CN113025171A - Fluorinated silicone glass flake anticorrosion structure and technology for sewage and chemical water tank - Google Patents
Fluorinated silicone glass flake anticorrosion structure and technology for sewage and chemical water tank Download PDFInfo
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- CN113025171A CN113025171A CN202110290918.4A CN202110290918A CN113025171A CN 113025171 A CN113025171 A CN 113025171A CN 202110290918 A CN202110290918 A CN 202110290918A CN 113025171 A CN113025171 A CN 113025171A
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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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/02—Polyureas
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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
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
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Abstract
The invention relates to the technical field of anticorrosive coatings, in particular to a fluorinated silicate glass flake anticorrosive structure and an anticorrosive process for a sewage and chemical water tank. The anticorrosion structure comprises a base layer, an intermediate layer and a reinforced protective layer; the base layer is made of fluorosilicone resin with the thickness of 80-100 microns, the middle layer is made of composite coating with the thickness of 80-120 microns, and the reinforcing protective layer is made of composite coating with the thickness of 40-60 microns; the fluorine-silicon resin adopts a resin main chain, small molecular organic silicon and organic fluorine are added, an active NCO group is added, a catalyst is pre-embedded, and the fluorine-silicon resin can be rapidly subjected to a cross-linking reaction in the air to form an Interpenetrating Polymer Network (IPN) and is cured; the composite coating comprises, by weight, 70 parts of fluorosilicone resin, 20 parts of glass flakes, 0.5 part of a thickening agent, 9 parts of carbon fiber powder and 0.5 part of a suspending agent. The anticorrosion structure and the anticorrosion process enhance the anticorrosion performance of the sewage and chemical water tank and prolong the service life of the anticorrosion structure.
Description
Technical Field
The invention relates to the technical field of anticorrosive coatings, in particular to a fluorinated silicate glass flake anticorrosive structure and an anticorrosive process for a sewage and chemical water tank.
Background
Most of the sewage and chemical water tanks used at present are concrete water tanks, and the industrial sewage contains various media, such as acid, alkali, salt, organic matters and the like, which cause serious corrosion to a reinforced concrete structure; meanwhile, domestic sewage, rainwater, microorganisms, chlorine and the like added into the oxidation ditch can also generate certain corrosion effect on the reinforced concrete; in addition, the oxygen concentration in water changes frequently, and concentration difference exists in the same pool, so that concentration cell corrosion can occur. On the other hand, due to the composition and the micro-porous structure of the concrete, the concrete is subjected to leaching corrosion, exchange corrosion and crystallization corrosion, so that the concrete cracks and the reinforcing steel bars are corroded.
Therefore, the anticorrosion protection of the inner wall of a newly-built concrete structure is necessary, and the method of coating the high-performance anticorrosive paint with high adhesive force, weather resistance, impermeability, no toxicity and durability on the concrete surface is the most direct, reliable and simple and feasible method.
Epoxy and ethylene glass flakes are mostly adopted as anticorrosive materials in the prior anticorrosive paint for sewage and chemical water tanks, but the anticorrosive paint cannot be constructed at the temperature below 3 ℃ due to the material characteristics of the anticorrosive paint, the construction timeliness is limited, the anticorrosive paint has poor adhesive force and is fragile and afraid of collision, the construction difficulty is increased, and the epoxy and ethylene glass flakes are inflammable in the construction process and have potential safety hazards.
An anticorrosive structure and an anticorrosive process of fluorinated silica glass flakes of sewage and chemical water tanks with better performance are needed.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a fluorinated silicone glass flake anti-corrosion structure and an anti-corrosion process for a sewage and chemical water tank.
The technical scheme of the invention is as follows:
one of the purposes of the invention is to provide a fluorinated silicate glass flake anti-corrosion structure of a sewage and chemical water tank, which comprises a base layer, an intermediate layer and a reinforced protective layer; the base layer is made of fluorosilicone resin with the thickness of 80-100 microns, the middle layer is made of composite coating with the thickness of 80-120 microns, and the reinforcing protective layer is made of composite coating with the thickness of 40-60 microns; the fluorine-silicon resin adopts a resin main chain, small molecular organic silicon and organic fluorine are added, an active NCO group is added, a catalyst is pre-embedded, and the fluorine-silicon resin can be rapidly subjected to a cross-linking reaction in the air to form an Interpenetrating Polymer Network (IPN) and is cured; the composite coating comprises, by weight, 70 parts of fluorosilicone resin, 20 parts of glass flakes, 0.5 part of a thickening agent, 9 parts of carbon fiber powder and 0.5 part of a suspending agent.
Further, the fluorine-silicon resin is Robao NR-7 fluorine-silicon resin.
Furthermore, the fineness of the glass flakes ranges from 200 meshes to 300 meshes.
Further, the thickener is fumed silica OK 500.
Further, the suspending agent is organic silicon coupling agent KH-550.
The invention also aims to provide a fluorinated silicate glass flake anticorrosion process for sewage and chemical water tanks, which comprises the following steps:
s1, pretreating the water tank, and cleaning impurities and dust on the surface of the water tank;
s2, spraying a base layer: uniformly spraying the Rouba NR-7 fluorosilicone resin twice, wherein the total thickness of the Rouba NR-7 fluorosilicone resin sprayed twice is 80-100 micrometers, and the spraying is carried out again at the same position for more than 15 minutes;
s3, spraying the intermediate layer: the thickness of the composite coating sprayed with the glass flakes containing more than 200 meshes reaches 80 to up to
Spraying with 120 microns, and finishing the spraying in two times;
s4, spraying a reinforced protective layer: spraying composite paint 40-60 microns;
step S3 is performed after step S2 is tack-free, and step S4 is performed after step S3 is tack-free.
Further, in the step S2, the two times of uniform spraying are set to be 20-30 micrometers in first spraying thickness and 50-60 micrometers in second spraying thickness.
Furthermore, the surface dryness is determined by taking the non-sagging as a criterion.
The invention achieves the following beneficial effects:
1. the anticorrosion structure adopted by the embodiment of the invention enhances the anticorrosion performance of the sewage and the chemical tank and prolongs the service life of the anticorrosion structure.
2. The anticorrosion technology adopted by the embodiment of the invention enables the composite coating to react with water molecules in the air in the presence of oxygen, and the cured composite coating can achieve the performance and effect which are comparable to those of ceramics.
3. According to the base material provided by the embodiment of the invention, the resin main chain is adopted, the micromolecular organic silicon and the organic fluorine are added, the permeability is strong, the catalyst is embedded, the anticorrosion process is a chemical reaction process, and a compact protective layer is formed. Different from the physical process of curing and protecting the traditional coating, the material has stronger acid-base salt resistance.
4. The composite coating provided by the embodiment of the invention contains carbon fiber powder, so that the anticorrosive coating has better strength and excellent wear resistance.
5. The composite coating of the embodiment of the invention does not contain flammable solvents and is not flammable. The problem that the traditional coating is combustible is solved, and the construction safety is improved.
Detailed Description
To facilitate understanding of the present invention for those skilled in the art, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides a fluorinated silicone glass flake anti-corrosion structure for a sewage and chemical water tank, which comprises a base layer, an intermediate layer and a reinforcing protective layer; the base layer is made of fluorosilicone resin with the thickness of 80-100 microns, the middle layer is made of composite coating with the thickness of 80-120 microns, and the reinforcing protective layer is made of composite coating with the thickness of 40-60 microns.
The fluorine-silicon resin adopts a resin main chain and is added with micromolecular organic silicon and organic fluorine, so that the permeability, the corrosion resistance and the heat resistance are improved; active NCO groups are added to form chemical bonds with the base material, so that trace moisture on the surface of the base material is consumed, and the adhesive force of the anticorrosive material is improved; the catalyst is pre-embedded, and the fluorosilicone resin can be quickly crosslinked and reacted in the air to form an Interpenetrating Polymer Network (IPN) and is cured, so that the curing time of the material is shortened, the durability of the anticorrosive material is improved, and the anticorrosive material is difficult to degrade under natural conditions.
The fast cross-linking reaction of fluorosilicone resins to form IPN is described:
1. the basic structure is schematic:
the fluorosilicone resin chain and the end group are subjected to NCO transformation to form the following schematic polymer which is an oligomer and is shown as follows:
the network polymer formed after crosslinking is as follows:
2. the catalyst is as follows:
dissolved in acetone to form a solution.
3. The cross-linking reaction is carried out between the modified fluorosilicone resin with NCO end group by the catalyst in the point 2, wherein the catalyst is a cross-linking agent which has catalysis and participates in the reaction, and the three-dimensional polymer of the interpenetrating network is formed.
The composite coating comprises, by weight, 70 parts of fluorosilicone resin, 20 parts of glass flakes, 0.5 part of a thickening agent, 9 parts of carbon fiber powder and 0.5 part of a suspending agent.
Specifically, the fluorosilicone resin is Robao NR-7 fluorosilicone resin.
The fineness of the glass flakes ranges from 200 meshes to 300 meshes.
The thickener is fumed silica OK 500.
The suspending agent is organic silicon coupling agent KH-550.
The embodiment of the invention provides a fluorinated silicone glass flake anticorrosion process for a sewage and chemical water tank, which comprises the following steps:
s1, pretreating the water tank, and cleaning impurities and dust on the surface of the water tank;
s2, spraying a base layer: uniformly spraying the Rouba NR-7 fluorosilicone resin twice, wherein the total thickness of the Rouba NR-7 fluorosilicone resin sprayed twice is 80-100 micrometers, and the spraying is carried out again at the same position for more than 15 minutes; the NR-7 fluorosilicone resin is sprayed twice with the thickness of about 80 microns, wherein the first spraying thickness is 20-30 microns, and the second spraying thickness is 50-60 microns. The thin spraying of the first spraying aims to utilize the strong permeability of the fluorine-silicon anticorrosive paint to permeate into the surface layer of the anticorrosive structure to discharge air so as to avoid bubbles generated by thick coating. Spraying again at the same anticorrosive position at intervals of more than 15 minutes;
s3, spraying the intermediate layer: the thickness of the composite coating containing more than 200 meshes of glass flakes reaches 80-120 microns, and the composite coating is sprayed in two times;
s4, spraying a reinforced protective layer: spraying composite paint 40-60 microns;
step S3 is performed after step S2 is tack-free, and step S4 is performed after step S3 is tack-free.
Specifically, the dryness is determined based on the absence of sagging.
By adopting the anticorrosion process, the composite coating reacts with water molecules in the air in the presence of oxygen, and can achieve the performance and effect which are comparable to those of ceramics after being cured.
The anti-corrosion structure sample is tested according to HG/T4336-2012 glass flake anti-corrosion coating, and the test results of the tested items are shown in the following table.
TABLE 1 anticorrosive structure performance test items and results
As can be seen from the table 1, the protective structure has stable performance and good anticorrosion effect.
The above-described embodiments of the present invention do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (8)
1. An anti-corrosion structure of fluorinated silicone glass flakes in a sewage and chemical water tank is characterized by comprising a base layer, an intermediate layer and a reinforcing protective layer; the base layer is made of fluorosilicone resin with the thickness of 80-100 microns, the middle layer is made of composite coating with the thickness of 80-120 microns, and the reinforcing protective layer is made of composite coating with the thickness of 40-60 microns; the fluorine-silicon resin adopts a resin main chain, small molecular organic silicon and organic fluorine are added, an active NCO group is added, a catalyst is pre-embedded, and the fluorine-silicon resin can be rapidly subjected to a cross-linking reaction in the air to form an Interpenetrating Polymer Network (IPN) and is cured; the composite coating comprises, by weight, 70 parts of fluorosilicone resin, 20 parts of glass flakes, 0.5 part of a thickening agent, 9 parts of carbon fiber powder and 0.5 part of a suspending agent.
2. The fluorinated silicate glass flake anti-corrosion structure of the sewage and chemical water tank as claimed in claim 1, wherein said fluorinated silicate resin is Robao NR-7 fluorinated silicate resin.
3. The fluorinated silicone glass flake anti-corrosion structure of the sewage and chemical pool as claimed in claim 1, wherein the fineness of the glass flakes is in the range of 200-300 meshes.
4. The fluorinated silicate glass flake anticorrosive structure of a sewage and chemical water tank as claimed in claim 1, wherein the thickener is fumed silica OK 500.
5. The fluorinated silica glass flake anticorrosive structure of the sewage and chemical water tank as claimed in claim 1, wherein the suspending agent is organic silica coupling agent KH-550.
6. The fluorinated silicate glass flake anticorrosion process for sewage and chemical water tanks as claimed in any one of claims 1 to 5, comprising the following steps:
s1, pretreating the water tank, and cleaning impurities and dust on the surface of the water tank;
s2, spraying a base layer: uniformly spraying the Rouba NR-7 fluorosilicone resin twice, wherein the total thickness of the Rouba NR-7 fluorosilicone resin sprayed twice is 80-100 micrometers, and the spraying is carried out again at the same position for more than 15 minutes;
s3, spraying the intermediate layer: the thickness of the composite coating containing more than 200 meshes of glass flakes reaches 80-120 microns, and the composite coating is sprayed in two times;
s4, spraying a reinforced protective layer: spraying composite paint 40-60 microns;
step S3 is performed after step S2 is tack-free, and step S4 is performed after step S3 is tack-free.
7. The fluorinated silicone glass flake anticorrosion process for sewage and chemical pools as claimed in claim 6, wherein in step S2, the first spraying thickness is 20-30 microns and the second spraying thickness is 50-60 microns.
8. The fluorinated silicone glass flake anticorrosive process of sewage and chemical water tanks, according to claim 6, characterized in that the surface dryness is determined by the standard of no sagging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110290918.4A CN113025171A (en) | 2021-03-18 | 2021-03-18 | Fluorinated silicone glass flake anticorrosion structure and technology for sewage and chemical water tank |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110290918.4A CN113025171A (en) | 2021-03-18 | 2021-03-18 | Fluorinated silicone glass flake anticorrosion structure and technology for sewage and chemical water tank |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103788833A (en) * | 2014-02-11 | 2014-05-14 | 青岛海洋先进材料工程技术中心有限公司 | Organosilicon antiskid anticorrosion deck coating and preparation method thereof |
| CN110467879A (en) * | 2019-08-21 | 2019-11-19 | 青岛罗宝节能科技有限公司 | A kind of fluorine silicon-based glass flake anticorrosive paint |
| CN111036523A (en) * | 2019-11-25 | 2020-04-21 | 青岛泰能科技实业发展有限公司 | Compound corrosion prevention process for desulfurizing tower |
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2021
- 2021-03-18 CN CN202110290918.4A patent/CN113025171A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103788833A (en) * | 2014-02-11 | 2014-05-14 | 青岛海洋先进材料工程技术中心有限公司 | Organosilicon antiskid anticorrosion deck coating and preparation method thereof |
| CN110467879A (en) * | 2019-08-21 | 2019-11-19 | 青岛罗宝节能科技有限公司 | A kind of fluorine silicon-based glass flake anticorrosive paint |
| CN111036523A (en) * | 2019-11-25 | 2020-04-21 | 青岛泰能科技实业发展有限公司 | Compound corrosion prevention process for desulfurizing tower |
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Application publication date: 20210625 |