CN107151491B - A kind of aqueous rust transfer priming paint and preparation method thereof suitable for corroding steel surface - Google Patents

A kind of aqueous rust transfer priming paint and preparation method thereof suitable for corroding steel surface Download PDF

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CN107151491B
CN107151491B CN201710318176.5A CN201710318176A CN107151491B CN 107151491 B CN107151491 B CN 107151491B CN 201710318176 A CN201710318176 A CN 201710318176A CN 107151491 B CN107151491 B CN 107151491B
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emulsion
agent
priming paint
vinylidene chloride
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CN107151491A (en
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陈钊聪
张卫中
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NANJING CHANGJIANG PAINT CO Ltd
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NANJING CHANGJIANG PAINT CO Ltd
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D127/00Coating 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
    • C09D127/02Coating 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
    • C09D127/04Coating 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
    • C09D127/08Homopolymers or copolymers of vinylidene chloride
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    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2/00Processes of polymerisation
    • C08F2/12Polymerisation in non-solvents
    • C08F2/16Aqueous medium
    • C08F2/22Emulsion polymerisation
    • C08F2/24Emulsion polymerisation with the aid of emulsifying agents
    • C08F2/28Emulsion polymerisation with the aid of emulsifying agents cationic
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    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2/00Processes of polymerisation
    • C08F2/12Polymerisation in non-solvents
    • C08F2/16Aqueous medium
    • C08F2/22Emulsion polymerisation
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    • C08F214/00Copolymers 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
    • C08F214/02Monomers containing chlorine
    • C08F214/04Monomers containing two carbon atoms
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    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F220/00Copolymers 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
    • C08F220/02Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
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    • C08F230/00Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal
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    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/08Anti-corrosive paints
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    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20Oxides; Hydroxides
    • C08K3/22Oxides; Hydroxides of metals
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Abstract

The aqueous rust that the invention discloses a kind of suitable for corroding steel surface shifts priming paint and preparation method thereof, is applied to corrosion steel surface.The aqueous rust transfer priming paint is made of vinylidene chloride-acrlylonitrile-acrylate multi-copolymerization emulsion, phosphate modified polyacrylate aqueous dispersion, non-ionic wetting dispersing agent, anti-settling agent, pigment, filler, polyether silicone defoaming agent, coalescing agent, substrate wetting agents, isothiazolinone, polyurethane associative thickener and water.The aqueous rust transfer priming paint is one-component, self-drying type product, and storage stability is high, turns rust excellent in efficiency, and the coating of formation has excellent vapour resistance and long-effective corrosion.

Description

A kind of aqueous rust transfer priming paint and preparation method thereof suitable for corroding steel surface
Technical field
The present invention relates to one kind be applied to corrosion steel surface, have rust conversion and anticorrosion properties aqueous priming paint and its Preparation method.
Background technique
Steel is the most commonly used metal material of modern society.Loss caused by steel corrosion, not only shows material The destruction that shape, color, mechanical property etc. are subject to, it is often more important that making the credit rating of its product, engineering reduces, essence Degree, sensitivity are impaired, influence its use value and even scrap, the major accident of fatal crass but will be caused under individual cases.
The application of anticorrosive paint is the main means of current control steel corrosion.In order to obtain excellent protection effect, pass System anticorrosive paint needs to carry out ground stringent processing of rust removing before construction.Wherein, by hand, time-consuming for powertool cleaning, and Oxide skin, iron rust removing are not thorough.Sandblasting or shot peening are high-efficient, but can significantly improve product cost, bring strong powder Dirt and noise can't thoroughly handle the dead angle in complex job face, it is most important that will cause steel construction and be thinned, it is strong to reduce it Degree.Therefore, for be difficult to thoroughly derust product, engineering (such as: heavy construction, bridge, the equipment of complexity, coal gas storage cabinet) with And require save manpower, working hour, cost protection occasion, realize application over rust be particularly important.
Currently, domestic application over rust coating is based on the products such as solvent type epoxy, haloflex, chlorinated rubber.It is applied Aromatic hydrocarbons, alkanes, ketone and esters solvent are largely used during work, environment friendly is poor.Country is to waving after 2010 Limit row's policy of hair property organic matter (VOC) is gradually tightened.Such as: in September, 2013, " the prevention and control of air pollution action that State Council prints and distributes Plan " it clearly proposes to improve the VOC emission requirement of the key industrys such as coating, study and define VOC Regulation Policy on Pollution Discharge Fee.2015 1 The moon 26, National Ministry of Finance combines with the State Tax Administration to have issued " about the notice for imposing the consumption tax to coating "." notice " It is required that the coating to (VOC) content of volatile organic compounds under Construction State higher than 420g/L was in production, commission from 1 day 2 months 15 years Processing and import link impose the consumption tax, and the applicable tax rate is 4%.In face of increasingly serious Environmental Protection Situation, the water of application over rust Propertyization upgrading is imperative.
Summary of the invention
The present invention be directed to above-mentioned problems to provide a kind of aqueous rust transfer priming paint suitable for corroding steel surface And preparation method thereof.
The purpose of the present invention can be achieved through the following technical solutions:
It is a kind of suitable for corrode steel surface aqueous rust shift priming paint, the priming paint by 10~50 mass parts inclined two chloroethene Alkene-acrlylonitrile-acrylate multi-copolymerization emulsion, the phosphate modified polyacrylate aqueous dispersion of 10~50 mass parts, 0.1 The non-ionic wetting dispersing agent of~10 mass parts, the anti-settling agent of 0.1~5 mass parts, the pigment of 1~15 mass parts, 1~20 matter Measure the filler of part, the polyether silicone defoaming agent of 0.01~1 mass parts, 1~10 mass parts coalescing agent, 0.1~1 mass parts Substrate wetting agents, the isothiazolinone of 0.1~1 mass parts, 0.3~3 mass parts polyurethane associative thickener and 1~30 The water of mass parts forms;
Wherein: the vinylidene chloride-acrlylonitrile-acrylate multi-copolymerization emulsion is to be prepared via a method which It arrives:
(1) by the vinylidene chloride of 60~80 mass parts, the acrylonitrile of 5~10 mass parts, 2~5 mass parts acrylic acid, The water of the esters of acrylic acid soft monomer of 10~20 mass parts, the mixed surfactant of 2~6 mass parts and 80~120 mass parts Monomer pre-emulsion is made under agitation, the esters of acrylic acid soft monomer is that n-butyl acrylate or acrylic acid are different pungent Ester;
(2) it takes 1/5 monomer pre-emulsion to be added in the reactor of nitrogen protection first, is warming up to 55~65 DEG C;Secondly will The azo diisobutyl amidine hydrochloric acid salt initiators of 0.3~1.2 mass parts are configured to 10% aqueous solution, take wherein 1/5 initiator Aqueous solution is added in reactor, stirring polymerization 1h;It is later that remaining monomer pre-emulsion and remaining initiator solution is same When instill reactor in, 3~4h is added dropwise, and continues to be stirred to react 1h;Finally, being warming up to 70 DEG C, 1h is kept the temperature, it is cooling, add Enter phosphate buffer regulation system pH value to 2.0~4.5, filtering can be obtained vinylidene chloride-acrlylonitrile-acrylate Multi-copolymerization emulsion;
The phosphate modified polyacrylate aqueous dispersion is to be prepared via a method which to obtain: by 25~45 mass Senecioate-the etherophosphoric acid of part, the acrylic acid of 2~5 mass parts, the methyl methacrylate of 25~40 mass parts, 15~35 The butyl acrylate of mass parts, the azodiisobutyronitrile of 0.2~1.0 mass parts, 2~8 mass parts mixed surfactant and Monomer-initiator mixing pre-emulsion is made in the water of 90~130 mass parts under high velocity agitation;Take the 1/4 mixing pre-emulsification Liquid is added in the reactor of nitrogen protection, is warming up to 65~70 DEG C, stirring polymerization 1h;Remaining mixing pre-emulsion is delayed later Slow to instill in reactor, 3~4h is added dropwise, and continues to be stirred to react 1h;Then, 80~90 DEG C are warming up to, 1h is kept the temperature;It is cold But, phosphate buffer regulation system pH value is added to 2.0~6.0, filtering can be obtained phosphate modified polyacrylate water Dispersion.
In some preferred technical solutions: the priming paint by 35~50 mass parts vinylidene chloride-acrylonitrile-acrylic acid Ester multi-copolymerization emulsion, the phosphate modified polyacrylate aqueous dispersion of 15~35 mass parts, 0.4~1.5 mass parts it is non- Ionic wetting dispersing agent, the anti-settling agent of 0.1~0.5 mass parts, the pigment of 2~7 mass parts, 5~20 mass parts filler, The polyether silicone defoaming agent of 0.05~0.2 mass parts, the coalescing agent of 1~5 mass parts, the substrate profit of 0.1~0.5 mass parts Humectant, the isothiazolinone of 0.1~0.3 mass parts, the polyurethane associative thickener of 0.3~1.2 mass parts and 10~20 matter Measure the water composition of part.
Described in technical solution of the present invention vinylidene chloride-acrlylonitrile-acrylate multi-copolymerization emulsion preparation method Mixed surfactant is Nonyl pheno base ether, MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride and cetyl front three The mixture of base ammonium bromide, the mixed proportion of three are 1:1.5:1.
Blending surface described in the phosphate modified polyacrylate aqueous dispersion preparation method of technical solution of the present invention is living Property agent be Nonyl pheno base ether, MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride and 1- allyloxy -3- (4- nonyl benzene Phenol) -2- propyl alcohol polyoxyethylene (10) ether monophosphate mixture, the mixed proportion of three is 1:1:2.
In technical solution of the present invention: the anti-settling agent is fumed silica or the sea organically-modified lithium of this BENTONE-LT of name Montmorillonite auxiliary rheological agents;The pigment is iron oxide red, iron oxide black or carbon black;The filler be blanc fixe, sericite, One or more of talcum powder;The coalescing agent is alcohol ester 12 or dipropylene;The non-ionic wetting Dispersing agent is 190 wetting dispersing agent of Digao Dispers 757W wetting dispersing agent or Bi Ke DISPERBYK;The polyethers silicon Oxygen alkane defoaming agent is 810 defoaming agent of Digao Foamex;245 substrate wetting agents of substrate wetting agents Digao Wet KL are finished Gram BYK-345 substrate wetting agents or Bi Ke BYK-346 substrate wetting agents;The polyurethane associative thickener is Hai Mingsi 299 thickener of RHEOLATE.
A kind of aqueous rust suitable for corroding steel surface shifts the preparation method of priming paint, and this method is the condition in stirring The lower non-ionic wetting dispersing agent that 0.1~10 mass parts are sequentially added into the water of 10~50 mass parts, 0.1~5 mass parts Anti-settling agent, the pigment of 1~15 mass parts, the filler of 1~20 mass parts and 0.01~1 mass parts polyether silicone defoaming Agent is dispersed with stirring to uniformly without agglomeration, obtaining slurry;Then, slurry fineness is ground to less than 40 μm using sand mill, stirring Vinylidene chloride-acrlylonitrile-acrylate multi-copolymerization emulsion, 10 of 10~50 mass parts is added in the lower slurry to after grinding The phosphate modified polyacrylate aqueous dispersions of~50 mass parts, the coalescing agent of 1~10 mass parts, 0.1~1 mass parts The polyurethane associative thickener of substrate wetting agents, the isothiazolinone of 0.1~1 mass parts, 0.3~3 mass parts is stirred to equal Even no shrinkage cavity can be obtained aqueous rust transfer priming paint;
Wherein: the vinylidene chloride-acrlylonitrile-acrylate multi-copolymerization emulsion is to be prepared via a method which It arrives: by the vinylidene chloride of 60~80 mass parts, the acrylonitrile of 5~10 mass parts, the acrylic acid of 2~5 mass parts, 10~20 matter Measure the esters of acrylic acid soft monomer of part, the water of 80~120 mass parts of mixed surfactant of 2~6 mass parts is made under stiring At monomer pre-emulsion, the esters of acrylic acid soft monomer is n-butyl acrylate or Isooctyl acrylate monomer;Take 1/5 monomer pre- Lotion is added in the reactor of nitrogen protection, is warming up to 55~65 DEG C;By the azo diisobutyl amidine salt of 0.3~1.2 mass parts Hydrochlorate initiator is configured to 10% aqueous solution, takes in wherein 1/5 initiator solution addition reactor, stirring polymerization 1h;It Remaining monomer pre-emulsion and remaining initiator solution are instilled in reactor simultaneously afterwards, 3~4h is added dropwise, and after It is continuous to be stirred to react 1h;Then, 70 DEG C are warming up to, 1h is kept the temperature;It is cooling, addition phosphate buffer regulation system pH value to 2.0~ 4.5;Filtering, can be obtained vinylidene chloride-acrlylonitrile-acrylate multi-copolymerization emulsion;
The phosphate modified polyacrylate aqueous dispersion is to be prepared via a method which to obtain: by 25~45 mass Senecioate-the etherophosphoric acid of part, the acrylic acid of 2~5 mass parts, the methyl methacrylate of 25~40 mass parts, 15~35 The butyl acrylate of mass parts, the azodiisobutyronitrile of 0.2~1.0 mass parts, 2~8 mass parts mixed surfactant and Monomer-initiator mixing pre-emulsion is made in the water of 90~130 mass parts under high velocity agitation;Take the 1/4 pre- cream of above-mentioned mixing Change liquid to be added in the reactor of nitrogen protection, is warming up to 65~70 DEG C, stirring polymerization 1h;Later by remaining mixing pre-emulsion It is slowly dropped into reactor, 3~4h is added dropwise, and continues to be stirred to react 1h;Then, 80~90 DEG C are warming up to, 1h is kept the temperature;It is cold But, phosphate buffer regulation system pH value is added to 2.0~6.0, filtering can be obtained phosphate modified polyacrylate water Dispersion.
The above-mentioned aqueous rust suitable for corroding steel surface shifts the preparation method of priming paint: being formulated the mass parts of each component It is as follows:
The phosphorus of the vinylidene chloride of 35~50 mass parts-acrlylonitrile-acrylate multi-copolymerization emulsion, 15~35 mass parts Acid esters modified polyacrylate aqueous dispersion, the non-ionic wetting dispersing agent of 0.4~1.5 mass parts, 0.1~0.5 mass parts Anti-settling agent, the pigment of 2~7 mass parts, the filler of 5~20 mass parts, 0.05~0.2 mass parts polyether silicone defoaming Agent, the coalescing agent of 1~5 mass parts, the substrate wetting agents of 0.1~0.5 mass parts, 0.1~0.3 mass parts isothiazoline The water of ketone, the polyurethane associative thickener of 0.3~1.2 mass parts and 10~20 mass parts.
The above-mentioned aqueous rust suitable for corroding steel surface shifts the preparation method of priming paint: the anti-settling agent is gas phase two Silica or the sea organically-modified hectorite auxiliary rheological agents of this BENTONE-LT of name;The pigment is iron oxide red, iron oxide black Or carbon black;The filler is one or more of blanc fixe, sericite, talcum powder;The coalescing agent is alcohol ester ten Two or dipropylene;The non-ionic wetting dispersing agent is Digao Dispers 757W wetting dispersing agent or Bi Ke 190 wetting dispersing agent of DISPERBYK;The polyether silicone defoaming agent is 810 defoaming agent of Digao Foamex;The base 245 substrate wetting agents of material wetting agent Digao Wet KL or the wetting of Bi Ke BYK-345 substrate wetting agents or Bi Ke BYK-346 substrate Agent;The polyurethane associative thickener is 299 thickener of Hai Mingsi RHEOLATE.
The above-mentioned aqueous rust suitable for corroding steel surface shifts the preparation method of priming paint: vinylidene chloride-acrylonitrile- Mixed surfactant described in acrylate multi-copolymerization emulsion is Nonyl pheno base ether, methylacryoyloxyethyl The mixture of trimethyl ammonium chloride and cetyl trimethylammonium bromide, the mixed proportion of three are 1:1.5:1.
The above-mentioned aqueous rust suitable for corroding steel surface shifts the preparation method of priming paint: phosphate modified polyacrylic acid Mixed surfactant described in ester aqueous dispersion is Nonyl pheno base ether, methylacryoyloxyethyl trimethyl ammonia chloride The mixture of ammonium and 1- allyloxy -3- (4- nonyl phenol) -2- propyl alcohol polyoxyethylene (10) ether monophosphate, the mixing ratio of three Example is 1:1:2.
Aqueous rust transfer priming paint disclosed in this invention mainly passes through infiltration, two modes of action of conversion realize the stabilization of iron rust Change.Firstly, film forming matter and macromolecular is helped to turn rust agent supplemented by the phosphate modified polyacrylate aqueous dispersion of design.Both it participates in setting Rouge film forming, and stable metal salt can be formed with iron rust, it is strong, easy to overcome inorganic phosphate, small molecule organic phosphoric acid free property The problems such as migration.Secondly, the vinylidene chloride-the third that synthesis partial size is small, permeability is strong, adhesive force is high, dry film vapour resistance is good Alkene nitrile-acrylate multi-copolymerization emulsion is main film forming matter.Pass through itself and phosphate modified polyacrylate aqueous dispersion Film forming altogether forms firm iron rust clad, inhibits corrosion diffusion.Third, entire resin system use quasi- soap-free polymerization and sun Ion emulsification system.While promoting resin shear stability, have lower pH value, can effectively avoid resin dechlorination decomposition. 4th, unique double film forming matter blending systems make product can be according to rusty scale thickness flexibly adjustment vinylidene chloride-acrylonitrile- The portfolio ratio of acrylate multi-copolymerization emulsion and phosphate modified polyacrylate aqueous dispersion, obtain it is optimal turn rust, Protection effect.
Beneficial effects of the present invention:
Aqueous rust transfer priming paint storage stability height, turn rust excellent in efficiency, the adhesive force of the disclosure of the invention are good, the coating of formation Possess excellent vapour resistance, resistance to salt water, humidity resistance and long-effective corrosion.
Specific embodiment
Below with reference to embodiment, the present invention will be further described, and but the scope of the present invention is not limited thereto:
Embodiment 1
(1) vinylidene chloride-acrlylonitrile-acrylate multi-copolymerization emulsion preparation: by inclined two chloroethene of 75 mass parts Alkene, the acrylonitrile of 5 mass parts, the acrylic acid of 2.5 mass parts, the Isooctyl acrylate monomer of 15 mass parts, 4 mass parts blending surface Activating agent (Nonyl pheno base ether, MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride and cetyl trimethylammonium bromide Mixture, the mixed proportion of three is 1:1.5:1), the water of 100 mass parts monomer pre-emulsion is made under stiring.Take 1/5 Above-mentioned mix monomer pre-emulsion be added nitrogen protection reactor in, be warming up to 60 DEG C.By two isobutyl of azo of 0.6 mass parts Base amidine hydrochloric acid salt initiators are configured to 10% aqueous solution, take in wherein 1/5 initiator solution addition reactor, stirring polymerization 1h.Remaining mix monomer pre-emulsion and initiator solution are instilled in reactor simultaneously, 4h is added dropwise, and continues to stir Mix reaction 1h.Then, 70 DEG C are warming up to, 1h is kept the temperature.It is cooling, phosphate buffer regulation system pH value is added to 2.0~4.5. Filtering can be obtained solid vinylidene chloride-acrlylonitrile-acrylate multi-copolymerization emulsion containing for 49.8%.
(2) preparation of phosphate modified polyacrylate aqueous dispersion: by senecioate-etherophosphoric acid of 40 mass parts, 3 The acrylic acid of mass parts, the methyl methacrylate of 35 mass parts, the butyl acrylate of 10 mass parts, 0.4 mass parts azo Mixed surfactant (the Nonyl pheno base ether, methylacryoyloxyethyl trimethyl chlorine of bis-isobutyronitrile, 3 mass parts Change the mixture of ammonium and 1- allyloxy -3- (4- nonyl phenol) -2- propyl alcohol polyoxyethylene (10) ether monophosphate, the mixing of three Ratio is 1:1:2), the water of 110 mass parts monomer-initiator mixing pre-emulsion is made under high velocity agitation.Take 1/4 it is above-mentioned It mixes pre-emulsion to be added in the reactor of nitrogen protection, is warming up to 70 DEG C, stirring polymerization 1h.By remaining mixing pre-emulsion It is slowly dropped into reactor, 3.5h is added dropwise, and continues to be stirred to react 1h.Then, 90 DEG C are warming up to, 1h is kept the temperature.It is cooling, add Enter phosphate buffer regulation system pH value to 2.0~6.0.Filtering, can be obtained it is solid containing for 43.5% it is phosphate modified poly- Acrylate aqueous dispersion.
(3) enlightening of 0.8 mass parts the preparation of aqueous rust transfer priming paint: is sequentially added into the water of 11 mass parts under stiring High Dispers 757W wetting dispersing agent, 200 fumed silica of Degussa AEROSIL of 0.2 mass parts, 7 mass parts oxygen Change the Digao Foamex810 defoaming of iron oxide black pigment, the blanc fixe of 12 mass parts, the sericite of 5 mass parts, 0.05 mass parts Agent is dispersed with stirring to uniformly without agglomeration, obtaining slurry.Then, slurry fineness is ground to less than 40 μm using sand mill.It is stirring The phosphoric acid of the lower vinylidene chloride that 45 mass parts are added into slurry-acrlylonitrile-acrylate multi-copolymerization emulsion, 15 mass parts Ester modified polyacrylate aqueous dispersion, the dipropylene of 4.5 mass parts, 0.2 mass parts 245 base of Digao Wet KL This 299 thickener of RHEOLATE of material wetting agent, the isothiazolinone of 0.2 mass parts, the extra large name of 0.5 mass parts, is stirred until homogeneous No shrinkage cavity can be obtained the solid aqueous rust transfer priming paint #1 containing for 54.2%.
Embodiment 2
(1) vinylidene chloride-acrlylonitrile-acrylate multi-copolymerization emulsion preparation: same as Example 1.
(2) preparation of phosphate modified polyacrylate aqueous dispersion: same as Example 1.
(3) enlightening of 0.8 mass parts the preparation of aqueous rust transfer priming paint: is sequentially added into the water of 11 mass parts under stiring High Dispers 757W wetting dispersing agent, 200 fumed silica of Degussa AEROSIL of 0.2 mass parts, 7 mass parts oxygen Change the Digao Foamex810 defoaming of iron oxide black pigment, the blanc fixe of 12 mass parts, the sericite of 5 mass parts, 0.05 mass parts Agent is dispersed with stirring to uniformly without agglomeration, obtaining slurry.Then, slurry fineness is ground to less than 40 μm using sand mill.It is stirring The phosphoric acid of the lower vinylidene chloride that 30 mass parts are added into slurry-acrlylonitrile-acrylate multi-copolymerization emulsion, 30 mass parts Ester modified polyacrylate aqueous dispersion, the dipropylene of 3.5 mass parts, 0.2 mass parts 245 base of Digao Wet KL This 299 thickener of RHEOLATE of material wetting agent, the isothiazolinone of 0.2 mass parts, the extra large name of 0.5 mass parts, is stirred until homogeneous No shrinkage cavity can be obtained the solid aqueous rust transfer priming paint #2 containing for 53.9%.
The main performance index of aqueous rust transfer priming paint #1 (embodiment 1) and aqueous rust transfer priming paint #2 (embodiment 2) is such as Under:
The key technical indexes of the aqueous rust transfer priming paint of table 1
Main performance index of the aqueous rust transfer priming paint of table 2 under different rusty scale thickness
[a]Test plate (panel) applies 2 aqueous rust transfer priming paint, and for 24 hours, paint film overall thickness (50 ± 10) μm, curing period is at per pass interval 7d;[b]Test plate (panel) applies 2 aqueous rust and shifts priming paint and 1 single-component water-based acrylic acid top-coat, per pass interval for 24 hours, priming paint total thickness It spends (50 ± 10) μm, finishing coat overall thickness (25 ± 5) μm, curing period 7d.Film thickness is on the sandblasting steel plate that applies under equal conditions Subject to film thickness.
Water resistance, resistance to salt water, humidity resistance and the salt fog resistance of two aqueous rust transfer priming paint are compared it can be found that phosphorus The lower priming paint #1 of acid esters modified polyacrylate aqueous dispersion ratio is more suitable for being protected under low rusty scale thickness.Improve phosphorus After acid esters modified polyacrylate aqueous dispersion ratio (priming paint #2), priming paint turns rust ability and is obviously improved, under high rusty scale thickness Guard time be obviously prolonged.It can be seen that double film forming matter blending systems that the present invention designs can be adjusted according to rusty scale thickness and be led The portfolio ratio of film forming matter and auxiliary film forming matter obtains optimal turn of rust, protection effect.
Embodiment 3
(1) vinylidene chloride-acrlylonitrile-acrylate multi-copolymerization emulsion preparation: by inclined two chloroethene of 60 mass parts Alkene, the acrylonitrile of 8 mass parts, the acrylic acid of 3 mass parts, the n-butyl acrylate of 10 mass parts, the blending surface of 3 mass parts are living Property agent (Nonyl pheno base ether, MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride and cetyl trimethylammonium bromide Monomer pre-emulsion is made for the water of 1:1.5:1), 100 mass parts in the mixed proportion of mixture, three under stiring.Take 1/5 Above-mentioned mix monomer pre-emulsion is added in the reactor of nitrogen protection, is warming up to 60 DEG C.By the azo diisobutyl of 0.4 mass parts Amidine hydrochloric acid salt initiators are configured to 10% aqueous solution, take in wherein 1/5 initiator solution addition reactor, stirring polymerization 1h.Remaining mix monomer pre-emulsion and initiator solution are instilled in reactor simultaneously, 3.5h is added dropwise, and continues It is stirred to react 1h.Then, 70 DEG C are warming up to, 1h is kept the temperature.It is cooling, addition phosphate buffer regulation system pH value to 2.0~ 4.5.Filtering can be obtained solid vinylidene chloride-acrlylonitrile-acrylate multi-copolymerization emulsion containing for 45.5%.
(2) preparation of phosphate modified polyacrylate aqueous dispersion: by senecioate-etherophosphoric acid of 25 mass parts, 2 The acrylic acid of mass parts, the methyl methacrylate of 40 mass parts, the butyl acrylate of 20 mass parts, 0.5 mass parts azo Mixed surfactant (the Nonyl pheno base ether, methylacryoyloxyethyl trimethyl chlorine of bis-isobutyronitrile, 5 mass parts Change the mixture of ammonium and 1- allyloxy -3- (4- nonyl phenol) -2- propyl alcohol polyoxyethylene (10) ether monophosphate, the mixing of three Ratio is 1:1:2), the water of 110 mass parts monomer-initiator mixing pre-emulsion is made under high velocity agitation.Take 1/4 it is above-mentioned It mixes pre-emulsion to be added in the reactor of nitrogen protection, is warming up to 70 DEG C, stirring polymerization 1h.By remaining mixing pre-emulsion It is slowly dropped into reactor, 4h is added dropwise, and continues to be stirred to react 1h.Then, 90 DEG C are warming up to, 1h is kept the temperature.It is cooling, it is added Phosphate buffer regulation system pH value is to 2.0~6.0.Filtering can be obtained solid phosphate modified poly- third containing for 45.2% Olefin(e) acid ester aqueous dispersion.
(3) finishing for 0.3 mass parts the preparation of aqueous rust transfer priming paint: is sequentially added into the water of 10 mass parts under stiring Gram 190 wetting dispersing agent of DISPERBYK, the extra large name of 0.4 mass parts this BENTONE LT montmorillonitic clay class auxiliary rheological agents, 6.5 The ferric oxide red colorant of mass parts, the blanc fixe of 7 mass parts, the talcum powder of 6 mass parts, 0.1 mass parts Digao 810 defoaming agent of Foamex is dispersed with stirring to uniformly without agglomeration.Then, slurry fineness is ground to less than 40 μm using sand mill. Vinylidene chloride-acrlylonitrile-acrylate multi-copolymerization emulsion, 35 mass parts of 35 mass parts are added into slurry under stiring Phosphate modified polyacrylate aqueous dispersion, the alcohol esters 12 of 2.5 mass parts, 0.1 mass parts Bi Ke BYK-345 substrate This 299 thickener of RHEOLATE of wetting agent, the isothiazolinone of 0.2 mass parts, the extra large name of 0.8 mass parts, is stirred until homogeneous nothing Shrinkage cavity can be obtained the solid aqueous rust transfer priming paint containing for 49.8%.It is water resistance >=5d of the primer coating (50 ± 10 μm), resistance to Salt >=3d, humidity resistance >=168h, salt fog resistance >=120h.
Embodiment 4
(1) vinylidene chloride-acrlylonitrile-acrylate multi-copolymerization emulsion preparation: by inclined two chloroethene of 65 mass parts Alkene, the acrylonitrile of 6 mass parts, the acrylic acid of 3 mass parts, the n-butyl acrylate of 12 mass parts, 2.5 mass parts blending surface Activating agent (Nonyl pheno base ether, MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride and cetyl trimethylammonium bromide Mixture, the mixed proportion of three is 1:1.5:1), the water of 100 mass parts monomer pre-emulsion is made under stiring.Take 1/5 Above-mentioned mix monomer pre-emulsion be added nitrogen protection reactor in, be warming up to 60 DEG C.By two isobutyl of azo of 0.3 mass parts Base amidine hydrochloric acid salt initiators are configured to 10% aqueous solution, take in wherein 1/5 initiator solution addition reactor, stirring polymerization 1h.Remaining mix monomer pre-emulsion and initiator solution are instilled in reactor simultaneously, 3.5h is added dropwise, and continues It is stirred to react 1h.Then, 70 DEG C are warming up to, 1h is kept the temperature.It is cooling, addition phosphate buffer regulation system pH value to 2.0~ 4.5.Filtering can be obtained solid vinylidene chloride-acrlylonitrile-acrylate multi-copolymerization emulsion containing for 47.0%.
(2) preparation of phosphate modified polyacrylate aqueous dispersion: by senecioate-etherophosphoric acid of 30 mass parts, The acrylic acid of 2.5 mass parts, the methyl methacrylate of 32 mass parts, the butyl acrylate of 26 mass parts, 0.7 mass parts idol Mixed surfactant (the Nonyl pheno base ether, methylacryoyloxyethyl trimethyl of nitrogen bis-isobutyronitrile, 4 mass parts The mixture of ammonium chloride and 1- allyloxy -3- (4- nonyl phenol) -2- propyl alcohol polyoxyethylene (10) ether monophosphate, three's is mixed Monomer-initiator mixing pre-emulsion is made for the water of 1:1:2), 110 mass parts in composition and division in a proportion example under high velocity agitation.Take 1/4 it is upper It states mixing pre-emulsion to be added in the reactor of nitrogen protection, is warming up to 70 DEG C, stirring polymerization 1h.By remaining mixing pre-emulsification Liquid is slowly dropped into reactor, and 4h is added dropwise, and continues to be stirred to react 1h.Then, 90 DEG C are warming up to, 1h is kept the temperature.It is cooling, add Enter phosphate buffer regulation system pH value to 2.0~6.0.Filtering, can be obtained it is solid containing for 46.1% it is phosphate modified poly- Acrylate aqueous dispersion.
(3) Bi Ke of 1 mass parts the preparation of aqueous rust transfer priming paint: is sequentially added into the water of 18 mass parts under stiring 190 wetting dispersing agent of DISPERBYK, 200 fumed silicas of Degussa AEROSIL of 0.4 mass parts, 3.5 mass parts Carbon black pigment, the blanc fixe of 8 mass parts, 0.1 mass parts 810 defoaming agent of Digao Foamex, be dispersed with stirring to uniform nothing Agglomeration.Then, slurry fineness is ground to less than 40 μm using sand mill.Inclined the two of 48 mass parts are added into slurry under stiring Chloride-acrylonitrile-acrylate multi-copolymerization emulsion, the phosphate modified polyacrylate aqueous dispersion of 20 mass parts, 1 matter Measure dipropylene, the Bi Ke BYK-346 substrate wetting agents of 0.5 mass parts, the isothiazolinone of 0.2 mass parts, 1 matter of part This 299 thickener of RHEOLATE of the extra large name of part is measured, being stirred until homogeneous no shrinkage cavity can be obtained the solid aqueous rust turn containing for 43.0% Move priming paint.Water resistance >=7d, resistance to salt water >=4d, the humidity resistance >=192h, salt fog resistance of the primer coating (50 ± 10 μm) ≥120h。

Claims (6)

1. a kind of aqueous rust suitable for corroding steel surface shifts priming paint, it is characterised in that: the priming paint is by 10 ~ 50 mass parts The phosphate modified polyacrylate moisture of vinylidene chloride-acrlylonitrile-acrylate multi-copolymerization emulsion, 10 ~ 50 mass parts Granular media, the non-ionic wetting dispersing agent of 0.1 ~ 10 mass parts, the anti-settling agent of 0.1 ~ 5 mass parts, the pigment of 1 ~ 15 mass parts, 1 ~ The filler of 20 mass parts, the polyether silicone defoaming agent of 0.01 ~ 1 mass parts, the coalescing agent of 1 ~ 10 mass parts, 0.1 ~ 1 mass The polyurethane associative thickener and 1 ~ 30 of the substrate wetting agents of part, the isothiazolinone of 0.1 ~ 1 mass parts, 0.3 ~ 3 mass parts The water of mass parts forms;
Wherein: the vinylidene chloride-acrlylonitrile-acrylate multi-copolymerization emulsion is to be prepared via a method which to obtain:
(1) by the vinylidene chloride of 60 ~ 80 mass parts, the acrylonitrile of 5 ~ 10 mass parts, the acrylic acid of 2 ~ 5 mass parts, 10 ~ 20 matter The water of the esters of acrylic acid soft monomer of part, the mixed surfactant of 2 ~ 6 mass parts and 80 ~ 120 mass parts is measured in stirring condition Under be made monomer pre-emulsion, the esters of acrylic acid soft monomer is n-butyl acrylate or Isooctyl acrylate monomer;
(2) it takes 1/5 monomer pre-emulsion to be added in the reactor of nitrogen protection first, is warming up to 55 ~ 65 °C;Secondly by 0.3 ~ The azo diisobutyl amidine hydrochloric acid salt initiators of 1.2 mass parts are configured to 10% aqueous solution, take wherein 1/5 initiator solution It is added in reactor, 1 h of stirring polymerization;Remaining monomer pre-emulsion and remaining initiator solution are instilled simultaneously later In reactor, 3 ~ 4 h are added dropwise, and continue to be stirred to react 1 h;Finally, being warming up to 70 °C, 1 h is kept the temperature, it is cooling, phosphorus is added For phthalate buffer regulation system pH value to 2.0 ~ 4.5, it is polynary total to can be obtained vinylidene chloride-acrlylonitrile-acrylate for filtering Poly- lotion;
The phosphate modified polyacrylate aqueous dispersion is prepared via a method which to obtain: by 25 ~ 45 mass parts Senecioate-etherophosphoric acid, the acrylic acid of 2 ~ 5 mass parts, the methyl methacrylate of 25 ~ 40 mass parts, 15 ~ 35 mass parts Butyl acrylate, the azodiisobutyronitrile of 0.2 ~ 1.0 mass parts, the mixed surfactant of 2 ~ 8 mass parts and 90 ~ 130 mass Monomer-initiator mixing pre-emulsion is made in the water of part under high velocity agitation;It takes the 1/4 mixing pre-emulsion that nitrogen is added to protect In the reactor of shield, 65 ~ 70 °C are warming up to, 1 h of stirring polymerization;Remaining mixing pre-emulsion is slowly dropped into reactor later In, 3 ~ 4 h are added dropwise, and continue to be stirred to react 1 h;Then, 80 ~ 90 °C are warming up to, 1 h is kept the temperature;It is cooling, phosphate is added For buffer regulation system pH value to 2.0 ~ 6.0, filtering can be obtained phosphate modified polyacrylate aqueous dispersion;
Mixed surfactant described in vinylidene chloride-acrlylonitrile-acrylate multi-copolymerization emulsion preparation method is nonyl The mixture of base phenol polyethenoxy base ether, MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride and cetyl trimethylammonium bromide, The mixed proportion of three is 1:1.5:1;
Mixed surfactant described in phosphate modified polyacrylate aqueous dispersion preparation method is polyoxyethylene nonyl phenyl second Alkene ether, MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride and 1- allyloxy -3-(4- nonyl phenol) -2- propyl alcohol polyoxyethylene (10) mixture of ether monophosphate, the mixed proportion of three are 1:1:2.
2. the aqueous rust transfer priming paint according to claim 1 for being suitable for corroding steel surface, it is characterised in that: the priming paint By vinylidene chloride-acrlylonitrile-acrylate multi-copolymerization emulsion of 35 ~ 50 mass parts, 15 ~ 35 mass parts it is phosphate modified Polyacrylate aqueous dispersion, the non-ionic wetting dispersing agent of 0.4 ~ 1.5 mass parts, the anti-settling agent of 0.1 ~ 0.5 mass parts, 2 ~ The pigment of 7 mass parts, the filler of 5 ~ 20 mass parts, the polyether silicone defoaming agent of 0.05 ~ 0.2 mass parts, 1 ~ 5 mass parts at Film auxiliary agent, the substrate wetting agents of 0.1 ~ 0.5 mass parts, the isothiazolinone of 0.1 ~ 0.3 mass parts, 0.3 ~ 1.2 mass parts it is poly- Urethane association thickener and the water of 10 ~ 20 mass parts composition.
3. the aqueous rust transfer priming paint according to claim 1 for being suitable for corroding steel surface, it is characterised in that: described Anti-settling agent is fumed silica or the sea organically-modified hectorite auxiliary rheological agents of this BENTONE-LT of name;The pigment is oxidation Iron oxide red, iron oxide black or carbon black;The filler is one or more of blanc fixe, sericite, talcum powder;The film forming Auxiliary agent is alcohol ester 12 or dipropylene;The non-ionic wetting dispersing agent is Digao Dispers 757W wetting point 190 wetting dispersing agent of powder or Bi Ke DISPERBYK;The polyether silicone defoaming agent is the defoaming of Digao Foamex 810 Agent;245 substrate wetting agents of substrate wetting agents Digao Wet KL or Bi Ke BYK-345 substrate wetting agents or Bi Ke BYK- 346 substrate wetting agents;The polyurethane associative thickener is 299 thickener of Hai Mingsi RHEOLATE.
4. it is a kind of suitable for corrode steel surface aqueous rust shift priming paint preparation method, it is characterised in that: this method be Sequentially added under conditions of stirring into the water of 10 ~ 50 mass parts 0.1 ~ 10 mass parts non-ionic wetting dispersing agent, 0.1 ~ 5 The anti-settling agent of mass parts, the pigment of 1 ~ 15 mass parts, the filler of 1 ~ 20 mass parts and 0.01 ~ 1 mass parts polyether silicone disappear Infusion is dispersed with stirring to uniformly without agglomeration, obtaining slurry;Then, slurry fineness is ground to less than 40 μm using sand mill, Vinylidene chloride-acrlylonitrile-acrylate multi-component copolymer cream of 10 ~ 50 mass parts is added under stirring into the slurry after grinding Liquid, the phosphate modified polyacrylate aqueous dispersion of 10 ~ 50 mass parts, the coalescing agent of 1 ~ 10 mass parts, 0.1 ~ 1 mass parts Substrate wetting agents, the isothiazolinone of 0.1 ~ 1 mass parts, 0.3 ~ 3 mass parts polyurethane associative thickener, stirring is to equal Even no shrinkage cavity can be obtained aqueous rust transfer priming paint;
Wherein: the vinylidene chloride-acrlylonitrile-acrylate multi-copolymerization emulsion is to be prepared via a method which to obtain: By the vinylidene chloride of 60 ~ 80 mass parts, the acrylonitrile of 5 ~ 10 mass parts, the acrylic acid of 2 ~ 5 mass parts, 10 ~ 20 mass parts Esters of acrylic acid soft monomer, 2 ~ 6 mass parts the water of 80 ~ 120 mass parts of mixed surfactant that monomer is made under stiring is pre- Emulsion, the esters of acrylic acid soft monomer are n-butyl acrylate or Isooctyl acrylate monomer;1/5 monomer pre-emulsion is taken to be added In the reactor of nitrogen protection, it is warming up to 55 ~ 65 °C;By the azo diisobutyl amidine hydrochloric acid salt initiators of 0.3 ~ 1.2 mass parts It is configured to 10% aqueous solution, is taken in wherein 1/5 initiator solution addition reactor, 1 h of stirring polymerization;It later will be remaining Monomer pre-emulsion and remaining initiator solution instill in reactor simultaneously, and 3 ~ 4 h are added dropwise, and continue to be stirred to react 1 h;Then, 70 °C are warming up to, 1 h is kept the temperature;It is cooling, phosphate buffer regulation system pH value is added to 2.0 ~ 4.5;Filtering, It can be obtained vinylidene chloride-acrlylonitrile-acrylate multi-copolymerization emulsion;
The phosphate modified polyacrylate aqueous dispersion is prepared via a method which to obtain: by 25 ~ 45 mass parts Senecioate-etherophosphoric acid, the acrylic acid of 2 ~ 5 mass parts, the methyl methacrylate of 25 ~ 40 mass parts, 15 ~ 35 mass parts Butyl acrylate, the azodiisobutyronitrile of 0.2 ~ 1.0 mass parts, the mixed surfactant of 2 ~ 8 mass parts and 90 ~ 130 mass Monomer-initiator mixing pre-emulsion is made in the water of part under high velocity agitation;Take 1/4 above-mentioned mixing pre-emulsion that nitrogen is added In the reactor of protection, 65 ~ 70 °C are warming up to, 1 h of stirring polymerization;Remaining mixing pre-emulsion is slowly dropped into reaction later In device, 3 ~ 4 h are added dropwise, and continue to be stirred to react 1 h;Then, 80 ~ 90 °C are warming up to, 1 h is kept the temperature;It is cooling, phosphoric acid is added For salt buffer regulation system pH value to 2.0 ~ 6.0, filtering can be obtained phosphate modified polyacrylate aqueous dispersion;
Mixed surfactant described in vinylidene chloride-acrlylonitrile-acrylate multi-copolymerization emulsion preparation method is nonyl The mixture of base phenol polyethenoxy base ether, MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride and cetyl trimethylammonium bromide, The mixed proportion of three is 1:1.5:1;
Mixed surfactant described in phosphate modified polyacrylate aqueous dispersion preparation method is polyoxyethylene nonyl phenyl second Alkene ether, MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride and 1- allyloxy -3-(4- nonyl phenol) -2- propyl alcohol polyoxyethylene (10) mixture of ether monophosphate, the mixed proportion of three are 1:1:2.
5. the preparation method of the aqueous rust transfer priming paint according to claim 4 for being suitable for corroding steel surface, feature Be: the mass parts of each component are as follows in the priming paint:
The vinylidene chloride of 35 ~ 50 mass parts-acrlylonitrile-acrylate multi-copolymerization emulsion, 15 ~ 35 mass parts phosphate change Property polyacrylate aqueous dispersion, the non-ionic wetting dispersing agent of 0.4 ~ 1.5 mass parts, 0.1 ~ 0.5 mass parts anti-settling agent, The pigment of 2 ~ 7 mass parts, the filler of 5 ~ 20 mass parts, the polyether silicone defoaming agents of 0.05 ~ 0.2 mass parts, 1 ~ 5 mass parts Coalescing agent, the substrate wetting agents of 0.1 ~ 0.5 mass parts, the isothiazolinone of 0.1 ~ 0.3 mass parts, 0.3 ~ 1.2 mass parts The water of polyurethane associative thickener and 10 ~ 20 mass parts.
6. the preparation method of the aqueous rust transfer priming paint according to claim 4 for being suitable for corroding steel surface, feature Be: the anti-settling agent is fumed silica or the sea organically-modified hectorite auxiliary rheological agents of this BENTONE-LT of name;It is described Pigment is iron oxide red, iron oxide black or carbon black;The filler is one of blanc fixe, sericite, talcum powder or several Kind;The coalescing agent is alcohol ester 12 or dipropylene;The non-ionic wetting dispersing agent is Digao Dispers 190 wetting dispersing agent of 757W wetting dispersing agent or Bi Ke DISPERBYK;The polyether silicone defoaming agent is Digao 810 defoaming agent of Foamex;245 substrate wetting agents of substrate wetting agents Digao Wet KL or Bi Ke BYK-345 substrate profit Humectant or Bi Ke BYK-346 substrate wetting agents;The polyurethane associative thickener is the thickening of Hai Mingsi RHEOLATE 299 Agent.
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