CN112221909A - Treatment method for prolonging service life of foundation pit supporting structure after being in service for long time - Google Patents

Treatment method for prolonging service life of foundation pit supporting structure after being in service for long time Download PDF

Info

Publication number
CN112221909A
CN112221909A CN202011055334.0A CN202011055334A CN112221909A CN 112221909 A CN112221909 A CN 112221909A CN 202011055334 A CN202011055334 A CN 202011055334A CN 112221909 A CN112221909 A CN 112221909A
Authority
CN
China
Prior art keywords
foundation pit
supporting structure
pit supporting
anticorrosive coating
treatment method
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202011055334.0A
Other languages
Chinese (zh)
Other versions
CN112221909B (en
Inventor
郭典塔
石汉生
熊勃
谢琳
施军建
吴宏章
林成林
刘帅花
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Huagu Engineering Co ltd
Original Assignee
Guangdong Huagu Engineering Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Huagu Engineering Co ltd filed Critical Guangdong Huagu Engineering Co ltd
Priority to CN202011055334.0A priority Critical patent/CN112221909B/en
Publication of CN112221909A publication Critical patent/CN112221909A/en
Application granted granted Critical
Publication of CN112221909B publication Critical patent/CN112221909B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/36—Successively applying liquids or other fluent materials, e.g. without intermediate treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • 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
    • C09D123/00—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers
    • C09D123/26—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers modified by chemical after-treatment
    • C09D123/30—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers modified by chemical after-treatment by oxidation
    • 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
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes
    • 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
    • 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
    • C09D7/65—Additives macromolecular
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/02—Foundation pits
    • E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D37/00—Repair of damaged foundations or foundation structures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2301/00—Inorganic additives or organic salts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2320/00—Organic additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2502/00—Acrylic polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2503/00—Polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2505/00—Polyamides
    • 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
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
    • 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
    • C08K2201/00—Specific properties of additives
    • C08K2201/002—Physical properties
    • C08K2201/005—Additives being defined by their particle size in general
    • 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
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Paints Or Removers (AREA)

Abstract

The application relates to the technical field of foundation pit excavation, and discloses a treatment method for prolonging the service life of a foundation pit supporting structure after being in service for a long time, which is technically characterized by comprising the following steps: excavation of a foundation pit: performing anticorrosive treatment on the foundation pit supporting structure: and uniformly spraying an anticorrosive coating on the surface of the foundation pit supporting structure, wherein the anticorrosive coating comprises a first anticorrosive coating attached to the surface of the foundation pit supporting structure and a second anticorrosive coating attached to the surface of the first anticorrosive coating. The alkali resistance of the waterborne polyurethane coating can be improved, so that the protective effect of the waterborne polyurethane coating on the foundation pit supporting structure is enhanced, the service life of the foundation pit supporting structure is prolonged, and the safety performance of the foundation pit supporting structure after being in service for a long time is enhanced.

Description

Treatment method for prolonging service life of foundation pit supporting structure after being in service for long time
Technical Field
The application relates to the field of foundation pit supporting structure protection, in particular to a processing method for prolonging the service life of a foundation pit supporting structure after being in service for a long time.
Background
In general, the service life of the foundation pit supporting structure is generally one year, but the service life of the foundation pit supporting structure exceeds one year due to engineering tail rot and other reasons of some foundation pit supporting structures, so that the foundation pit supporting structure has the problem of being out of service. However, after the foundation pit supporting structure is in service for a long time, the foundation pit supporting structure is in an alkaline concrete structure for a long time, so that the problem that the foundation pit supporting structure is corroded easily occurs.
In order to solve the problem, at present, an anticorrosive coating is generally sprayed on the peripheral side of a steel bar or a soil nail or an anchor rod so as to improve the support stability of the foundation pit support structure. The epoxy resin coating is one of the anticorrosion coatings, the bonding capacity of the epoxy resin coating and the foundation pit supporting structure is high, the alkali resistance of the epoxy resin coating is good, however, the epoxy resin coating is an oily coating, and in the process of preparing the foundation pit supporting structure, irritant odor is easily generated, and the epoxy resin coating has the defect of being not environment-friendly.
In order to solve the problem that epoxy resin coatings are not environment-friendly, waterborne polyurethane coatings appear on the market at present, adopt water as a solvent, do not generate pungent smell when in use, and have the advantage of environmental protection. However, the general aqueous polyurethane coating has poor alkali resistance, so that the aqueous polyurethane coating on the foundation pit supporting structure in an alkaline environment is easily damaged and falls off, the foundation pit supporting structure is easily corroded, and the safety performance of the foundation pit supporting structure in an out-of-service state is reduced.
Disclosure of Invention
In order to enhance the protection effect of the water-based polyurethane coating on the foundation pit supporting structure, prolong the service life of the foundation pit supporting structure and further enhance the safety performance of the foundation pit supporting structure after being in service for a long time, the application provides a treatment method for prolonging the service life of the foundation pit supporting structure after being in service for a long time.
The treatment method for prolonging the service life of the foundation pit supporting structure after being in service for the long time adopts the following technical scheme:
a treatment method for prolonging the service life of a foundation pit supporting structure after being in service for a long time comprises the following steps:
performing anticorrosive treatment on the foundation pit supporting structure: uniformly spraying an anticorrosive coating on the surface of the foundation pit supporting structure;
the anti-corrosion coating comprises a first anti-corrosion coating attached to the surface of the foundation pit supporting structure and a second anti-corrosion coating attached to the surface of the first anti-corrosion coating;
the paint adopted by the first anticorrosive coating is prepared from the following raw materials in parts by weight:
aqueous polyurethane: 75-85 parts of
Calcium carbonate: 6-10 parts of
Dispersing agent: 0.5 to 1 portion
Polysiloxane antifoaming agent: 0.03 to 0.05 portion
Polyacrylamide: 0.001 to 0.002 portion
Curing agent: 15-20 parts of
Water: 20-30 parts of
The paint adopted by the second anticorrosive coating is prepared from the following raw materials in parts by weight:
modified wax emulsion: 40-50 parts of
Water-soluble acrylic resin: 6 to 8 portions of
Setting agent: 3-5 parts of
The modified wax emulsion comprises oxidized polyethylene wax emulsion and dimethyl silicone oil, wherein the weight ratio of the oxidized polyethylene wax emulsion to the dimethyl silicone oil is (3-4): (1-2).
By adopting the technical scheme, the first anticorrosive coating is sprayed on the foundation pit supporting structure, then the second anticorrosive coating is sprayed on the surface of the first anticorrosive coating, and the first anticorrosive coating and the second anticorrosive coating are both water-based anticorrosive coatings; and the oxidized polyethylene wax emulsion and the dimethyl silicone oil in the second anticorrosive coating have a synergistic effect, and the alkali resistance effect of the aqueous anticorrosive coating can be improved, so that the foundation pit supporting structure is better protected, the service life of the foundation pit supporting structure is further prolonged, and the safety performance of the foundation pit supporting structure after being in service for a long time is enhanced.
Preferably, the preparation method of the modified wax emulsion comprises the following steps:
uniformly mixing the oxidized polyethylene wax emulsion and the dimethyl silicone oil according to the proportion to obtain a premix;
stirring the pre-mixture for 10-30min at the stirring speed of 200-; stirring the intermediate mixture for 30-60min at a stirring speed of 850-.
By adopting the technical scheme, the modified wax emulsion obtained by modifying the oxidized polyethylene wax emulsion and the dimethyl silicone oil according to the method can improve the alkali resistance effect of the water-based anticorrosive coating, so that the water-based anticorrosive coating can better protect the foundation pit supporting structure, the service life of the foundation pit supporting structure is further prolonged, and the safety performance of the foundation pit supporting structure after being in service for a long time is enhanced.
Preferably, the preparation method of the paint used by the first anticorrosive coating is as follows:
dissolving polyacrylamide in water to prepare a polyacrylamide aqueous solution;
adding waterborne polyurethane, calcium carbonate, a dispersing agent and a polysiloxane antifoaming agent into the polyacrylamide aqueous solution, and stirring until the materials are uniformly mixed to obtain a matrix component;
and adding a curing agent into the matrix component, and continuously stirring until the curing agent is uniformly mixed to obtain the coating adopted by the first anticorrosive coating.
By adopting the technical scheme, the polyacrylamide is used for thickening, and is dissolved in water, so that the polyacrylamide is more favorably dispersed, the polyacrylamide is uniformly dispersed in the first anticorrosive coating, and the uniformity of the first anticorrosive coating is favorably improved; calcium carbonate is used as a filler, so that the first waterproof coating is reinforced; the dispersant can promote the dispersion of the calcium carbonate, so that the calcium carbonate is uniformly dispersed in the first anticorrosive coating; the polysiloxane defoaming agent can remove bubbles in the first anticorrosive coating and improve the adhesive force between the first anticorrosive coating and the foundation pit supporting structure.
Preferably, the preparation method of the coating adopted by the second anticorrosive coating is as follows:
stirring the modified wax emulsion and the water-soluble acrylic resin until the modified wax emulsion and the water-soluble acrylic resin are uniformly mixed to obtain the alkali-resistant preservative;
and stirring the alkali-resistant preservative and the setting agent until the alkali-resistant preservative and the setting agent are uniformly mixed to obtain the coating used for the second anticorrosive coating.
By adopting the technical scheme, the water-soluble acrylic resin has a tackifying effect, and can improve the adhesion between the second anticorrosive coating and the first anticorrosive coating, so that the stability of the second anticorrosive coating is enhanced.
Preferably, the spraying method of the anticorrosive coating in the foundation pit supporting structure comprises the following steps:
spraying a first anticorrosive coating: the prepared first anticorrosive coating is evenly sprayed on the foundation pit support
On the mechanism, a first anticorrosive coating is obtained after curing;
spraying a second anticorrosive coating: and uniformly spraying the prepared second anticorrosive coating on the first anticorrosive coating, and airing to obtain the second anticorrosive coating.
By adopting the technical scheme, the first anticorrosive coating and the second anticorrosive coating form a two-layer protective structure for the foundation pit supporting structure, so that the protection of the foundation pit supporting structure is favorably enhanced, and the stability of the foundation pit supporting structure is improved; in addition, the second anticorrosive coating is prepared from raw materials including the modified wax emulsion, has a good alkali resistance effect, and is beneficial to better protecting the foundation pit supporting structure by the water-based anticorrosive coating, so that the supporting stability of the foundation pit supporting structure is improved.
Preferably, the thickness of the first anticorrosive coating is 0.5-1mm, and the thickness of the second anticorrosive coating is 0.2-0.4 mm.
By adopting the technical scheme, when the thickness of the first anticorrosive coating is 0.5-1mm, the first anticorrosive coating cannot fall off due to over-thickness, and the protective effect cannot be deteriorated due to over-thinness; the thickness of the second anticorrosive coating is controlled to be 0.2-0.4mm, which is beneficial to improving the bonding property between the second anticorrosive coating and the first anticorrosive coating.
Preferably, the average particle size of the calcium carbonate is in the range of 100-200 meshes.
By adopting the technical scheme, when the average particle size range of the calcium carbonate is 100-mesh and 200-mesh, the dispersion performance of the calcium carbonate is better, and the phenomenon that the calcium carbonate is aggregated into a mass is favorably reduced, so that the uniformity of the water-based anticorrosive coating is improved, the alkali resistance effect of the water-based anticorrosive coating is better, the foundation pit supporting structure can be better protected, the service life of the foundation pit supporting structure is further prolonged, and the safety performance of the foundation pit supporting structure after being in service for a long time is enhanced.
Preferably, the dispersant is one or a combination of more of polyethylene glycol 200 and polyethylene glycol 400.
By adopting the technical scheme, the polyethylene glycol 200 and the polyethylene glycol 400 can promote the dispersion of calcium carbonate, reduce the agglomeration of calcium carbonate and facilitate the improvement of the bonding property of the first anticorrosive coating and the foundation pit supporting structure, thereby improving the protection effect of the water-based anticorrosive coating on the foundation pit supporting structure.
Preferably, the molecular weight of the polyacrylamide is 1000-1500 ten thousand.
By adopting the technical scheme, when the molecular weight of the polyacrylamide is less than 1000 ten thousand, the bonding property of the first anticorrosive coating and the foundation pit protection mechanism is reduced, and the alkali resistance effect of the water-based anticorrosive coating is reduced; when the molecular weight of polyacrylamide is more than 1500 ten thousand, the solubility of polyacrylamide is lowered, which has a disadvantage of being unfavorable for dispersion.
Preferably, the curing agent and the setting agent are any one or a combination of more of polyamide and alicyclic polyamine.
By adopting the technical scheme, the curing agent and the setting agent both have the function of accelerating the hardening of the coating, wherein when the curing agent is a composition of one or two of polyamide or alicyclic polyamine, the curing agent can be cured at normal temperature, which is favorable for enhancing the operability.
In summary, the present application includes at least one of the following beneficial technical effects:
1. spraying a first anticorrosive coating on a foundation pit supporting structure, and then spraying a second anticorrosive coating on the surface of the first anticorrosive coating, wherein the first anticorrosive coating and the second anticorrosive coating are both water-based anticorrosive coatings; the oxidized polyethylene wax emulsion and the dimethyl silicone oil in the second anticorrosive coating have a synergistic effect, and the alkali resistance effect of the aqueous anticorrosive coating can be improved, so that the foundation pit supporting structure is better protected, the service life of the foundation pit supporting structure is further prolonged, and the safety performance of the foundation pit supporting structure after being in service for an extended period is enhanced; 2. the modified wax emulsion obtained by modifying the oxidized polyethylene wax emulsion and the dimethyl silicone oil according to the method can improve the alkali resistance effect of the water-based anticorrosive coating, so that the water-based anticorrosive coating can better protect a foundation pit supporting structure, the service life of the foundation pit supporting structure is further prolonged, and the safety performance of the foundation pit supporting structure after being in service for a long time is enhanced;
3. when the average particle size range of the calcium carbonate is 100-200 meshes, the dispersion performance of the calcium carbonate is better, and the phenomenon that the calcium carbonate is aggregated into a mass is favorably reduced, so that the uniformity of the water-based anticorrosive coating is improved, the alkali resistance effect of the water-based anticorrosive coating is better, the foundation pit supporting structure can be better protected, the service life of the foundation pit supporting structure is further prolonged, and the safety performance of the foundation pit supporting structure after being in service for a long time is enhanced;
4. when the molecular weight of the polyacrylamide is less than 1000 ten thousand, the bonding performance of the first anticorrosive coating and the foundation pit protection mechanism is reduced, and the alkali resistance effect of the water-based anticorrosive coating is reduced; when the molecular weight of polyacrylamide is more than 1500 ten thousand, the solubility of polyacrylamide is lowered, which has a disadvantage of being unfavorable for dispersion.
Detailed Description
The present application will be described in further detail with reference to examples.
The raw materials related to the application are all commercially available, and the specific specification and sources are as follows:
TABLE 1 sources of raw materials
Figure BDA0002710693630000051
Examples
The components and proportions of the coatings used for the first anticorrosive coating and the second anticorrosive coating in examples 1 to 10 are shown in table 2 below:
TABLE 2 Components and proportions (units/kg) of the coating materials used for the first anticorrosive coating and the second anticorrosive coating
Figure BDA0002710693630000052
Example 1
A treatment method for prolonging the service life of a foundation pit supporting structure after being in service for a long time comprises the following steps:
performing anticorrosive treatment on the foundation pit supporting structure: uniformly spraying a coating adopted by a first anticorrosive coating on the surface of the foundation pit supporting structure, and curing to obtain the first anticorrosive coating, wherein the spraying thickness of the first anticorrosive coating is 0.75 mm; then, uniformly spraying the paint adopted by the second anticorrosive coating on the first anticorrosive coating, and airing to obtain a second anticorrosive coating, wherein the spraying thickness of the second anticorrosive coating is 0.3 mm; the preparation method of the paint adopted by the first anticorrosive coating comprises the following steps:
s1.1, weighing polyacrylamide with the molecular weight of 1250 ten thousand according to the proportion in the table 2, and dissolving the polyacrylamide in water to prepare a polyacrylamide aqueous solution;
s1.2, adding waterborne polyurethane, calcium carbonate with the average particle size of 150 meshes, a dispersing agent and a polysiloxane antifoaming agent into the polyacrylamide aqueous solution according to the proportion in the table 2, and stirring until the materials are uniformly mixed to obtain a matrix component;
s1.3, adding a curing agent into the matrix component according to the proportion shown in the table 2, and continuously stirring until the curing agent is uniformly mixed to obtain the coating adopted by the first anticorrosive coating;
the preparation method of the paint adopted by the second anticorrosive coating comprises the following steps:
s2.1, uniformly mixing the oxidized polyethylene wax emulsion and the dimethyl silicone oil according to the proportion to obtain a premix, wherein the weight ratio of the oxidized polyethylene wax emulsion to the dimethyl silicone oil is 3.5: 1.5;
s2.2, stirring the pre-mixture for 20min at a stirring speed of 250rad/min to obtain an intermediate mixture;
s2.3, stirring the intermediate mixture for 45min at a stirring speed of 900rad/min to obtain a modified wax emulsion;
s2.4, stirring the modified wax emulsion and the water-soluble acrylic resin until the modified wax emulsion and the water-soluble acrylic resin are uniformly mixed to obtain the alkali-resistant preservative;
s2.5, stirring the alkali-resistant preservative and the setting agent until the alkali-resistant preservative and the setting agent are uniformly mixed to obtain the coating used for the second anticorrosive coating.
Example 2
A processing method for prolonging the service life of a foundation pit supporting structure after being in service for a long time is different from that of the processing method in embodiment 1 in that:
the spraying thickness of the first anticorrosive coating is 0.5 mm;
the spraying thickness of the second anticorrosive layer is 0.2 mm;
s1.1, the molecular weight of the polyacrylamide in the step is 1000 ten thousand;
s1.2, the average particle size of calcium carbonate in the step is 100 meshes;
s2.1, the weight ratio of the oxidized polyethylene wax emulsion to the dimethyl silicone oil in the step is 4: 1;
s2.2, stirring the pre-mixture for 30min at a stirring speed of 200rad/min to obtain an intermediate mixture;
and S2.3, stirring the intermediate mixture for 60min at a stirring speed of 850rad/min to obtain the modified wax emulsion.
Example 3
A processing method for prolonging the service life of a foundation pit supporting structure after being in service for a long time is different from that of the processing method in embodiment 1 in that:
the spraying thickness of the first anticorrosive coating is 0.4 mm;
the spraying thickness of the second anticorrosive layer is 0.4 mm;
s1.1, the molecular weight of the polyacrylamide in the step is 1500 ten thousand;
s1.2, the average particle size of calcium carbonate in the step is 200 meshes;
s2.1, the weight ratio of the oxidized polyethylene wax emulsion to the dimethyl silicone oil in the step is 3: 2;
s2.2, stirring the pre-mixture for 10min at the stirring speed of 300rad/min to obtain an intermediate mixture;
and S2.3, stirring the intermediate mixture for 30min at a stirring speed of 950rad/min to obtain the modified wax emulsion.
Example 4
A processing method for prolonging the service life of a foundation pit supporting structure after being in service for a long time is different from that of the processing method in embodiment 1 in that:
s2.2, stirring the pre-mixture for 20min at a stirring speed of 100rad/min to obtain an intermediate mixture;
and S2.3, stirring the intermediate mixture for 45min at the stirring speed of 550rad/min to obtain the modified wax emulsion.
Example 5
A processing method for prolonging the service life of a foundation pit supporting structure after being in service for a long time is different from that of the processing method in embodiment 1 in that:
s2.2, stirring the pre-mixture for 20min at a stirring speed of 500rad/min to obtain an intermediate mixture;
and S2.3, stirring the intermediate mixture for 45min at a stirring speed of 1500rad/min to obtain the modified wax emulsion.
Example 6
A processing method for prolonging the service life of a foundation pit supporting structure after being in service for a long time is different from that of the processing method in embodiment 1 in that:
s2.2, stirring the pre-mixture for 45min at the stirring speed of 900rad/min to obtain an intermediate mixture;
and S2.3, stirring the intermediate mixture for 20min at a stirring speed of 250rad/min to obtain the modified wax emulsion.
Example 7
A processing method for prolonging the service life of a foundation pit supporting structure after being in service for a long time is different from that of the processing method in embodiment 1 in that:
the average particle size of the calcium carbonate in step S1.2 is 50 mesh.
Example 8
A processing method for prolonging the service life of a foundation pit supporting structure after being in service for a long time is different from that of the processing method in embodiment 1 in that:
the average particle size of the calcium carbonate in step S1.2 is 500 meshes.
Example 9
A processing method for prolonging the service life of a foundation pit supporting structure after being in service for a long time is different from that of the processing method in embodiment 1 in that:
the molecular weight of the polyacrylamide in step S1.1 is 500 ten thousand.
Example 10
A processing method for prolonging the service life of a foundation pit supporting structure after being in service for a long time is different from that of the processing method in embodiment 1 in that:
the molecular weight of the polyacrylamide in step S1.1 is 2000 ten thousand.
Comparative example
Comparative example 1
A treatment method for prolonging the service life of a foundation pit supporting structure after being in service for a long time comprises the following steps:
uniformly spraying an aqueous polyurethane coating on the surface of the foundation pit supporting structure, and curing to obtain an aqueous polyurethane coating, wherein the spraying thickness of the aqueous polyurethane coating is 0.75 mm;
the waterborne polyurethane coating is prepared by uniformly stirring a waterborne polyurethane dispersion, an acrylic emulsion, a system filler, a film-forming aid, a thickening agent.
Comparative example 2
A processing method for prolonging the service life of a foundation pit supporting structure after being in service for a long time is different from that of the processing method in embodiment 1 in that:
the dimethyl silicone oil in the step S2.1 is replaced by an equal amount of oxidized polyethylene wax emulsion.
Comparative example 3
A processing method for prolonging the service life of a foundation pit supporting structure after being in service for a long time is different from that of the processing method in embodiment 1 in that:
and (2) replacing the oxidized polyethylene wax emulsion in the step (S2.1) by the same amount of dimethyl silicone oil.
Comparative example 4
A processing method for prolonging the service life of a foundation pit supporting structure after being in service for a long time is different from that of the processing method in embodiment 1 in that:
and 2.1, the weight ratio of the oxidized polyethylene wax emulsion to the dimethyl silicone oil in the step S2.1 is 1: 1.
Comparative example 5
A processing method for prolonging the service life of a foundation pit supporting structure after being in service for a long time is different from that of the processing method in embodiment 1 in that:
and 2.1, the weight ratio of the oxidized polyethylene wax emulsion to the dimethyl silicone oil in the step S2.1 is 9: 1.
Comparative example 6
A processing method for prolonging the service life of a foundation pit supporting structure after being in service for a long time is different from that of the processing method in embodiment 1 in that:
in the step S2.2, no water-soluble acrylic resin is added.
Performance test
Sample to be tested 1: the method in example 1 is adopted to spray an anticorrosive coating on the test plate to prepare a sample 1 to be tested.
Sample to be tested 2: and spraying an anticorrosive coating on the test plate by adopting the method in the embodiment 2 to prepare a sample 2 to be tested.
Sample to be tested 3: the method in example 3 is adopted to spray the anticorrosive coating on the test plate, and the sample 3 to be tested is prepared.
Sample to be tested 4: and spraying an anticorrosive coating on the test plate by adopting the method in the embodiment 4 to prepare a sample 4 to be tested.
Sample to be tested 5: the method in example 5 is adopted to spray the anticorrosive coating on the test plate, and the sample 5 to be tested is prepared.
Sample to be tested 6: the method in example 6 is adopted to spray the anticorrosive coating on the test plate to prepare the sample 6 to be tested.
Sample to be tested 7: the method in example 7 was used to spray an anticorrosive coating on the test panel to produce a test sample 7.
Sample to be tested 8: the method in example 8 is adopted to spray the anticorrosive coating on the test plate to prepare a sample 8 to be tested.
Sample to be tested 9: the method in example 9 was used to spray an anticorrosive coating on the test panel to produce a test sample 9.
Sample to be tested 10: the method in example 10 was used to spray an anticorrosive coating on the test panel to produce a test sample 10.
Sample to be tested 11: and spraying the anticorrosive coating on the test plate by adopting the method in the comparative example 1 to prepare the sample 11 to be tested.
Sample to be tested 12: and spraying the anticorrosive coating on the test plate by adopting the method in the comparative example 2 to prepare the sample 12 to be tested.
Sample to be tested 13: and spraying the anticorrosive coating on the test plate by adopting the method in the comparative example 3 to prepare the test sample 13 to be tested.
Sample to be tested 14: and spraying the anticorrosive coating on the test plate by adopting the method in the comparative example 4 to prepare the sample 14 to be tested.
15 parts of a sample to be tested: and spraying the anticorrosive coating on the test plate by adopting the method in the comparative example 5 to prepare the sample 15 to be tested.
Sample to be tested 16: and spraying the anticorrosive coating on the test plate by adopting the method in the comparative example 6 to prepare the sample 16 to be tested.
The material of the test boards in the above samples 1-16 to be tested is consistent with that of the foundation pit supporting structure 1, the size of each test board is 150mm x 70mm, and the thickness is 5 mm.
Alkali resistance test experiment: after the test board is sprayed with the anticorrosive coating, the test board sprayed with the anticorrosive coating is placed in the same environment for 5 days to prepare a test sample to be tested, each test sample is treated according to the method in GB/T9265 plus 2009 'determination of alkali resistance of building coating', and then the corrosion resistance of each test sample is evaluated according to GB/T1766 plus 2008 'rating method for aging of colored paint and varnish coating', wherein the detection results are shown in the following table 3.
TABLE 3 Performance test results
Item Test specimen 1 Sample 2 to be tested Sample to be tested 3 Sample to be tested 4 Sample to be tested 5 Sample to be tested 6 Sample to be tested 7 Sample to be tested 8
Color change rating 1 1 1 3 3 3 2 2
Scale of area of exfoliation 1 1 1 3 3 3 2 2
Item Sample to be tested 9 Test specimen 10 Sample to be tested 11 Sample to be tested 12 Test specimen 13 Sample to be tested 14 Test specimen 15 to be tested Sample 16 to be measured
Color change rating 2 2 5 5 5 4 4 2
Scale of area of exfoliation 2 2 5 5 5 5 5 2
Wherein, the color change grade is as follows: the test is carried out according to the instrumental determination method in GB/T1766-2008 rating method for the aging of coatings of paints and varnishes, wherein "0" represents a color difference value of not more than 1.5, "1" represents a color difference value of 1.6-3.0, "2" represents a color difference value of 3.1-6.0, "3" represents a color difference value of 6.1-9.0, "4" represents a color difference value of 9.1-12.0, and "5" represents a color difference value of > 12.0%.
Peeling area rating: "0" represents the peeled area of 0%, "1" represents the peeled area of 0.1% or less, "2" represents the peeled area of 0.3% or less, "3" represents the peeled area of 1% or less, "4" represents the peeled area of 3% or less, and "5" represents the peeled area of > 15%.
According to the comparison of the examples 1 to 3 and the comparative example 1 with the data in the samples to be tested 1 to 3 and the sample to be tested 11 in the table 3, when the anticorrosive coating in the examples 1 to 3 in the application is used for protecting the test plate, the color change grade and the peeling area grade of the test plate are both 1, and the color change grade and the peeling area grade of the test plate sprayed with the aqueous polyurethane coating in the related technology are both 5, which indicates that the aqueous anticorrosive coating in the application is better in alkali resistance than the aqueous polyurethane coating in the related technology, i.e., the aqueous anticorrosive coating in the application can better protect the foundation pit supporting structure, is beneficial to prolonging the service life of the foundation pit supporting structure, and enhances the safety performance of the foundation pit supporting structure after being in service for a long time.
According to the comparison of the data in the examples 1 and 4-6 and the samples 1 and 4-6 in the table 3, when the modified wax emulsion is prepared at different stirring rates, the alkali resistance of the aqueous anti-corrosion coating changes, wherein after the pre-mixture is stirred at a stirring rate of 200-.
According to the comparison of the data in the examples 1-3 and 7-8 and the samples 1-3 and 7-8 to be tested in the table 3, the average particle size of the calcium carbonate is changed, when the average particle size of the calcium carbonate exceeds the range of 100-.
According to the comparison of the data in the example 1 and the example 9-10 and the test sample 1 and the test sample 9-10 in the table 3, it can be known that the molecular weight of the polyacrylamide is changed, when the molecular weight of the polyacrylamide exceeds the range of 1000-.
According to the comparison of the example 1 and the comparative examples 2 to 3 with the data in the test sample 1 and the test samples 12 to 13 shown in table 3, when the preparation method of the modified wax emulsion is not changed and the oxidized polyethylene wax emulsion is replaced by the same amount of dimethicone or the oxidized polyethylene wax emulsion is replaced by the same amount of dimethicone, the alkali resistance effect of the aqueous anticorrosive coating prepared from the obtained modified wax emulsion is weakened, which shows that the dimethicone and the oxidized polyethylene wax emulsion have a synergistic effect and can improve the alkali resistance effect of the aqueous anticorrosive coating, so that the foundation pit supporting structure is better protected, the service life of the foundation pit supporting structure is prolonged, and the safety performance of the foundation pit supporting structure after being in service for a long time is enhanced.
According to the comparison between the data in example 1 and comparative examples 4 to 5 and the data in the test sample 1 and the test samples 14 to 15 in Table 3, the weight ratio range of the oxidized polyethylene wax emulsion to the dimethicone is (3-4): (1-2), the alkali resistance effect of the aqueous anticorrosive coating prepared from the modified wax emulsion is better, and when the weight ratio of the oxidized polyethylene wax emulsion to the dimethyl silicone oil exceeds (3-4): in the range of (1-2), the alkali resistance effect of the aqueous anticorrosive coating prepared from the modified wax emulsion is greatly reduced.
According to the comparison between the data in the example 1 and the data in the comparative example 6 and the data in the test sample 1 and the test sample 16 to be tested in the table 3, the addition of the water-soluble acrylic resin can improve the alkali resistance effect of the water-based anticorrosive coating, so that the foundation pit supporting structure can be better protected, the service life of the foundation pit supporting structure can be further prolonged, and the safety performance of the foundation pit supporting structure after being in service for a long time can be enhanced.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims (10)

1. A treatment method for prolonging the service life of a foundation pit supporting structure after being in service for a long time is characterized by comprising the following steps: the method comprises the following steps:
performing anticorrosive treatment on the foundation pit supporting structure: uniformly spraying an anticorrosive coating on the surface of the foundation pit supporting structure;
the anti-corrosion coating comprises a first anti-corrosion coating attached to the surface of the foundation pit supporting structure and a second anti-corrosion coating attached to the surface of the first anti-corrosion coating;
the paint adopted by the first anticorrosive coating is prepared from the following raw materials in parts by weight:
aqueous polyurethane: 75-85 parts of
Calcium carbonate: 6-10 parts of
Dispersing agent: 0.5 to 1 portion
Polysiloxane antifoaming agent: 0.03 to 0.05 portion
Polyacrylamide: 0.001 to 0.002 portion
Curing agent: 15-20 parts of
Water: 20-30 parts of
The paint adopted by the second anticorrosive coating is prepared from the following raw materials in parts by weight:
modified wax emulsion: 40-50 parts of
Water-soluble acrylic resin: 6 to 8 portions of
Setting agent: 3-5 parts of
The modified wax emulsion comprises oxidized polyethylene wax emulsion and dimethyl silicone oil, wherein the weight ratio of the oxidized polyethylene wax emulsion to the dimethyl silicone oil is (3-4): (1-2).
2. The treatment method for prolonging the service life of the foundation pit supporting structure after being in service for a long time according to claim 1, wherein the treatment method comprises the following steps: the preparation method of the modified wax emulsion comprises the following steps:
uniformly mixing the oxidized polyethylene wax emulsion and the dimethyl silicone oil according to the proportion to obtain a premix;
stirring the pre-mixture for 10-30min at the stirring speed of 200-;
stirring the intermediate mixture for 30-60min at a stirring speed of 850-.
3. The treatment method for prolonging the service life of the foundation pit supporting structure after being in service for a long time according to claim 1, wherein the treatment method comprises the following steps: the preparation method of the paint adopted by the first anticorrosive coating is as follows:
dissolving polyacrylamide in water to prepare a polyacrylamide aqueous solution;
adding waterborne polyurethane, calcium carbonate, a dispersing agent and a polysiloxane antifoaming agent into the polyacrylamide aqueous solution, and stirring until the materials are uniformly mixed to obtain a matrix component;
and adding a curing agent into the matrix component, and continuously stirring until the curing agent is uniformly mixed to obtain the coating adopted by the first anticorrosive coating.
4. The treatment method for prolonging the service life of the foundation pit supporting structure after being in service for a long time according to claim 1, wherein the treatment method comprises the following steps: the preparation method of the paint adopted by the second anticorrosive coating is as follows:
stirring the modified wax emulsion and the water-soluble acrylic resin until the modified wax emulsion and the water-soluble acrylic resin are uniformly mixed to obtain the alkali-resistant preservative;
and stirring the alkali-resistant preservative and the setting agent until the alkali-resistant preservative and the setting agent are uniformly mixed to obtain the coating used for the second anticorrosive coating.
5. The treatment method for prolonging the service life of the foundation pit supporting structure after being in service for a long time according to claim 1, wherein the treatment method comprises the following steps: the spraying method of the anticorrosive coating in the foundation pit supporting structure comprises the following steps:
spraying a first anticorrosive coating: uniformly spraying the prepared first anticorrosive coating on a foundation pit supporting structure, and curing to obtain a first anticorrosive coating;
spraying a second anticorrosive coating: and uniformly spraying the prepared second anticorrosive coating on the first anticorrosive coating, and airing to obtain the second anticorrosive coating.
6. The treatment method for prolonging the service life of the foundation pit supporting structure after being in service for a long time according to claim 1, wherein the treatment method comprises the following steps: the thickness of the first anti-corrosion coating is 0.5-1mm, and the thickness of the second anti-corrosion coating is 0.2-0.4 mm.
7. The treatment method for prolonging the service life of the foundation pit supporting structure after being in service for a long time according to claim 1, wherein the treatment method comprises the following steps: the average particle size of the calcium carbonate is in the range of 100-200 meshes.
8. The treatment method for prolonging the service life of the foundation pit supporting structure after being in service for a long time according to claim 1, wherein the treatment method comprises the following steps: the dispersant is one or a combination of more of polyethylene glycol 200 and polyethylene glycol 400.
9. The treatment method for prolonging the service life of the foundation pit supporting structure after being in service for a long time according to claim 1, wherein the treatment method comprises the following steps: the molecular weight of the polyacrylamide is 1000-1500 ten thousand.
10. The treatment method for prolonging the service life of the foundation pit supporting structure after being in service for a long time according to claim 1, wherein the treatment method comprises the following steps: the curing agent and the setting agent are any one or a combination of polyamide and alicyclic polyamine.
CN202011055334.0A 2020-09-29 2020-09-29 Treatment method for prolonging service life of foundation pit supporting structure after being in service for long time Active CN112221909B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011055334.0A CN112221909B (en) 2020-09-29 2020-09-29 Treatment method for prolonging service life of foundation pit supporting structure after being in service for long time

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011055334.0A CN112221909B (en) 2020-09-29 2020-09-29 Treatment method for prolonging service life of foundation pit supporting structure after being in service for long time

Publications (2)

Publication Number Publication Date
CN112221909A true CN112221909A (en) 2021-01-15
CN112221909B CN112221909B (en) 2022-06-07

Family

ID=74119679

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011055334.0A Active CN112221909B (en) 2020-09-29 2020-09-29 Treatment method for prolonging service life of foundation pit supporting structure after being in service for long time

Country Status (1)

Country Link
CN (1) CN112221909B (en)

Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110086174A1 (en) * 2009-10-12 2011-04-14 Han To Industry Co., Ltd Paint composition including nano-ceramic and polymer resin against neutralization and salt damage of concrete and method for waterproof and anticorrosion using the same
US20120270968A1 (en) * 2009-09-29 2012-10-25 E/I Du Pont De Nemours and Company Anticorrosion coating composition, an anticorrosion film and an anticorrosive article
CN102974520A (en) * 2012-10-31 2013-03-20 广州擎天实业有限公司 Coating process applying water-based paint to metal parts of construction machinery
CN107151518A (en) * 2017-05-23 2017-09-12 青岛辰达生物科技有限公司 It is a kind of for water paint of corrosive protection of aluminium alloy and its preparation method and application
CN107282388A (en) * 2017-06-06 2017-10-24 青岛明珠钢结构有限公司 A kind of anticorrosion of steel structure construction technique
CN107556850A (en) * 2017-09-21 2018-01-09 苏州振振好新型建材科技有限公司 A kind of antifouling elastic coating of ship
CN107629673A (en) * 2017-09-28 2018-01-26 宁波帅特龙集团有限公司 The coating material and its coating process of a kind of high intensity
CN108441087A (en) * 2018-02-28 2018-08-24 广东至诚化学工业有限公司 A kind of impervious pipeline of anti-corrosion and preparation method thereof
CN109423081A (en) * 2017-06-23 2019-03-05 镇江瑞德新材料科技研发有限公司 A kind of manufacturing method and application thereof of metal protection coating
CN109825122A (en) * 2018-11-28 2019-05-31 首钢集团有限公司 A kind of steel construction low prepared surface anti-corrosion clear coat and coating process
JP2019108457A (en) * 2017-12-18 2019-07-04 日立化成株式会社 Light-reflecting thermosetting resin tablet, optical semiconductor element mounting board, method for manufacture thereof, and optical semiconductor device
CN110170440A (en) * 2019-06-11 2019-08-27 天津磊峰实业有限公司 A kind of spraying process of automobile parts
US20200102461A1 (en) * 2018-09-28 2020-04-02 Seungho HAN Paint composition for preventing corrosion and improving durability of a structure, and process for forming coating layer using the same
CN110961330A (en) * 2019-11-28 2020-04-07 广州市敬业金属实业有限公司 Treatment method of self-cleaning iron art rail
CN210595882U (en) * 2019-07-09 2020-05-22 江苏山力漆业有限公司 Graphene modified waterborne epoxy heavy-duty anticorrosive paint
CN111250375A (en) * 2020-02-27 2020-06-09 中国铁建重工集团股份有限公司 Water-based paint coating process for thick steel plate
CN210906826U (en) * 2019-05-16 2020-07-03 盘锦天泉海实业有限公司 Water-based alkyd antirust primer coating structure
CN111662583A (en) * 2019-03-08 2020-09-15 武汉叁木汽车部件有限公司 Aluminum foil with corrosion resistance function and manufacturing process thereof

Patent Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120270968A1 (en) * 2009-09-29 2012-10-25 E/I Du Pont De Nemours and Company Anticorrosion coating composition, an anticorrosion film and an anticorrosive article
US20110086174A1 (en) * 2009-10-12 2011-04-14 Han To Industry Co., Ltd Paint composition including nano-ceramic and polymer resin against neutralization and salt damage of concrete and method for waterproof and anticorrosion using the same
CN102974520A (en) * 2012-10-31 2013-03-20 广州擎天实业有限公司 Coating process applying water-based paint to metal parts of construction machinery
CN107151518A (en) * 2017-05-23 2017-09-12 青岛辰达生物科技有限公司 It is a kind of for water paint of corrosive protection of aluminium alloy and its preparation method and application
CN107282388A (en) * 2017-06-06 2017-10-24 青岛明珠钢结构有限公司 A kind of anticorrosion of steel structure construction technique
CN109423081A (en) * 2017-06-23 2019-03-05 镇江瑞德新材料科技研发有限公司 A kind of manufacturing method and application thereof of metal protection coating
CN107556850A (en) * 2017-09-21 2018-01-09 苏州振振好新型建材科技有限公司 A kind of antifouling elastic coating of ship
CN107629673A (en) * 2017-09-28 2018-01-26 宁波帅特龙集团有限公司 The coating material and its coating process of a kind of high intensity
JP2019108457A (en) * 2017-12-18 2019-07-04 日立化成株式会社 Light-reflecting thermosetting resin tablet, optical semiconductor element mounting board, method for manufacture thereof, and optical semiconductor device
CN108441087A (en) * 2018-02-28 2018-08-24 广东至诚化学工业有限公司 A kind of impervious pipeline of anti-corrosion and preparation method thereof
US20200102461A1 (en) * 2018-09-28 2020-04-02 Seungho HAN Paint composition for preventing corrosion and improving durability of a structure, and process for forming coating layer using the same
CN109825122A (en) * 2018-11-28 2019-05-31 首钢集团有限公司 A kind of steel construction low prepared surface anti-corrosion clear coat and coating process
CN111662583A (en) * 2019-03-08 2020-09-15 武汉叁木汽车部件有限公司 Aluminum foil with corrosion resistance function and manufacturing process thereof
CN210906826U (en) * 2019-05-16 2020-07-03 盘锦天泉海实业有限公司 Water-based alkyd antirust primer coating structure
CN110170440A (en) * 2019-06-11 2019-08-27 天津磊峰实业有限公司 A kind of spraying process of automobile parts
CN210595882U (en) * 2019-07-09 2020-05-22 江苏山力漆业有限公司 Graphene modified waterborne epoxy heavy-duty anticorrosive paint
CN110961330A (en) * 2019-11-28 2020-04-07 广州市敬业金属实业有限公司 Treatment method of self-cleaning iron art rail
CN111250375A (en) * 2020-02-27 2020-06-09 中国铁建重工集团股份有限公司 Water-based paint coating process for thick steel plate

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
刘本华等: "炼化钢结构水性环保耐候防腐蚀涂料体系研究", 《现代涂料与涂装》, no. 12, 20 December 2019 (2019-12-20), pages 25 - 28 *
胡晓珍: "新型纳米无机颗粒水性分散体防腐涂料在高铁站钢结构中的应用", 《绿色建筑》, no. 03, 20 May 2018 (2018-05-20), pages 106 - 110 *

Also Published As

Publication number Publication date
CN112221909B (en) 2022-06-07

Similar Documents

Publication Publication Date Title
CN106221458B (en) Special anticorrosive water paint for steel structure and preparation method thereof
CN1891771B (en) Epoxy curing agent emulsion for water-based epoxy coating, and its preparing method
CN104356884A (en) Low-temperature quick-drying water-based primer-topcoat protective paint used for elevator track and preparation method thereof
CN101386765B (en) Epoxy priming lacquer and method of use thereof
CN109880484B (en) Water-based epoxy thick paste anticorrosive paint and preparation method and application thereof
CN105111886A (en) Water-based epoxy multifunctional steel structure paint and preparation method thereof
CN113402952B (en) Two-component water-based epoxy silver powder paint and preparation method and application thereof
CN102911544B (en) Modified epoxy solvent-free coating
CN114196290A (en) Industrial water-based paint coating and application method thereof
CN104530944A (en) Preparation method of ultrahigh-solid-content super-fast-drying anticorrosion primer
CN101851462B (en) High-solid-content wear-resistant paint for wind power generators, and preparation method and application thereof
CN107177277A (en) A kind of container watersoluble metal heavy anti-corrosion epoxy zinc rich primer and preparation method thereof
CN108531033B (en) Dispersion type water-based epoxy zinc alkene rust-proof heavy-duty anti-corrosive primer
CN112745722A (en) High-adhesion water-based vinylidene chloride metal paint and preparation method thereof
CN111253825B (en) Water-based acrylic acid graft modified polysiloxane coating, preparation method and application
CN108641543B (en) Marine anticorrosive paint based on liquid metal and preparation method thereof
CN112221909B (en) Treatment method for prolonging service life of foundation pit supporting structure after being in service for long time
CN107286803A (en) The environment-friendly type aqueous protective paint of engineering derrick crane and preparation method
CN115746659B (en) High-solid wear-resistant epoxy glass flake coating and preparation method thereof
CN108822705A (en) A kind of one-component salt spray resistance water paint and preparation method thereof
CN107099218A (en) A kind of high solid selfreparing corrosion-resistant epoxy paint and preparation method thereof
CN105255339A (en) Aqueous polyurethane paint for steel structure and preparation method of aqueous polyurethane paint
CN107083145A (en) Aqueous high molecular alloy heavy antisepsis priming paint
CN111518440A (en) Water-soluble paint for oil field oil pumping pipe and preparation method thereof
CN105368241A (en) Anticorrosive paint composition containing self-emulsifying curing agent and preparation method of anticorrosive paint

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant