion machine, adding part of epoxypropane butyl ether, silicon nitride and glass beads, continuously stirring at a high speed to obtain a mixture, and grinding the mixture by using a sand mill until the granularity is less than or equal to 15 mu m; adding solsperse and polysiloxane to obtain a finished product A;
2) Stirring and dispersing 200 parts of low molecular weight polyamide, epoxypropane butyl ether, DMP-30, solsperse and polysiloxane at a high speed to prepare a finished product B;
3) And mixing the finished product A and the finished product B according to the weight ratio of the resin to the curing agent of 5:1 to prepare the concrete protective agent.
Example 5
The embodiment provides a concrete protective agent which comprises the following components in parts by weight: 55 parts of epoxy (methyl) acrylate epoxy resin, 13 parts of silicon nitride, 13 parts of hollow glass beads, 8 parts of alkylene glycidyl ether, 0.2 part of solsperse, 0.2 part of polysiloxane, 18.55 parts of 651 low molecular weight polyamide and 78 parts of DMP-300.05.
The concrete protective agent of the embodiment is prepared by the following method:
3) Stirring the epoxy (methyl) acrylate epoxy resin by using a high-speed dispersion machine, adding alkylene glycidyl ether, silicon nitride and glass beads, continuously stirring at a high speed to obtain a mixture, and grinding the mixture to a particle size of less than or equal to 15 microns by using a sand mill; adding solsperse and polysiloxane to obtain a finished product A;
4)2) stirring and dispersing 651 low molecular weight polyamide, alkylene glycidyl ether, DMP-30, solsperse and polysiloxane at a high speed to prepare a finished product B;
3) and mixing the finished product A and the finished product B according to the weight ratio of the resin to the curing agent of 5:1.1 to prepare the concrete protective agent.
Effect verification:
The concrete protectors of examples 1 to 5 were subjected to data tests in which the hardness of the coating was measured by the pencil method for measuring the hardness of the coating film in GB/T6739-1996B, the impact resistance of the coating film was measured by the impact resistance test method for coating films in GB1732-79, the adhesion of the coating film was measured by the coating film method in accordance with the Standard GB/T9286-88, the oil resistance was measured by the oil resistance test method for coating films in HG/T3343-1985, and the acid resistance and alkali resistance were measured by the chemical resistance test method in GB/T1763. The concrete strength of the concrete protective agent is detected by adopting a cubic compressive strength test method of cement concrete, and an underwater steel ball method is used for carrying out an anti-abrasion test on the concrete for evaluating the relative abrasion resistance of the surface of the concrete. The speed of a rotating shaft of the motor is set to be 1200r/min, the abrasion time is 12h, and the abrasion resistance test adopts a test piece with the diameter of 300mm and the height of 100mm to evaluate the abrasion resistance strength and the abrasion rate. The test results are shown in tables 1 to 2.
Table 1 examples protectant test data
table 2 example pervious concrete test data
Through detection, the anti-abrasion index of the pervious concrete is 4.14 h/(h/kg/m)2) The increase is 4.53 to 5.33 h/(h/kg/m)2) The improvement is improved by 9.42-28.7%; the compressive strength is improved from 35.5MPa to 38.8-41.7 MPa, and is improved by 9.30-17.5%, and the effect is obvious.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, alterations and equivalents of the above embodiments according to the technical spirit of the present invention are still within the scope of the technical solution of the present invention.
Claims (10)
1. the concrete protective agent is characterized by comprising the following components in parts by weight: 40-60 parts of resin, 5-15 parts of wear-resistant agent, 8-25 parts of cooling agent, 5-10 parts of diluent, 0.1-0.3 part of dispersing agent, 0.1-0.3 part of defoaming agent, 5-25 parts of curing agent and 0.03-0.1 part of accelerator.
2. Concrete protectant according to claim 1, characterized in that said resin is selected from liquid epoxy resins, preferably epoxy (meth) acrylate epoxy resins.
3. The concrete protectant according to claim 1, wherein the abrasion resistant agent is selected from silicon nitride or silicon carbide.
4. The concrete protective agent according to claim 1, wherein the temperature reducing agent is solid or hollow glass beads, and the particle size of the solid or hollow glass beads is 5-30 μm.
5. The concrete protectant according to claim 1, wherein the diluent is selected from propylene oxide propylene ethers, propylene oxide butyl ethers, alkylene glycidyl ethers, toluene glycidyl ethers, or castor oil polyglycidyl ethers.
6. The concrete protectant according to claim 1, wherein the dispersant is selected from polyurethane which is a block copolymerized polyurethane or polyacrylate which is a long chain polyacrylate.
7. The concrete protectant according to claim 1, wherein the defoamer is selected from polyoxypropylene glycerol ether, polyoxypropylene polyoxyethylene glycerol ether or polydimethyl siloxane; the polydimethylsiloxanes are polysiloxanes.
8. The concrete protectant according to claim 1, wherein the curing agent is selected from the group consisting of aliphatic amine curing agents, alicyclic amine curing agents, and low molecular weight polyamide curing agents; the aliphatic amine curing agent is selected from diethylenetriamine or triethylenetetramine, and the low molecular weight polyamide curing agent is selected from 203 low molecular weight polyamide, 304 low molecular weight polyamide or 651 low molecular weight polyamide.
9. The concrete protectant according to claim 1, wherein the accelerator is selected from DMP-30.
10. A preparation method of a concrete protective agent comprises the following steps:
Step 1, stirring the resin by using a high-speed dispersion machine, adding a diluent, an abrasion-resistant agent and a cooling agent, continuously stirring at high speed to obtain a mixture, and grinding the mixture by using a sand mill until the granularity is less than or equal to 15 mu m; adding a dispersing agent and a defoaming agent to obtain a finished product A;
Step 2, stirring and dispersing the curing agent, the diluent, the accelerator, the dispersant and the defoamer at a high speed to prepare a finished product B;
and 3, mixing the finished product A and the finished product B according to the weight ratio of the resin to the curing agent of 4.5: 1-5.5: 1 to prepare the concrete protective agent.
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