CN112694806A - Preparation method of waterborne anticorrosive paint based on IPN structure - Google Patents
Preparation method of waterborne anticorrosive paint based on IPN structure Download PDFInfo
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- CN112694806A CN112694806A CN202011572593.0A CN202011572593A CN112694806A CN 112694806 A CN112694806 A CN 112694806A CN 202011572593 A CN202011572593 A CN 202011572593A CN 112694806 A CN112694806 A CN 112694806A
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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
- C09D133/04—Homopolymers or copolymers of esters
- C09D133/14—Homopolymers or copolymers of esters of esters containing halogen, nitrogen, sulfur or oxygen atoms in addition to the carboxy oxygen
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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
- C09D5/10—Anti-corrosive paints containing metal dust
- C09D5/106—Anti-corrosive paints containing metal dust containing Zn
-
- 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
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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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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- 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
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0893—Zinc
-
- 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
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/327—Aluminium phosphate
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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
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/328—Phosphates of heavy metals
-
- 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
A preparation method of water-based anticorrosive paint based on IPN structure, which adopts isocyanate curing agent to modify acrylic resin, forms interpenetrating polymer network structure, improves compactness of the paint, reduces film forming temperature of the paint, is beneficial to construction, and comprises an inorganic fiber filler which is a fibrous filamentous substance with higher strength, can obviously improve the overall strength of the coating, prolongs service life of the paint, provides an active carbon-based powder reduction auxiliary agent nano carbon black which is matched with a zinc-containing compound, has stronger reducibility, greatly improves anticorrosive effect of the water-based paint, especially on steel members, shows good construction performance in the construction process of a composite paint system, has less dry dust compared with a traditional alkyd system, can also show good surface anti-sagging property even when the thickness of a wet film is 400-, showing good sanding properties.
Description
Technical Field
The invention relates to the technical field of water-based anticorrosive coatings, in particular to a preparation method of a water-based anticorrosive coating based on an IPN structure.
Background
For a long time, solvent-based coatings containing a large amount of organic solvents are commonly used for metal corrosion prevention in building steel structures and other fields. The volatilization of the organic solvent not only causes waste, seriously pollutes the atmospheric environment and harms the health of people, but also is very easy to cause the accidents of flammability, explosiveness and the like. With the restriction of organic solvent emission (VOC) and the increasing awareness of environmental protection, the environment-friendly water-based anticorrosive paint has become one of the inevitable trends of the development of metal corrosion prevention in the future.
In developed countries in the west, the water-based paint occupies 60-75% of the share of the paint market, and most of the water-based paint is derived from the water-based anticorrosive paint, while the share of the whole water-based paint market in China is about 30%, so that the development potential of the water-based anticorrosive paint market is huge. The most successful water-borne coatings currently used in the industrial corrosion protection field are water-borne acrylic coatings, water-borne inorganic zinc silicate coatings and water-borne epoxy coatings, which together constitute a water-borne industrial corrosion protection system.
Compared with the water-based anticorrosive paint abroad, the water-based anticorrosive paint in China has poor anticorrosive effect, low overall strength, poor weather resistance and low comprehensive performance.
According to the principle of electrochemical corrosion, metals are corroded because water, oxygen, ions, and the like exist at the metal interface and a path through which ions flow exists. Therefore, to prevent corrosion of the metal, the coating is required to have a shielding function to prevent water, oxygen and ions from penetrating through the coating from the external corrosive environment to the metal interface.
Disclosure of Invention
In order to solve the technical defects in the prior art, the invention provides a preparation method of an IPN structure-based water-based anticorrosive paint.
The technical solution adopted by the invention is as follows: a preparation method of an IPN structure-based water-based anticorrosive paint comprises the following steps:
(1) preparation of modified aqueous acrylic emulsion: adding a PVA (polyvinyl acetate) aqueous solution, sodium bicarbonate, an emulsifier TX-10 and deionized water into a reaction kettle, adjusting the temperature to 60-90 ℃, adding ammonium persulfate, fully and uniformly stirring, weighing a mixed solution containing tetrahydrofuran acrylate, methyl methacrylate, styrene and hydroxyethyl acrylate, uniformly stirring in a dropping kettle, finishing dropping at a constant speed, and preserving heat to prepare a water-based acrylic resin emulsion;
(2) the preparation method of the two-component anticorrosive water-based paint comprises the following steps: the aqueous anti-corrosion coating based on the IPN structure is prepared by uniformly mixing 30-40% of aqueous acrylic resin emulsion, 10% of aqueous Polyurethane (PUD) emulsion, 4.5-13.5% of filler, 24-39% of anti-corrosion reducing agent, 1-11% of water and 6.5-9.5% of assistant to prepare a component A and a component B containing 5-20% of aqueous polyurethane curing agent according to the weight percentage of 8-12: 1.
The filler is 1-3% of talcum powder, 1-3% of sericite, 1-3% of wollastonite, 0.5-1.5% of bentonite and 1-3% of glass fiber reinforced plastic which play a role of covering; 5-10% of aluminum tripolyphosphate, 2-4% of zinc phosphate and 15-25% of zinc powder which are used as reducing agents; 2-4% of nano carbon black for adjusting electrode potential.
The auxiliary agent comprises polyether modified silicone oil l percent as a leveling agent; SJ-101 as thickener and whitener was 1%; 3-6% of propoxylated glycerin triglycidyl ether serving as an active auxiliary and 0.5% of fatty alcohol-polyoxyethylene ether serving as a surfactant; 1 percent of phytic acid with a stabilizing effect.
The mass part ratio of each component in the step (1) is as follows:
aqueous polyvinyl alcohol (PVA): 10 parts of (A);
sodium bicarbonate: 1 part;
emulsifier TX-10: 2 parts of (1);
185 parts of deionized water;
2 parts of ammonium persulfate;
tetrahydrofuran acrylate: 100-140 parts;
methyl methacrylate: 20-40 parts;
styrene: 20-30 parts of a solvent;
hydroxyethyl acrylate: 20-40 parts.
The invention has the beneficial effects that: the invention provides a preparation method of a waterborne anticorrosive coating based on an IPN structure, which adopts isocyanate curing agent to modify acrylic resin to form an interpenetrating polymer network structure, improves the compactness of the coating, reduces the film forming temperature of the coating, is beneficial to construction, and comprises an inorganic fiber filler which is a fibrous filamentous substance with higher strength, can obviously improve the overall strength of the coating, prolongs the service life of the coating, provides an active carbon-based powder reduction additive nano carbon black which is matched with a zinc-containing compound, has stronger reducibility, greatly improves the anticorrosive effect of the waterborne coating, particularly on steel components, shows very good construction performance in the construction process of a composite coating system, has dry dust compared with the traditional alkyd system, can also show good surface sag resistance even when the thickness of the wet film is 500 mu m, showing good sanding properties.
Drawings
FIG. 1 is a scheme showing the synthesis of a modified aqueous acrylic emulsion according to the present invention.
Detailed Description
Example 1
Preparation of aqueous acrylic resin emulsion
The water-based acrylic resin emulsion is a film forming substance, and the specific mixing ratio is as follows:
aqueous polyvinyl alcohol (PVA): 10Kg of water
Sodium bicarbonate: 1Kg of
Emulsifier TX-10: 2Kg
185Kg of deionized water
2Kg of ammonium persulfate
Tetrahydrofuran acrylate: 100-140kg
Methyl methacrylate: 20-40Kg
Styrene: 20-30Kg
Hydroxyethyl acrylate: 20-40Kg
10Kg of PVA aqueous solution, 1Kg of sodium bicarbonate, 2Kg of TX-10 and 185Kg of deionized water are added into a 1 ton reaction kettle, the temperature is adjusted to 60-90 ℃, 2Kg of ammonium persulfate is added, and the mixture is fully and uniformly stirred. Then weighing a mixed solution containing 140Kg of tetrahydrofuran acrylate, 20Kg of methyl methacrylate, 20Kg of styrene and 20Kg of hydroxyethyl acrylate, uniformly stirring in a dripping kettle, finishing dripping at a constant speed for 3 hours, and preserving heat for 1 hour to prepare the water-based acrylic resin emulsion.
10Kg of PVA aqueous solution, 1Kg of sodium bicarbonate, 2Kg of TX-10 and 185Kg of deionized water are added into a 1 ton reaction kettle, the temperature is adjusted to 60-90 ℃, 2Kg of ammonium persulfate is added, and the mixture is fully and uniformly stirred. Then weighing a mixed solution containing 110Kg of tetrahydrofuran acrylate, 40Kg of methyl methacrylate, 30Kg of styrene and 20Kg of hydroxyethyl acrylate, uniformly stirring in a dripping kettle, finishing dripping at a constant speed for 3 hours, and preserving heat for 1 hour to prepare the water-based acrylic resin emulsion.
10Kg of PVA aqueous solution, 1Kg of sodium bicarbonate, 2Kg of TX-10 and 185Kg of deionized water are added into a 1 ton reaction kettle, the temperature is adjusted to 60-90 ℃, 2Kg of ammonium persulfate is added, and the mixture is fully and uniformly stirred. Then weighing a mixed solution containing 100Kg of tetrahydrofuran acrylate, 30Kg of methyl methacrylate, 30Kg of styrene and 40Kg of hydroxyethyl acrylate, uniformly stirring in a dripping kettle, finishing dripping at a constant speed for 3 hours, and preserving heat for 1 hour to prepare the water-based acrylic resin emulsion.
Example 2
Preparation method of two-component anticorrosive water-based paint
The following substances are taken as 100 percent of the total substance in parts by mass:
the coating comprises A, B double components, wherein the A component comprises 30-40% of water-based acrylic resin emulsion, 10% of water-based Polyurethane (PUD) emulsion, 4.5-13.5% of filler, 24-39% of anti-corrosion reducing agent, 1-11% of water and 6.5-9.5% of auxiliary agent; the component B is 5-20% of a waterborne polyurethane curing agent. The weight percentage of the component A and the component B is 8-12:1, the components are evenly mixed and directly smeared on the surface of a base material, and the curing can be carried out after 24 hours at room temperature.
The filler comprises 1-3% of talcum powder, 1-3% of sericite, 1-3% of wollastonite, 0.5-1.5% of bentonite and 1-3% of glass fiber reinforced plastic which play a role of covering; 5-10% of aluminum tripolyphosphate, 2-4% of zinc phosphate and 15-25% of zinc powder which are used as reducing agents; 2-4% of nano carbon black for adjusting the potential of the electrode, and the like.
The auxiliary agent comprises polyether modified silicone oil l percent as a leveling agent; SJ-101 as thickener and whitener was 1%; 3-6% of active auxiliary (propoxylated glycerol triglycidyl ether), and 0.5% of fatty alcohol-polyoxyethylene ether as a surfactant; 1% of phytic acid with a stabilizing effect and the like.
The specific formula table of the component A is as follows (mass ratio):
note: PUD is produced by Zhoushan Hengli New Material technology Co., Ltd; ET121 is polyether modified silicone oil, produced by Shandong Dayi chemical industry Co.
The invention has better weather resistance, ultraviolet resistance and water resistance, can be prepared into light and semi-light type priming paint and finish paint, and can be constructed on most base materials, such as: steel, galvanized parts, aluminum materials, concrete, masonry, wood, and the like. The hard drying can be achieved after 1 hour, the recoating can be carried out after 2 hours (25 ℃), and the coating can be used at the temperature as low as 5 ℃. Moreover, the cross composite coating can be matched with water-based epoxy or acrylic primer and intermediate paint for use, and can also be used on solvent-based coating to form a cross composite coating anticorrosion system.
The invention selects the inert pigment and the filler with stable chemical properties and good filling effect, so that the cured coating has compact structure, stable properties and few surface defects, can block the contact of corrosive media and a substrate, prolongs the permeation path of the corrosive media to the substrate, and achieves the corrosion inhibition effect.
The skilled person should understand that: although the invention has been described in terms of the above specific embodiments, the inventive concept is not limited thereto and any modification applying the inventive concept is intended to be included within the scope of the patent claims.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (4)
1. A preparation method of an IPN structure-based water-based anticorrosive paint is characterized by comprising the following steps:
(1) preparation of modified aqueous acrylic emulsion: adding a PVA (polyvinyl acetate) aqueous solution, sodium bicarbonate, an emulsifier TX-10 and deionized water into a reaction kettle, adjusting the temperature to 60-90 ℃, adding ammonium persulfate, fully and uniformly stirring, weighing a mixed solution containing tetrahydrofuran acrylate, methyl methacrylate, styrene and hydroxyethyl acrylate, uniformly stirring in a dropping kettle, finishing dropping at a constant speed, and preserving heat to prepare a water-based acrylic resin emulsion;
(2) the preparation method of the two-component anticorrosive water-based paint comprises the following steps: the aqueous anti-corrosion coating based on the IPN structure is prepared by uniformly mixing 30-40% of aqueous acrylic resin emulsion, 10% of aqueous Polyurethane (PUD) emulsion, 4.5-13.5% of filler, 24-39% of anti-corrosion reducing agent, 1-11% of water and 6.5-9.5% of assistant to prepare a component A and a component B containing 5-20% of aqueous polyurethane curing agent according to the weight percentage of 8-12: 1.
2. The method for preparing the IPN structure-based water-based anticorrosive paint according to claim 1, wherein the filler comprises 1-3% of covering talc, 1-3% of sericite, 1-3% of wollastonite, 0.5-1.5% of bentonite and 1-3% of glass fiber reinforced plastic; 5-10% of aluminum tripolyphosphate, 2-4% of zinc phosphate and 15-25% of zinc powder which are used as reducing agents; 2-4% of nano carbon black for adjusting electrode potential.
3. The preparation method of the IPN structure-based water-based anticorrosive paint according to claim 1, wherein the auxiliary agent comprises l% of polyether modified silicone oil as a leveling agent; SJ-101 as thickener and whitener was 1%; 3-6% of propoxylated glycerin triglycidyl ether serving as an active auxiliary and 0.5% of fatty alcohol-polyoxyethylene ether serving as a surfactant; 1 percent of phytic acid with a stabilizing effect.
4. The preparation method of the IPN structure-based water-based anticorrosive paint according to claim 1, wherein the components in the step (1) are in parts by mass:
aqueous polyvinyl alcohol (PVA): 10 parts of (A);
sodium bicarbonate: 1 part;
emulsifier TX-10: 2 parts of (1);
185 parts of deionized water;
2 parts of ammonium persulfate;
tetrahydrofuran acrylate: 100-140 parts;
methyl methacrylate: 20-40 parts;
styrene: 20-30 parts of a solvent;
hydroxyethyl acrylate: 20-40 parts.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113234387A (en) * | 2021-05-10 | 2021-08-10 | 东阳市荣跃新材料有限公司 | Preparation method of hydrophobic high-strength anticorrosive coating |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337061A (en) * | 2010-07-22 | 2012-02-01 | 上海天地涂料有限公司 | Aqueous damping paint and preparation method thereof |
| CN104017452A (en) * | 2014-06-19 | 2014-09-03 | 舟山市恒泰漆业有限责任公司 | Preparation method of isocyanate curing agent-modified water-based acrylate composite metal anticorrosive paint |
| CN105348435A (en) * | 2015-12-11 | 2016-02-24 | 舟山市恒泰漆业有限责任公司 | Preparing method of modified water-based acrylic emulsion, water-based acrylic composite resin finish paint and preparing method of water-based acrylic composite resin finish paint |
| CN111303741A (en) * | 2020-03-04 | 2020-06-19 | 绵阳麦思威尔科技有限公司 | High-film-thickness waterborne polyurethane long-acting anticorrosive paint for wind power and petrochemical equipment and preparation method thereof |
-
2020
- 2020-12-28 CN CN202011572593.0A patent/CN112694806A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337061A (en) * | 2010-07-22 | 2012-02-01 | 上海天地涂料有限公司 | Aqueous damping paint and preparation method thereof |
| CN104017452A (en) * | 2014-06-19 | 2014-09-03 | 舟山市恒泰漆业有限责任公司 | Preparation method of isocyanate curing agent-modified water-based acrylate composite metal anticorrosive paint |
| CN105348435A (en) * | 2015-12-11 | 2016-02-24 | 舟山市恒泰漆业有限责任公司 | Preparing method of modified water-based acrylic emulsion, water-based acrylic composite resin finish paint and preparing method of water-based acrylic composite resin finish paint |
| CN111303741A (en) * | 2020-03-04 | 2020-06-19 | 绵阳麦思威尔科技有限公司 | High-film-thickness waterborne polyurethane long-acting anticorrosive paint for wind power and petrochemical equipment and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113234387A (en) * | 2021-05-10 | 2021-08-10 | 东阳市荣跃新材料有限公司 | Preparation method of hydrophobic high-strength anticorrosive coating |
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Application publication date: 20210423 |