CN103992720A - Special coating for acrylic finishes, and making method thereof - Google Patents
Special coating for acrylic finishes, and making method thereof Download PDFInfo
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- CN103992720A CN103992720A CN201410166628.9A CN201410166628A CN103992720A CN 103992720 A CN103992720 A CN 103992720A CN 201410166628 A CN201410166628 A CN 201410166628A CN 103992720 A CN103992720 A CN 103992720A
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Abstract
The invention discloses a special coating for acrylic finishes, and a making method thereof. The special coat comprises a component I and a component II having a same amount with the component II, the component I is formed by a component A and a component B, the component A in the component I comprises modified epoxy resin, a flexibilizer, mica, an assistant and an anti-settling agent, the component B in the component comprises a curing agent and a coupling agent; and the component II comprises polyurethane modified acrylic resin, rutile titanium dioxide, a film forming assistant, purified water, an antifoaming agent, a dispersant, a flash rust inhibitor and a thickening agent. The special coating is obtained by preparing the component I, preparing the component II and compounding the component I with the component II. The coating has the advantages of strong adhesion, unlikely shedding, good impermeability, good corrosion resistance, strong weatherability, unlikely saponification and fast drying, and has a very good protection effect at a low temperature.
Description
Technical field
The present invention relates to a kind of coating and preparation method thereof, be specifically related to a kind of acrylic acid top-coat special-purpose coat and preparation method thereof and belong to protective system technical field.
Background technology
Outdoor steel structure material comprises large-scale engineering machinery, bridge, communal facility etc.It is necessary that outdoor steel structure material is carried out to anti-corrosion measure, and in all kinds of aseptic technics and measure, adopting anticorrosion with coat is that one is the simplest, and effectively method.In prior art, have some for being sprayed on the coating of body surface, but spraying effect not very desirable, exists visual appearance poor yet, perishable, wearing and tearing, the shortcomings such as outdoor weather-proof difference, thus affect the visual appearance image appearance of object.Traditional outdoor steel structure material is solvent-borne type product with coating, and VOC (volatile organic matter) content is high, manufacturing, in construction, dry, film-forming process, serious to the VOC environmental pollution giving out in air.Along with the increasingly stringent of environmental regulation, coating industry is gradually towards the future development of nuisanceless, pollution-free, energy-conserving and environment-protective, efficient economy.The steel structure materials such as engineering machinery, bridge, outdoor communal facility because volume is large, be widely used and use out of doors for a long time, its baking condition is limited, so not only require coating environmental protection and energy saving, pollution-free also to need to possess construction simple, convenient, and require the paint film can seasoning and quick-drying.
Acrylic acid top-coat special-purpose coat has good weatherability, the advantages such as the low and safe ready of painting cost, the surfaces such as the steel that are suitable for having primed, aluminium alloy, cement, glass reinforced plastic, can be used for bridge, power plant, public works, pipeline and storage tank, mechanical means, rack etc. and decorate protective layer.The shortcomings such as but aforesaid propylene acid finish paint special-purpose coat also exists many deficiencies, and for example VOC quantity discharged is large, and environmental pollution is large, and seasoning is slow.Develop a kind of cost low, antiseptic property is good for this reason, and outdoor weatherability is strong, can seasoning and the acrylic acid top-coat special-purpose coat of quick-drying and preparation method thereof 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, the shortcoming existing for above prior art, a kind of acrylic acid top-coat special-purpose coat and preparation method thereof is 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, weathering resistance is difficult for by force saponification, fast dry, can under cold condition, use and play good protective effect.
The technical scheme that the present invention solves above technical problem is:
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 components that are made up of A, B component, and first and second comprise following component in mass fraction:
A components in mass portion in first component is counted meter and is comprised following component: modified epoxy: 30-60 part, toughner: 10-25 part, mica: 10-15 part, auxiliary agent: 1-5 part, wilkinite: 1-4 part;
B components in mass portion in first component is counted meter and is comprised following component: modified polyamide class solidifying agent: 20-50 part, modified silane coupler: 10-20 part;
Wherein, the weight ratio of A component and B component is 3:1; Modified epoxy is the one in epoxyfatty acid type resin, propylene oxide acid type resin, epoxy isocyanide acid type resin, bisphenol A type epoxy resin, brominated bisphenol a type epoxy resin or phenol aldehyde type epoxy resin;
In first component of the present invention, added a kind of laminal filler of mica, mica add the weather resistance that can improve coating;
In the present invention, adopt the modified polyamide class solidifying agent that humidity resistance is strong, its solidification process is mainly by hydrogen and epoxy reaction on the primary, secondary amine of polymeric amide end, easy handling, and large with resin compatible, avoid aliphatics amine solidifying agent because toxicity is large and be subject to the restriction of temperature and wet condition larger, be not easy to the problem of operation and aromatic amine solidifying agent because major part is solid, the problems such as difficult and mixed with resin;
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): compound the making of part by weight of dipropylene glycol butyl ether (DPnB)=1:1.
In second component of the present invention, add Rutile type Titanium Dioxide, Rutile type Titanium Dioxide adds as a kind of color stuffing, than adopting general color stuffing, Rutile type Titanium Dioxide is that a kind of opacifying power is high, the color stuffing of 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-efflorescence after sial coating and organism processing, is conducive to improve 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 A component, toughner, auxiliary agent, put into and disperse in cylinder respectively, turn on agitator slowly stirs, and stirring velocity is 250 turn/min, stirs after 35 minutes, estimate after its homogeneous transparent, the anti-settling agent in A component is slowly added under whipped state, adjusting rotary speed is 550 turn/min again, and churning time is 32 minutes, control and disperse cylinder temperature≤40 DEG C, finally add the mica in A component, 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 preparing in step a and the component obtaining in step b are weighed to mix in mass ratio and solidify the first component finished product that can obtain acrylic acid top-coat special-purpose coat;
(2) preparation of second component:
A: the polyurethane prepolymer of 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, is fully mixed and made into the polyurethane modified acrylic resin in second component;
B: add dispersion agent in the pure water of second component, the agent of anti-sudden strain of a muscle rust, flow agent and defoamer, stir 10min, stirring velocity is 120-160r/min, then add Rutile type Titanium Dioxide, high-speed stirring 30min under high shear, stirring velocity is 300-350r/min, then add polyurethane modified acrylic resin, 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, filtration can obtain the second component finished product of acrylic acid top-coat special-purpose coat,
(3) first, second component is compound
The second component that step (two) is prepared is sprayed in the first component that above-mentioned steps () prepares, and can obtain acrylic acid top-coat special-purpose coat after dry.
In aforementioned acrylic acid top-coat special-purpose coat, the auxiliary agent in A component is at least one in silica-based polymerizing agent, reactive thinner, additive.
In aforementioned acrylic acid top-coat special-purpose coat, the toughner in A component is the one in polymeric amide, carboxyl liquid acrylonitrile butadiene rubber, poly-nonane diacid acid anhydride or urethane;
Poly-nonane diacid acid anhydride is that the existing toughness reinforcing effect of a kind of special epoxy resin toughener has again curing effect, can reach again the effect of toughner in reducing solidifying agent, and moderate; Polyurethane toughened, not only effective, coating machine intensity and alternating hot and cold performance are all had greatly improved, and resistance to medium is also improved, 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.
In the time using hydrophobic molecule modified carboxylic acid sodium salt as dispersion agent, it is optimum that over-all properties reaches, reason is that the carboxylic acid sodium salt of hydrophobically modified contains hydrophobic macromole and ion segment, the existing electrostatic double layer effect steric effect of having living space again in dispersion, make it disperse effect better than other dispersion agents to titanium dioxide, therefore coating system is more stable, and the paint film densification of formation is plentiful, and barriering effect is better.
In aforementioned acrylic acid top-coat special-purpose coat, the agent of anti-sudden strain of a muscle rust 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 obtaining is used to sand mill sand milling, fineness is controlled at and is no more than 45 μ m.
The invention has the beneficial effects as follows:
The present invention adopts modified epoxy to have the advantages such as cohesive force is strong, chemical reagent-resistant performance is good as base resin, and modified epoxy can strengthen coating and resist the ability that water, ion infiltrate, improve the bonding force between coating and metallic matrix, thereby improve the protective capacities of coating, in addition, can also increase coating intensity, improve sticking power, improve rheological property, reduce costs.
In the present invention, add dispersion agent, the effect of dispersion agent is humidification pigment particles, discharge the air between pigment particles, increase sterically hindered between pigment, regulate the surface charge of pigment particles, thereby prevent that particle wadding is poly-, reduce paint viscosity, for a good dispersion system, dispersion agent can be adsorbed on the surface of dispersed particle securely, and provide good space repulsion, after color stuffing particle is fully disperseed under high-speed stirring, can again not reunite because of Van der Waals force, adsorption layer also can not peeled off and cause the unstable of system from particle surface in the time being subject to External Force Acting, thereby the physics of optimized coatings and chemical property.The dispersion stabilization of system.
Increase the adding of dispersion agent the affinity between color stuffing and auxiliary agent, base-material, accelerated auxiliary agent and penetrated in the space of color stuffing aggregate, contributed to opening of color stuffing granule, more closely color stuffing, auxiliary agent and base-material have been coupled together.
What the present invention adopted is that polyurethane-modified acrylic resin 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 can improve the sticking power of film to ground, and can accelerate the curing speed of film.
Film coalescence aid of the present invention is dipropylene glycol and lauryl alcohol ester, and paint film, 5 DEG C of also normal film forming below, has improved 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 dispersion agent has a significant impact the performance of coating, and hydrophobic modified carboxylic acid sodium salt can improve glossiness and the erosion resistance of film.
In acrylic acid top-coat special-purpose coat in the present invention and preparation method thereof, 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 difficult for by force saponification, fast dry, can under cold condition, use 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 offers a kind of acrylic acid top-coat special-purpose coat, comprises the first and second two components, and first component is the two components that are 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 | Parts by weight |
| 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: epoxyfatty acid type resin, carboxyl liquid acrylonitrile butadiene rubber, silica-based polymerizing agent in A component are put into respectively and disperseed in cylinder, turn on agitator slowly stirs, and stirring velocity is 250 turn/min, stirs after 35 minutes, estimate after its homogeneous transparent, the wilkinite in A component is slowly added under whipped state, adjusting rotary speed is 550 turn/min again, and churning time is 32 minutes, control and disperse cylinder temperature≤40 DEG C, finally add the mica in A component, 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 preparing in step a and the component obtaining in step b are weighed to mix in mass ratio and solidify the first component finished product that can obtain acrylic acid top-coat special-purpose coat;
(2) preparation of second component:
A: get the polyurethane prepolymer of 25% isocyanato group containing group, 30% hydroxyl acrylic, 40% vinylformic acid, 5% methacrylic acid, above each component sum is 100%, is fully mixed and made into the polyurethane modified acrylic resin 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 add Rutile type Titanium Dioxide, high-speed stirring 30min under high shear, stirring velocity is 300r/min, then add polyurethane modified acrylic resin, stir 23min, stirring velocity is 65r/min, after fully mixing, add lauryl alcohol ester (Texanol) and dipropylene glycol butyl ether (DPnB), 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) first, second component is compound
The second component that step (two) is prepared is sprayed in the first component that above-mentioned steps () prepares, and can obtain acrylic acid top-coat special-purpose coat after dry.
In the present embodiment, the weight ratio of A component and B component is 3:1; Film coalescence aid is lauryl alcohol ester and dipropylene glycol butyl ether according to lauryl alcohol ester: compound the making of part by weight of dipropylene glycol butyl ether=1:1.
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 obtaining is used to sand mill sand milling, fineness is controlled at and is no more than 35 μ m.
The detected result of the present embodiment technical target of the product is as shown in table 3 below;
The all technical of special-purpose coat in table 3 embodiment 1
Product time of drying in use in the present embodiment, ground temperature needs 60 minutes at 5 DEG C of surface dryings, does something in disregard of obstacles and needs 10 hours, solidifies and needs 5 hours.
Embodiment 2
The present embodiment offers a kind of acrylic acid top-coat special-purpose coat, comprises the first and second two components, and first component is the two components that are 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 | Parts by weight |
| 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 A component, poly-nonane diacid acid anhydride, reactive thinner are put into respectively and disperseed in cylinder, turn on agitator slowly stirs, and stirring velocity is 250 turn/min, stirs after 35 minutes, estimate after its homogeneous transparent, the wilkinite in A component is slowly added under whipped state, adjusting rotary speed is 550 turn/min again, and churning time is 32 minutes, control and disperse cylinder temperature≤40 DEG C, finally add the mica in A component, 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 preparing in step a and the component obtaining in step b are weighed to mix in mass ratio and solidify the first component finished product that can obtain acrylic acid top-coat special-purpose coat;
(2) preparation of second component:
A: get the polyurethane prepolymer of 34% isocyanato group containing group, 25% hydroxyl acrylic, 35% vinylformic acid, 6% methacrylic acid, above each component sum is 100%, is fully mixed and made into the polyurethane modified acrylic resin 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 add Rutile type Titanium Dioxide, high-speed stirring 30min under high shear, stirring velocity is 350r/min, then add polyurethane modified acrylic resin, stir 25min, stirring velocity is 60r/min, after fully mixing, add lauryl alcohol ester (Texanol) and dipropylene glycol butyl ether (DPnB), 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) first, second component is compound
The second component that step (two) is prepared is sprayed in the first component that above-mentioned steps () prepares, and can obtain acrylic acid top-coat special-purpose coat after dry.
In the present embodiment, the weight ratio of A component and B component is 3:1; Film coalescence aid is lauryl alcohol ester and dipropylene glycol butyl ether according to lauryl alcohol ester: compound the making of part by weight of dipropylene glycol butyl ether=1:1.
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 obtaining is used to sand mill sand milling, fineness is controlled at and is no more than 40 μ m.
The detected result of the present embodiment technical target of the product is as shown in table 6 below;
The all technical of special-purpose coat in table 6 embodiment 2
Product time of drying in use in the present embodiment, ground temperature needs 45 minutes at 10 DEG C of surface dryings, does something in disregard of obstacles and needs 9 hours, solidifies and needs 4 hours.
Embodiment 3
The present embodiment offers a kind of acrylic acid top-coat special-purpose coat, comprises the first and second two components, and first component is the two components that are 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 | Parts by weight |
| 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 A component, urethane, additive are put into respectively and disperseed in cylinder, turn on agitator slowly stirs, and stirring velocity is 250 turn/min, stirs after 35 minutes, estimate after its homogeneous transparent, the wilkinite in A component is slowly added under whipped state, adjusting rotary speed is 550 turn/min again, and churning time is 32 minutes, control and disperse cylinder temperature≤40 DEG C, finally add the mica in A component, 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 preparing in step a and the component obtaining in step b are weighed to mix in mass ratio and solidify the first component finished product that can obtain acrylic acid top-coat special-purpose coat;
(2) preparation of second component:
A: get the polyurethane prepolymer of 30% isocyanato group containing group, 28% hydroxyl acrylic, 38% vinylformic acid, 4% methacrylic acid, above each component sum is 100%, is fully mixed and made into the polyurethane modified acrylic resin 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 add Rutile type Titanium Dioxide, high-speed stirring 30min under high shear, stirring velocity is 320r/min, then add polyurethane modified acrylic resin, stir 20min, stirring velocity is 70r/min, after fully mixing, add lauryl alcohol ester (Texanol) and dipropylene glycol butyl ether (DPnB), 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) is prepared is sprayed in the first component that above-mentioned steps () prepares, and can obtain acrylic acid top-coat special-purpose coat after dry.
In the present embodiment, the weight ratio of A component and B component is 3:1; Film coalescence aid is lauryl alcohol ester and dipropylene glycol butyl ether according to lauryl alcohol ester: compound the making of part by weight of dipropylene glycol butyl ether=1:1.
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 obtaining is used to sand mill sand milling, fineness is controlled at and is no more than 45 μ m.
The detected result of the present embodiment technical target of the product is as shown in table 9 below;
The all technical of special-purpose coat in table 9 embodiment 3
Product time of drying in use in the present embodiment, ground temperature needs 30 minutes at 23 DEG C of surface dryings, does something in disregard of obstacles and needs 7 hours, solidifies and needs 2 hours.
Use acrylic acid top-coat special-purpose coat of the present invention, this special-purpose coat two-layerly compoundly forms by first and second, the stronger difficult drop-off of coating cohesive force, impervious good energy, antiseptic property is good, and weathering resistance is difficult for by force saponification, fast dry, can under cold condition, use and play good protective effect.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or 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, is characterized in that, comprises the first and second two components of equal portions, and described first component is the two components that are made up of A, B component, and described first and second comprise following component in mass fraction:
A components in mass portion in described first component is counted meter and is comprised following component:
Modified epoxy 30-60 part
Toughner 10-25 part
Mica 10-15 part
Auxiliary agent 1-5 part
Anti-settling agent 1-4 part
B components in mass portion in described first component is counted meter and is comprised following component:
Solidifying agent 20-50 part
Coupling agent 10-20 part
Wherein, the weight ratio of described A component and B component is 3:1; Described modified epoxy is the one in epoxyfatty acid type resin, propylene oxide acid type resin, epoxy isocyanide 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:
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, 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 is lauryl alcohol ester and dipropylene glycol butyl ether according to lauryl alcohol ester: compound the making of part by weight of dipropylene glycol butyl ether=1:1.
2. acrylic acid top-coat special-purpose coat according to claim 1, is characterized in that, the auxiliary agent in described A component is at least one in silica-based polymerizing agent, reactive thinner, additive.
3. acrylic acid top-coat special-purpose coat according to claim 1, is characterized in that, the toughner in described A component 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, is characterized in that, described defoamer is one or more in organosilicon, polyethers, organo-siloxane or acid amides.
5. acrylic acid top-coat special-purpose coat according to claim 1, is characterized 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, is characterized 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, is characterized 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, is characterized in that, comprises the following steps:
(1) preparation of first component:
A: by the modified epoxy in A component, toughner, auxiliary agent, put into and disperse in cylinder respectively, turn on agitator slowly stirs, and stirring velocity is 250 turn/min, stirs after 35 minutes, estimate after its homogeneous transparent, the anti-settling agent in A component is slowly added under whipped state, adjusting rotary speed is 550 turn/min again, and churning time is 32 minutes, control and disperse cylinder temperature≤40 DEG C, finally add the mica in A component, 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 preparing in step a and the component obtaining in step b are weighed to mix in mass ratio and solidify the first component finished product that can obtain acrylic acid top-coat special-purpose coat;
(2) preparation of second component:
A: the polyurethane prepolymer of 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, is fully mixed and made into the polyurethane modified acrylic resin in second component;
B: add dispersion agent in the pure water of second component, the agent of anti-sudden strain of a muscle rust, flow agent and defoamer, stir 10min, stirring velocity is 120-160r/min, then add Rutile type Titanium Dioxide, high-speed stirring 30min under high shear, stirring velocity is 300-350 r/min, then add polyurethane modified acrylic resin, stir 20-25min, stirring velocity is 60-70 r/min, after fully mixing, add film coalescence aid, 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) first, second component is compound
The second component that step (two) is prepared is sprayed in the first component that above-mentioned steps () prepares, and can obtain acrylic acid top-coat special-purpose coat after dry.
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 obtaining is used to sand mill sand milling, fineness is controlled at and is no more than 45 μ m.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410166628.9A CN103992720B (en) | 2014-04-23 | 2014-04-23 | A kind of acrylic acid top-coat special-purpose coat and its preparation method |
Applications Claiming Priority (1)
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| CN104356926A (en) * | 2014-11-05 | 2015-02-18 | 侨健新能源科技（苏州）有限公司 | Abrasion-proof water paint with high mechanical property for engineering machinery |
| CN104673054A (en) * | 2015-03-10 | 2015-06-03 | 江苏欣安新材料技术有限公司 | Nano magnesium-aluminum anti-corrosion 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 |
| CN111594648A (en) * | 2020-06-04 | 2020-08-28 | 浙江方顿仪表阀门有限公司 | High pressure resistant reverse needle valve |
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| CN104356926A (en) * | 2014-11-05 | 2015-02-18 | 侨健新能源科技（苏州）有限公司 | Abrasion-proof water paint with high mechanical property for engineering machinery |
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| CN104673054A (en) * | 2015-03-10 | 2015-06-03 | 江苏欣安新材料技术有限公司 | Nano magnesium-aluminum anti-corrosion coating and preparation method thereof |
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| 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 |
| CN111594648A (en) * | 2020-06-04 | 2020-08-28 | 浙江方顿仪表阀门有限公司 | High pressure resistant reverse needle valve |
| CN115124912A (en) * | 2021-03-25 | 2022-09-30 | 浙江博星化工涂料有限公司 | High-performance interior wall protective wall film and preparation method thereof |
| CN115124912B (en) * | 2021-03-25 | 2023-07-07 | 浙江博星化工涂料有限公司 | High-performance inner wall protective wall film and preparation method thereof |
| CN113186423A (en) * | 2021-04-13 | 2021-07-30 | 台州八达阀门有限公司 | Lead-free corrosion-resistant bronze alloy |
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