CN109439089B - Self-curing anti-corrosion protective agent suitable for marine atmospheric environment and preparation and application thereof - Google Patents
Self-curing anti-corrosion protective agent suitable for marine atmospheric environment and preparation and application thereof Download PDFInfo
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- CN109439089B CN109439089B CN201811286921.3A CN201811286921A CN109439089B CN 109439089 B CN109439089 B CN 109439089B CN 201811286921 A CN201811286921 A CN 201811286921A CN 109439089 B CN109439089 B CN 109439089B
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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
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
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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
- C09D7/20—Diluents or solvents
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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
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- 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
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/221—Oxides; Hydroxides of metals of rare earth metal
- C08K2003/2213—Oxides; Hydroxides of metals of rare earth metal of cerium
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- 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
- C08K2201/011—Nanostructured additives
Abstract
The invention belongs to the field of metal corrosion prevention, and particularly relates to a self-curing corrosion prevention protective agent suitable for a marine atmospheric environment, and preparation and application thereof. The self-curing anti-corrosion protective agent comprises, by weight, 57-65% of a basic emulsion, 2-4% of a corrosion-resistant and strength reinforcing agent, 22-29% of a main filler, 2-5% of an emulsion compounding agent and 0-6% of a pigment; the corrosion-resistant and strength reinforcing agent is nano cerium oxide and a silane surface modifier, and the mass ratio of the nano cerium oxide to the silane surface modifier is 1: 0.05. The obtained anti-corrosion protective agent has the characteristics of environmental protection, greenness and no toxicity, and the silane modified nano cerium oxide is added to obtain excellent corrosion resistance and aging resistance, so that the protective effect of the protective agent is greatly improved.
Description
Technical Field
The invention belongs to the field of metal corrosion prevention, and particularly relates to a self-curing corrosion prevention protective agent suitable for a marine atmospheric environment, and preparation and application thereof.
Background
The steel material is widely applied to marine environment as the most common building material. However, since the marine environment has high salinity and high humidity, which is one of the most severe natural environments, corrosion and protection of steel materials in the marine environment are important problems that plague the development of human oceans. At present, in the marine atmospheric environment, the conventional protection means is generally protection of coating, grease and the like, but long-term practice shows that the conventional means cannot provide good protection due to high corrosivity of the marine atmosphere. Especially, organic systems such as a commonly used two-component protective agent and the like have the defects of serious environmental pollution, complex construction and the like, so that the method has important significance for the research of the self-curing anti-corrosion protective agent in the marine atmospheric environment.
Disclosure of Invention
In view of the above problems and the drawbacks of the prior art, the present invention aims to provide a self-curing corrosion-proof protective agent suitable for marine atmospheric environment, and its preparation and application.
In order to realize the purpose, the invention adopts the following technical scheme:
a self-curing anticorrosion protective agent suitable for marine atmospheric environment, the self-curing anticorrosion protective agent is calculated according to the weight percent, 57-65% basic latex emulsion, 2-4% corrosion-resistant and strength reinforcing agent, 22-29% main filling, 2-5% latex emulsion compounding agent and 0-6% pigment; the corrosion-resistant and strength reinforcing agent is nano cerium oxide and a silane surface modifier, and the mass ratio of the nano cerium oxide to the silane surface modifier is 1: 0.05.
The base emulsion is acrylic emulsion; the main fillers are meteorological silica and mica iron oxide; the emulsion compounding agent is alcohol ester twelve; wherein the mass ratio of the meteorological silica to the micaceous iron oxide is 1:1-1: 2.
The self-curing anti-corrosion protective agent comprises the following components in percentage by weight: 60% of base emulsion, 4% of nano cerium oxide, 0.2% of silane surface modifier, 12 wt.% of gas phase silicon dioxide, 17 wt.% of mica iron oxide, 5 wt.% of alcohol ester twelve, and the balance of pigment.
The pigment can be randomly prepared according to the required color, for example, the white color paste can adjust the external protective agent to be white, and the water-based carbon black can adjust the external protective agent to be black.
A self-curing anticorrosion protective agent suitable for marine atmospheric environment is prepared from basic emulsion, anticorrosion and strength reinforcing agent, main filler and emulsion compounding agent through proportional mixing.
The application of the self-curing anti-corrosion protective agent suitable for the marine atmospheric environment is used as the self-curing anti-corrosion protective agent for the marine atmospheric environment.
The invention has the beneficial effects that:
the anti-corrosion protective agent has the characteristics of environmental protection, greenness and no toxicity, and has excellent corrosion resistance, aging resistance, salt resistance and water resistance by adding the nano cerium oxide and the silane surface modifier, and the protective effect of the protective agent is greatly improved by adjusting the ratio of the filler silicon dioxide to the mica iron oxide and adjusting the viscosity of the protective agent;
(1) the invention takes the water-based acrylic emulsion and the alcohol ester dodeca film-forming additive as a basic system to obtain the self-curing performance, and the water-based system is non-toxic and pollution-free.
(2) According to the invention, the silane surface modifier and the nano cerium oxide are added, so that the corrosion resistance and the aging resistance of the protective agent can be further enhanced, and the corrosion protection effect of the protective agent is enhanced.
(3) The invention makes the protective agent easy to coat, not easy to sag and simple in construction process by adjusting the proportion of the filler.
Drawings
FIG. 1 is an optical photograph of a conventional protective agent (A) and a self-curing corrosion protection agent (B) provided by an embodiment of the present invention after soaking in a 3.5% NaCl solution for 24 hours.
FIG. 2 is an optical photograph of the conventional protective agent (A) and the self-curing anticorrosion protective agent (B) provided by the embodiment of the invention after being subjected to ultraviolet aging for 500 h.
Detailed Description
The present invention is further illustrated by the following specific examples, which are intended to provide a more complete understanding of the invention by one of ordinary skill in the art, and are not intended to be limiting in any way.
Example 1:
preparing a self-curing anti-corrosion protective agent: by mass percent, acrylic emulsion 65 wt.%, nano-cerium oxide 2 wt.%, silane surface modifier 0.1 wt.%, gas phase silica 12 wt.%, mica iron oxide 17 wt.%, alcohol ester twelve 2 wt.%, pigment 1.9 wt.%.
Preparation of conventional protective agent: by mass percent, acrylic emulsion 65 wt.%, gas phase silica 12 wt.%, mica iron oxide 17 wt.%, alcohol ester twelve 2 wt.%, and pigment 4 wt.%.
The solid content of the acrylic emulsion is 49%, and the particle size of the nano cerium oxide is 30 nm; the silane surface modifier is purchased from United states Union carbide company, the particle size of the gas phase silica is 100nm, and the pigment is water-based carbon black.
The self-curing anti-corrosion protective agent used for the marine atmospheric environment obtained by the above different protective agents is subjected to a salt water resistance experiment:
after the two protective agents are respectively coated on a glass substrate to form a film, the film is placed in a 3.5% NaCl solution to be soaked for 24 hours, and an optical photo after soaking is shown in figure 1. As can be seen, the conventional protective agent film has the phenomenon of bubbling and peeling from the substrate after being soaked for 24 hours; the protective agent film of the embodiment still keeps complete and has good bonding force with a base after being soaked, and the silane surface modifier and the nano cerium oxide are premixed in the protective agent component shown in fig. 1, so that the nano cerium oxide is fully dispersed, and can be well compatible with acrylic emulsion, and a dispersed and uniform protective agent system is obtained. The self-curing anti-corrosion protective agent has good salt resistance and water resistance, and can be suitable for marine atmospheric environment.
Example 2:
preparing a self-curing anti-corrosion protective agent: by mass percent, acrylic emulsion 63 wt.%, nano-cerium oxide 4 wt.%, silane surface modifier 0.2 wt.%, gas phase silica 12 wt.%, mica iron oxide 17 wt.%, alcohol ester twelve 2 wt.%, pigment 1.8 wt.%.
Preparation of conventional protective agent: by mass percent, acrylic emulsion 60 wt.%, gas phase silica 12 wt.%, mica iron oxide 17 wt.%, alcohol ester twelve 5 wt.%, and pigment 6 wt.%.
The solid content of the acrylic emulsion is 49%, and the particle size of the nano cerium oxide is 20 nm; the silane surface modifier is purchased from United states Union carbide company, the particle size of the gas phase silica is 100nm, and the pigment is water-based carbon black.
The self-curing anti-corrosion protective agent used for the marine atmospheric environment obtained by the above different protective agents is subjected to a salt water resistance experiment:
after the two protective agents are respectively brushed to form a film, the film is placed in an ultraviolet aging tester for 500 hours, and the aging resistance of the film is observed (see figure 2). As shown in fig. 2, the conventional protective agent starts to embrittle and turn yellow after the aging test, while the self-curing corrosion protection agent still maintains good flexibility, bonding force with the substrate and initial appearance. Therefore, the self-curing anti-corrosion protective agent has good aging resistance and corrosion resistance.
The anti-corrosion protective agent has the characteristics of environmental protection, greenness and no toxicity, and has excellent corrosion resistance, aging resistance, salt resistance and water resistance by adding the nano cerium oxide and the silane surface modifier, and the protective effect of the protective agent is greatly improved by adjusting the ratio of the filler silicon dioxide to the mica iron oxide and adjusting the viscosity of the protective agent.
Claims (3)
1. A self-curing anti-corrosion protective agent suitable for marine atmospheric environment is characterized in that: the self-curing anticorrosion protective agent comprises, by weight, 57-65% of a basic emulsion, 2-4% of a corrosion-resistant and strength-enhancing agent, 22-29% of a main filler, 2-5% of an emulsion compounding agent and 0-6% of a pigment; the corrosion-resistant and strength reinforcing agent is nano cerium oxide and a silane surface modifier, and the mass ratio of the nano cerium oxide to the silane surface modifier is 1: 0.05;
the base emulsion is acrylic emulsion; the main fillers are fumed silica and mica iron oxide; the emulsion compounding agent is alcohol ester twelve; wherein the mass ratio of the fumed silica to the mica iron oxide is 1:1-1: 2;
the protective agent is applied to a self-curing anti-corrosion protective agent for a marine atmospheric environment.
2. A method for preparing the self-curing corrosion protection agent suitable for the marine atmospheric environment according to claim 1, which is characterized in that: mixing the basic emulsion, the corrosion-resistant and strength-enhancing agent, the main filler and the emulsion compounding agent uniformly according to the weight percentage.
3. The use of a self-curing corrosion protection agent according to claim 1 for use in a marine atmospheric environment, wherein: the protective agent is applied to a self-curing anti-corrosion protective agent for a marine atmospheric environment.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811286921.3A CN109439089B (en) | 2018-10-31 | 2018-10-31 | Self-curing anti-corrosion protective agent suitable for marine atmospheric environment and preparation and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811286921.3A CN109439089B (en) | 2018-10-31 | 2018-10-31 | Self-curing anti-corrosion protective agent suitable for marine atmospheric environment and preparation and application thereof |
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| Publication Number | Publication Date |
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| CN109439089A CN109439089A (en) | 2019-03-08 |
| CN109439089B true CN109439089B (en) | 2021-05-04 |
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| CN116554720A (en) * | 2023-03-14 | 2023-08-08 | 河南阿尔法工程材料有限公司 | Self-repairing microcapsule of nano cerium oxide doped clay, preparation method of self-repairing microcapsule and anticorrosive paint |
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| CN103589311B (en) * | 2013-10-16 | 2016-06-29 | 国家电网公司 | A kind of preparation method of titanate esters modified nano cerium oxide/polyurethane Composite Coating |
| CN103865348A (en) * | 2014-03-12 | 2014-06-18 | 武汉武大巨成结构股份有限公司 | Water-based silicone-acrylic mica iron oxide anti-corrosion coating |
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