CN110437684B - Aniline trimer modified aqueous polyvinylidene chloride heavy-duty anticorrosive paint and preparation method thereof - Google Patents
Aniline trimer modified aqueous polyvinylidene chloride heavy-duty anticorrosive paint and preparation method thereof Download PDFInfo
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/12—Polymerisation in non-solvents
- C08F2/16—Aqueous medium
- C08F2/22—Emulsion polymerisation
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- C08F2/00—Processes of polymerisation
- C08F2/12—Polymerisation in non-solvents
- C08F2/16—Aqueous medium
- C08F2/22—Emulsion polymerisation
- C08F2/24—Emulsion polymerisation with the aid of emulsifying agents
- C08F2/30—Emulsion polymerisation with the aid of emulsifying agents non-ionic
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- C08F214/00—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 a halogen
- C08F214/02—Monomers containing chlorine
- C08F214/04—Monomers containing two carbon atoms
- C08F214/08—Vinylidene chloride
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- 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
- C09D127/00—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 a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—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 a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/04—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 a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C09D127/08—Homopolymers or copolymers of vinylidene chloride
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- 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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- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/04—Acids; Metal salts or ammonium salts thereof
- C08F220/06—Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
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- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
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- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/34—Esters containing nitrogen, e.g. N,N-dimethylaminoethyl (meth)acrylate
- C08F220/36—Esters containing nitrogen, e.g. N,N-dimethylaminoethyl (meth)acrylate containing oxygen in addition to the carboxy oxygen, e.g. 2-N-morpholinoethyl (meth)acrylate or 2-isocyanatoethyl (meth)acrylate
Abstract
The invention discloses an aniline trimer modified aqueous polyvinylidene chloride heavy-duty anticorrosive coating and a preparation method thereof, belonging to the field of high polymer materials. The invention realizes miniemulsion polymerization at low temperature, has the characteristics of easy control of reaction conditions, good emulsion stability and the like, and has excellent properties of high adhesive force, oxygen isolation, moisture resistance, corrosion resistance and the like when being coated on the surface of metal.
Description
Technical Field
The invention relates to the field of high polymer materials, and particularly relates to an aniline trimer modified aqueous polyvinylidene chloride heavy-duty anticorrosive paint and a preparation method thereof.
Background
Volatile Organic Compounds (VOC) are one of the important causes of haze formation and are the key points of the atmospheric pollution control in the current country. Conventional solvent-based coatings are increasingly limited in their use due to the large amount of volatile organic compounds used as solvents. In the face of severe environmental protection situation, the national continuous policy and regulation guides paint production and paint coating enterprises to develop towards environmental friendliness such as water-based and high-solid content. At present, the water-based anticorrosive paint mainly adopts water-based alkyd resin, water-based acrylic resin, water-based polyurethane resin and water-based epoxy resin as main film forming substances. The waterborne alkyd and waterborne acrylic products are mainly packaged by single components, and mainly face to light anticorrosion application in performance; most of waterborne polyurethane and waterborne epoxy products are packaged in a double-component mode, have excellent performance but higher price, and are mainly used for decoration and protection in medium-to-severe corrosive environments.
Polyvinylidene chloride (PVDC) resin is a material which is obtained by polymerizing other monomers such as vinylidene chloride (VDC), acrylonitrile, acrylic acid, acrylate and the like, has high barrier property, strong toughness and good chemical stability, and has excellent oil resistance, corrosion resistance, odor protection, oxygen isolation, moisture protection and mildew resistance. At present, PVDC resin is widely applied to the field of packaging of various products such as food, medicine, paper, cosmetics, military supplies and the like which need high barrier requirements such as oxygen barrier and corrosion prevention, odor barrier and fragrance preservation, water barrier and moisture prevention, oil barrier and permeation prevention and the like. PVDC resins are classified into two types according to processing methods: one is a resin for extrusion, injection molding; the second is latex for coating film. In recent years, emulsion synthesized based on VDC monomer does not contain flammable and toxic solvent, and the coating film has good oxygen-insulating and waterproof performance, can greatly reduce the corrosion rate of metal, and has been widely researched in the field of metal corrosion prevention. From the production process of PVDC latex, the PVDC emulsions in the above patents such as Japanese patent No. Sho 62256871, US4211684, US4997859, and European patent No. EP0268042 all adopt a seed emulsion polymerization production method, the conventional emulsion polymerization process is a micelle nucleation mechanism, the monomers need to have certain water solubility and migrate to the micelles through the water phase to carry out polymerization reaction, and the solubility of the monomers in the water phase is extremely low, which affects the smooth proceeding of emulsion polymerization. The miniemulsion system has no micelle, so that the initiator is added to directly initiate nucleation in the monomer droplets, the emulsion polymerization is a monomer droplet nucleation mechanism, the diffusion of the monomer in a continuous phase is not relied on, and the miniemulsion system has great advantages for the emulsion polymerization of the water-insoluble vinylidene chloride monomer.
The existing water-based paint taking polyvinylidene chloride emulsion as a component has better medium shielding performance after being dried, but has the problems of low mechanical strength and low adhesion to a substrate, and is easy to damage to cause coating defects to influence the corrosion prevention effect. And the acrylate monomer containing the aniline trimer structure is copolymerized with vinylidene chloride, when the aniline trimer structure in the resin molecule contacts with a metal substrate, groups containing lone electron pairs and delocalized pi electrons, such as nitrogen atoms, aryl groups and the like in the molecular structure of the copolymer form stable complexes with iron atoms through coordination bonds to be adsorbed on the metal surface, so that the binding force and the adhesive force between the coating resin and the substrate, and between the resin and a filler are further enhanced, and meanwhile, the aniline trimer can react with the metal surface to generate a compact oxidation passivation film, so that the corrosion inhibition effect is achieved, and the corrosion resistance of the aqueous polyvinylidene chloride coating is improved.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides an aniline trimer modified aqueous polyvinylidene chloride heavy-duty anticorrosive paint and a preparation method thereof, so as to solve the technical problem that an anticorrosive paint prepared from polyvinylidene chloride in the prior art is poor in effect.
The invention is realized by the following technical scheme:
the invention provides an aniline trimer modified aqueous polyvinylidene chloride heavy-duty anticorrosive coating, which comprises aniline trimer modified polyvinylidene chloride latex, wherein the aniline trimer modified polyvinylidene chloride latex is obtained by copolymerization of vinylidene chloride and A-GMA functional monomer through miniemulsion of an oxidation-reduction initiation system initiation monomer.
Further, the structural formula of the A-GMA functional monomer is as follows:
further, the A-GMA functional monomer is prepared by the following steps: ultrasonically dispersing glycidyl methacrylate abbreviated as GMA and aniline trimer abbreviated as AT into a propylene glycol monomethyl ether solvent, heating to 60-70 ℃, reacting for 3-4h, and then carrying out reduced pressure distillation to remove the solvent to obtain the A-GMA functional monomer containing the aniline trimer structure.
Further, the aniline trimer modified polyvinylidene chloride latex is prepared by the following components through a miniemulsion polymerization method; the components are specifically as follows:
further, the miniemulsion polymerization process comprises the steps of:
preparing the respective materials according to the composition
Step one, adding a vinylidene chloride monomer, an A-GMA functional monomer, an acrylate monomer, acrylic acid and an auxiliary stabilizer in sequence in a reactor A, and stirring and mixing uniformly to obtain a mixed solution;
step two, adding the composite emulsifier into deionized water, stirring and dissolving, dripping into the mixed solution obtained in the step one, stirring for 10-30min, and then treating for 2-5min by using a high-speed shearing machine to obtain a monomer miniemulsion;
and step three, placing the monomer miniemulsion in a reactor B with a stirrer, a nitrogen introducing device and a temperature controller, introducing nitrogen for 30min, adding a redox initiator at 25-35 ℃ to initiate polymerization, continuously reacting for 2-4h at the temperature, adding 0.1g of hydroquinone after the reaction is finished, and adjusting the pH value to about 7 by using 2% ammonia water to obtain the aniline trimer modified polyvinylidene chloride latex.
Further, the acrylate monomer is one or a mixture of more of sec-butyl acrylate, isooctyl acrylate, lauryl methacrylate, 2-ethylhexyl methacrylate and isobornyl methacrylate.
Further, the composite emulsifier is a mixture of an ionic emulsifier and a non-ionic emulsifier in a mass ratio of 1-2: 1; wherein:
the ionic emulsifier is one of octadecyl trimethyl ammonium bromide and lauryl sodium sulfate;
the non-ionic emulsifier is one of octadecyl alcohol polyoxyethylene ether, lauryl alcohol polyoxyethylene ether and octyl phenol polyoxyethylene ether.
Further, the co-stabilizer is one of hexadecane and hexadecanol.
Further, the redox initiator specifically comprises an oxidizing agent and a reducing agent in a molar ratio of 1:0.8-1, wherein the oxidizing agent is one of hydrogen peroxide, ammonium persulfate and sodium persulfate, and the reducing agent is one of sodium sulfite, sodium bisulfite and ascorbic acid.
Further, the heavy anti-corrosion coating also comprises 0.1-1 wt% of film forming aid, 0.5-2 wt% of defoaming agent, 0.5-2 wt% of leveling agent and 0.5-2 wt% of thickening agent, wherein the film forming aid is one or a mixture of more of propylene glycol butyl ether, propylene glycol methyl ether acetate and diethylene glycol monomethyl ether, the defoaming agent is one or a mixture of more of Surfynol DF-110D, TEGO-901W, TEGO-902W, the leveling agent is one or a mixture of BYK-3070 and RM-2020, and the thickening agent is one or a mixture of more of LD-108A, FZ-40 and PTA-936.
Compared with the prior art, the invention has the following advantages:
(1) the single initiator has high polymerization initiating temperature (more than or equal to 70 ℃), high energy consumption, low boiling point of vinylidene chloride, usually additional condensation reflux device and complex operation. Compared with a single initiator, the redox initiation system can generate free radicals quickly due to low activation energy of the reaction, can initiate polymerization reaction at low temperature and room temperature, has simple process, easily controlled reaction conditions and higher safety coefficient, and can also achieve the effect of effectively controlling the temperature and the polymerization reaction of the system by controlling the reaction process of the oxidant and the reducing agent in the initiation system.
(2) The miniemulsion polymerization takes monomer submicron droplets as a main field for initiating nucleation, has large emulsion particle size, is easy to control the polymerization reaction speed, and has higher system stability.
(3) The acrylic ester soft monomer is added in the preparation process of the polyvinylidene chloride emulsion, so that the symmetrical structure in the resin molecules can be reduced, and the crystallinity of the coating film is reduced, thereby achieving the effects of improving the toughness, the adhesive force, the salt spray corrosion resistance and the like of the coating film. The addition of unsaturated fatty acid monomers can impart good water dispersibility and film forming properties to the emulsion. The addition of the functional monomer containing the aniline trimer structure can improve the corrosion resistance and the thermal stability of the coating.
Drawings
FIG. 1 TEM image of aniline trimer-modified polyvinylidene chloride latex of example 1;
FIG. 2 is a comparative graph of the aniline trimer modified aqueous polyvinylidene chloride heavy duty coating coated Q235 steel plates of examples 1-3 after being soaked in 3.5% NaCl for 30 days.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, 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 provided by the invention comprises the following steps:
example 1
The preparation method of the aniline trimer modified aqueous polyvinylidene chloride heavy-duty anticorrosive paint comprises the following steps:
(1) ultrasonically dispersing 45g of Glycidyl Methacrylate (GMA) and 86g of Aniline Trimer (AT) in 300mL of propylene glycol methyl ether solvent, heating to 70 ℃ under the protection of nitrogen, reacting for 4 hours, and then carrying out reduced pressure distillation (AT 70 ℃, under-0.09 MPa) to remove the solvent to obtain a functional monomer A-GMA containing an aniline trimer structure;
(2) preparing reaction raw materials for later use: vinylidene chloride monomer: 700 g; functional monomer A-GMA: 50g of the total weight of the mixture; acrylate monomer: 30g of isooctyl acrylate; 20g of acrylic acid; emulsifier: 10g of sodium dodecyl sulfate and 10g of octyl phenol polyoxyethylene ether; co-stabilizer: 10g of hexadecane; initiator: 3.7g of ammonium persulfate and 1.3g of sodium bisulfite; deionized water: 1 kg.
(3) Adding 700g of vinylidene chloride monomer, 50g of functional monomer A-GMA, 30g of acrylate monomer, 20g of acrylic acid and 10g of hexadecane in sequence into a reaction kettle, and stirring and mixing uniformly;
(4) adding 20g of composite emulsifier into 1kg of deionized water, stirring and dissolving, dripping into the mixed solution obtained in the step (1), stirring for 20min, and then treating for 2min by using a high-speed shearing machine to obtain a monomer miniemulsion;
(5) and (2) placing the monomer miniemulsion in a pressure reaction kettle with a stirrer, a nitrogen introducing device and a temperature controller, introducing nitrogen for 30min, controlling the temperature at 30 ℃, respectively adding 3.7g of ammonium persulfate and 1.3g of sodium bisulfite, continuously reacting for 3h at the temperature, adding 0.1g of hydroquinone after the reaction is finished, and adjusting the pH value to about 7 by using 2% ammonia water to obtain the aniline trimer modified polyvinylidene chloride latex, wherein a TEM image of the latex is shown in figure 1. The latex properties are shown in Table 1.
(6) 8g of film-forming aid diethylene glycol monoether, 16g of defoamer Surfynol DF-110, 16g of BYK-3070 flatting agent and 16g of LD-108A thickener are added into the aniline trimer modified polyvinylidene chloride latex, and the mixture is uniformly mixed to obtain the aniline trimer modified aqueous polyvinylidene chloride heavy anti-corrosive paint, and the corrosion result after the paint is coated on the surface of a steel plate and soaked in 3.5% NaCl for 30 days is shown in figure 2.
Example 2:
the preparation method of the aniline trimer modified aqueous polyvinylidene chloride heavy-duty anticorrosive paint comprises the following steps:
(1) the preparation of functional monomer A-GMA is the same as that of example 1, step (1);
(2) preparing reaction raw materials for later use: vinylidene chloride monomer: 800 g; functional monomer A-GMA: 80g of the total weight of the mixture; acrylate monomer: 25g of lauryl methacrylate, 14g of sec-butyl acrylate and 6g of isobornyl methacrylate; 30g of acrylic acid; emulsifier: 10g of sodium dodecyl sulfate and 10g of octyl phenol polyoxyethylene ether; co-stabilizer: 10g of hexadecane; initiator: 5.6g of sodium persulfate and 2.4g of sodium sulfite; deionized water: 1.2 kg;
(3) sequentially adding 800g of vinylidene chloride monomer, 80g of functional monomer A-GMA, 45g of acrylate monomer, 30g of acrylic acid and 10g of hexadecane into a reaction kettle, and stirring and mixing uniformly;
(4) adding 20g of composite emulsifier into 1.2kg of deionized water, stirring and dissolving, dripping into the mixed solution obtained in the step (1), stirring for 20min, and then treating for 3min by using a high-speed shearing machine to obtain a monomer miniemulsion;
(5) and (2) placing the monomer miniemulsion in a pressure reaction kettle with a stirrer, a nitrogen introducing device and a temperature controller, introducing nitrogen for 30min, controlling the temperature to be 35 ℃, respectively adding 5.6g of sodium persulfate and 2.4g of sodium sulfite, continuously reacting for 3h at the temperature, adding 0.1g of hydroquinone after the reaction is finished, and adjusting the pH value to about 7 by using 2% ammonia water to obtain the aniline trimer modified polyvinylidene chloride latex. The latex properties are shown in Table 1.
(6) 10g of film-forming aid diethylene glycol monoether, 20g of defoamer Surfynol DF-110, 20g of BYK-3070 flatting agent and 20g of LD-108A thickener are added into the aniline trimer modified polyvinylidene chloride latex, and the mixture is uniformly mixed to obtain the aniline trimer modified aqueous polyvinylidene chloride heavy anti-corrosive paint, and the corrosion result after the paint is coated on the surface of a steel plate and soaked in 3.5% NaCl for 30 days is shown in figure 2.
Example 3:
the preparation method of the aniline trimer modified aqueous polyvinylidene chloride heavy-duty anticorrosive paint comprises the following steps:
(1) preparation of functional monomer A-GMA: same as example 1, step (1);
(2) preparing reaction raw materials for later use: vinylidene chloride monomer: 800 g; functional monomer A-GMA: 100g of the total weight of the mixture; acrylate monomer: 20g of sec-butyl acrylate, 15g of isooctyl acrylate and 15g of 2-ethylhexyl methacrylate; unsaturated fatty acid monomer: 40g of acrylic acid; emulsifier: 30g of lauryl sodium sulfate and 15g of octyl phenol polyoxyethylene ether; (ii) a Co-stabilizer: 20g of hexadecanol; initiator: 1.7g of hydrogen peroxide and 6.3g of ascorbic acid; deionized water: 1.5 kg;
(3) sequentially adding 800g of vinylidene chloride monomer, 100g of functional monomer A-GMA, 50g of acrylate monomer, 40g of acrylic acid and 20g of hexadecanol into a reaction kettle, and stirring and mixing uniformly;
(4) adding 45g of composite emulsifier into 1.5kg of deionized water, stirring and dissolving, dripping into the mixed solution obtained in the step (1), stirring for 20min, and then treating for 5min by using a high-speed shearing machine to obtain a monomer miniemulsion;
(5) and (2) placing the monomer miniemulsion in a pressure reaction kettle with a stirrer, a nitrogen introducing device and a temperature controller, introducing nitrogen for 30min, controlling the temperature at 35 ℃, respectively adding 1.7g of hydrogen peroxide and 6.3g of ascorbic acid, continuously reacting for 4h at the temperature, adding 0.1g of hydroquinone after the reaction is finished, and adjusting the pH value to about 7 by using 2% ammonia water to obtain the aniline trimer modified polyvinylidene chloride latex. The latex properties are shown in Table 1.
(6) 10g of film-forming aid diethylene glycol monoether, 20g of defoamer Surfynol DF-110, 20g of BYK-3070 flatting agent and 20g of LD-108A thickener are added into the aniline trimer modified polyvinylidene chloride latex, and the mixture is uniformly mixed to obtain the aniline trimer modified aqueous polyvinylidene chloride heavy anti-corrosive paint, and the corrosion result after the paint is coated on the surface of a steel plate and soaked in 3.5% NaCl for 30 days is shown in figure 2.
Properties of polyvinylidene chloride emulsion obtained in examples 1 to 3
TABLE 1
The aniline trimer modified aqueous polyvinylidene chloride heavy-duty anticorrosive paint prepared in examples 1-3 was uniformly coated on the surface of a Q235 steel plate, dried in a constant temperature drying oven (above the lowest film-forming temperature) to form a film, the surface of the coated film of the steel plate was treated by "x", and then soaked in a sodium chloride solution with a mass fraction of 3.5%, and the corrosion of the coated film was observed after the soaking time was 30 days.
FIG. 2 is a comparative picture of the aniline trimer modified aqueous polyvinylidene chloride heavy-duty anticorrosive coating coated Q235 steel plate of examples 1-3 after being soaked in 3.5% NaCl for 30 days.
From the results of the immersion test, the corrosion degree of the surface of the steel sheet coated with the coating obtained in examples 1 to 3 was increased as the immersion time passed. However, the corrosion degree of the coating sample of example 1 is higher than that of examples 2 and 3 in the same soaking time, and the coating film of example 3 of example 2 has no obvious corrosion and foaming phenomena after being soaked for 30 days, which indicates that AT has good corrosion inhibition effect.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (5)
1. The aniline trimer modified aqueous polyvinylidene chloride heavy-duty anticorrosive paint is characterized by comprising aniline trimer modified polyvinylidene chloride latex, wherein the aniline trimer modified polyvinylidene chloride latex comprises the following components in parts by weight:
the preparation method specifically comprises the following steps:
preparing the respective materials according to the composition
Step one, adding a vinylidene chloride monomer, an A-GMA functional monomer, an acrylate monomer, acrylic acid and an auxiliary stabilizer in sequence in a reactor A, and stirring and mixing uniformly to obtain a mixed solution;
step two, adding the composite emulsifier into deionized water, stirring and dissolving, dripping into the mixed solution obtained in the step one, stirring for 10-30min, and then treating for 2-5min by using a high-speed shearing machine to obtain a monomer miniemulsion;
placing the monomer miniemulsion in a reactor B with a stirrer, a nitrogen introducing device and a temperature controller, introducing nitrogen for 30min, adding a redox initiator at 25-35 ℃ to initiate polymerization, continuously reacting for 2-4h at the temperature, adding 0.1g of hydroquinone after the reaction is finished, and adjusting the pH value to about 7 by using 2% ammonia water to obtain the aniline trimer modified polyvinylidene chloride latex;
the A-GMA functional monomer is prepared by the following steps: ultrasonically dispersing glycidyl methacrylate abbreviated as GMA and aniline trimer abbreviated as AT into a propylene glycol monomethyl ether solvent, heating to 60-70 ℃, reacting for 3-4h, and then carrying out reduced pressure distillation to remove the solvent to obtain the A-GMA functional monomer containing the aniline trimer structure.
2. The aniline trimer-modified aqueous polyvinylidene chloride heavy-duty coating of claim 1, wherein the acrylate monomer is one or more of sec-butyl acrylate, isooctyl acrylate, lauryl methacrylate, 2-ethylhexyl methacrylate, and isobornyl methacrylate.
3. The aniline trimer modified aqueous polyvinylidene chloride heavy-duty anticorrosive coating according to claim 2, characterized in that the composite emulsifier is a mixture of an ionic emulsifier and a non-ionic emulsifier in a mass ratio of 1-2: 1; wherein:
the ionic emulsifier is one of octadecyl trimethyl ammonium bromide and lauryl sodium sulfate;
the non-ionic emulsifier is one of octadecyl alcohol polyoxyethylene ether, lauryl alcohol polyoxyethylene ether and octyl phenol polyoxyethylene ether.
4. The aniline trimer-modified aqueous polyvinylidene chloride heavy-duty coating of claim 3, wherein the co-stabilizer is one of hexadecane and hexadecanol.
5. The aniline trimer-modified aqueous polyvinylidene chloride heavy-duty coating of claim 4, wherein the redox initiator specifically comprises an oxidizing agent and a reducing agent in a molar ratio of 1:0.8-1, the oxidizing agent is one of hydrogen peroxide, ammonium persulfate and sodium persulfate, and the reducing agent is one of sodium sulfite, sodium bisulfite and ascorbic acid.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910754757.2A CN110437684B (en) | 2019-08-15 | 2019-08-15 | Aniline trimer modified aqueous polyvinylidene chloride heavy-duty anticorrosive paint and preparation method thereof |
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| CN201910754757.2A CN110437684B (en) | 2019-08-15 | 2019-08-15 | Aniline trimer modified aqueous polyvinylidene chloride heavy-duty anticorrosive paint and preparation method thereof |
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| CN110437684A CN110437684A (en) | 2019-11-12 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101186666A (en) * | 2007-11-19 | 2008-05-28 | 上海氯碱化工股份有限公司 | Method for preparing polyvinylidene chloride and acrylic ester copolymerization latex |
| CN102300907A (en) * | 2009-01-29 | 2011-12-28 | 丰田自动车株式会社 | Polyaniline-added prepolymer, method of manufacturing polyaniline-added prepolymer, polyaniline graft polymer, method of manufacturing polyaniline graft polymer, cross-linked material, and paint |
| CN103214612A (en) * | 2013-05-06 | 2013-07-24 | 南通瑞普埃尔生物工程有限公司 | Preparation method of high-barrier-performance vinylidene chloride and acrylonitrile copolymer latex |
| CN107759721A (en) * | 2016-08-18 | 2018-03-06 | 摩田化学（昆山）有限公司 | Waterborne metal anti-corrosive paint polyvinylidene chloride acrylate copolymer emulsion and its synthetic method |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101186666A (en) * | 2007-11-19 | 2008-05-28 | 上海氯碱化工股份有限公司 | Method for preparing polyvinylidene chloride and acrylic ester copolymerization latex |
| CN102300907A (en) * | 2009-01-29 | 2011-12-28 | 丰田自动车株式会社 | Polyaniline-added prepolymer, method of manufacturing polyaniline-added prepolymer, polyaniline graft polymer, method of manufacturing polyaniline graft polymer, cross-linked material, and paint |
| CN103214612A (en) * | 2013-05-06 | 2013-07-24 | 南通瑞普埃尔生物工程有限公司 | Preparation method of high-barrier-performance vinylidene chloride and acrylonitrile copolymer latex |
| CN107759721A (en) * | 2016-08-18 | 2018-03-06 | 摩田化学（昆山）有限公司 | Waterborne metal anti-corrosive paint polyvinylidene chloride acrylate copolymer emulsion and its synthetic method |
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