CN106867364B - Armored concrete protection composite coating and its preparation method and application - Google Patents
Armored concrete protection composite coating and its preparation method and application Download PDFInfo
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- CN106867364B CN106867364B CN201710132918.5A CN201710132918A CN106867364B CN 106867364 B CN106867364 B CN 106867364B CN 201710132918 A CN201710132918 A CN 201710132918A CN 106867364 B CN106867364 B CN 106867364B
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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
-
- 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
- C04B41/52—Multiple coating or impregnating multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation
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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
- C04B41/60—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
- C04B41/61—Coating or impregnation
- C04B41/70—Coating or impregnation for obtaining at least two superposed coatings having different compositions
- C04B41/71—Coating or impregnation for obtaining at least two superposed coatings having different compositions at least one coating being an organic material
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/15—Heterocyclic compounds having oxygen in the ring
- C08K5/151—Heterocyclic compounds having oxygen in the ring having one oxygen atom in the ring
- C08K5/1545—Six-membered rings
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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
- C09D5/08—Anti-corrosive 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
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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
- C09D7/63—Additives non-macromolecular organic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
Abstract
The invention discloses a kind of armored concrete protection composite coating and its preparation method and application, the composite coating includes: solvent-free permeable primer, including epoxy resin, reactive diluent, epoxy hardener and tannic acid；Solvent-free large arch dam graphene finishing coat, including epoxy resin, reactive diluent, graphene, rust resisting pigment, filler, wetting dispersing agent, anti-settling agent and epoxy hardener；And the composite coating formed by the composite coating comprising prime coat, the top coat layer formed by solvent-free permeable primer, solvent-free large arch dam graphene finishing coat.The preparation method of composite coating provided by the invention is simple, it can be mass-produced, the composite coating of formation can be effectively reduced the infiltration rate that hydrone and other corrosive mediums are spread to inside concrete, it is protected suitable for the concrete such as such as bridge, maritime platform, railway bed, electric power pylon pedestal, armored concrete matrix, the service life for extending armored concrete is of great significance.
Description
Technical field
Present invention relates particularly to a kind of armored concrete protection composite coating, armored concrete protection composite coating and
Preparation method and application belong to armored concrete protection technology field.
Background technique
Concrete be by cementitious material cement, sand, stone and water and blended materials, additive etc. according to a certain percentage
It mixes and stirs.As hard as flint after solidification, compression capability is good, but tension ability is poor, is easy to be broken because of tension.In order to solve this
Contradiction gives full play to the compression capability of concrete, often in concrete in tension region or a certain number of steel are added in corresponding site
Muscle makes two kinds of materials be bonded to an entirety, bears external force jointly.This concrete equipped with reinforcing bar, referred to as armored concrete.
For concrete structure because sunlight irradiates, dust storm drenches with rain causes its loose porous with natural aging, corrosive medium can be by
It gradually penetrates into concrete and causes internal reinforcement corrosion, steel bar corrosion further results in that concrete durability is insufficient and premature failure
It destroys, brings serious security risk and economic loss.The endurance quality of armored concrete how is improved, armored concrete is extended
Service life, be the problem of civil engineering field and corrosion protection worker's common concern.Studies have shown that there is enough moisture to join
Be the deterioration of too early durability occurs for concrete necessary condition, and carrying out water-proofing treatment to armored concrete is to improve concrete
The effective measures of durability.
Therefore, develop it is a kind of simple and effective and can with the armored concrete protective coating of application over rust, reduce moisture and
The infiltration rate that other corrosive mediums are spread to inside concrete, the service life for extending armored concrete have important meaning
Justice.
Summary of the invention
The main purpose of the present invention is to provide a kind of armored concrete protection composite coating and preparation method thereof and answer
With with overcome the deficiencies in the prior art.
For realization aforementioned invention purpose, the technical solution adopted by the present invention includes:
The embodiment of the invention provides a kind of armored concrete protection composite coatings comprising:
Solvent-free permeable primer includes epoxy resin, reactive diluent, epoxy hardener and tannic acid；
Solvent-free large arch dam graphene finishing coat, comprising epoxy resin, reactive diluent, graphene, rust resisting pigment, filler,
Wetting dispersing agent, anti-settling agent and epoxy hardener.
Further, the graphene includes single-layer graphene and/or multi-layer graphene etc., and without being limited thereto.
Further, the fineness of the solvent-free permeable primer is less than 5 μm.
Further, the fineness of the solvent-free large arch dam graphene finishing coat is less than 30 μm.
The embodiment of the invention also provides the methods for preparing the armored concrete protection composite coating, comprising:
At least epoxy resin, reactive diluent, tannic acid are uniformly mixed and are ground to fineness less than 5 μm, adds ring
Oxygen curing agent forms solvent-free permeable primer；
And at least graphene powder, wetting dispersing agent, reactive diluent are uniformly mixed and are ground to epoxy resin
Fineness is less than 30 μm, then adds pigment and rust resisting pigment, continues to be ground to fineness later less than 30 μm, sequentially adds anti-settling agent
And epoxy hardener, form solvent-free large arch dam graphene finishing coat.
The embodiment of the invention also provides a kind of armored concrete protection composite coating, including prime coat and it is covered in bottom
Top coat layer on paint layer, the prime coat, top coat layer respectively by the armored concrete protection composite coating without molten
Agent permeable primer, solvent-free large arch dam graphene finishing coat are formed.
Preferably, the solid content of the armored concrete protection composite coating is 95.6wt%~98.2wt%.
The embodiment of the invention also provides the armored concrete protection composite coating or the armored concrete
Protection composite coating is in the purposes in armored concrete protection field.
Compared with prior art, the preparation method of armored concrete protection composite coating provided by the invention is simple, can
Produce in enormous quantities, after coat use, being formed by composite coating can be effectively reduced hydrone and other corrosive mediums to mixing
The solidifying internal infiltration rate spread of soil, is suitable for coagulations such as such as bridge, maritime platform, railway bed, electric power pylon pedestals
Soil, armored concrete matrix are protected, and the service life for extending armored concrete is of great significance.
Detailed description of the invention
Fig. 1 is the photo using the compound protective coating of the embodiment of the present invention 1 on armored concrete after film-forming.
Specific embodiment
In view of deficiency in the prior art, inventor is studied for a long period of time and is largely practiced, and is able to propose of the invention
Technical solution.The technical solution, its implementation process and principle etc. will be further explained as follows.
A kind of armored concrete protection that the one aspect of the embodiment of the present invention provides includes: with composite coating
Solvent-free permeable primer includes epoxy resin, reactive diluent, epoxy hardener and tannic acid；
Solvent-free large arch dam graphene finishing coat, comprising epoxy resin, reactive diluent, graphene, rust resisting pigment, filler,
Wetting dispersing agent, anti-settling agent and epoxy hardener.
Further, the graphene includes single-layer graphene and/or multi-layer graphene etc..
Further, the diameter of the graphene is 10~50 μm, preferably 20~30 μm, especially preferably 25 μm of left sides
It is right.
Further, the content of graphene is 0.2wt%~1.5wt% in the solvent-free large arch dam graphene finishing coat,
Preferably 0.3wt%~1.2wt%, especially preferably 0.8wt% or so.
In some preferred embodiments, the solvent-free permeable primer include 50~70wt% epoxy resin, 10~
30wt% reactive diluent, 1~10wt% tannic acid and epoxy hardener.
In some preferred embodiments, solvent-free large arch dam graphene face enamel-cover asphalt mixtures modified by epoxy resin containing 30~50wt%
Rouge, 5~25wt% reactive diluent, 0.1~2.0wt% graphene, 5~20wt% rust resisting pigment, 5~20wt% filler, 0.1
~0.5wt% wetting dispersing agent, 0.1~3.0wt% anti-settling agent and epoxy hardener
Further, the epoxy resin includes E20, any one in E44 and E51 or two or more combinations, and
It is without being limited thereto.
Further, the wetting dispersing agent includes the combination of cyclohexanone, any one or two kinds in benzyl alcohol, and not
It is limited to this.
Further, the epoxy hardener includes modified amine curing agent etc., naturally it is also possible to using other known to industry
The Suitable epoxy curing agent of type.
Further, the reactive diluent preferably uses propylene oxide lauryl ether (AGE) etc..Wherein, AGE belongs to
The alkyl glycidyl ether of C12~14, intramolecular ether-containing key and epoxy group are the monofunctional diluent of low viscosity, colorless and odorless,
In paint solidification, VOC emission can not be increased directly with amine curing agent film-forming.
Further, the anti-settling agent includes the combination of one or more of polyethylene wax, gas silicon or bentonite, and
It is without being limited thereto.
Further, in the solvent-free large arch dam graphene finishing coat filler content be 5~20wt%, preferably 5~
15wt%, especially preferably 14wt% or so.
Further, the filler includes any one in titanium dioxide, talcum powder, blanc fixe or mica powder or two
Kind or more combination, and it is without being limited thereto.
Further, the content of rust resisting pigment is 5~20wt% in the solvent-free large arch dam graphene finishing coat, preferably
5~15wt%, especially preferably 10wt% or so.
Further, the rust resisting pigment include one or both of trbasic zinc phosphate, polyphosphoric acids aluminium, zinc powder, aluminium powder with
On combination, and it is without being limited thereto.
Preferably, the fineness of the solvent-free permeable primer is less than 5 μm.
Further, the solvent-free permeable primer is about 24~36h in the curing time of room temperature (25 DEG C or so).
Preferably, the fineness of the solvent-free large arch dam graphene finishing coat is less than 30 μm.
Wherein, the solvent-free permeable primer can seal the slight void in armored concrete, effectively improve coagulation
Binding force between soil and coating, and the solvent-free large arch dam graphene finishing coat can form fine and close coating, significantly reduce
Diffusion rate from corrosive media to inside concrete, and then can by the cooperation of two kinds of coatings, realize to reinforced concrete
The integrated protection of soil.
Postscript, if not illustrating, each raw material in the armored concrete protection composite coating can be by commercially available
Etc. approach obtain.
A kind of side for preparing the armored concrete protection composite coating that the one aspect of the embodiment of the present invention provides
Method includes:
At least epoxy resin, reactive diluent, tannic acid are uniformly mixed and are ground to fineness less than 5 μm, adds ring
Oxygen curing agent forms solvent-free permeable primer；
And graphene, wetting dispersing agent, reactive diluent are uniformly mixed with epoxy resin at least and are ground to fineness
Less than 30 μm, then filler and rust resisting pigment are added, continues to be ground to fineness later less than 30 μm, sequentially add anti-settling agent and ring
Oxygen curing agent forms solvent-free large arch dam graphene finishing coat.
In of the invention one more specific embodiment, the method for the armored concrete protection composite coating can
To include the following steps:
(1) epoxy resin, reactive diluent AGE, tannic acid are mixed evenly, then are ground to 5 μm of fineness <, be added
Epoxy hardener film-forming obtains solvent-free permeable primer；
(2) graphene powder, wetting dispersing agent, reactive diluent AGE are mixed into epoxy resin, it is small is ground to fineness
In 30 μm, and filler and rust resisting pigment are added, continues to be ground to fineness less than 30 μm, add anti-settling agent, after mixing evenly, then add
Add epoxy hardener, continuess to mix uniformly, obtain solvent-free large arch dam graphene finishing coat.
A kind of armored concrete protection composite coating that the one aspect of the embodiment of the present invention provides include prime coat and
The top coat layer being covered on prime coat, the prime coat, top coat layer are respectively by the armored concrete protection composite coating
In solvent-free permeable primer, solvent-free large arch dam graphene finishing coat formed.
Wherein, the small sky in armored concrete can be sealed by the prime coat that the solvent-free permeable primer is formed
Gap effectively improves the binding force between concrete and coating, and tannic acid especially therein can cooperate other components and iron rust
It chemically reacts, is chelate by rust transformation, therefore can also realize application over rust well, and by the solvent-free Gao Gu
The top coat layer that containing graphene finishing coat is formed is very fine and close, in particular with two-dimensional material graphene therein, can also further increase
The compactness and water resistance of strong composite coating substantially extend the diffusion path of corrosive medium in the coating, significantly reduce corrosivity
Medium and then is realized to the integrated protection of armored concrete, and protective performance is excellent to the diffusion rate of inside concrete.By
Organic cooperation of aforementioned priming paint and finishing coat, can carry out application over rust to the armored concrete and metal component be on active service, priming paint and
Finishing coat is all using epoxy coating system, and inter-layer bonding force is strong.
Preferably, the prime coat with a thickness of 30~55 μm.
Preferably, the top coat layer with a thickness of 250~300 μm.
Preferably, the solid content of the armored concrete protection composite coating is 95.6wt%~98.2wt%.
Preferably, the armored concrete protection is 0.2wt%~1.5wt% with the content of graphene in composite coating.
The one aspect of the embodiment of the present invention additionally provides the armored concrete protection composite coating or described
Armored concrete protection composite coating is in the purposes in armored concrete protection field.
A kind of armored concrete protection that the one aspect of the embodiment of the present invention provides preparation method packet of composite coating
It includes:
The armored concrete protection is provided and uses composite coating；
Solvent-free permeable primer is coated on matrix, and is formed by curing prime coat at room temperature；
Solvent-free large arch dam graphene finishing coat is coated on prime coat, and is formed by curing top coat layer at room temperature.
A kind of means of defence for armored concrete that the one aspect of the embodiment of the present invention provides includes:
The armored concrete protection is provided and uses composite coating；
At least remove the loose attachment in reinforced concrete body surface face；
Solvent-free permeable primer is coated in reinforced concrete body surface face, and is formed by curing priming paint at room temperature
Layer；
Solvent-free large arch dam graphene finishing coat is coated on prime coat, and is formed by curing top coat layer at room temperature,
Thus in forming protection composite coating on armored concrete matrix.
Preferably, the armored concrete matrix includes bridge, maritime platform, railway bed or electric power pylon pedestal etc.,
And it is without being limited thereto.
Further, in some more specific embodiments of the invention, the means of defence of the armored concrete
It may include steps of:
(1) pressure-air purging is carried out to reinforced concrete surface, removes surface porosity attachment, coats solvent-free infiltration
Property priming paint, room temperature curing certain time, such as 24 hours；
(2) solvent-free large arch dam graphene finishing coat, room temperature curing certain time, example are brushed in solvent-free permeable primer
Such as 72h.
The technical solution, its implementation process and principle etc. will be further explained in conjunction with specific embodiments as follows
It is bright.
Embodiment 1:
In the present embodiment, armored concrete substrate is the bridge steel tubular pole being on active service 3 years, and concrete substrate part is old
Change, surface is in loose small pore-like, and slight erosion occurs for inside concrete reinforcing bar.Composite coating is sequentially coated at reinforced concrete
Native surface, wherein the coating thickness of solvent-free permeable primer is 30~50 μm, the film of solvent-free large arch dam graphene finishing coat
With a thickness of 250~300 μm, the overlay painting interval of twice paint is 24 hours.Fig. 1 is applied using the composite protective of the embodiment of the present invention 1
Photo of the layer on armored concrete after film-forming.
The preparation method of above-mentioned armored concrete protection composite coating includes the following steps:
(1) by 50g epoxy resin E44 (being purchased from TaiWan, China South Asia resin processing plant), 20g reactive diluent AGE, 3g tannic acid
It is mixed evenly, is ground to 5 μm of fineness <, 50g modified amine curing agent TG3012 is added (purchased from Dongguan City treasure and resin science and technology
Co., Ltd), film-forming is to get solvent-free permeable primer；
(2) 0.8g graphene powder, 1.0g wetting dispersing agent EFKA4010,10g reactive diluent AGE are mixed into 30g
Epoxy resin E 51 (being purchased from TaiWan, China South Asia resin processing plant) and 23g epoxy resin E44 (being purchased from TaiWan, China South Asia resin processing plant)
In, fineness is ground to less than 30 μm, and adds 8g titanium dioxide, 10g talcum powder, 8g blanc fixe, 5g sericite and 8g phosphoric acid
Zinc continues to be ground to fineness less than 30 μm, adds 0.9g bentonite anti-settling agent, after mixing evenly, then add modified amine curing agent
B168 (is purchased from Wuhu spring breeze new material Co., Ltd), is uniformly mixed to get solvent-free large arch dam graphene finishing coat；
(3) pressure-air purging is carried out to reinforced concrete surface, removes surface porosity attachment, coats solvent-free infiltration
Property priming paint, room temperature curing 24 hours；
(4) solvent-free large arch dam graphene finishing coat is brushed in solvent-free permeable primer, room temperature curing 72 hours.
Water imbibition experiment is carried out to coating and uncoated armored concrete square using infusion method, impregnating medium is
3.5wt%NaCl solution, soaking time are 240 hours, and temperature is 25 DEG C, is weighed by assay balance to water absorption, are tied
Fruit shows: the water absorption rate of coating composite coating armored concrete is only the 1/15 of uncoated composite coating armored concrete, and
After impregnating 1000h in 3.5wt%NaCl solution, coating is still firmly bonded to reinforced concrete surface, and without obscission.
Separately the armored concrete square of coating is placed in the outdoor environment of Ningbo area and is placed 1 year or more, coating table
There is not obvious corrosion failure in face.
Comparative example 1: it is substantially the same manner as Example 1, but graphene is not added in solvent-free large arch dam finishing coat.
According to the mode of operation of embodiment 1, successively by the solvent-free permeable primer of the comparative example 1, solvent-free large arch dam
Graphene finishing coat is coated in band rust reinforced concrete surface of the surface after purge and forms composite coating.According to embodiment
1 mode, the armored concrete square using infusion method to surface with composite coating carry out water imbibition experiment, the results showed that
The water absorption rate for coating the armored concrete of composite coating is the 1/10 of uncoated composite coating armored concrete.
Comparative example 2: referring to embodiment 1, but solvent-free permeable primer therein is only taken to be coated in armored concrete table
Face forms coating.The armored concrete for coating the coating to surface according still further to the scheme of embodiment 1 carries out every test.As a result it shows
Show: the water absorption rate for coating the armored concrete of the coating is the 1/3 of uncoated composite coating armored concrete, in 3.5wt%
Coating gradually falls off after impregnating 500h in NaCl solution.In addition, coating the armored concrete square of the coating in Ningbo area
Outdoor environment in place 12 months after, coating falls off substantially, and armored concrete square rusty stain increased significantly.
Comparative example 3: referring to embodiment 1, but only take solvent-free large arch dam graphene finishing coat therein mixed coated in reinforcing bar
Solidifying soil surface forms coating.The armored concrete for coating the coating to surface according still further to the scheme of embodiment 1 carries out every test.
As the result is shown: the water absorption rate for coating the armored concrete of the coating is the 1/12 of uncoated composite coating armored concrete, and
Coating has bubbling phenomenon after impregnating 1000h in 3.5wt%NaCl solution.
Embodiment 2:
In the present embodiment, composite coating is applied to the concrete pedestal of coastal state's grid power transmission steel tower, the coagulation soil matrix
Seat in a rectangular parallelepiped shape, having a size of 50cm × 50cm × 70cm, long-term exposed in atmospheric environment, its surface aging after wind and weather
Obviously.Composite coating is successively brushed in reinforced concrete surface, wherein the coating thickness of solvent-free permeable primer be 40~
55 μm, the coating thickness of solvent-free large arch dam graphene finishing coat is 250~300 μm, and the overlay painting interval of twice paint is 24 hours.
The preparation method of above-mentioned armored concrete protection composite coating includes the following steps:
(1) identical as step (1) in embodiment 1；
(2) 0.8g graphene powder, 1.0g wetting dispersing agent EFKA4010,15g reactive diluent AGE are mixed into 20g
Epoxy resin E 51 (being purchased from TaiWan, China South Asia resin processing plant) and 33g epoxy resin E44 (being purchased from TaiWan, China South Asia resin processing plant)
In, fineness is ground to less than 30 μm, and adds 8g titanium dioxide, 3g talcum powder, 6g blanc fixe, 5g sericite, 8g trbasic zinc phosphate
With 5g aluminium powder, continues to be ground to fineness less than 30 μm, add 0.9g bentonite anti-settling agent, after mixing evenly, then add modified amine
Curing agent B168 (is purchased from Wuhu spring breeze new material Co., Ltd), is uniformly mixed to get solvent-free large arch dam graphene finishing coat；
(3) identical as step (3) in embodiment 1；
(4) identical as step (4) in embodiment 1；
The armored concrete protection composite coating after curing completely of the present embodiment, coating surface is smooth, dumb light, compactness
Well, composite coating was on active service at the scene after 1 year, and obvious corrosion failure does not occur in coating surface, to the coagulation of electric power pylon
Soil matrix seat protection effect is good.
Embodiment 3: the embodiment is substantially the same manner as Example 1, and difference place is:
Tannin acid content about 3wt% in solvent-free permeable primer, reactive diluent dosage slightly adjust, remaining component is used
It measures constant.
The content of graphene is about 0.2wt% in solvent-free large arch dam graphene finishing coat, and wetting dispersing agent dosage is slightly adjusted
Whole, remaining amounts of components is held essentially constant.
Embodiment 4: the embodiment is substantially the same manner as Example 1, and difference place is:
Tannin acid content about 10wt%, content of epoxy resin slightly adjust in solvent-free permeable primer, remaining component is used
It measures constant.
The content of graphene is about 1.2wt% in solvent-free large arch dam graphene finishing coat, and reactive diluent dosage is slightly adjusted
Whole, remaining amounts of components is held essentially constant.
Embodiment 5: the embodiment is substantially the same manner as Example 2, and difference place is:
Tannin acid content about 6wt% in solvent-free permeable primer, reactive diluent dosage have increased slightly, remaining component is used
It measures constant.
The content of graphene is about 0.3wt% in solvent-free large arch dam graphene finishing coat, and wetting dispersing agent dosage is slightly adjusted
Whole, remaining amounts of components is held essentially constant.
Embodiment 6: the embodiment is substantially the same manner as Example 1, and difference place is:
The content of graphene is about 1.5wt% in solvent-free large arch dam graphene finishing coat, and rust resisting pigment dosage slightly adjusts,
Remaining amounts of components is held essentially constant.
Embodiment 7: the embodiment is substantially the same manner as Example 2, and difference place is:
The content of graphene is about 0.8wt% in solvent-free large arch dam graphene finishing coat, and the dosages such as wetting dispersing agent are slightly
Adjustment, remaining amounts of components are held essentially constant.
Likewise, referring to the composite coating that is formed of the composite coating addressed to embodiment 1-7 of mode of embodiment 1,2
It can be carried out test, can also find that it also can generate good protection effect to armored concrete based article, and substantially extend it
Service life.
It should be appreciated that the technical concepts and features of above-described embodiment only to illustrate the invention, its object is to allow be familiar with this
The personage of item technology cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all
Equivalent change or modification made by Spirit Essence according to the present invention, should be covered by the protection scope of the present invention.
Claims (27)
1. a kind of armored concrete protection composite coating, characterized by comprising:
Solvent-free permeable primer, comprising 30~65wt% epoxy resin, 10~35wt% reactive diluent, epoxy hardener and
3~10wt% tannic acid；
Solvent-free large arch dam graphene finishing coat, comprising 30~50wt% epoxy resin, 5~25wt% reactive diluent, 0.1~
2.0wt% graphene, 5~20wt% rust resisting pigment, 5~20wt% filler, 0.1~0.5wt% wetting dispersing agent, 0.1~
3.0wt% anti-settling agent and epoxy hardener.
2. armored concrete protection composite coating according to claim 1, it is characterised in that: the graphene includes single layer
Graphene and/or multi-layer graphene.
3. armored concrete according to claim 1 or claim 2 protection composite coating, it is characterised in that: the graphene it is straight
Diameter is 10~50 μm.
4. armored concrete protection composite coating according to claim 3, it is characterised in that: the diameter of the graphene is
20~30 μm.
5. armored concrete protection composite coating according to claim 1, it is characterised in that: the solvent-free large arch dam stone
The content of graphene is 0.2~1.5wt% in black alkene finishing coat.
6. armored concrete protection composite coating according to claim 5, it is characterised in that: the solvent-free large arch dam stone
The content of graphene is 0.3~1.2wt% in black alkene finishing coat.
7. armored concrete protection composite coating according to claim 1, it is characterised in that: the wetting dispersing agent includes
The combination of any one or two kinds in cyclohexanone, benzyl alcohol.
8. armored concrete protection composite coating according to claim 1, it is characterised in that: the epoxy resin includes
Any one in E20, E44 and E51 or two or more combinations.
9. armored concrete protection composite coating according to claim 1, it is characterised in that: the epoxy hardener includes
Modified amine curing agent.
10. armored concrete protection composite coating according to claim 1, it is characterised in that: the reactive diluent packet
Include propylene oxide lauryl ether.
11. armored concrete protection composite coating according to claim 1, it is characterised in that: the anti-settling agent includes poly-
The combination of one or more of ethylene waxes, gas silicon or bentonite.
12. armored concrete protection composite coating according to claim 1, it is characterised in that: the solvent-free large arch dam
The content of filler is 5~15wt% in graphene finishing coat.
13. according to claim 1 or 12 armored concrete protection composite coatings, it is characterised in that: the filler includes
Any one in titanium dioxide, talcum powder, blanc fixe or mica powder or two or more combinations.
14. armored concrete protection composite coating according to claim 1, it is characterised in that: the solvent-free large arch dam
The content of rust resisting pigment is 5~15wt% in graphene finishing coat.
15. according to claim 1 or 14 armored concrete protect and use composite coatings, it is characterised in that: the rust resisting pigment
Combination including one or more of trbasic zinc phosphate, polyphosphoric acids aluminium, zinc powder, aluminium powder.
16. armored concrete protection composite coating according to claim 1, it is characterised in that: the solvent-free permeability
The fineness of priming paint is less than 5 μm.
17. armored concrete protection composite coating according to claim 1, it is characterised in that: the solvent-free large arch dam
The fineness of graphene finishing coat is less than 30 μm.
18. the armored concrete protection preparation method of composite coating, feature exist as described in any one of claim 1-17
In including:
At least epoxy resin, reactive diluent, tannic acid are uniformly mixed and are ground to fineness less than 5 μm, it is solid to add epoxy
Agent forms solvent-free permeable primer；
And graphene, wetting dispersing agent, reactive diluent are uniformly mixed with epoxy resin at least and are ground to fineness and is less than
30 μm, then filler and rust resisting pigment are added, continue to be ground to fineness later less than 30 μm, sequentially adds anti-settling agent and epoxy is solid
Agent forms solvent-free large arch dam graphene finishing coat.
19. a kind of armored concrete protection composite coating, including prime coat and the top coat layer being covered on prime coat, feature
Be: the armored concrete as described in any one of claim 1-17 protects compound painting respectively for the prime coat, top coat layer
Solvent-free permeable primer, solvent-free large arch dam graphene finishing coat in material are formed.
20. the 9 armored concrete protection composite coating according to claim 1, it is characterised in that: the thickness of the prime coat
It is 30~55 μm.
21. the 9 armored concrete protection composite coating according to claim 1, it is characterised in that: the thickness of the top coat layer
It is 250~300 μm.
22. the 9 armored concrete protection composite coating according to claim 1, it is characterised in that: the armored concrete is anti-
The solid content of shield composite coating is 95.6wt%~98.2wt%.
23. the 9 armored concrete protection composite coating according to claim 1, it is characterised in that: the armored concrete is anti-
Shield is 0.2wt%~1.5wt% with the content of graphene in composite coating.
24. appointing in the protection composite coating of armored concrete described in any one of claim 1-17 or claim 19-23
Armored concrete protection composite coating described in one is in the purposes in armored concrete protection field.
25. the preparation method that composite coating is used in a kind of armored concrete protection, characterized by comprising:
Armored concrete protection described in any one of claim 1-17 is provided and uses composite coating；
Solvent-free permeable primer is coated on matrix, and is formed by curing prime coat at room temperature；
Solvent-free large arch dam graphene finishing coat is coated on prime coat, and is formed by curing top coat layer at room temperature.
26. a kind of means of defence of armored concrete, characterized by comprising:
Armored concrete protection described in any one of claim 1-17 is provided and uses composite coating；
At least remove the loose attachment in reinforced concrete body surface face；
Solvent-free permeable primer is coated in reinforced concrete body surface face, and is formed by curing prime coat at room temperature；
Solvent-free large arch dam graphene finishing coat is coated on prime coat, and is formed by curing top coat layer at room temperature, thus
In forming protection composite coating on armored concrete matrix.
27. the means of defence of the armored concrete according to claim 26, it is characterised in that: the armored concrete matrix packet
Include bridge, maritime platform, railway bed or electric power pylon pedestal.
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| CN107322786A (en) * | 2017-06-28 | 2017-11-07 | 中铁第勘察设计院集团有限公司 | Chlorine oxygen magnesium coated reinforcement concrete and preparation method thereof |
| CN108192471A (en) * | 2018-01-31 | 2018-06-22 | 燕园众欣纳米科技（北京）有限公司 | A kind of hydrophobic type graphene non-solvent epoxy Paints Curing under Water and preparation method thereof |
| CN110437703A (en) * | 2018-05-02 | 2019-11-12 | 深圳市烯世传奇科技有限公司 | Graphene/epoxy zinc powder anticorrosive paint and preparation method thereof |
| CN110746846A (en) * | 2019-10-09 | 2020-02-04 | 五峰赤诚生物科技股份有限公司 | Tannin-based water-based paint for metal protection and preparation method thereof |
| CN111454645B (en) * | 2020-05-19 | 2022-05-20 | 重庆天壹交通工程有限公司 | Waterproof agent and using method thereof |
| CN113717615B (en) * | 2021-09-17 | 2022-11-08 | 浙江鱼童新材料股份有限公司 | Preparation method of wear-resistant and corrosion-resistant graphene/silicon dioxide/epoxy resin ultra-slip composite coating |
| CN114539885B (en) * | 2022-04-13 | 2022-08-16 | 中国科学院宁波材料技术与工程研究所 | Special high-permeability moisture-curing seal primer for concrete and preparation method and application thereof |
| CN116903329B (en) * | 2023-07-14 | 2024-01-23 | 南京水科院瑞迪科技集团有限公司 | High-strength anti-corrosion concrete pipe pile and preparation method thereof |
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| CN103214915B (en) * | 2013-05-10 | 2016-04-27 | 山西省交通科学研究院 | A kind of concrete surface protective system and preparation method thereof |
| CN103897510B (en) * | 2014-04-22 | 2016-05-11 | 西南大学 | Water-based antirusting paint operable with rust and preparation method thereof |
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