CN107043590A - A kind of anti-corrosion polyurethane coating - Google Patents

A kind of anti-corrosion polyurethane coating Download PDF

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Publication number
CN107043590A
CN107043590A CN201710327904.9A CN201710327904A CN107043590A CN 107043590 A CN107043590 A CN 107043590A CN 201710327904 A CN201710327904 A CN 201710327904A CN 107043590 A CN107043590 A CN 107043590A
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parts
agent
polyurethane coating
coating
corrosion
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Inventor
章友芳
刘君
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Jiangsu Suwoshangxin Mstar Technology Ltd
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Jiangsu Suwoshangxin Mstar Technology Ltd
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Priority to CN201710327904.9A priority Critical patent/CN107043590A/en
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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
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • 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
    • C08F220/26—Esters containing oxygen in addition to the carboxy oxygen
    • C08F220/28—Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety
    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/65—Additives macromolecular
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • 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
    • C08F220/26—Esters containing oxygen in addition to the carboxy oxygen
    • C08F220/28—Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety
    • C08F220/281—Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety and containing only one oxygen, e.g. furfuryl (meth)acrylate or 2-methoxyethyl (meth)acrylate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2237—Oxides; Hydroxides of metals of titanium
    • C08K2003/2241—Titanium dioxide
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2296—Oxides; Hydroxides of metals of 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
    • 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
    • C08K2003/329—Phosphorus containing acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
    • C08L2205/16—Fibres; Fibrils

Abstract

The invention discloses a kind of anti-corrosion polyurethane coating, including：Waterborne polyurethane resin, acrylic dispersion, CPVC, isocyanate curing agent, paraffin, chlorinated rubber, silica dioxide gel, propane diols, nano titanium oxide, polyetheretherketonefiber fiber, water, ethanol, tripolyphosphate, trbasic zinc phosphate, zinc oxide, dispersant, defoamer, levelling agent, plasticizer, thickener, coupling agent, anti-flash rusting agent.The anticorrosive paint of the present invention has excellent salt fog resistance and weatherability, and preparation method simply, is easily operated, mild condition, industrialized production is more suitable for, with promotional value.

Description

A kind of anti-corrosion polyurethane coating
Technical field
The present invention relates to a kind of coating, especially a kind of anti-corrosion polyurethane coating.
Background technology
Coating at every moment can all touch it in our daily lifes, up to aircraft industry, under to manufactured goods It will be used.Due to its be widely used in various metals, timber, cement, masonry, leather, fabric, plastics, rubber, glass and The product surfaces such as paper, have consequence in national economy and national defense construction, and its development not only indicates the hair of industry Speed and technical merit are opened up, while also indicating the raising and growth of people's lives and culture and education.
Coating is etch-proof important materials, and the continuous film of firm attachment can be formed on coated article face, be allowed to from Various corrosive mediums（Such as the moisture in air, oxygen, industrial atmosphere, the aqueous solution of chemical liquid etc.）Corrode, can also make japanning thing Body surface face is reduced or from mechanical damage and the corrosion exposed to the sun and rain and brought, so as to extend its service life.
Polyurethane (Polyurethane, PU) is the abbreviation of polyurethanes, by polyisocyanates（Mainly two Isocyanates）React and synthesize with polyol, repeated in molecular structure containing substantial amounts of carbamate (- NHCOO-) Unit, is a kind of high polymer material big with abrasion-resistant, corrosion-resistant, low-temperature flexibility, bonding strength.Therefore, polyurethane anticorrosion Coating is also widely used in the fields such as building, automobile.
Although anti-corrosion polyurethane coating is respectively provided with the advantage of uniqueness in terms of anticorrosion, with the development of society, mesh The preceding performance requirement to coating also more and more higher, the field such as in order to meet current automobile, ship, plant equipment is filled to surface Increasingly strict high-weatherability requirement is adornd, high-weatherability will be had by being also accomplished by anti-corrosion polyurethane coating；Simultaneously in some salinity Under higher environment, the salt fog resistance to coating also can extra demand.
Therefore, for expanding economy, it is necessary to develop a kind of polyurethane with good salt spray resistance and weatherability Anticorrosive paint.
The content of the invention
Goal of the invention：The invention aims to solve the deficiencies in the prior art there is provided a kind of with good salt tolerant The anti-corrosion polyurethane coating of mist and weatherability.
Technical scheme：In order to realize the above object the present invention uses following technical scheme.
A kind of anti-corrosion polyurethane coating, by weight ratio including following component：
Waterborne polyurethane resin：90-100 parts；
Acrylic dispersion：10-15 parts；
CPVC：10-15 parts；Isocyanate curing agent：3-5 parts；
Paraffin：3-5 parts；
Chlorinated rubber：5-15 parts；
Silica dioxide gel：3-5 parts；
Propane diols：2-3 parts；
Nano titanium oxide：0.8-1.2 parts；
Polyetheretherketonefiber fiber：1-2 parts；
Water：10-15 parts；
Ethanol：10-15 parts；
Tripolyphosphate：2-3 parts；
Trbasic zinc phosphate：2-3 parts；
Zinc oxide：2-3 parts；
Dispersant：0.5-1 parts；
Defoamer：0.5-1 parts；
Levelling agent：0.5-1 parts；
Plasticizer：0.5-1 parts；
Thickener：0.5-1 parts；
Coupling agent：0.5-1 parts；
Anti- flash rusting agent：1-2 parts；
The acrylic dispersion includes following component by weight ratio：
Hydroxyethyl methacrylate：20-25 parts；
Methyl methacrylate：15-25 parts；
Butyl acrylate：5-15 parts；
Acrylic acid：3-5 parts；
Isobornyl methacrylate：5-10 parts；
Benzoyl peroxide：1-2 parts；
Tertiary carbonic acid glycidyl ester：10-15 parts；
N, N- dimethylethanolamine：3-5 parts；
Weight ratio is 1:1:1 dipropylene, propandiol butyl ether, propylene glycol monomethyl ether mixed solvent：45-55 parts.
The acrylic dispersion is prepared by following methods：Required raw material is weighed according to weight proportion, by methyl-prop Olefin(e) acid hydroxyl ethyl ester, methyl methacrylate, butyl acrylate, acrylic acid, isobornyl methacrylate, benzoyl peroxide are mixed Close uniform, obtain mixture A；Tertiary carbonic acid glycidyl ester and mixed solvent are stirred into 15-35min at 140-150 DEG C, make to mix Close uniform, then add mixture A, insulated and stirred 2h, be then cooled to 80 DEG C, be eventually adding N, N- dimethylethanolamines are stirred Mix to be well mixed and produce the acrylic dispersion.
The silica dioxide gel is prepared by following methods：By tetraethyl orthosilicate, absolute ethyl alcohol and water according to mol ratio For 1:6:4 ratio stirs 15-35min at 45-55 DEG C, the mixed solution stirred, then adds 0. 1 mol The pH value of/L hydrochloric acid regulation mixed solution after insulation reaction 2-4 h, adds 0. 1 mol/L ammoniacal liquor, by solution to 3-4 The pH value of system is adjusted to 7-8, continues insulated and stirred 15-35min, you can described silica dioxide gel is made.
The isocyanate curing agent is Bayer Bitterfeld GmbH waterborne curing agent Bayhydur 3100.
The dispersant is dispersant B YK191（Bi Ke chemistry）；The defoamer is defoamer BYK-012 or BYK-015 (Bi Ke chemistry)；The levelling agent is levelling agent LA50 (U.S. OMG)；The anti-flash rusting agent is anti-flash rusting agent FA179（Hai Mingsi ˙ morals are modest）.
The plasticizer is epoxidized soybean oil.
The thickener is methyl hydroxyethylcellulose.
The coupling agent is the tert-butyl peroxide silane of vinyl three.
The preparation method of the anti-corrosion polyurethane coating is specific as follows：
Weigh required raw material according to weight proportion, in the mixed solution that water and ethanol are constituted, by remaining ingredient stock dispersion in In the mixed solution of water and ethanol, be stirred at room temperature 2-3 hours, make each component be uniformly mixed can be prepared by the polyurethane prevent Rotten coating.
The waterborne polyurethane resin used in the present invention selects commercially available waterborne polyurethane resin, and such as Shanghai hundred is write from memory The PU-8510 waterborne polyurethane resins that Chemical Industry Science Co., Ltd sells.
Beneficial effect：Compared with prior art, the present invention has following conspicuousness beneficial effect：
The coating of the present invention has an excellent corrosion-resisting function, salt water resistance, salt fog good, and coating is soaked in into salinity at 50 DEG C is In 4% salt solution and salt fog after 1000h, without bubbling, get rusty, obscission, and the hardness and adhesive force of coating is basically unchanged, Remain in that good performance；And the coating of the present invention has a high-weatherability, coating after 2000 h ultraviolet irradiations, Without bubbling, peel off, ftracture, phenomenon of getting rusty, salt water resistance, salt air corrosion performance do not decline substantially, the glossiness of coating substantially without Change, and the hardness and adhesive force of coating are basically unchanged, and remain in that good performance；Resistance to acids and bases is good, and coating is at 25 DEG C 0.1 mol/L NaOH and 0.1 mol/L H2SO4Without foaming, corrugation, metachromatism after middle 48h；The coating of the present invention, safety Environmental protection, good penetrability can be integrated with base material bolt consolidation, further enhance the protection to base material；Surface tensile strength/ MPa is higher than 50, with excellent abrasion and impact resistance；And the coating of the present invention, its preparation method is simple, easily operation, Mild condition, is more suitable for industrialized production, with promotional value.
Embodiment
Technical solution of the present invention is described in further detail and completely with reference to embodiment.
A kind of anti-corrosion polyurethane coating of embodiment 1, by weight ratio including following component：
Waterborne polyurethane resin：90 parts；
Acrylic dispersion：10 parts；
CPVC：10 parts；Isocyanate curing agent Bayhydur 3100：3 parts；
Paraffin：3 parts；
Chlorinated rubber：5 parts；Silica dioxide gel：3 parts；
Propane diols：2 parts；
Nano titanium oxide：0.8 part；
Polyetheretherketonefiber fiber：1 part；
Water：10 parts；
Ethanol：10 parts；Tripolyphosphate：2 parts；
Trbasic zinc phosphate：2 parts；
Zinc oxide：2 parts；
Dispersant B YK191：0.5 part；
Defoamer BYK-012：0.5 part；
Levelling agent LA50：0.5 part；
Plasticizer：Epoxidized soybean oil：0.5 part；
Thickener：Methyl hydroxyethylcellulose：0.5 part；
Coupling agent：The tert-butyl peroxide silane of vinyl three：0.5 part；
Anti- flash rusting agent FA179：1 part；
The acrylic dispersion includes following component by weight ratio：
Hydroxyethyl methacrylate：20 parts；
Methyl methacrylate：15 parts；
Butyl acrylate：5 parts；
Acrylic acid：3 parts；
Isobornyl methacrylate：5 parts；
Benzoyl peroxide：1 part；
Tertiary carbonic acid glycidyl ester：10 parts；
N, N- dimethylethanolamine：3 parts；
Weight ratio is 1:1:1 dipropylene, propandiol butyl ether, propylene glycol monomethyl ether mixed solvent：45 parts.
Embodiment 2
A kind of anti-corrosion polyurethane coating, by weight ratio including following component：
Waterborne polyurethane resin：95 parts；
Acrylic dispersion：13 parts；
CPVC：13 parts；Isocyanate curing agent Bayhydur 3100：4 parts；
Paraffin：4 parts；
Chlorinated rubber：10 parts；
Silica dioxide gel：4 parts；
Propane diols：2.5 part；
Nano titanium oxide：1 part；
Polyetheretherketonefiber fiber：1.5 part；
Water：12 parts；
Ethanol：13 parts；
Tripolyphosphate：2.5 part；
Trbasic zinc phosphate：2.5 part；
Zinc oxide：2.5 part；
Dispersant B YK191：0.8 part；
Defoamer BYK-015：0.8 part；
Levelling agent LA50：0.8 part；
Plasticizer：Epoxidized soybean oil：0.8 part；
Thickener：Methyl hydroxyethylcellulose：0.8 part；
Coupling agent：The tert-butyl peroxide silane of vinyl three：0.8 part；
Anti- flash rusting agent FA179：1.5 part；
The acrylic dispersion includes following component by weight ratio：
Hydroxyethyl methacrylate：22.5 parts；
Methyl methacrylate：20 parts；
Butyl acrylate：10 parts；
Acrylic acid：4 parts；
Isobornyl methacrylate：7.5 part；
Benzoyl peroxide：1.5 part；
Tertiary carbonic acid glycidyl ester：12.5 parts；
N, N- dimethylethanolamine：4 parts；
Weight ratio is 1:1:1 dipropylene, propandiol butyl ether, propylene glycol monomethyl ether mixed solvent：50 parts.
Embodiment 3
A kind of anti-corrosion polyurethane coating, by weight ratio including following component：
Waterborne polyurethane resin：100 parts；
Acrylic dispersion：15 parts；
CPVC：15 parts；Isocyanate curing agent Bayhydur 3100：5 parts；
Paraffin：5 parts；
Chlorinated rubber：15 parts；
Silica dioxide gel：5 parts；
Propane diols：3 parts；
Nano titanium oxide：1.2 part；
Polyetheretherketonefiber fiber：2 parts；
Water：15 parts；
Ethanol：15 parts；
Tripolyphosphate：3 parts；
Trbasic zinc phosphate：3 parts；
Zinc oxide：3 parts；
Dispersant B YK191：1 part；
Defoamer BYK-015：1 part；
Levelling agent LA50：1 part；
Plasticizer：Epoxidized soybean oil：1 part；
Thickener：Methyl hydroxyethylcellulose：1 part；
Coupling agent：The tert-butyl peroxide silane of vinyl three：1 part；
Anti- flash rusting agent FA179：2 parts；
The acrylic dispersion includes following component by weight ratio：
Hydroxyethyl methacrylate：25 parts；
Methyl methacrylate：25 parts；
Butyl acrylate：15 parts；
Acrylic acid：5 parts；
Isobornyl methacrylate：10 parts；
Benzoyl peroxide：2 parts；
Tertiary carbonic acid glycidyl ester：15 parts；
N, N- dimethylethanolamine：5 parts；
Weight ratio is 1:1:1 dipropylene, propandiol butyl ether, propylene glycol monomethyl ether mixed solvent：55 parts.
Acrylic dispersion in above-described embodiment is prepared by following methods：Required original is weighed according to weight proportion Material, by hydroxyethyl methacrylate, methyl methacrylate, butyl acrylate, acrylic acid, isobornyl methacrylate, mistake BP is well mixed, and obtains mixture A；Tertiary carbonic acid glycidyl ester and mixed solvent are stirred at 145 DEG C 25min, makes to be well mixed, and then adds mixture A, insulated and stirred 2h, is then cooled to 80 DEG C, is eventually adding N, N- dimethyl Monoethanolamine, is uniformly mixed and produces the acrylic dispersion.
Silica dioxide gel in above-described embodiment, is to be prepared via a method which and obtain：
The silica dioxide gel is prepared by following methods：By tetraethyl orthosilicate, absolute ethyl alcohol and water according to mol ratio be 1: 6:4 ratio stirs 25min at 50 DEG C, the mixed solution stirred, then adds 0. 1 mol/L hydrochloric acid The pH value of mixed solution is adjusted to 3-4, after the h of insulation reaction 3,0. 1 mol/L ammoniacal liquor is added, by the pH value of solution system Regulation continues insulated and stirred 25min to 7-8, you can described silica dioxide gel is made.
The preparation method of the above embodiment of the present invention heat insulating coatings is specific as follows：
Weigh required raw material according to weight proportion, in the mixed solution that water and ethanol are constituted, by remaining ingredient stock dispersion in In the mixed solution of water and ethanol, it is stirred at room temperature 2-3 hours, is uniformly mixed each component and can be prepared by the heat-insulation and heat-preservation Coating.
The application method of coating prepared by above-described embodiment is as follows：
It is first that the surface cleaning for testing base material is clean, remove the impurity such as surface dirt；Then coating is poured into and one is carried out in spray gun Secondary spraying operation：During spraying, gun slot at the uniform velocity moves spray gun perpendicular to substrate surface, makes substrate surface film forming uniform, spraying away from From about 150-200mm, spray pressure is set as 0.2-0.3MPa, while spraying is brushed with same direction, to avoid producing brush Trace；Substrate surface can be according to experiment demand selection spraying number of times, if necessary to repeatedly spraying, then after once spraying terminates extremely 1h is waited less, makes to be completely dried film forming, then carries out secondary spraying, and in order to ensure effect, first of brushing thickness can be 0.15mm（Dry film）, second brushing thickness can be 0.1mm（Dry film）.
Performance test is carried out to coating, experimental result is shown：
The anticorrosive paint of the present invention has good salt water resistance and salt fog：It is 4% that coating sample is soaked in into salinity at 50 DEG C In salt solution and salt fog after 1000h, without bubbling, get rusty, obscission, and the hardness and adhesive force of coating is basically unchanged, still Keep good performance；
With high-weatherability：Coating sample is placed on accelerated ageing in XR-UV ultraviolet ageing casees, ultraviolet wavelength 280- 315 Nm, the μ W/cm of irradiation level 3002, the h of time 2000；Coating sample without bubbling, is peeled off, opened after 2000 h ultraviolet irradiations Split, phenomenon of getting rusty, salt water resistance, salt air corrosion performance do not decline substantially, the glossiness of coating is substantially unchanged, and coating Hardness and adhesive force are basically unchanged, and remain in that good performance；
With good resistance to acids and bases：0.1 mol/L NaOH and 0.1 mol/L H of the coating at 25 DEG C2SO4Nothing rises after middle 48h Bubble, corrugation, metachromatism；
In addition, the coating of the present invention, safety and environmental protection, good penetrability, can be integrated with base material bolt consolidation, further enhance to base The protection of material；Surface tensile strength/MPa is higher than 50, with excellent abrasion and impact resistance.
As fully visible, anticorrosive coating of the invention has high salt water resistance, salt fog and weatherability, and overall performance is excellent, With promotional value.
Finally need it is pointed out here that be：It the above is only the part preferred embodiment of the present invention, it is impossible to be interpreted as to this hair The limitation of bright protection domain, those skilled in the art according to the present invention the above make some it is nonessential improvement and Adjustment
Belong to protection scope of the present invention.

Claims (6)

1. a kind of anti-corrosion polyurethane coating, it is characterised in that：Include following component by weight ratio：
Waterborne polyurethane resin：90-100 parts；
Acrylic dispersion：10-15 parts；
CPVC：10-15 parts；
Isocyanate curing agent：3-5 parts；
Paraffin：3-5 parts；
Chlorinated rubber：5-15 parts；
Silica dioxide gel：3-5 parts；
Propane diols：2-3 parts；
Nano titanium oxide：0.8-1.2 parts；
Polyetheretherketonefiber fiber：1-2 parts；
Water：10-15 parts；
Ethanol：10-15 parts；
Tripolyphosphate：2-3 parts；
Trbasic zinc phosphate：2-3 parts；
Zinc oxide：2-3 parts；
Dispersant：0.5-1 parts；
Defoamer：0.5-1 parts；
Levelling agent：0.5-1 parts；
Plasticizer：0.5-1 parts；
Thickener：0.5-1 parts；
Coupling agent：0.5-1 parts；
Anti- flash rusting agent：1-2 parts；
The acrylic dispersion includes following component by weight ratio：
Hydroxyethyl methacrylate：20-25 parts；
Methyl methacrylate：15-25 parts；
Butyl acrylate：5-15 parts；
Acrylic acid：3-5 parts；
Isobornyl methacrylate：5-10 parts；
Benzoyl peroxide：1-2 parts；
Tertiary carbonic acid glycidyl ester：10-15 parts；
N, N- dimethylethanolamine：3-5 parts；
Weight ratio is 1:1:1 dipropylene, propandiol butyl ether, propylene glycol monomethyl ether mixed solvent：45-55 parts.
2. anti-corrosion polyurethane coating according to claim 1, it is characterised in that：The acrylic dispersion is by following It is prepared by method：Required raw material is weighed according to weight proportion, by hydroxyethyl methacrylate, methyl methacrylate, acrylic acid fourth Ester, acrylic acid, isobornyl methacrylate, benzoyl peroxide are well mixed, and obtain mixture A；Versatic acid is shunk sweet Grease and mixed solvent stir 15-35min at 140-150 DEG C, make to be well mixed, and then add mixture A, insulated and stirred 2h, is then cooled to 80 DEG C, is eventually adding N, N- dimethylethanolamines, is uniformly mixed and produces the acrylic resin and disperse Body.
3. anti-corrosion polyurethane coating according to claim 1, it is characterised in that：The silica dioxide gel is by following methods Prepare：By tetraethyl orthosilicate, absolute ethyl alcohol and water according to mol ratio be 1:6:4 ratio stirs 15- at 45-55 DEG C Then 35min, the mixed solution stirred adds the 0. 1 mol/L pH value of hydrochloric acid regulation mixed solution to 3- After 4, insulation reaction 2-4 h, 0. 1 mol/L ammoniacal liquor is added, the pH value of solution system is adjusted to 7-8, continues insulation and stirs Mix 15-35min, you can described silica dioxide gel is made.
4. anti-corrosion polyurethane coating according to claim 1, it is characterised in that：The dispersant is dispersant B YK191； The defoamer is defoamer BYK-012 or BYK-015；The levelling agent is levelling agent LA50, and the anti-flash rusting agent is dodged to be anti- Become rusty agent FA179.
5. anti-corrosion polyurethane coating according to claim 1, it is characterised in that：The plasticizer is epoxidized soybean oil；Institute Thickener is stated for methyl hydroxyethylcellulose；The coupling agent is the tert-butyl peroxide silane of vinyl three.
6. anti-corrosion polyurethane coating according to claim 1, it is characterised in that：The preparation method of the heat insulating coatings It is specific as follows：
Weigh required raw material according to weight proportion, in the mixed solution that water and ethanol are constituted, by remaining ingredient stock dispersion in In the mixed solution of water and ethanol, it is stirred at room temperature 2-3 hours, is uniformly mixed each component and can be prepared by the heat-insulation and heat-preservation Coating.
CN201710327904.9A 2017-05-11 2017-05-11 A kind of anti-corrosion polyurethane coating Withdrawn CN107043590A (en)

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CN107880655A (en) * 2017-12-27 2018-04-06 许诗瑶 A kind of preparation method of anticorrosion paint
CN108017988A (en) * 2017-12-06 2018-05-11 苏州铂邦胶业有限公司 The water paint of good weatherability

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