CN105670457A - Water-based paint coated on metal surface - Google Patents

Abstract

The invention relates to water-based paint coated on a metal surface. The water-based paint is prepared from, by weight, 15-60 parts of water-based resin, 0.1-5 parts of neutralizing agent, 0.1-10 parts of dispersing agent, 0.01-5 parts of anti-foaming agent, 10-30 parts of extender pigment, 1-10 parts of coloring pigment, 1-10 parts of anti-rust pigment, 0.1-5 parts of thickening agent, 0.1-5 parts of base material wetting agent, 25-40 parts of deionized water solvent, 5-8 parts of ethylene bis-stearamide, 10-12 parts of bauxite, 5-8 parts of silicone acrylic emulsion, 2-4 parts of surface control agent, 0-2 parts of ph controlling agent and 0.1-5 parts of other auxiliaries, wherein the water-based resin adopts water-based alkyd resin or water-based epoxy ester resin or water-based acrylic resin or water-based phosphate ester resin. The water-based paint does not contain organic solvent and is resistant to corrosion, excellent in impact resistance and friendly to environment.

Description

It is coated on the water paint of metal surface

Technical field

The present invention relates to water paint field, particularly relate to a kind of water paint being coated on metal surface.

Background technology

Existing coating (or paint) refers to and is coated onto body surface energy drying and forming-film, makes object attractive in appearance and is protected, or forming a class film forming matter of the film with specific function at body surface.

The coating variety that China produces is various, the oil paint that particularly coating of coating metal surface is all solvent with organic solvents such as dimethylbenzene, generally it is called paint, paint and producing and in use procedure, atmospheric pollution is extremely serious, general often use one ton paint is about 400-700 kilogram to the solvent of airborne release, even more. The very big pollution that environment is caused.

At present in a lot of fields, it it is automotive field, the demand of metallic paint need to be come more big, and the hazardous solvent that existing metallic paint all contains, this makes the health of shop personnel be subject to great damage. It addition, existing metallic paint is also not enough to some extent in pliability, to such an extent as to the slight strength scratching or staggering along, it is sufficient to make lacquer painting impaired, especially fragile.

In view of drawbacks described above, creator of the present invention obtains this creation finally through research for a long time and practice.

Summary of the invention

It is an object of the invention to provide a kind of water paint being coated on metal surface, in order to overcome above-mentioned technological deficiency.

For achieving the above object, the present invention provides a kind of water paint being coated on metal surface, and its composition is in weight percent is:

Water-base resin 15-60; Nertralizer 0.1-5; Dispersant 0.1-10; Defoamer 0.01-5; Extender pigment 10-30; Coloring pigment 1-10; Rust resisting pigment 1-10; Thickening agent 0.1-5; Substrate wetting agents 0.1-5; Deionized water solvent 25-40; The double; two hard amide 5-8 of hexenyl; Bauxite 10-12 part; Silicone acrylic emulsion 5-8 part; Surface control agent 2-4 part; Ph regulator 0-2; Other auxiliary agents 0.1-5;

Wherein, described water-base resin is the one in aqueous alkide resin, water-base epoxy ester resin, water-borne acrylic resin or aqueous phosphate ester resin;

The manufacture method of water paint is:

Step a, adds the water-base resin of aforementioned proportion, dispersant, defoamer, thickening agent mixing in dissolving tank, deionized water solvent is added dissolving tank, starts stirring, under the environment of temperature 30-40 DEG C, stir 30 minutes;

Step b, is uniformly divided into 3 parts by the solution in above-mentioned dissolving tank, and respectively the first solution, the second solution and the concentration of the 3rd solution each part solution, pH value, weight are all identical;

Step c, by the extender pigment of aforementioned proportion, coloring pigment, rust resisting pigment, substrate wetting agents, nertralizer, add in the first pre-emulsification still, add the first solution in above-mentioned steps b, under the environment of temperature 85 DEG C, mixing speed sets 300-500 rpm, stirs 20 minutes, obtains the first emulsion;

Step d, adds in the second pre-emulsification still by double; two for the hexenyl of aforementioned proportion hard amide, bauxite, adds the second solution in above-mentioned steps b, under the environment of temperature 120 DEG C, mixing speed sets 350-500 rpm, stirs 25 minutes, obtains the second emulsion;

Step e, adds in the 3rd pre-emulsification still by the silicone acrylic emulsion of aforementioned proportion, surface control agent, other auxiliary agents, adds the 3rd solution in above-mentioned steps b, under the environment of temperature 90 DEG C, mixing speed sets 400-500 rpm, stirs 15 minutes, obtains the 3rd emulsion;

Step f, distinguishes the pH value in the first emulsion in determination step c-d, the second emulsion, the 3rd emulsion, and carries out computing by controller, calculates the coincidence angle value operation result of pH value of three in default scope; If in this scope preset, then three parts of emulsions being mixed, 300-500 rev/min of dispersed with stirring 30 minutes, namely make Lycoperdon polymorphum Vitt water-base epoxy priming paint; If the coincidence angle value of the pH value of three is not in default scope, then by relatively low for pH value in three parts of emulsions middle addition pH value regulator, stirs, redeterminate pH value, and calculate registration threshold value; Until meeting threshold requirement, three parts of emulsions being mixed, 300-500 rev/min of dispersed with stirring 30 minutes, namely making Lycoperdon polymorphum Vitt water-base epoxy priming paint.

Further, a comparison module is set in described controller, gathers the voltage and current value that each PH detector gathers respectively; Its in all signal processing units storage electric current and voltage acquisition signal carry out calculation process;

Described comparison module calculates the 2nd PH detector according to the following equation and the oneth PH detector gathers the registration P of numerical value₂₁, in the present embodiment, adopt the electric current of PH detector collection and voltage signal to judge;

$P_{21}(u_1,i_1)=\frac{{\mathrm{\Σ}}_{u_2,i_2}\left(T\right(u_2,i_2)*I^{\′}(u_1+u_2,i_1+i_2\left)\right)}{\sqrt{{\mathrm{\Σ}}_{u_2,i_2}T{(u_2,i_2)}^2*{\mathrm{\Σ}}_{u_2,i_2}I{(u_1+u_2,i_1+i_2)}^2}}---\left(1\right)$

In formula, P₂₁(u₁, i₁) represent the registration often organizing electric current and voltage signal, u₁And i₁Represent the voltage signal of a PH detector collection, current signal, u respectively₂And i₂Representing the voltage signal of described 2nd PH detector collection, current signal respectively, T represents mean square deviation computing, and I and I ' represents integral operation.

Described comparison module calculates the 3rd PH detector according to the following equation and the oneth PH detector gathers the registration P of numerical value₃₁, in the present embodiment, adopt the detector electric current to gathering and voltage signal to judge;

$P_{31}(u_1,i_1)=\frac{{\mathrm{\Σ}}_{u_3,i_3}\left(T\right(u_3,i_3)*I^{\′}(u_1+u_3,i_1+i_3\left)\right)}{\sqrt{{\mathrm{\Σ}}_{u_3,i_3}T{(u_3,i_3)}^2*{\mathrm{\Σ}}_{u_3,i_3}I{(u_1+u_3,i_1+i_3)}^2}}---\left(2\right)$

In formula, P₃₁(u₁, i₁) represent the registration often organizing electric current and voltage signal, u₁And i₁Represent the voltage signal of a PH detector collection, current signal, u respectively₃And i₃Representing the voltage signal of described 2nd PH detector collection, current signal respectively, T represents mean square deviation computing, and I and I ' represents integral operation;

Described comparison module calculates the 2nd PH detector according to the following equation and the 3rd PH detector gathers the registration P of numerical value₂₃, in the present embodiment, adopt the detector electric current to gathering and voltage signal to judge;

$P_{23}(u_3,i_3)=\frac{{\mathrm{\Σ}}_{u_2,i_2}\left(T\right(u_2,i_2)*I^{\′}(u_3+u_2,i_3+i_2\left)\right)}{\sqrt{{\mathrm{\Σ}}_{u_2,i_2}T{(u_2,i_2)}^2*{\mathrm{\Σ}}_{u_2,i_2}I{(u_3+u_2,i_3+i_2)}^2}}---\left(3\right)$

In formula, P₂₃(u₃, i₃) represent the registration often organizing electric current and voltage signal, u₃And i₃Represent the voltage signal of a PH detector collection, current signal, u respectively₂And i₂Representing the voltage signal of described 2nd PH detector collection, current signal respectively, T represents mean square deviation computing, and I and I ' represents integral operation;

Described comparing unit calculates the 2nd PH detector signal registration P to a PH detector₂₁, the 3rd PH detector signal registration P to a PH detector₃₁, the 3rd PH detector signal registration P to the 2nd PH detector₃₂。

Above-mentioned three the registration threshold values recorded being averaged, finally overlapped angle value.

Further, described dispersant is YB-301, the byk-154 of 760w, 750w or BYK production of enlightening production, byk-154, byk-191.

Further, described defoamer is that TEG0 produces: the byk-020 that Foamex-810, Foamex-845 or BYK produce.

Further, described extender pigment is: blanc fixe, triple superphosphate, Pulvis Talci, Kaolin, aluminium-magnesium silicate, mica powder.

Further, described coloring pigment is: titanium dioxide, brown iron oxide, carbon powder, phthalocyanine blue, peacock blue, everbright fast yellow, chrome yellow, chrome vermillion, chrome red, zinc green, phthalein viridescent.

Further, described rust resisting pigment is: zinc phosphate, aluminium triphosphate, Yttrium trinitrate, strontium chromate.

Further, described thickening agent is: the alkali swollen thickener of ROHM AND HAAS production and polyurethane thickener, the OMG-0620 that RM-8w or OMG that ase-60, ROHM AND HAAS produce produces.

Further, described substrate wetting agents is: the yb-346 that BYK produces, the C1211 that the tego270 of enlightening height production, tego4100, the vertical LC-547 of prosperous Chemical Manufacture, BASF produce.

Further, other auxiliary agents are: the anti-FA-179 that agent is SERAD production that becomes rusty that dodges, the French CE-660B produced that first creates, sodium nitrite; Salt spray resistance agent is the Z6040 that DOW CORNING produces; Drier is that Borchers produces: the TROYMAX that OS-123/OS-421 or U.S. TROY produces^TM123。

The mechanism of action of this component: the coating that water-base resin prepares makes rust resisting pigment, the sedimentation velocity of other auxiliary agents is controlled significantly, moreover it is possible to auxiliary pigment aligns, pigment compression tends to arranged in parallel. The water solublity of resin along with in resin the increase of carboxyl-content and increase, when carboxylic content of monomer is 10%～12%, resin is critical water-soluble; But too high carboxyl-content causes the highly-water-soluble being not required to, film performance can be caused to decline, in water paint, it is often necessary to nertralizer carrys out the pH value of regulation system; The power of the volatility of nertralizer and alkalescence is critically important, and in general ammonia is not suitable for for neutralized aqueous resin, because ammonia volatilization is too fast on the one hand, system is unstable; On the other hand in ammonia and after resin the wettability of color stuffing is poor. Due to the fact that pH stability when considering high temperature storage, select nertralizer LC-951 as nertralizer, and keep the pH value of system about 8.

Compared with prior art the invention have the benefit that

Aqueous metallic paint provided by the present invention, without noxious volatile solvent, is conducive to the physical and mental health of environmental conservation and user. The pliability of aqueous metallic paint provided by the invention is extremely strong, under the effect being subject to external force, not easily impaired.

Water paint adhesive force provided by the invention is strong, and dispersive property is good, has good filming performance, not easy to crack, is practically free of volatile solvent in water paint, and during use, safety is high. The present invention provides a kind of water paint, has effectively saved the energy, and the water paint of the present invention is more more environmentally-friendly than traditional oil paint simultaneously, safety. The water paint of the present invention is nontoxic, and environmental pollution is little, without influence on the safety of packaging food, health; The enamelled coating formed after coating is tough and tensile, and brightness is high, and adhesive force is strong, and printing adaptability is wide, and follow-up printing processing characteristics is splendid.

Each raw material, in the process making water paint, is dissolved and controls respectively pH value by the present invention respectively, and before each emulsion mixes, controls pH value in threshold range, and water paint has coadapted reaction environment when mixing; Water paint finally has higher toughness.

Detailed description of the invention

Below in conjunction with, to the present invention, above-mentioned and other technical characteristic and advantage are described in more detail.

The water paint being applied to metal surface of the embodiment of the present invention, its composition is in weight percent is:

Water-base resin 15-60; Nertralizer 0.1-5; Dispersant 0.1-10; Defoamer 0.01-5; Extender pigment 10-30; Coloring pigment 1-10; Rust resisting pigment 1-10; Thickening agent 0.1-5; Substrate wetting agents 0.1-5; Deionized water solvent 25-40; The double; two hard amide 5-8 of hexenyl; Bauxite 10-12 part; Silicone acrylic emulsion 5-8 part; Surface control agent 2-4 part; Ph regulator 0-2; Other auxiliary agents 0.1-5;

Wherein, described water-base resin is aqueous alkide resin, water-base epoxy ester resin, water-borne acrylic resin or aqueous phosphate ester resin.

Described nertralizer is the LC-951 of vertical prosperous Chemical Manufacture, can be the mixture of one or more of organic amine.

Described dispersant is YB-301, the byk-154 of 760w, 750w or BYK production of enlightening production, byk-154, byk-191.

Described defoamer is that TEGO produces: the byk-020 that Foamex-810, Foamex-845 or BYK produce.

Described extender pigment is: blanc fixe, triple superphosphate, Pulvis Talci, Kaolin, aluminium-magnesium silicate, mica powder,

Described coloring pigment is: titanium dioxide, brown iron oxide, carbon powder, phthalocyanine blue, peacock blue, everbright fast yellow, chrome yellow, chrome vermillion, chrome red, zinc green, phthalein viridescent.

Described rust resisting pigment is: zinc phosphate, aluminium triphosphate, Yttrium trinitrate, strontium chromate,

Described thickening agent is: alkali swollen thickener and polyurethane thickener such as ase-60 (ROHM AND HAAS), RM-8w (ROHM AND HAAS), OMG-0620 (OMG).

Described substrate wetting agents is: the yb-346 that BYK produces, the C1211 that the tego270 of enlightening height production, tego4100, the vertical LC-547 of prosperous Chemical Manufacture, BASF produce.

Other auxiliary agents are: the anti-FA-179 that agent is SERAD production that becomes rusty that dodges, the French CE-660B produced that first creates, sodium nitrite; Salt spray resistance agent is the Z6040 that DOW CORNING produces; Drier is that Borchers produces: the TROYMAX that OS-123/OS-421, U.S. TROY produce^TM123。

Described deionized water is standard compliant deionized water.

The manufacture method of the water paint of the embodiment of the present invention is:

Step a, adds the water-base resin of aforementioned proportion, dispersant, defoamer, thickening agent mixing in dissolving tank, deionized water solvent is added dissolving tank, starts stirring, under the environment of temperature 30-40 DEG C, stir 30 minutes;

Step b, is uniformly divided into 3 parts by the solution in above-mentioned dissolving tank, and respectively the first solution, the second solution and the concentration of the 3rd solution each part solution, pH value, weight are all identical;

Step c, by the extender pigment of aforementioned proportion, coloring pigment, rust resisting pigment, substrate wetting agents, nertralizer, add in the first pre-emulsification still, add the first solution in above-mentioned steps b, under the environment of temperature 85 DEG C, mixing speed sets 300-500 rpm, stirs 20 minutes, obtains the first emulsion;

Step d, adds in the second pre-emulsification still by double; two for the hexenyl of aforementioned proportion hard amide, bauxite, adds the second solution in above-mentioned steps b, under the environment of temperature 120 DEG C, mixing speed sets 350-500 rpm, stirs 25 minutes, obtains the second emulsion;

Step e, adds in the 3rd pre-emulsification still by the silicone acrylic emulsion of aforementioned proportion, surface control agent, other auxiliary agents, adds the 3rd solution in above-mentioned steps b, under the environment of temperature 90 DEG C, mixing speed sets 400-500 rpm, stirs 15 minutes, obtains the 3rd emulsion;

Step f, distinguishes the pH value in the first emulsion in determination step c-d, the second emulsion, the 3rd emulsion, and carries out computing by control unit, calculates the coincidence angle value operation result of pH value of three in default scope; If in this scope preset, then three parts of emulsions being mixed, 300-500 rev/min of dispersed with stirring 30 minutes, namely make Lycoperdon polymorphum Vitt water-base epoxy priming paint; If the coincidence angle value of the pH value of three is not in default scope, then by relatively low for pH value in three parts of emulsions middle addition pH value regulator, stirs, redeterminate pH value, and calculate registration threshold value; Until meeting threshold requirement, three parts of emulsions being mixed, 300-500 rev/min of dispersed with stirring 30 minutes, namely making Lycoperdon polymorphum Vitt water-base epoxy priming paint.

In above-mentioned steps f, being respectively provided with PH detector in each pre-emulsification still, the data gathered are transmitted to controller by PH detector, a PH detector respectively PH detector, the second temperature PH detector and the 3rd PH detector;

One comparison module is set in described controller, gathers the voltage and current value that each PH detector gathers respectively; Its in all signal processing units storage electric current and voltage acquisition signal carry out calculation process;

Described comparison module calculates the 2nd PH detector according to the following equation and the oneth PH detector gathers the registration P of numerical value₂₁, in the present embodiment, adopt the electric current of PH detector collection and voltage signal to judge;

$P_{21}(u_1,i_1)=\frac{{\mathrm{\Σ}}_{u_2,i_2}\left(T\right(u_2,i_2)*I^{\′}(u_1+u_2,i_1+i_2\left)\right)}{\sqrt{{\mathrm{\Σ}}_{u_2,i_2}T{(u_2,i_2)}^2*{\mathrm{\Σ}}_{u_2,i_2}I{(u_1+u_2,i_1+i_2)}^2}}---\left(1\right)$

In formula, P₂₁(u₁, i₁) represent the registration often organizing electric current and voltage signal, u₁And i₁Represent the voltage signal of a PH detector collection, current signal, u respectively₂And i₂Representing the voltage signal of described 2nd PH detector collection, current signal respectively, T represents mean square deviation computing, and I and I ' represents integral operation.

Described comparison module calculates the 3rd PH detector according to the following equation and the oneth PH detector gathers the registration P of numerical value₃₁, in the present embodiment, adopt the detector electric current to gathering and voltage signal to judge;

$P_{31}(u_1,i_1)=\frac{{\mathrm{\Σ}}_{u_3,i_3}\left(T\right(u_3,i_3)*I^{\′}(u_1+u_3,i_1+i_3\left)\right)}{\sqrt{{\mathrm{\Σ}}_{u_3,i_3}T{(u_3,i_3)}^2*{\mathrm{\Σ}}_{u_3,i_3}I{(u_1+u_3,i_1+i_3)}^2}}---\left(2\right)$

In formula, P₃₁(u₁, i₁) represent the registration often organizing electric current and voltage signal, u₁And i₁Represent the voltage signal of a PH detector collection, current signal, u respectively₃And i₃Representing the voltage signal of described 2nd PH detector collection, current signal respectively, T represents mean square deviation computing, and I and I ' represents integral operation;

Described comparison module calculates the 2nd PH detector according to the following equation and the 3rd PH detector gathers the registration P of numerical value₂₃, in the present embodiment, adopt the detector electric current to gathering and voltage signal to judge;

$P_{23}(u_3,i_3)=\frac{{\mathrm{\Σ}}_{u_2,i_2}\left(T\right(u_2,i_2)*I^{\′}(u_3+u_2,i_3+i_2\left)\right)}{\sqrt{{\mathrm{\Σ}}_{u_2,i_2}T{(u_2,i_2)}^2*{\mathrm{\Σ}}_{u_2,i_2}I{(u_3+u_2,i_3+i_2)}^2}}---\left(3\right)$

In formula, P₂₃(u₃, i₃) represent the registration often organizing electric current and voltage signal, u₃And i₃Represent the voltage signal of a PH detector collection, current signal, u respectively₂And i₂Representing the voltage signal of described 2nd PH detector collection, current signal respectively, T represents mean square deviation computing, and I and I ' represents integral operation;

Described comparing unit calculates the 2nd PH detector signal registration P to a PH detector₂₁, the 3rd PH detector signal registration P to a PH detector₃₁, the 3rd PH detector signal registration P to the 2nd PH detector₃₂。

Above-mentioned three the registration threshold values recorded being averaged, finally overlapped angle value; Also including data storage in the controller, it obtains registration threshold value from data storage, the coincidence angle value of described calculating gained and registration threshold value is compared, if described coincidence angle value is more than threshold value, then degree of concluding exceeds threshold range; If in this threshold range, then without departing from, by three solution mix.

By the examples below the composition of above-mentioned various water paints is described.

Embodiment one

466 grams of deionized waters are added dispersion tank, starts stirring, add aqueous epoxy resins 176 grams, 760w3.59 gram, 810 defoamer 0.9 gram, ase-602.97 gram, stirring, operate according to above-mentioned steps a-b;

Deposited barium sulphate 277 grams, titanium dioxide 51 grams, zinc phosphate 12 grams, LC-951 nertralizer 8.27 grams, OMG-06204.04 gram, LR97250.98 gram; Mixing, operates according to above-mentioned steps c;

Take the double; two hard amide 12g of hexenyl; Bauxite 5g; Mixing, operates according to above-mentioned steps d;

White carbon black 8.5 grams, sodium nitrite 2.85 grams, surface control agent 6g; Operate according to above-mentioned steps e-f.

Embodiment two

366.2 grams of deionized waters are added dispersion tank, starts stirring, add aqueous alkide resin 300 grams; 810 defoamer 0.03 gram; 760w3.9 gram,

Deposited barium sulphate 160 grams, iron oxide red 100 grams, Pulvis Talci 50 grams, bentonite 10 sodium nitrite 2.8 grams, LC-951 nertralizer 4.5 grams, gel0620 thickening agent 2.75 grams;

Being subsequently adding RM-8w thickening agent 3.1 grams, other raw materials are identical with above-described embodiment one, and operation is ibid.

Embodiment three

135 grams of deionized waters are added dispersion tanks, starts stirring, add aqueous alkide resin 600 grams, LC-951 nertralizer 7.5 grams, 760w4 gram, 810 defoamer 0.1 gram, LC-547 wetting agent 1 gram;

Blanc fixe 50 grams, titanium dioxide 20 grams, red (3132) 80 grams, zinc phosphate 20 grams, sodium nitrite 2.5 grams;

Add RM-8w thickening agent 4.5 grams, gel0620 thickening agent 5 grams;

Other raw materials are identical with above-described embodiment one, and operation is ibid.

Embodiment four

265 grams of deionized waters are added dispersion tank, starts stirring, add aqueous epoxy resins 206 grams, OS-123 drier 12.5 grams; LC-951 nertralizer 10.2 grams, 760w2.5 gram, 810 defoamer 0.1 gram;

Blanc fixe 165 grams, titanium dioxide 82.3 white carbon black 9 grams, zinc phosphate 8.5 grams, ase-60 thickening agent 2.1 grams, gel0620 thickening agent 4.3 grams.

Other raw materials are identical with above-described embodiment one, and operation is ibid.

Performance test parameter such as table 1 of the present invention:

Table 1 various embodiments of the present invention test performance

	Embodiment 1	Embodiment 2	Embodiment 3	Embodiment 4
					Adhesive force	1 grade	1 grade	1 grade	1 grade
Surface drying time (room temperature) min	5-8	6-9	4-8	4-12
					Acid resistance	168h is without difference	168h is without difference	168h is without difference	168h is without difference
Alkali resistance	168h is without difference	168h is without difference	168h is without difference	168h is without difference
					Operating temperature range	-12 DEG C and more than	-14 DEG C and more than	-10 DEG C and more than	-10 DEG C and more than
Artificial ageing resistance	0 grade	0 grade	0 grade	0 grade
					Elastic modelling quantity	0.33MPa	0.35MPa	0.32MPa	0.34MPa
Comprehensive pliability grade	1 grade	1 grade	1 grade	1 grade

The coating that water-base resin prepares makes rust resisting pigment, the sedimentation velocity of other auxiliary agents is controlled significantly, moreover it is possible to auxiliary pigment aligns, and pigment compression tends to arranged in parallel. The water solublity of resin along with in resin the increase of carboxyl-content and increase, when carboxylic content of monomer is 10%～12%, resin is critical water-soluble; But too high carboxyl-content causes the highly-water-soluble being not required to, film performance can be caused to decline. In water paint, it is often necessary to nertralizer carrys out the pH value of regulation system. The power of the volatility of nertralizer and alkalescence is critically important, and in general ammonia is not suitable for for neutralized aqueous resin, because ammonia volatilization is too fast on the one hand, system is unstable; On the other hand in ammonia and after resin the wettability of color stuffing is poor. Due to the fact that pH stability when considering high temperature storage, select nertralizer LC-951 as nertralizer, and keep the pH value of system about 8.

Above-mentioned detailed description is illustrating for one of them possible embodiments of the present invention, and this embodiment is also not used to limit the scope of the claims of the present invention, and all equivalences done without departing from the present invention are implemented or change, and are intended to be limited solely by the scope of technical solution of the present invention.

Claims (10)

1. the water paint being coated on metal surface, it is characterised in that its composition is in weight percent is:

Water-base resin 15-60; Nertralizer 0.1-5; Dispersant 0.1-10; Defoamer 0.01-5; Extender pigment 10-30; Coloring pigment 1-10; Rust resisting pigment 1-10; Thickening agent 0.1-5; Substrate wetting agents 0.1-5; Deionized water solvent 25-40; The double; two hard amide 5-8 of hexenyl; Bauxite 10-12 part; Silicone acrylic emulsion 5-8 part; Surface control agent 2-4 part; Ph regulator 0-2; Other auxiliary agents 0.1-5;

Wherein, described water-base resin is the one in aqueous alkide resin, water-base epoxy ester resin, water-borne acrylic resin or aqueous phosphate ester resin;

The manufacture method of water paint is:

Step a, adds the water-base resin of aforementioned proportion, dispersant, defoamer, thickening agent mixing in dissolving tank, deionized water solvent is added dissolving tank, starts stirring, under the environment of temperature 30-40 DEG C, stir 30 minutes;

Step b, is uniformly divided into 3 parts by the solution in above-mentioned dissolving tank, and respectively the first solution, the second solution and the concentration of the 3rd solution each part solution, pH value, weight are all identical;

Step c, by the extender pigment of aforementioned proportion, coloring pigment, rust resisting pigment, substrate wetting agents, nertralizer, add in the first pre-emulsification still, add the first solution in above-mentioned steps b, under the environment of temperature 85 DEG C, mixing speed sets 300-500 rpm, stirs 20 minutes, obtains the first emulsion;

Step d, adds in the second pre-emulsification still by double; two for the hexenyl of aforementioned proportion hard amide, bauxite, adds the second solution in above-mentioned steps b, under the environment of temperature 120 DEG C, mixing speed sets 350-500 rpm, stirs 25 minutes, obtains the second emulsion;

Step e, adds in the 3rd pre-emulsification still by the silicone acrylic emulsion of aforementioned proportion, surface control agent, other auxiliary agents, adds the 3rd solution in above-mentioned steps b, under the environment of temperature 90 DEG C, mixing speed sets 400-500 rpm, stirs 15 minutes, obtains the 3rd emulsion;

Step f, distinguishes the pH value in the first emulsion in determination step c-d, the second emulsion, the 3rd emulsion, and carries out computing by controller, calculates the coincidence angle value operation result of pH value of three in default scope; If in this scope preset, then three parts of emulsions being mixed, 300-500 rev/min of dispersed with stirring 30 minutes, namely make Lycoperdon polymorphum Vitt water-base epoxy priming paint; If the coincidence angle value of the pH value of three is not in default scope, then by relatively low for pH value in three parts of emulsions middle addition pH value regulator, stirs, redeterminate pH value, and calculate registration threshold value; Until meeting threshold requirement, three parts of emulsions being mixed, 300-500 rev/min of dispersed with stirring 30 minutes, namely making Lycoperdon polymorphum Vitt water-base epoxy priming paint.

2. the water paint being coated on metal surface according to claim 1, it is characterised in that arrange a comparison module in described controller, gathers the voltage and current value that each PH detector gathers respectively; Its in all signal processing units storage electric current and voltage acquisition signal carry out calculation process;

Described comparison module calculates the 2nd PH detector according to the following equation and the oneth PH detector gathers the registration P of numerical value₂₁, in the present embodiment, adopt the electric current of PH detector collection and voltage signal to judge;

$P_{21}\left(u_1,i_1\right)=\frac{{\Σ}_{u_2,i_2}\left(T\left(u_2,i_2\right)*I^{\′}\left(u_1+u_2,i_1+i_2\right)\right)}{\sqrt{{\Σ}_{u_2,i_2}T{\left(u_2,i_2\right)}^2*{\Σ}_{u_2,i_2}I{\left(u_1+u_2,i_1+i_2\right)}^2}}---\left(1\right)$

In formula, P₂₁(u₁, i₁) represent the registration often organizing electric current and voltage signal, u₁And i₁Represent the voltage signal of a PH detector collection, current signal, u respectively₂And i₂Representing the voltage signal of described 2nd PH detector collection, current signal respectively, T represents mean square deviation computing, and I and I ' represents integral operation.

Described comparison module calculates the 3rd PH detector according to the following equation and the oneth PH detector gathers the registration P of numerical value₃₁, in the present embodiment, adopt the detector electric current to gathering and voltage signal to judge;

$P_{31}(u_1,i_1)=\frac{{\mathrm{\Σ}}_{u_3,i_3}(T(u_3,i_3)*I^{\′}(u_1+u_3,i_1+i_3))}{\sqrt{{\mathrm{\Σ}}_{u_3,i_3}T{(u_3,i_3)}^2*{\mathrm{\Σ}}_{u_3,i_3}I{(u_1+u_3,i_1+i_3)}^2}}---\left(2\right)$

In formula, P₃₁(u₁, i₁) represent the registration often organizing electric current and voltage signal, u₁And i₁Represent the voltage signal of a PH detector collection, current signal, u respectively₃And i₃Representing the voltage signal of described 2nd PH detector collection, current signal respectively, T represents mean square deviation computing, and I and I ' represents integral operation;

Described comparison module calculates the 2nd PH detector according to the following equation and the 3rd PH detector gathers the registration P of numerical value₂₃, in the present embodiment, adopt the detector electric current to gathering and voltage signal to judge;

$P_{23}(u_3,i_3)=\frac{{\mathrm{\Σ}}_{u_2,i_2}\left(T\right(u_2,i_2)*I^{\′}(u_3+u_2,i_3+i_2\left)\right)}{\sqrt{{\mathrm{\Σ}}_{u_2,i_2}T{(u_2,i_2)}^2*{\mathrm{\Σ}}_{u_2,i_2}I{(u_3+u_2,i_3+i_2)}^2}}---\left(3\right)$

In formula, P₂₃(u₃, i₃) represent the registration often organizing electric current and voltage signal, u₃And i₃Represent the voltage signal of a PH detector collection, current signal, u respectively₂And i₂Representing the voltage signal of described 2nd PH detector collection, current signal respectively, T represents mean square deviation computing, and I and I ' represents integral operation;

Described comparing unit calculates the 2nd PH detector signal registration P to a PH detector₂₁, the 3rd PH detector signal registration P to a PH detector₃₁, the 3rd PH detector signal registration P to the 2nd PH detector₃₂。

Above-mentioned three the registration threshold values recorded being averaged, finally overlapped angle value.

3. the water paint being coated on metal surface according to claim 1, it is characterised in that described dispersant is YB-301, the byk-154 of 760w, 750w or BYK production of the production of enlightening height, byk-154, byk-191.

4. the water paint being coated on metal surface according to claim 1, it is characterised in that described defoamer is that TEGO produces: the byk-020 that Foamex-810, Foamex-845 or BYK produce.

5. the water paint being coated on metal surface according to claim 1, it is characterised in that described extender pigment is: blanc fixe, triple superphosphate, Pulvis Talci, Kaolin, aluminium-magnesium silicate, mica powder.

6. the water paint being coated on metal surface according to claim 1, it is characterised in that described coloring pigment is: titanium dioxide, brown iron oxide, carbon powder, phthalocyanine blue, peacock blue, everbright fast yellow, chrome yellow, chrome vermillion, chrome red, zinc green, phthalein viridescent.

7. the water paint being coated on metal surface according to claim 1, it is characterised in that described rust resisting pigment is: zinc phosphate, aluminium triphosphate, Yttrium trinitrate, strontium chromate.

8. the water paint being coated on metal surface according to claim 1, it is characterized in that, described thickening agent is: the alkali swollen thickener of ROHM AND HAAS production and polyurethane thickener, the OMG-0620 that RM-8w or OMG that ase-60, ROHM AND HAAS produce produces.

9. the water paint being coated on metal surface according to claim 1, it is characterized in that, described substrate wetting agents is: the yb-346 that BYK produces, the C1211 that the tego270 of enlightening height production, tego4100, the vertical LC-547 of prosperous Chemical Manufacture, BASF produce.

10. the water paint being coated on metal surface according to claim 1, it is characterised in that other auxiliary agents are: the anti-FA-179 that agent is SERAD production that becomes rusty that dodges, the French CE-660B produced that first creates, sodium nitrite; Salt spray resistance agent is the Z6040 that DOW CORNING produces; Drier is the Borchers OS-123/OS-421 produced or the U.S. TROY TROYMAX produced^TM123。