CN113980541A - Organic-inorganic hybrid high-solid anticorrosive paint, and preparation method and application thereof - Google Patents
Organic-inorganic hybrid high-solid anticorrosive paint, and preparation method and application thereof Download PDFInfo
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- CN113980541A CN113980541A CN202111435282.4A CN202111435282A CN113980541A CN 113980541 A CN113980541 A CN 113980541A CN 202111435282 A CN202111435282 A CN 202111435282A CN 113980541 A CN113980541 A CN 113980541A
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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
- C09D153/00—Coating compositions based on block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; 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
- C09D7/40—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
- C09D7/65—Additives macromolecular
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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
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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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
- C08K2003/2265—Oxides; Hydroxides of metals of iron
- C08K2003/2272—Ferric oxide (Fe2O3)
Abstract
The invention provides an organic-inorganic hybrid high-solid anticorrosive paint which is prepared from an organic matter component and an inorganic matter component, wherein the organic matter component comprises the following raw materials in parts by weight: 40-60 parts of organic polymer epoxy resin, 5-10 parts of curing agent, 5-8 parts of organic active diluent and 10-30 parts of first solvent; the inorganic substance component comprises the following raw materials in parts by weight: 5-10 parts of pigment and filler and 10-15 parts of auxiliary agent. Also provides a preparation method and application of the anticorrosive paint. The organic-inorganic hybrid high-solid anticorrosive paint prepared by the invention has simple preparation process and uniform mixing, the organic matter and the inorganic matter carry out crosslinking reaction, the excellent performances of the organic matter and the inorganic matter can be fully exerted, and the common pigment, filler and auxiliary agent are added into the paint, so that the anticorrosive performance can be enhanced; the solid content is high, and the engineering applicability of the composite material can be effectively improved; the corrosion-resistant coating is suitable for power transmission line towers or iron towers which are seriously corroded due to factors such as external moisture, salt fog and the like.
Description
Technical Field
The invention relates to the technical field of anticorrosive coatings, in particular to an organic-inorganic hybrid high-solid anticorrosive coating, a preparation method and application thereof.
Background
In organic environment, researches on polymerization, morphological structure control, functional application and the like of polymers are well mastered and applied; in inorganic environments, studies on the properties of various metal ions, the structural properties of metal products, and the like have also been well known and used. However, with the complexity and changeability of the external environment, the appearances and internal structures of various application materials are changed in a complex way, so that researchers at home and abroad are not limited to the research in a single field any more, but span multiple fields to represent the physical and chemical properties of the materials. In the field of electrical insulation, the action of the external environment causes serious corrosion of electrical equipment, and the simplest and most effective anticorrosion method is to coat an anticorrosion paint. However, with the increasing awareness of environmental protection, high-solid anticorrosive coatings, solvent-free anticorrosive coatings, water-based coatings, and the like have been developed by more and more researchers. In the development process, the instability of the corrosion resistance is always the most important performance index in the performance characterization of the anticorrosive paint.
Therefore, the problem to be solved is to improve the stability of the corrosion resistance of the anticorrosive paint.
Disclosure of Invention
The invention provides an organic-inorganic hybrid high-solid anticorrosive coating, a preparation method and application, and solves the problem of unstable corrosion resistance of the anticorrosive coating in the prior art.
The technical scheme of the invention is realized as follows:
according to a first aspect of embodiments of the present invention, an organic-inorganic hybrid high-solid anticorrosive coating is provided.
In one embodiment, the organic-inorganic hybrid high-solid anticorrosive paint is prepared from an organic component and an inorganic component, wherein,
the organic matter component comprises the following raw materials in parts by weight: 40-60 parts of organic polymer epoxy resin, 5-10 parts of curing agent, 5-8 parts of organic active diluent and 10-30 parts of first solvent;
the inorganic substance component comprises the following raw materials in parts by weight: 5-10 parts of pigment and filler and 10-15 parts of auxiliary agent.
Optionally, the viscosity of the organic polymer epoxy resin is 700-11000 mPa & S.
Optionally, the organic polymer epoxy resin is a polystyrene-polyacrylic acid epoxy resin.
Alternatively, the polystyrene-polyacrylic acid epoxy resin is formed by crosslinking and polymerizing a styrene monomer and an acrylic acid monomer with an epoxy resin under the action of a chain transfer agent to form a block copolymer.
Optionally, the curing agent is curing agent T31 or curing agent CYDHD-531 II.
Optionally, the curing agent has a viscosity of 700 to 11000mPa · S.
Optionally, the organic reactive diluent is HK-66, HELOXY11, HELOXY48, HELOXY62, or HELOXY 505.
Optionally, the first solvent is 1, 4-dioxane or absolute ethanol.
Optionally, the pigment and filler is any one or a combination of several of iron oxide red, titanium dioxide, silicon dioxide and mica iron oxide.
Optionally, the auxiliary agent is a polyether modified siloxane surfactant or an acrylic copolymer aqueous emulsion.
According to a second aspect of the embodiments of the present invention, a method for preparing an organic-inorganic hybrid high-solid anticorrosive paint is provided.
In one embodiment, the preparation method of the organic-inorganic hybrid high-solid anticorrosive paint comprises the following steps:
step one, preparing organic polymer
Adding a chain transfer agent into a second solvent for full dissolution, then adding a chain initiator and a first block polymer monomer, stirring at 60-100 ℃ to obtain a first block polymer solution, and purifying and drying the first block polymer solution to obtain a first block polymer; adding the dried first block polymer into a second solvent for full dissolution, adding a chain initiator and a second block polymer monomer, stirring at 60-100 ℃ to obtain an organic polymer solution, purifying and drying the organic polymer solution to obtain an organic polymer;
step two, preparing organic polymer epoxy resin
Adding the organic polymer obtained in the step one into a second solvent for full dissolution, then adding epoxy resin, a chain transfer agent and a chain initiator, stirring at 40-100 ℃ to obtain an organic polymer epoxy resin solution, and then purifying and drying the organic polymer epoxy resin solution to obtain organic polymer epoxy resin;
step three, preparing organic-inorganic hybrid high-solid anticorrosive paint
And (3) sequentially adding the organic polymer epoxy resin obtained in the step two and the organic active diluent into the first solvent, uniformly mixing, stirring, sequentially adding the pigment, the filler and the auxiliary agent, reacting for 6-8 h, grinding, finally adding the curing agent, and stirring to obtain the organic-inorganic hybrid high-solid anticorrosive paint.
Optionally, the second solvent is 1, 4-dioxane or absolute ethanol.
Optionally, the chain transfer agent is a trithiocarbonate or a dithioester chain transfer agent.
Optionally, the chain initiator is benzoyl peroxide or azobisisobutyronitrile.
Optionally, in the first step, the mass ratio of the chain transfer agent, the second solvent, the chain initiator and the first block polymer monomer is 5-10: 15-40: 1-5: 20-30.
Optionally, in the first step, the mass ratio of the second solvent, the chain initiator and the second block polymer monomer is 15-40: 1-5: 15-25.
Optionally, in the second step, the mass ratio of the organic polymer, the second solvent, the epoxy resin, the chain transfer agent and the chain initiator is 10-25: 15-40: 20-30: 5-10: 1-5.
Optionally, in the first step, the chain transfer agent is added into the second solvent to be fully dissolved, then the chain initiator and the first block polymer monomer are added, the step of stirring is carried out at 60-100 ℃, the dried first block polymer is added into the second solvent to be fully dissolved, the chain initiator and the second block polymer monomer are added, in the step of stirring at 60-100 ℃, the stirring rotation speed is 700-900 rpm, and the stirring time is 6-10 hours.
Optionally, in the second step, the organic polymer obtained in the first step is added into a second solvent to be fully dissolved, then the epoxy resin, the chain transfer agent and the chain initiator are added, and in the step of stirring at 40-100 ℃, the stirring speed is 700-900 rpm, and the stirring time is 30-60 min.
Optionally, in the third step, the organic polymer epoxy resin obtained in the second step and the organic reactive diluent are sequentially added into the first solvent and uniformly mixed, and in the stirring step, the stirring speed is 700-900 rpm, and the stirring time is 20-30 min.
Optionally, in the third step, the curing agent is finally added, and in the stirring step, the stirring speed is 700-900 rpm, and the stirring time is 60-90 min.
Optionally, in the third step, the grinding step is carried out until the fineness is 30-50 μm.
According to a third aspect of the embodiments of the present invention, an application of an organic-inorganic hybrid high-solid anticorrosive paint is provided.
In one embodiment, the organic-inorganic hybrid high-solid anticorrosive paint is applied to a power transmission line iron tower or a tower.
The invention has the beneficial effects that:
1. the organic-inorganic hybrid high-solid anticorrosive paint prepared by the invention has the advantages of simple preparation process, uniform mixing, strong stability, uniform organic and inorganic crosslinking through a conjugated bond between electronic energy levels, capability of fully playing the excellent performances of organic matters and inorganic matters, and capability of enhancing the anticorrosive performance by adding pigments, fillers and auxiliaries into the paint.
2. The organic-inorganic hybrid high-solid anticorrosive coating has high solid content, and can effectively improve the engineering applicability; the corrosion-resistant coating is suitable for power transmission line towers or iron towers which are seriously corroded due to factors such as external moisture, salt fog and the like.
Detailed Description
To make the features and effects of the present invention comprehensible to those having ordinary knowledge in the art, general description and definitions are made with respect to terms and phrases mentioned in the specification and claims. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
In this document, the terms "comprising," "including," "having," "containing," or any other similar term, are intended to be open-ended transitionalphase, which is intended to cover non-exclusive inclusions. For example, a composition or article comprising a plurality of elements is not limited to only those elements recited herein, but may include other elements not expressly listed but generally inherent to such composition or article. In addition, unless expressly stated to the contrary, the term "or" is intended to mean an inclusive "or" rather than an exclusive "or". For example, the condition "a or B" is satisfied in any of the following cases: a is true (or present) and B is false (or not present), a is false (or not present) and B is true (or present), both a and B are true (or present). Furthermore, in this document, the terms "comprising," including, "" having, "" containing, "and" containing "are to be construed as specifically disclosed and to cover both closed and semi-closed conjunctions, such as" consisting of … "and" consisting essentially of ….
All features or conditions defined herein as numerical ranges or percentage ranges are for brevity and convenience only. Accordingly, the description of numerical ranges or percentage ranges should be considered to have covered and specifically disclosed all possible subranges and individual numerical values within the ranges, particularly integer numerical values. For example, a description of a range of "1 to 8" should be considered to have specifically disclosed all subranges such as 1 to 7, 2 to 8, 2 to 6, 3 to 6, 4 to 8, 3 to 8, and so on, particularly subranges bounded by all integer values, and should be considered to have specifically disclosed individual values such as 1, 2, 3, 4, 5, 6, 7, 8, and so on, within the range. Unless otherwise indicated, the foregoing explanatory methods apply to all matters contained in the entire disclosure, whether broad or not.
If an amount or other value or parameter is expressed as a range, preferred range, or a list of upper and lower limits, it is to be understood that all ranges subsumed therein for any pair of that range's upper or preferred value and that range's lower or preferred value, whether or not such ranges are separately disclosed, are specifically disclosed herein. Further, when a range of numerical values is recited herein, unless otherwise stated, the range is intended to include the endpoints thereof, and all integers and fractions within the range.
In this context, numerical values should be understood to have the precision of the number of significant digits of the value, provided that the object of the invention is achieved. For example, the number 40.0 should be understood to cover a range from 39.50 to 40.49. In this document, where Markush group (Markush group) or Option language is used to describe features or examples of the invention, those skilled in the art will recognize that a sub-group of all elements or any individual element within a Markush group or list of options may also be used to describe the invention. For example, if X is described as "selected from the group consisting of1、X2And X3The group "also indicates that X has been fully described as X1Is claimed with X1And/or X2Claim (5). Further, where Markush group or Option terminology is used to describe features or examples of the invention, those skilled in the art will recognize sub-groups of all elements or individual elements within the Markush group or list of optionsAny combination may also be used to describe the invention. Accordingly, for example, if X is described as "selected from the group consisting of1、X2And X3Group consisting of "and Y is described as" selected from Y1、Y2And Y3The group "formed indicates that X has been fully described as X1Or X2Or X3And Y is Y1Or Y2Or Y3Claim (5).
The following detailed description is merely exemplary in nature and is not intended to limit the invention or the application thereof. Furthermore, there is no intention to be bound by any theory presented in the preceding prior art or the summary of the invention or the following detailed description or examples.
Example 1
An organic-inorganic hybrid high-solid anticorrosive paint is prepared from organic and inorganic components,
the organic matter component comprises the following raw materials in parts by weight: 40 parts of polystyrene-polyacrylic acid epoxy resin with the viscosity of 700-11000 mPa & S, 315 parts of curing agent T with the viscosity of 700mPa & S, 10 parts of organic active diluent HK-665 and 10 parts of absolute ethyl alcohol;
the inorganic substance component comprises the following raw materials in parts by weight: 5 parts of iron oxide red and 10 parts of polyether modified silicone oil.
The preparation method of the organic-inorganic hybrid high-solid anticorrosive paint comprises the following steps:
step one, preparing organic polymer
Adding 5 parts of trithiocarbonate into 15 parts of absolute ethyl alcohol for full dissolution, then adding 1 part of benzoyl peroxide and 20 parts of styrene monomer, stirring at 60 ℃, wherein the stirring speed is 700rpm, and the stirring time is 6 hours to obtain a polystyrene solution, and purifying and drying the polystyrene solution to obtain polystyrene; adding the dried polystyrene into 15 parts of absolute ethyl alcohol for full dissolution, adding 1 part of benzoyl peroxide and 15 parts of acrylic acid monomer, stirring at 60 ℃, wherein the stirring speed is 700rpm, and the stirring time is 6 hours, so as to obtain a polystyrene-polyacrylic acid solution, purifying and drying the polystyrene-polyacrylic acid solution, so as to obtain polystyrene-polyacrylic acid;
step two, preparing organic polymer epoxy resin
Adding 10 parts of polystyrene-polyacrylic acid obtained in the step one into 15 parts of absolute ethyl alcohol for full dissolution, then adding 20 parts of epoxy resin E51, 5 parts of trithiocarbonate and 1 part of benzoyl peroxide, stirring at 40 ℃, wherein the stirring speed is 700rpm, and the stirring time is 30min to obtain a polystyrene-polyacrylic acid epoxy resin solution, and then purifying and drying the polystyrene-polyacrylic acid epoxy resin solution to obtain polystyrene-polyacrylic acid epoxy resin;
step three, preparing organic-inorganic hybrid high-solid anticorrosive paint
And (3) sequentially adding the polystyrene-polyacrylic acid epoxy resin obtained in the step two and the organic active diluent HK-66 into absolute ethyl alcohol, uniformly mixing, stirring at the stirring speed of 700rpm for 20min, sequentially adding iron oxide red and polyether modified silicone oil, reacting for 6h, grinding to the fineness of 30 mu m, finally adding a curing agent T31, stirring at the stirring speed of 700rpm for 60min, and obtaining the organic-inorganic hybrid high-solid anticorrosive paint.
Example 2
The organic-inorganic hybrid high-solid anticorrosive paint is prepared from an organic component and an inorganic component, wherein,
the organic matter component comprises the following raw materials in parts by weight: 50 parts of polystyrene-polyacrylic acid epoxy resin with the viscosity of 3000 mPa.S, 6 parts of curing agent CYDHD-531II with the viscosity of 3000 mPa.S, 116 parts of organic active diluent HELOXY and 15 parts of absolute ethyl alcohol;
the inorganic substance component comprises the following raw materials in parts by weight: 6 parts of titanium dioxide and 12 parts of methyl acrylate copolymer emulsion.
The preparation method of the organic-inorganic hybrid high-solid anticorrosive paint comprises the following steps:
step one, preparing organic polymer
Adding 6 parts of trithiocarbonate into 20 parts of absolute ethyl alcohol for full dissolution, then adding 2 parts of benzoyl peroxide and 23 parts of styrene monomer, stirring at 70 ℃, wherein the stirring speed is 800rpm, and the stirring time is 7 hours to obtain a polystyrene solution, and purifying and drying the polystyrene solution to obtain polystyrene; adding the dried polystyrene into 20 parts of absolute ethyl alcohol for full dissolution, adding 2 parts of benzoyl peroxide and 18 parts of acrylic acid monomer, stirring at 70 ℃, wherein the stirring speed is 800rpm, and the stirring time is 7 hours, so as to obtain a polystyrene-polyacrylic acid solution, purifying and drying the polystyrene-polyacrylic acid solution, so as to obtain polystyrene-polyacrylic acid;
step two, preparing organic polymer epoxy resin
Adding 15 parts of polystyrene-polyacrylic acid obtained in the step one into 20 parts of absolute ethyl alcohol for full dissolution, then adding 23 parts of epoxy resin E51, 6 parts of trithiocarbonate and 2 parts of benzoyl peroxide, stirring at 50 ℃, wherein the stirring speed is 800rpm, and the stirring time is 40min, so as to obtain a polystyrene-polyacrylic acid epoxy resin solution, and then purifying and drying the polystyrene-polyacrylic acid epoxy resin solution, so as to obtain polystyrene-polyacrylic acid epoxy resin;
step three, preparing organic-inorganic hybrid high-solid anticorrosive paint
And (3) sequentially adding the polystyrene-polyacrylic acid epoxy resin obtained in the step two and an organic active diluent HELOXY11 into absolute ethyl alcohol, uniformly mixing, stirring at the stirring speed of 800rpm for 20min, sequentially adding titanium dioxide and methyl acrylate copolymer emulsion, reacting for 6h, grinding to the fineness of 30 mu m, finally adding a curing agent CYDHD-531II, stirring at the stirring speed of 800rpm for 60min, and obtaining the organic-inorganic hybrid high-solid anticorrosive paint.
Example 3
The organic-inorganic hybrid high-solid anticorrosive paint is prepared from an organic component and an inorganic component, wherein,
the organic matter component comprises the following raw materials in parts by weight: 50 parts of polystyrene-polyacrylic acid epoxy resin with the viscosity of 6000 mPa.S, 6 parts of curing agent CYDHD-531II with the viscosity of 6000 mPa.S, 486 parts of organic active diluent HELOXY and 20 parts of 1, 4-dioxane;
the inorganic substance component comprises the following raw materials in parts by weight: 6 parts of silicon dioxide and 12 parts of methyl acrylate copolymer emulsion.
The preparation method of the organic-inorganic hybrid high-solid anticorrosive paint comprises the following steps:
adding 7 parts of tert-butyl bisthiobenzoate into 25 parts of 1, 4-dioxane for full dissolution, then adding 3 parts of azobisisobutyronitrile and 25 parts of styrene monomer, stirring at 80 ℃, wherein the stirring speed is 800rpm, and the stirring time is 8 hours, so as to obtain a polystyrene solution, and purifying and drying the polystyrene solution, so as to obtain polystyrene; adding the dried polystyrene into 25 parts of 1, 4-dioxane for full dissolution, adding 3 parts of azodiisobutyronitrile and 20 parts of acrylic acid monomer, stirring at 80 ℃, wherein the stirring speed is 800rpm, and the stirring time is 8 hours to obtain a polystyrene-polyacrylic acid solution, purifying and drying the polystyrene-polyacrylic acid solution to obtain polystyrene-polyacrylic acid;
step two, preparing organic polymer epoxy resin:
adding 18 parts of polystyrene-polyacrylic acid obtained in the step one into 25 parts of 1, 4-dioxane for full dissolution, then adding 25 parts of epoxy resin E44, 7 parts of tert-butyl bisthiobenzoate and 3 parts of azobisisobutyronitrile, stirring at 60 ℃, wherein the stirring speed is 800rpm, and the stirring time is 50min, so as to obtain a polystyrene-polyacrylic acid epoxy resin solution, and then purifying and drying the polystyrene-polyacrylic acid epoxy resin solution, so as to obtain polystyrene-polyacrylic acid epoxy resin;
step three, preparing organic-inorganic hybrid high-solid anticorrosive paint
And (3) sequentially adding the polystyrene-polyacrylic acid epoxy resin obtained in the step two and an organic active diluent HELOXY48 into 1, 4-dioxane, uniformly mixing, stirring at the stirring speed of 800rpm for 20min, sequentially adding silicon dioxide and methyl acrylate copolymer emulsion, reacting for 6h, grinding to the fineness of 40 mu m, finally adding a curing agent CYDHD-531II, stirring at the stirring speed of 800rpm for 70min, and obtaining the organic-inorganic hybrid high-solid anticorrosive coating.
Example 4
The organic-inorganic hybrid high-solid anticorrosive paint is prepared from an organic component and an inorganic component, wherein,
the organic matter component comprises the following raw materials in parts by weight: 60 parts of polystyrene-polyacrylic acid epoxy resin with the viscosity of 8000 mPa.S, 318 parts of curing agent T with the viscosity of 8000 mPa.S, 627 parts of organic active diluent HELOXY 627 parts and 25 parts of absolute ethyl alcohol;
the inorganic substance component comprises the following raw materials in parts by weight: 8 parts of mica iron oxide and 13 parts of polyether modified silicone oil.
The preparation method of the organic-inorganic hybrid high-solid anticorrosive paint comprises the following steps:
step one, preparing an organic polymer:
adding 8 parts of 1-phenethyldithiophenylacetate into 30 parts of absolute ethyl alcohol for full dissolution, then adding 4 parts of benzoyl peroxide and 28 parts of styrene monomer, stirring at 90 ℃, wherein the stirring speed is 800rpm, and the stirring time is 10 hours to obtain a polystyrene solution, and purifying and drying polystyrene to obtain polystyrene; adding the dried polystyrene into 30 parts of absolute ethyl alcohol for full dissolution, adding 4 parts of benzoyl peroxide and 22 parts of acrylic acid monomer, stirring at 90 ℃, wherein the stirring speed is 800rpm, and the stirring time is 10 hours, so as to obtain a polystyrene-polyacrylic acid solution, purifying and drying the polystyrene-polyacrylic acid solution, so as to obtain polystyrene-polyacrylic acid;
step two, preparing organic polymer epoxy resin:
adding 22 parts of polystyrene-polyacrylic acid obtained in the step one into 30 parts of absolute ethyl alcohol for full dissolution, then adding 28 parts of epoxy resin E44, 8 parts of 1-phenethyl dithiophenylacetate and 4 parts of benzoyl peroxide, stirring at 80 ℃, wherein the stirring speed is 800rpm, and the stirring time is 60min, so as to obtain a polystyrene-polyacrylic acid epoxy resin solution, and then purifying and drying the polystyrene-polyacrylic acid epoxy resin solution, so as to obtain polystyrene-polyacrylic acid epoxy resin;
step three, preparing organic-inorganic hybrid high-solid anticorrosive paint
And (3) sequentially adding the polystyrene-polyacrylic acid epoxy resin obtained in the step two and an organic active diluent HELOXY62 into absolute ethyl alcohol, uniformly mixing, stirring, sequentially adding mica iron oxide and polyether modified silicone oil, reacting for 7 hours, grinding to 50 mu m fineness, finally adding a curing agent T31, stirring at the stirring speed of 900rpm for 70min to obtain the organic-inorganic hybrid high-solid anticorrosive paint.
Example 5
The organic-inorganic hybrid high-solid anticorrosive paint is prepared from an organic component and an inorganic component, wherein,
the organic matter component comprises the following raw materials in parts by weight: 60 parts of polystyrene-polyacrylic acid epoxy resin with the viscosity of 11000mPa & S, 10 parts of curing agent CYDHD-531II with the viscosity of 11000mPa & S, 5058 parts of organic active diluent HELOXY 5058 parts and 30 parts of 1, 4-dioxane;
the inorganic substance component comprises the following raw materials in parts by weight: 5 parts of titanium dioxide, 5 parts of silicon dioxide and 15 parts of polyether modified silicone oil.
The preparation method of the organic-inorganic hybrid high-solid anticorrosive paint comprises the following steps:
step one, preparing an organic polymer:
adding 10 parts of trithiocarbonate into 40 parts of 1, 4-dioxane, fully dissolving, then adding 5 parts of azobisisobutyronitrile and 30 parts of styrene monomer, stirring at 100 ℃, wherein the stirring speed is 900rpm, and the stirring time is 10 hours, so as to obtain a polystyrene solution, and purifying and drying the polystyrene solution, so as to obtain polystyrene; adding the dried polystyrene into 40 parts of 1, 4-dioxane for full dissolution, adding 5 parts of azodiisobutyronitrile and 25 parts of acrylic acid monomer, stirring at 100 ℃, wherein the stirring speed is 900rpm, and the stirring time is 10 hours, so as to obtain a polystyrene-polyacrylic acid solution, purifying and drying the polystyrene-polyacrylic acid solution, so as to obtain polystyrene-polyacrylic acid;
step two, preparing organic polymer epoxy resin:
adding 25 parts of polystyrene-polyacrylic acid obtained in the step one into 40 parts of 1, 4-dioxane for full dissolution, then adding 30 parts of epoxy resin E51, 10 parts of trithiocarbonate and 5 parts of azobisisobutyronitrile, stirring at 100 ℃, wherein the stirring speed is 900rpm, and the stirring time is 60min, so as to obtain a polystyrene-polyacrylic acid epoxy resin solution, and then purifying and drying the polystyrene-polyacrylic acid epoxy resin solution, so as to obtain polystyrene-polyacrylic acid epoxy resin;
step three, preparing organic-inorganic hybrid high-solid anticorrosive paint
And (3) sequentially adding the polystyrene-polyacrylic acid epoxy resin obtained in the step two and an organic active diluent HELOXY505 into 1, 4-dioxane, uniformly mixing, stirring at the stirring speed of 900rpm for 30min, sequentially adding titanium dioxide, silicon dioxide and polyether modified silicone oil, reacting for 8h, grinding to the fineness of 50 μm, finally adding a curing agent CYDHD-531II, stirring at the stirring speed of 900rpm for 90min, and thus obtaining the organic-inorganic hybrid high-solid anticorrosive coating.
The organic-inorganic hybrid high-solid anticorrosive coatings obtained in examples 1 to 5 were uniformly mixed, directly coated on a rusted steel plate at 25 ℃ by a spraying method or a brush coating method, cured to obtain a flat, smooth, compact and uniform paint film, and subjected to performance tests, and the results are shown in table 1.
TABLE 1 characterization of coating properties
As can be seen from Table 1, the organic-inorganic hybrid high-solid anticorrosive coating prepared by the invention has high solid content, the adhesive force reaches 7.2MPa, and the engineering applicability of the coating can be effectively improved; the salt spray resistance is 1500h, no bubble, no rust, no crack, no peeling and excellent corrosion resistance, and is suitable for a power transmission line tower or an iron tower which is seriously corroded due to factors such as humidity, salt spray and the like; the content of volatile organic compounds in the coating is low, and the coating meets the requirement of environmental protection.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (16)
1. An organic-inorganic hybrid high-solid anticorrosive paint is characterized by being prepared from an organic component and an inorganic component, wherein,
the organic matter component comprises the following raw materials in parts by weight: 40-60 parts of organic polymer epoxy resin, 5-10 parts of curing agent, 5-8 parts of organic active diluent and 10-30 parts of first solvent;
the inorganic substance component comprises the following raw materials in parts by weight: 5-10 parts of pigment and filler and 10-15 parts of auxiliary agent.
2. The organic-inorganic hybrid high-solid anticorrosive paint according to claim 1, wherein the viscosity of the organic polymer epoxy resin is 700 to 11000 mPa-S.
3. The organic-inorganic hybrid high-solid anticorrosive paint according to claim 1, wherein the organic polymer epoxy resin is polystyrene-polyacrylic acid epoxy resin.
4. The organic-inorganic hybrid high-solid anticorrosive paint according to claim 1, wherein the curing agent is curing agent T31 or curing agent CYDHD-531II, and the viscosity of the curing agent is 700-11000 mPa-S.
5. An organic-inorganic hybrid high-solid anticorrosive paint according to claim 1, characterized in that the organic reactive diluent is HK-66, HELOXY11, HELOXY48, HELOXY62 or HELOXY 505; the first solvent is 1, 4-dioxane or absolute ethyl alcohol.
6. The organic-inorganic hybrid high-solid anticorrosive paint according to claim 1, wherein the pigment and filler is any one or a combination of iron oxide red, titanium dioxide, silicon dioxide and mica iron oxide.
7. The organic-inorganic hybrid high-solid anticorrosive paint according to claim 1, wherein the auxiliary agent is polyether modified siloxane surfactant or acrylic copolymer aqueous emulsion.
8. A method for preparing an organic-inorganic hybrid high-solid anticorrosive paint according to any one of claims 1 to 7, characterized by comprising the steps of:
step one, preparing organic polymer
Adding a chain transfer agent into a second solvent for full dissolution, then adding a chain initiator and a first block polymer monomer, stirring at 60-100 ℃ to obtain a first block polymer solution, and purifying and drying the first block polymer solution to obtain a first block polymer; adding the dried first block polymer into a second solvent for full dissolution, adding a chain initiator and a second block polymer monomer, stirring at 60-100 ℃ to obtain an organic polymer solution, purifying and drying the organic polymer solution to obtain an organic polymer;
step two, preparing organic polymer epoxy resin
Adding the organic polymer obtained in the step one into a second solvent for full dissolution, then adding epoxy resin, a chain transfer agent and a chain initiator, stirring at 40-100 ℃ to obtain an organic polymer epoxy resin solution, and then purifying and drying the organic polymer epoxy resin solution to obtain organic polymer epoxy resin;
step three, preparing organic-inorganic hybrid high-solid anticorrosive paint
And (3) sequentially adding the organic polymer epoxy resin obtained in the step two and the organic active diluent into the first solvent, uniformly mixing, stirring, sequentially adding the pigment, the filler and the auxiliary agent, reacting for 6-8 h, grinding, finally adding the curing agent, and stirring to obtain the organic-inorganic hybrid high-solid anticorrosive paint.
9. The method for preparing an organic-inorganic hybrid high-solid anticorrosive paint according to claim 8, wherein the second solvent is 1, 4-dioxane or absolute ethanol.
10. The method for preparing an organic-inorganic hybrid high-solid anticorrosive coating according to claim 8, wherein the chain transfer agent is trithiocarbonate or dithioester chain transfer agent.
11. The method for preparing an organic-inorganic hybrid high-solid anticorrosive coating according to claim 8, wherein the chain initiator is benzoyl peroxide or azobisisobutyronitrile.
12. The preparation method of the organic-inorganic hybrid high-solid anticorrosive coating as claimed in claim 8, wherein in the first step, the mass ratio of the chain transfer agent, the second solvent, the chain initiator and the first block polymer monomer is 5-10: 15-40: 1-5: 20-30.
13. The method for preparing an organic-inorganic hybrid high-solid anticorrosive coating according to claim 8, wherein in the first step, the mass ratio of the second solvent, the chain initiator and the second block polymer monomer is 15-40: 1-5: 15-25.
14. The preparation method of the organic-inorganic hybrid high-solid anticorrosive paint according to claim 8, wherein in the second step, the mass ratio of the organic polymer, the second solvent, the epoxy resin, the chain transfer agent and the chain initiator is 10-25: 15-40: 20-30: 5-10: 1-5.
15. The method for preparing an organic-inorganic hybrid high-solid anticorrosive paint according to claim 8, wherein in step three, the grinding step is carried out until the fineness is 30 to 50 μm.
16. Use of the organic-inorganic hybrid high-solid anticorrosive paint according to any one of claims 1 to 7, wherein the organic-inorganic hybrid high-solid anticorrosive paint is applied to a power transmission line tower or a pole tower.
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