CN103992720B - A kind of acrylic acid top-coat special-purpose coat and its preparation method - Google Patents

A kind of acrylic acid top-coat special-purpose coat and its preparation method Download PDF

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CN103992720B
CN103992720B CN201410166628.9A CN201410166628A CN103992720B CN 103992720 B CN103992720 B CN 103992720B CN 201410166628 A CN201410166628 A CN 201410166628A CN 103992720 B CN103992720 B CN 103992720B
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component
coat
special
agent
acrylic acid
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CN201410166628.9A
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Chinese (zh)
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CN103992720A (en
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杨松林
吴福娣
陈晓兵
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江苏欣安新材料技术有限公司
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Abstract

The present invention discloses a kind of acrylic acid top-coat special-purpose coat and its preparation method, comprise the first and second two components of equal portions, first component is the two group parts being made up of A, B component, component A in first component comprises modified epoxy, toughner, mica, auxiliary agent, anti-settling agent, the B component in first component comprises: solidifying agent and coupling agent; Component B comprises: polyurethane modified acrylic resin, Rutile type Titanium Dioxide, film coalescence aid, pure water, defoamer, dispersion agent, anti-sudden strain of a muscle rust agent, thickening material; First and second components are prepared respectively the special-purpose coat then obtaining in the present invention by both compounds, this special-purpose coat is two layer composite structure, the stronger difficult drop-off of coating cohesive force, impervious good energy, antiseptic property is good, the strong not easily saponification of weathering resistance, fast dry, can use under cryogenic and play good protective effect.

Description

A kind of acrylic acid top-coat special-purpose coat and its preparation method
Technical field
The present invention relates to a kind of coating and its preparation method, it is specifically related to a kind of acrylic acid top-coat special-purpose coat and its preparation method belongs to protective system technical field.
Background technology
Outdoor steel structure material comprises large-scale engineering machinery, bridge, communal facility etc. Outdoor steel structure material is carried out anti-corrosion measure is necessary, in all kinds of aseptic technic and measure, adopts anticorrosion with coat to be that one is the simplest, and effectively method. Prior art also has some for being sprayed on the coating of body surface, but spraying effect is not very desirable, there is visual appearance difference, perishable, abrasion, the shortcomings such as outdoor weather-proof difference, thus have impact on the visual appearance image appearance of object. Traditional outdoor steel structure material coating is solvent based product, VOC (volatile organic matter) content height, and in manufacture, construction, drying, film-forming process, the VOC environmental pollution given out in air is serious. Along with the increasingly stringent of environmental regulation, coating industry develops towards the direction of nuisanceless, pollution-free, energy-conserving and environment-protective, efficient economy gradually. The steel structure materials such as engineering machinery, bridge, outdoor communal facility owing to volume is relatively big, be widely used and long-term in open air use, its baking condition is limited, so not only require that coating environmental protection and energy saving are pollution-free also need to possess construction simply, conveniently, and require that paint film can seasoning and quick-drying.
Acrylic acid top-coat special-purpose coat has good weatherability, painting cost is low and the advantage such as safe ready, the surfaces such as the steel that are suitable for having primed, aluminium alloy, cement, glass reinforced plastic, can be used for the decoration protective layers such as bridge, power plant, public works, pipeline and storage tank, mechanical means, rack. Such as, but also there is many deficiencies in aforesaid propylene acid finish paint special-purpose coat, VOC emission amount is big, and environmental pollution is big, the shortcomings such as seasoning is slow. A kind of cost of exploitation is low for this reason, and antiseptic property is good, and outdoor weatherability is strong, it is possible to the acrylic acid top-coat special-purpose coat of seasoning and quick-drying and its preparation method become those skilled in the art's technical problem urgently to be resolved hurrily.
Summary of the invention
Technical problem to be solved by this invention is, for the shortcoming that above prior art exists, a kind of acrylic acid top-coat special-purpose coat and its preparation method are proposed, this special-purpose coat is two layer composite structure, the stronger difficult drop-off of coating cohesive force, impervious good energy, antiseptic property is good, the strong not easily saponification of weathering resistance, fast dry, can use under cryogenic and play good protective effect.
The present invention solves the technical scheme of above technical problem:
A kind of acrylic acid top-coat special-purpose coat, comprises the first and second two components of equal portions, and first component is the two group parts being made up of A, B component, and first and second comprise following component in mass fraction:
Component A in first component comprises following component according to the mass fraction: modified epoxy: 30-60 part, toughner: 10-25 part, mica: 10-15 part, auxiliary agent: 1-5 part, wilkinite: 1-4 part;
B component in first component comprises following component according to the mass fraction: modified polyamide class solidifying agent: 20-50 part, modified silane coupler: 10-20 part;
Wherein, the weight ratio of component A and B component is 3:1; Modified epoxy is the one in epoxyfatty acid type resin, propylene oxide acid type resin, ring oxygen isocyanic acid type resin, bisphenol A type epoxy resin, brominated bisphenol a type epoxy resin or phenol aldehyde type epoxy resin;
The first component of the present invention adds a kind of laminal filler of mica, mica add the weather resistance that can improve coating;
The modified polyamide class solidifying agent adopting humidity resistance strong in the present invention, its solidification process is mainly by the hydrogen on the primary, secondary amine of polymeric amide end and epoxy reaction, it is easy to operation, and it is big with resin compatible, avoid aliphatics amine curing agent owing to toxicity is relatively big and is subject to the restriction of temperature and wet condition bigger, be not easy to the problem of operation and aromatic amine solidifying agent due to major part be solid, difficult with mixed with resin etc. problem;
Component B comprises following component according to the mass fraction: polyurethane modified acrylic resin: 45-70 part, Rutile type Titanium Dioxide: 13-25 part, film coalescence aid: 4-15 part, pure water: 14-20 part, defoamer: 0.1-0.2 part, dispersion agent: 0.3-0.7 part, anti-sudden strain of a muscle rust agent: 0.1-0.2 part, thickening material: 0.3-0.5 part;
Wherein, polyurethane modified acrylic resin comprises following composition by mass percentage: the polyurethane prepolymer 20-35% of isocyanato group containing group, hydroxyl acrylic 15-30%, vinylformic acid 20-40%, methacrylic acid 4-6%, above each component sum is 100%; Film coalescence aid is lauryl alcohol ester (Texanol) and dipropylene glycol butyl ether (DPnB), and according to lauryl alcohol ester (Texanol): the part by weight compound of dipropylene glycol butyl ether (DPnB)=1:1 is made.
The second component of the present invention adds Rutile type Titanium Dioxide, Rutile type Titanium Dioxide adds as a kind of color stuffing, compared to adopting general color stuffing, Rutile type Titanium Dioxide is the color stuffing of a kind of opacifying power height, strong coloring force, its particle diameter is little and even, surface has the over-all propertieies such as remarkable whiteness, brightness, gloss, weathering resistance and anti-powdering after sial coating and organism process, and is conducive to improving the over-all properties of coating entirety.
A preparation method for acrylic acid top-coat special-purpose coat, comprises the following steps:
(1) preparation of first component:
A: by the modified epoxy in component A, toughner, auxiliary agent, put in dispersion cylinder respectively, turn on agitator slowly stirs, and stirring velocity is 250 turns/min, stirs after 35 minutes, after estimating its homogeneous transparent, slowly being added under whipped state by anti-settling agent in component A, adjusting rotary speed is 550 turns/min again, and churning time is 32 minutes, control dispersion cylinder temperature��40 DEG C, finally add the mica in component A, stir while adding equally, stand-by after filtering;
B: the coupling agent in B component is fully mixed with solidifying agent, stand-by after filtering;
C: the component prepared in step a and the component obtained in step b are weighed in mass ratio and mixes the first component finished product that solidification can obtain acrylic acid top-coat special-purpose coat;
(2) preparation of second component:
A: the polyurethane prepolymer getting the isocyanato group containing group of 20-35%, the hydroxyl acrylic of 15-30%, the vinylformic acid of 20-40%, the methacrylic acid of 4-6%, each component sum is 100% above, the polyurethane modified acrylic resin being fully mixed in second component;
B: add dispersion agent in the pure water of second component, anti-sudden strain of a muscle rust agent, flow agent and defoamer, stir 10min, stirring velocity is 120-160r/min, then Rutile type Titanium Dioxide is added, high-speed stirring 30min under high shear, stirring velocity is 300-350r/min, then polyurethane modified acrylic resin is added, stir 20-25min, stirring velocity is 60-70r/min, film coalescence aid is added after fully mixing, finally add appropriate thickening material adjusting coating to suitable viscosity, filtration can obtain the second component finished product of acrylic acid top-coat special-purpose coat,
(3) compound of first, second component
The second component that step (two) prepares is sprayed in first component that above-mentioned steps () prepares, after dry, acrylic acid top-coat special-purpose coat can be obtained.
In aforementioned acrylic acid top-coat special-purpose coat, the auxiliary agent in component A is at least one in silicon base polymerizing agent, reactive thinner, additive.
In aforementioned acrylic acid top-coat special-purpose coat, the toughner in component A is the one in polymeric amide, carboxyl liquid acrylonitrile butadiene rubber, poly-nonane diacid acid anhydride or urethane;
Poly-nonane diacid acid anhydride is the effect that the tough effect of a kind of existing increasing of special epoxy resin toughener has again solidification, can reach again the effect of toughner while reducing solidifying agent, and moderate; Polyurethane toughened, not only effective so that coating machine intensity and alternating hot and cold performance all have greatly improved, and resistance to medium is also improved, and cost is also more suitable.
In aforementioned acrylic acid top-coat special-purpose coat, defoamer is one or more in organosilicon, polyethers, organo-siloxane and acid amides.
In aforementioned acrylic acid top-coat special-purpose coat, dispersion agent comprises one or more in hydrophobic modified carboxylic acid sodium salt, polyacrylic acid sodium salt or ammonium salt.
When using hydrophobic molecule modified carboxylic acid sodium salt as dispersion agent, over-all properties reaches optimum, the carboxylic acid sodium salt that reason is hydrophobically modified contains hydrophobic macromolecule and ion segment, in dispersion, existing electrostatic double layer effect is had living space again steric effect, make it that titanium dioxide dispersion effect is better than other dispersion agents, therefore coating system is more stable, and the compact in paint film of formation is plentiful, and barriering effect is better.
In aforementioned acrylic acid top-coat special-purpose coat, anti-sudden strain of a muscle rust agent comprises: one or more in polyoxyethylene glycol dioleate, petroleum sodium sulfonate, amide imidazoline or naphthenic acid alkaline earth salt.
In aforementioned acrylic acid top-coat special-purpose coat, thickening material comprises: one or several in diatomite, sodium bentonite, urethane, polyvinyl alcohol or polyacrylamide.
In the preparation method of aforementioned acrylic acid top-coat special-purpose coat, in b step prepared by step (two) second component, the second component finished product of the acrylic acid top-coat special-purpose coat obtained being used sand mill sand milling, fineness controls be no more than 45 ��m.
The invention has the beneficial effects as follows:
The advantages such as cohesive force is strong, chemical reagent-resistant performance is good that the present invention adopts resin based on modified epoxy to have, and modified epoxy can enhance the ability that coating resists water, ion infiltration, improve the bonding force between coating and metallic matrix, thus improve the protective capacities of coating, in addition, moreover it is possible to increase the intensity of coating, improve sticking power, improve rheological property, reduce costs.
The present invention adds dispersion agent, the effect of dispersion agent increases wet pigment particles, discharge the air between pigment particles, increase the space steric hindrance between pigment, regulate the surface charge of pigment particles, thus prevent particle wadding poly-, reduce paint viscosity, for a good dispersion system, dispersion agent can firmly be adsorbed on the surface of dispersed particle, and good space repulsion is provided, after color stuffing particle is fully disperseed under high velocity agitation, again can not reunite because of Van der Waals force, adsorption layer also can not cause the instability of system when being subject to external force effect from particle surface stripping, thus the physics of optimized coatings and chemical property. the dispersion stabilization of system.
Dispersion agent add the affinity added between color stuffing and auxiliary agent, base-material, accelerate in the space that auxiliary agent penetrates into color stuffing aggregate, contribute to opening of color stuffing granule, connect to get up by color stuffing, auxiliary agent and base-material more closely.
The acrylic resin being polyurethane-modified that the present invention adopts is base-material, acrylic acid top-coat special-purpose coat has the two-fold advantage of vinylformic acid and polyurethane coating, although methacrylic acid consumption is less in polyurethane-modified acrylic resin, but film can be improved to the sticking power of end material, and the curing speed of film can be accelerated.
Film coalescence aid of the present invention is dipropylene glycol and lauryl alcohol ester, paint film can also normal film forming below 5 DEG C, it is to increase the weathering resistance of acrylic acid top-coat special-purpose coat; Dispersion agent of the present invention is hydrophobic modified carboxylic acid sodium salt, and the performance of coating is had a significant impact by dispersion agent, and hydrophobic modified carboxylic acid sodium salt can improve glossiness and the erosion resistance of film.
Acrylic acid top-coat special-purpose coat in the present invention and in its preparation method, acrylic acid top-coat special-purpose coat is two layer composite structure, the stronger difficult drop-off of coating cohesive force, impervious good energy, antiseptic property is good, and weathering resistance is not easily saponification by force, fast dry, can use under cryogenic and play good protective effect, and technique of the present invention has the advantages such as simple to operate, with low cost.
Embodiment
Embodiment 1
The present embodiment is supplied to a kind of acrylic acid top-coat special-purpose coat, comprises the first and second two components, and first component is the two group parts being made up of A, B component, and first and second comprise following component in mass fraction, as shown in following table 1 and 2:
The component that table 1 comprises in mass fraction for first
The component that table 2 comprises in mass fraction for second
Second component Weight part number
Polyurethane modified acrylic resin 70
Rutile type Titanium Dioxide 23
Lauryl alcohol ester (Texanol) 3
Dipropylene glycol butyl ether (DPnB) 3
Pure water 20
Organosilicon 0.2
Hydrophobic modified carboxylic acid sodium salt 0.3
Polyoxyethylene glycol dioleate 0.1
Petroleum sodium sulfonate 0.1
Diatomite 0.3
The preparation method of this special-purpose coat, comprises the following steps;
(1) preparation of first component:
A: the epoxyfatty acid type resin in component A, carboxyl liquid acrylonitrile butadiene rubber, silicon base polymerizing agent are put in dispersion cylinder respectively, turn on agitator slowly stirs, and stirring velocity is 250 turns/min, stirs after 35 minutes, after estimating its homogeneous transparent, slowly being added under whipped state by wilkinite in component A, adjusting rotary speed is 550 turns/min again, and churning time is 32 minutes, control dispersion cylinder temperature��40 DEG C, finally add the mica in component A, stir while adding equally, stand-by after filtering;
B: the modified silane coupler in B component is fully mixed with modified polyamide class solidifying agent, stand-by after filtering;
C: the component prepared in step a and the component obtained in step b are weighed in mass ratio and mixes the first component finished product that solidification can obtain acrylic acid top-coat special-purpose coat;
(2) preparation of second component:
A: the polyurethane prepolymer getting the isocyanato group containing group of 25%, the hydroxyl acrylic of 30%, the vinylformic acid of 40%, the methacrylic acid of 5%, above each component sum is 100%, the polyurethane modified acrylic resin being fully mixed in second component;
B: add hydrophobic modified carboxylic acid sodium salt in the pure water of second component, polyoxyethylene glycol dioleate and petroleum sodium sulfonate and organosilicon, stir 10min, stirring velocity is 130r/min, then Rutile type Titanium Dioxide is added, high-speed stirring 30min under high shear, stirring velocity is 300r/min, then polyurethane modified acrylic resin is added, stir 23min, stirring velocity is 65r/min, lauryl alcohol ester (Texanol) and dipropylene glycol butyl ether (DPnB) is added after fully mixing, finally add appropriate diatomite adjusting coating to suitable viscosity, filtration can obtain the second component finished product of acrylic acid top-coat special-purpose coat,
(3) compound of first, second component
The second component that step (two) prepares is sprayed in first component that above-mentioned steps () prepares, after dry, acrylic acid top-coat special-purpose coat can be obtained.
In the present embodiment, the weight ratio of component A and B component is 3:1; Film coalescence aid be lauryl alcohol ester and dipropylene glycol butyl ether according to lauryl alcohol ester: the part by weight compound of dipropylene glycol butyl ether=1:1 is made.
In the present embodiment, in b step prepared by above-mentioned steps (two) second component, the second component finished product of the acrylic acid top-coat special-purpose coat obtained being used sand mill sand milling, fineness controls be no more than 35 ��m.
The detected result of the present embodiment technical target of the product is as shown in table 3 below;
Every technical indicator of special-purpose coat in table 3 embodiment 1
Product time of drying in use in the present embodiment, end material temperature needs 60 minutes 5 DEG C of tables are dry, does something in disregard of obstacles and needs 10 hours, and solidification needs 5 hours.
Embodiment 2
The present embodiment is supplied to a kind of acrylic acid top-coat special-purpose coat, comprises the first and second two components, and first component is the two group parts being made up of A, B component, and first and second comprise following component in mass fraction, as shown in following table 4 and 5:
The component that table 4 comprises in mass fraction for first
The component that table 5 comprises in mass fraction for second
Second component Weight part number
Polyurethane modified acrylic resin 69
Rutile type Titanium Dioxide 24.5
Lauryl alcohol ester (Texanol) 7.5
Dipropylene glycol butyl ether (DPnB) 7.5
Pure water 20
Organosilicon 0.2
Hydrophobic modified carboxylic acid sodium salt 0.35
Polyoxyethylene glycol dioleate 0.35
Petroleum sodium sulfonate 0.1
Diatomite 0.5
The preparation method of this special-purpose coat, comprises the following steps;
(1) preparation of first component:
A: the bisphenol A type epoxy resin in component A, poly-nonane diacid acid anhydride, reactive thinner are put in dispersion cylinder respectively, turn on agitator slowly stirs, and stirring velocity is 250 turns/min, stirs after 35 minutes, after estimating its homogeneous transparent, slowly being added under whipped state by wilkinite in component A, adjusting rotary speed is 550 turns/min again, and churning time is 32 minutes, control dispersion cylinder temperature��40 DEG C, finally add the mica in component A, stir while adding equally, stand-by after filtering;
B: the modified silane coupler in B component is fully mixed with modified polyamide class solidifying agent, stand-by after filtering;
C: the component prepared in step a and the component obtained in step b are weighed in mass ratio and mixes the first component finished product that solidification can obtain acrylic acid top-coat special-purpose coat;
(2) preparation of second component:
A: the polyurethane prepolymer getting the isocyanato group containing group of 34%, the hydroxyl acrylic of 25%, the vinylformic acid of 35%, the methacrylic acid of 6%, above each component sum is 100%, the polyurethane modified acrylic resin being fully mixed in second component;
B: add hydrophobic modified carboxylic acid sodium salt in the pure water of second component, amide imidazoline and petroleum sodium sulfonate and polyethers, stir 10min, stirring velocity is 160r/min, then Rutile type Titanium Dioxide is added, high-speed stirring 30min under high shear, stirring velocity is 350r/min, then polyurethane modified acrylic resin is added, stir 25min, stirring velocity is 60r/min, lauryl alcohol ester (Texanol) and dipropylene glycol butyl ether (DPnB) is added after fully mixing, finally add appropriate urethane adjusting coating to suitable viscosity, filtration can obtain the second component finished product of acrylic acid top-coat special-purpose coat,
(3) compound of first, second component
The second component that step (two) prepares is sprayed in first component that above-mentioned steps () prepares, after dry, acrylic acid top-coat special-purpose coat can be obtained.
In the present embodiment, the weight ratio of component A and B component is 3:1; Film coalescence aid be lauryl alcohol ester and dipropylene glycol butyl ether according to lauryl alcohol ester: the part by weight compound of dipropylene glycol butyl ether=1:1 is made.
In the present embodiment, in b step prepared by above-mentioned steps (two) second component, the second component finished product of the acrylic acid top-coat special-purpose coat obtained being used sand mill sand milling, fineness controls be no more than 40 ��m.
The detected result of the present embodiment technical target of the product is as shown in table 6 below;
Every technical indicator of special-purpose coat in table 6 embodiment 2
Product time of drying in use in the present embodiment, end material temperature needs 45 minutes 10 DEG C of tables are dry, does something in disregard of obstacles and needs 9 hours, and solidification needs 4 hours.
Embodiment 3
The present embodiment is supplied to a kind of acrylic acid top-coat special-purpose coat, comprises the first and second two components, and first component is the two group parts being made up of A, B component, and first and second comprise following component in mass fraction, as shown in following table 7 and 8:
The component that table 7 comprises in mass fraction for first
The component that table 8 comprises in mass fraction for second
Second component Weight part number
Polyurethane modified acrylic resin 67
Rutile type Titanium Dioxide 25
Lauryl alcohol ester (Texanol) 7.5
Dipropylene glycol butyl ether (DPnB) 7.5
Pure water 20
Organosilicon 0.1
Hydrophobic modified carboxylic acid sodium salt 0.2
Polyoxyethylene glycol dioleate 0.2
Petroleum sodium sulfonate 0.1
Diatomite 0.4
The preparation method of this special-purpose coat, comprises the following steps;
(1) preparation of first component:
A: the phenol aldehyde type epoxy resin in component A, urethane, additive are put in dispersion cylinder respectively, turn on agitator slowly stirs, and stirring velocity is 250 turns/min, stirs after 35 minutes, after estimating its homogeneous transparent, slowly being added under whipped state by wilkinite in component A, adjusting rotary speed is 550 turns/min again, and churning time is 32 minutes, control dispersion cylinder temperature��40 DEG C, finally add the mica in component A, stir while adding equally, stand-by after filtering;
B: the modified silane coupler in B component is fully mixed with modified polyamide class solidifying agent, stand-by after filtering;
C: the component prepared in step a and the component obtained in step b are weighed in mass ratio and mixes the first component finished product that solidification can obtain acrylic acid top-coat special-purpose coat;
(2) preparation of second component:
A: the polyurethane prepolymer getting the isocyanato group containing group of 30%, the hydroxyl acrylic of 28%, the vinylformic acid of 38%, the methacrylic acid of 4%, above each component sum is 100%, the polyurethane modified acrylic resin being fully mixed in second component;
B: add polyacrylic acid sodium salt in the pure water of second component, amide imidazoline and polyoxyethylene glycol dioleate and acid amides, stir 10min, stirring velocity is 145r/min, then Rutile type Titanium Dioxide is added, high-speed stirring 30min under high shear, stirring velocity is 320r/min, then polyurethane modified acrylic resin is added, stir 20min, stirring velocity is 70r/min, lauryl alcohol ester (Texanol) and dipropylene glycol butyl ether (DPnB) is added after fully mixing, finally add appropriate urethane adjusting coating to suitable viscosity, filtration can obtain the second component finished product of acrylic acid top-coat special-purpose coat,
(3) mixing of first, second component
The second component that step (two) prepares is sprayed in first component that above-mentioned steps () prepares, after dry, acrylic acid top-coat special-purpose coat can be obtained.
In the present embodiment, the weight ratio of component A and B component is 3:1; Film coalescence aid be lauryl alcohol ester and dipropylene glycol butyl ether according to lauryl alcohol ester: the part by weight compound of dipropylene glycol butyl ether=1:1 is made.
In the present embodiment, in b step prepared by above-mentioned steps (two) second component, the second component finished product of the acrylic acid top-coat special-purpose coat obtained being used sand mill sand milling, fineness controls be no more than 45 ��m.
The detected result of the present embodiment technical target of the product is as shown in table 9 below;
Every technical indicator of special-purpose coat in table 9 embodiment 3
Product time of drying in use in the present embodiment, end material temperature needs 30 minutes 23 DEG C of tables are dry, does something in disregard of obstacles and needs 7 hours, and solidification needs 2 hours.
Using the acrylic acid top-coat special-purpose coat of the present invention, this special-purpose coat is made up of the first and second two layers of compound, the stronger difficult drop-off of coating cohesive force, impervious good energy, antiseptic property is good, weathering resistance not easily saponification by force, fast dry, can use under cryogenic and play good protective effect.
In addition to the implementation, the present invention can also have other enforcement modes. All employings are equal to replacement or the technical scheme of equivalent transformation formation, all drop on the protection domain of requirement of the present invention.

Claims (9)

1. an acrylic acid top-coat special-purpose coat, it is characterised in that, comprise the first and second two components of equal portions, described first component is the two group parts being made up of A, B component, and described first and second comprise following component in mass fraction:
Component A in described first component comprises following component according to the mass fraction:
B component in described first component comprises following component according to the mass fraction:
Solidifying agent 20-50 part
Coupling agent 10-20 part
Wherein, the weight ratio of described component A and B component is 3:1; Described modified epoxy is the one in epoxyfatty acid type resin, propylene oxide acid type resin, ring oxygen isocyanic acid type resin, bisphenol A type epoxy resin, brominated bisphenol a type epoxy resin or phenol aldehyde type epoxy resin; Described anti-settling agent is wilkinite; Described solidifying agent is modified polyamide class solidifying agent; Described coupling agent is modified silane coupler;
Described component B comprises following component according to the mass fraction:
Wherein, described polyurethane modified acrylic resin comprises following composition by mass percentage: the polyurethane prepolymer of isocyanato group containing group: 20-35%, hydroxyl acrylic: 15-30%, vinylformic acid: 20-40%, methacrylic acid: 4-6%, above each component sum is 100%; Described film coalescence aid be lauryl alcohol ester and dipropylene glycol butyl ether according to lauryl alcohol ester: the part by weight compound of dipropylene glycol butyl ether=1:1 is made.
2. acrylic acid top-coat special-purpose coat according to claim 1, it is characterised in that, the auxiliary agent in described component A is at least one in silicon base polymerizing agent, reactive thinner.
3. acrylic acid top-coat special-purpose coat according to claim 1, it is characterised in that, the toughner in described component A is the one in polymeric amide, carboxyl liquid acrylonitrile butadiene rubber, poly-nonane diacid acid anhydride or urethane.
4. acrylic acid top-coat special-purpose coat according to claim 1, it is characterised in that, described defoamer is one or more in organosilicon, polyethers or acid amides.
5. acrylic acid top-coat special-purpose coat according to claim 1, it is characterised in that, described dispersion agent comprises one or more in hydrophobic modified carboxylic acid sodium salt, polyacrylic acid sodium salt or ammonium salt.
6. acrylic acid top-coat special-purpose coat according to claim 1, it is characterised in that, described anti-sudden strain of a muscle rust agent comprises: one or more in polyoxyethylene glycol dioleate, petroleum sodium sulfonate, amide imidazoline or naphthenic acid alkaline earth salt.
7. acrylic acid top-coat special-purpose coat according to claim 1, it is characterised in that, described thickening material comprises: one or several in diatomite, sodium bentonite, urethane, polyvinyl alcohol or polyacrylamide.
8. the preparation method of acrylic acid top-coat special-purpose coat as claimed in claim 1, it is characterised in that, comprise the following steps:
(1) preparation of first component:
A: by the modified epoxy in component A, toughner, auxiliary agent, put in dispersion cylinder respectively, turn on agitator slowly stirs, and stirring velocity is 250 turns/min, stirs after 35 minutes, after estimating its homogeneous transparent, slowly being added under whipped state by anti-settling agent in component A, adjusting rotary speed is 550 turns/min again, and churning time is 32 minutes, control dispersion cylinder temperature��40 DEG C, finally add the mica in component A, stir while adding equally, stand-by after filtering;
B: the coupling agent in B component is fully mixed with solidifying agent, stand-by after filtering;
C: the component prepared in step a and the component obtained in step b are weighed in mass ratio and mixes the first component finished product that solidification can obtain acrylic acid top-coat special-purpose coat;
(2) preparation of second component:
A: the polyurethane prepolymer getting the isocyanato group containing group of 20-35%, the hydroxyl acrylic of 15-30%, the vinylformic acid of 20-40%, the methacrylic acid of 4-6%, each component sum is 100% above, the polyurethane modified acrylic resin being fully mixed in second component;
B: add dispersion agent, anti-sudden strain of a muscle rust agent and defoamer in the pure water of second component, stir 10min, stirring velocity is 120-160r/min, then Rutile type Titanium Dioxide is added, high-speed stirring 30min under high shear, stirring velocity is 300-350r/min, then polyurethane modified acrylic resin is added, stir 20-25min, stirring velocity is 60-70r/min, after fully mixing, add film coalescence aid, finally add appropriate thickening material adjusting coating to suitable viscosity, filter the second component finished product that can obtain acrylic acid top-coat special-purpose coat;
(3) compound of first, second component
The second component that step (two) prepares is sprayed in first component that above-mentioned steps () prepares, after dry, acrylic acid top-coat special-purpose coat can be obtained.
9. the preparation method of acrylic acid top-coat special-purpose coat according to claim 8, it is characterized in that, in b step prepared by described step (two) second component, the second component finished product of the acrylic acid top-coat special-purpose coat obtained being used sand mill sand milling, fineness controls be no more than 45 ��m.
CN201410166628.9A 2014-04-23 2014-04-23 A kind of acrylic acid top-coat special-purpose coat and its preparation method CN103992720B (en)

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CN104673054B (en) * 2015-03-10 2017-08-04 江苏欣安新材料技术有限公司 A kind of nano magnalium corrosion resistant coating and preparation method thereof
CN107541181A (en) * 2017-09-05 2018-01-05 复旦大学 A kind of color inhibition organosilicon adhesive and preparation method thereof
CN109679421A (en) * 2018-11-21 2019-04-26 镇江禹亨新材料有限公司 A kind of single-component water-based acrylic acid antisepsis finishing paint of normal temperature self-drying type
CN109777275A (en) * 2018-12-29 2019-05-21 安徽鑫发铝业有限公司 A kind of corrosion resistant, acid resistance aluminum profile
CN110589230A (en) * 2019-09-04 2019-12-20 湖州金洁实业有限公司 High-temperature-resistant aluminum foil easy to tear and cover
CN110698935A (en) * 2019-10-16 2020-01-17 宜兴市巨人涂料有限公司 Outdoor water-based anticorrosive finish paint and preparation method thereof

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