CN104017489B - A kind of nano-titanium dioxide modified acrylic polyurethane finish paint and preparation method thereof - Google Patents
A kind of nano-titanium dioxide modified acrylic polyurethane finish paint and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of preparation method of nano-titanium dioxide modified acrylic polyurethane finish paint, belong to nanotechnology and corrosion protection technology field.Which solve the problem such as acrylic polyurethane finish paint salt spray resistance aging resistance in prior art, salt water resistance improving soaking difference.Preparation method of the present invention comprises: first carry out high speed dispersion by adding coupling agent in titania solution, is obtained the nano titanium dioxide powder of modification by the step such as concentrated; Then gather in modified polyurethane resin to vinylformic acid and add solvent, color stuffing, auxiliary agent and catalyzer successively, fully react to obtain acrylated polyurethane resin; Finally joined in acrylated polyurethane resin by the nano titanium dioxide powder of modification and carry out graft reaction, solidification, drying, obtain nano-titanium dioxide modified acrylic polyurethane finish paint.The finish paint that the present invention prepares, its preparation method is simple, and the facilities such as coastal building, steel bridge, petroleum and petrochemical industry pipeline and storage tank have very high using value.
Description
Technical field
The invention belongs to nanotechnology and corrosion protection technology field, be specifically related to a kind of nano-titanium dioxide modified acrylic polyurethane finish paint and preparation method thereof.
Background technology
Acrylic polyurethane finish paint is development recent years a kind of coating rapidly, and its hardness, flexility are good, have good weather resistance and glossiness retention, and drying property is good and surface drying fast, just can surface drying about about half hour.But this finish paint can be deteriorated in the environment neutrality of high-temperature, high humidity, easily loss of gloss, variable color and easily bubbling, and is extremely not suitable for using in some coastlands, at present usually through improving antiseptic property to its modification.
The method of modifying of conventional propionic acid polyurethane finish has epoxy resin modification, organic-silicon-modified and nano inorganic material-modified.Epoxy resin modification can increase the characteristics such as the mechanical property of coating, cohesive strength, water-fast, solvent resistant; The organic-silicon-modified oxidation-resistance of coating and the hydrophobicity of can making gets a promotion; Nano inorganic material-modifiedly comprise Nano-meter SiO_2
2modification, nano-TiO
2modification, ZnO Modified etc., can make the antiseptic properties such as its salt spray resistance aging, ultraviolet aging resistance, salt water resistance immersion property obtain arriving very much the lifting of degree while promoting coating mechanical property.Research finds that adding the lifting of coating weathering resistance of nano titanium oxide is particularly remarkable.
In numerous nano inorganic material, nano-TiO
2owing to possessing higher chemical stability, photocatalysis characteristic, thermostability, the performance such as nontoxic, be therefore often used to prepare novel environmental protection coating material, corrosion resistant coating, antistatic coating etc.Nano-TiO
2particle surface have a large amount of-OH can with on acroleic acid polyurethane macromolecular chain-OH forms hydrogen bond or dewaters and form Ti-O-C chemical bond, significantly improves the antiseptic property of Acrylic Polyurethane Coating.And nano-TiO
2there is good sorption, along with nano-TiO to UV-light
2interpolation, coating anti-ultraviolet ageing performance can obtain corresponding lifting.Acroleic acid polyurethane/nano-TiO
2composite membrane combine that Acrylic Polyurethane Coating has numerous in variety, snappiness good, the feature of easy film forming and nano-TiO
2hard, high temperature resistant, corrosion-resistant, ageing-resistant, the constitutionally stable feature of the matter had, makes the site size between organic phase and inorganic phase reach nanometer scale, thus shows the performance of many excellences.Both possessed the well processed use properties of macromolecular material, possessed again the new function characteristics such as good optical, electrical, the magnetic of inorganic nano material.
In sum, three kinds of method of modifying for propionic acid polyurethane finish: epoxy resin modification, organic-silicon-modified and nano inorganic material-modified, wherein nano-TiO
2modification is particularly significant for the lifting of anticorrosion with coat performance.Up to the present, about nano-TiO
2the research of modified acrylic polyurethane finish paint is also few, wherein to nano-TiO
2report is rarely had especially in the research of modified acrylic polyurethane finish paint after surface treatment.
Summary of the invention
The present invention proposes a kind of nano-titanium dioxide modified acrylic polyurethane finish paint and preparation method thereof, it obtains finely dispersed nano titanium dioxide powder by surface modification, be grafted in acrylic polyurethane finish paint coating, thus the nano-titanium dioxide modified acrylic polyurethane finish paint after acquisition surface treatment, the finish paint that the present invention prepares has the advantages such as excellent sticking power, glossiness, salt spray resistance etch, ultraviolet aging resistance and salt water resistance immersion.
Technical solution of the present invention comprises:
A preparation method for nano-titanium dioxide modified acrylic polyurethane finish paint, comprises the following steps:
A prepares the nano titanium dioxide powder of modification, the nano titanium oxide choosing certain size carries out drying, after dissolving, pre-dispersed process is carried out under putting into Ultrasonic Conditions, obtain pre-dispersed solution, in pre-dispersed solution, add coupling agent fully mix, obtain mixing solutions, the add-on of described coupling agent is the 0.5%-10% of described nano titanium oxide quality, described mixing solutions is disperseed under certain temperature and speed conditions, obtain modified nanometer titanium dioxide titanium solution, described nanometer titanium dioxide titanium solution is concentrated, dry, obtain the nano titanium dioxide powder of modification,
B prepares acrylated polyurethane resin, choose a certain amount of acrylic acid modified polyurethane resin, remove a small amount of impurity by underpressure distillation, then in the acrylic acid modified polyurethane resin after distillation, add solvent, color stuffing, auxiliary agent and catalyzer successively, fully react to obtain acrylated polyurethane resin; Above-mentioned solvent is the mixing solutions of vinyl acetic monomer, N-BUTYL ACETATE, toluene, dimethylbenzene, butanone, hexone and pimelinketone, described solvent acetic acid ethyl ester: N-BUTYL ACETATE: toluene: dimethylbenzene: butanone: hexone: the weight ratio of pimelinketone is 1:0.2 ~ 0.8:0.3 ~ 0.7:0.6 ~ 1.1:0.2 ~ 0.6:0.1 ~ 0.3:0.2 ~ 0.5;
C grafting, nano titanium dioxide powder gained modification being prepared by step a joins in the acrylated polyurethane resin of step b gained, ultrasonic disperse is carried out after abundant mixing, obtain dispersion paints, described dispersion paints is disperseed, in the coating after dispersion, add solidifying agent, carry out after mixing brushing, solidify, dry, obtain nano-titanium dioxide modified acrylic polyurethane finish paint.
As a preferred version of the present invention, in step c, the nano titanium dioxide powder of described modification is 0.5 ~ 10:100 with the ratio of described acrylated polyurethane resin parts by weight, and described solidifying agent is 10 ~ 20:100 with the ratio of the parts by weight of described acrylated polyurethane resin.
As another preferred version of the present invention, in step a, described coupling agent is the one in chain alkyl Trimethoxy silane, vinyltriethoxysilane, γ-aminopropyl triethoxysilane, γ-(2,3)-glycidoxy-propyltrimethoxy silane, γ-methacryloxypropyl trimethoxy silane.
Further, in step a, described mixing solutions temperature is 20 ~ 150 DEG C, rotating speed is 100 ~ 1000r/min, and jitter time is 0.5 ~ 24h, and the bake out temperature of described nanometer titanium dioxide titanium solution is 30 ~ 200 DEG C.
Further, in step b, described color stuffing is the mixture of one or more in titanium dioxide, iron oxide red, iron oxide yellow, phthalocyanine green, Tolylamine purple, carbon black; Described auxiliary agent is dispersion agent, flow agent, initiator, stopper, anti-settling agent, photostabilizer and antiwear assistant; Described catalyzer is the one in dibutyl tin laurate, stannous octoate and dibutyitin maleate; Ratio 5 ~ 15:2 ~ 10:3 ~ 12:1 ~ 8:1 ~ 6:1 ~ the 5:100 of the parts by weight of described titanium dioxide, iron oxide red, iron oxide yellow, phthalocyanine green, Tolylamine purple, carbon black, acrylic acid modified polyurethane resin, described catalyzer is 0.02 ~ 0.5:100 with the ratio of the parts by weight of described acrylic acid modified polyurethane resin.
Further, the ratio of the parts by weight of described dispersion agent, flow agent, initiator, stopper, anti-settling agent, photostabilizer, antiwear assistant and acrylic acid modified polyurethane resin is 0.2 ~ 3.0:0.2 ~ 2.0:0.1 ~ 2:0.2 ~ 2.0:0.3 ~ 1.8:0.2 ~ 2.0:0.5 ~ 5.0:100.
Further, in step c, the time of ultrasonic disperse is 0.5 ~ 12h, and the rotating speed of ultrasonic disperse is 100 ~ 1000r/min, and the time of ultrasonic disperse is 0.5 ~ 24h.
Further, in step c, solidification value is 10 ~ 40 DEG C, and set time is 3 ~ 10 days.
The Advantageous Effects that the present invention brings:
The present invention proposes a kind of nano-titanium dioxide modified acrylic polyurethane finish paint and preparation method thereof, first it prepare the nano titanium dioxide powder of modification, then be grafted in acrylic polyurethane finish paint coating, thus the nano-titanium dioxide modified acrylic polyurethane finish paint after acquisition surface treatment, the finish paint that the method prepares, its paint film flexibility is more excellent; Because nano titanium oxide is to ultraviolet strong sorption, the paint film added after nano titanium oxide is strengthened to ultraviolet receptivity, substantially increases paint film ultraviolet aging resistance; Due to the interpolation of nano titanium oxide, effectively be filled with the hole strengthened in layer, the compactness of paint film is made to have arrived large increase, effectively delayed the infiltration to coat inside such as water, oxygen and chlorion, make the salt spray resistance etch of paint film, salt water resistance soak performance improved significantly.
The nano-titanium dioxide modified acrylic polyurethane finish paint that the present invention prepares, its preparation method is simple, and the facilities such as coastal building, steel bridge, petroleum and petrochemical industry pipeline and storage tank have very high using value.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, explanation clear, complete is further done to the present invention:
Fig. 1 is the gloss loss change curve of the embodiment of the present invention 1,2,3,4,5 after salt-fog test;
Fig. 2 is the gloss loss change curve of the embodiment of the present invention 1,2,3,4,5 after ultraviolet ageing test.
Embodiment
The invention discloses a kind of nano-titanium dioxide modified acrylic polyurethane finish paint and preparation method thereof, in order to make advantage of the present invention, technical scheme clearly, clearly, below in conjunction with specific embodiment, explanation clear, complete further being done to the present invention.
Raw material selected by the present invention, unless stated otherwise, all buys by commercial channel and obtains.
Embodiment 1:
The present invention, a kind of nano-titanium dioxide modified acrylic polyurethane finish paint and preparation method thereof, specifically comprises the following steps:
Step 1, the nano titanium dioxide powder of preparation modification: be that the nano titanium oxide placement of 20 nanometers is in an oven after dry 12 hours by 5g particle diameter, dissolve with a certain amount of dehydrated alcohol, and carry out under Ultrasonic Conditions 0.5 hour pre-dispersed, obtain pre-dispersed solution, γ-methacryloxypropyl trimethoxy silane the coupling agent adding 0.05g in pre-dispersed solution fully mixes, obtain mixing solutions, be 60 DEG C by mixing solutions in temperature, rotating speed is that under the condition of 800r/min, high speed dispersion carries out nano particle surface modifying, the nano titanium dioxide powder obtaining modification is dried by concentrated under 90 DEG C of conditions for modified nano-solution,
Step 2, prepare acrylated polyurethane resin: 50g acrylic acid modified polyurethane resin is carried out underpressure distillation under 60 DEG C of conditions with-0.5MPa, the object of distillation is to purify, a small amount of impurity in removing acrylic acid modified polyurethane resin, solvent is added in the acrylic acid modified polyurethane resin after underpressure distillation, solvent is vinyl acetic monomer, N-BUTYL ACETATE, toluene, dimethylbenzene, butanone, the mixing solutions of hexone and pimelinketone, wherein, vinyl acetic monomer adds 0.5g, N-BUTYL ACETATE 0.25g, toluene 0.2g, dimethylbenzene 0.4g, butanone 0.25g, hexone 0.1g and pimelinketone 0.15g, color stuffing selects iron oxide red, and addition is 2.5g, auxiliary agent is dispersion agent 0.5g, flow agent 0.5g, initiator 0.4g, stopper 0.75g, anti-settling agent 0.6g, photostabilizer 0.4g, antiwear assistant 1.5g, catalyzer is dibutyl tin laurate 0.15g, obtains acrylated polyurethane resin after abundant hybrid reaction,
Step 3, to get in 1g step 1 obtained modified nano-titanium dioxide powder and add in acrylated polyurethane resin obtained in step 2, ultrasonic disperse is carried out 0.5 hour after abundant mixing, high speed dispersion is carried out to the coating after dispersion, its rotating speed is 800r/min, jitter time is 1 hour, the vulcabond accounting for acroleic acid polyurethane weight 20% is added in the coating after dispersion, brush after mixing, be cured under the condition of 20 DEG C, dry, obtain nano-titanium dioxide modified acrylic polyurethane finish paint.
After 7 days, performance test is carried out to the nano-titanium dioxide modified acrylic polyurethane finish paint that the present embodiment prepares, has carried out salt mist experiment and ultraviolet ageing test respectively, as shown in Figure 1 and Figure 2.
Embodiment 2:
The present invention, a kind of nano-titanium dioxide modified acrylic polyurethane finish paint and preparation method thereof, specifically comprises the following steps:
Step 1, the nano titanium dioxide powder of preparation modification: be that the nano titanium oxide placement of 40 nanometers is in an oven after dry 12 hours by 5g particle diameter, dissolve with a certain amount of dehydrated alcohol, and carry out under Ultrasonic Conditions 0.5 hour pre-dispersed, obtain pre-dispersed solution, the γ-aminopropyl triethoxysilane coupling agent adding 0.10g in pre-dispersed solution fully mixes, obtain mixing solutions, be 80 DEG C by mixing solutions in temperature, rotating speed is that under the condition of 700r/min, high speed dispersion carries out nano particle surface modifying, the nano titanium dioxide powder obtaining modification is dried by concentrated under 90 DEG C of conditions for modified nano-solution,
Step 2, prepare acrylated polyurethane resin: 50g acrylic acid modified polyurethane resin is carried out underpressure distillation under 70 DEG C of conditions with-0.3MPa, the object of distillation is to purify, a small amount of impurity in removing acrylic acid modified polyurethane resin, solvent is added in the acrylic acid modified polyurethane resin after underpressure distillation, solvent is vinyl acetic monomer, N-BUTYL ACETATE, toluene, dimethylbenzene, butanone, the mixing solutions of hexone and pimelinketone, wherein, vinyl acetic monomer adds 0.5g, N-BUTYL ACETATE 0.25g, toluene 0.2g, dimethylbenzene 0.4g, butanone 0.25g, hexone 0.1g and pimelinketone 0.15g, color stuffing selects iron oxide yellow, and addition is 4g, auxiliary agent is dispersion agent 0.75g, flow agent 0.5g, initiator 0.6g, stopper 0.4g, anti-settling agent 0.75g, photostabilizer 0.4g, antiwear assistant 2.5g, catalyzer is stannous octoate 0.05g, obtains acrylated polyurethane resin after abundant hybrid reaction,
Step 3, to get in 1.5g step 1 obtained modified nano-titanium dioxide powder and add in acrylated polyurethane resin obtained in step 2, ultrasonic disperse is carried out 1 hour after abundant mixing, high speed dispersion is carried out to the coating after dispersion, its rotating speed is 800r/min, jitter time is 1 hour, the tetraisopropoxy titanium accounting for acroleic acid polyurethane weight 15% is added in the coating after dispersion, brush after mixing, be cured under the condition of 20 DEG C, dry, obtain nano-titanium dioxide modified acrylic polyurethane finish paint.
After 7 days, performance test is carried out to the nano-titanium dioxide modified acrylic polyurethane finish paint that the present embodiment prepares, has carried out salt mist experiment and ultraviolet ageing test respectively, as shown in Figure 1 and Figure 2.
Embodiment 3:
The present invention, a kind of nano-titanium dioxide modified acrylic polyurethane finish paint and preparation method thereof, specifically comprises the following steps:
Step 1, the nano titanium dioxide powder of preparation modification: be that the nano titanium oxide placement of 60 nanometers is in an oven after dry 12 hours by 5g particle diameter, dissolve with a certain amount of dehydrated alcohol, and carry out under Ultrasonic Conditions 0.5 hour pre-dispersed, obtain pre-dispersed solution, γ-methacryloxypropyl trimethoxy silane the coupling agent adding 0.05g in pre-dispersed solution fully mixes, obtain mixing solutions, be 80 DEG C by mixing solutions in temperature, rotating speed is that under the condition of 800r/min, high speed dispersion carries out nano particle surface modifying, the nano titanium dioxide powder obtaining modification is dried by concentrated under 90 DEG C of conditions for modified nano-solution,
Step 2, prepare acrylated polyurethane resin: 50g acrylic acid modified polyurethane resin is carried out underpressure distillation under 100 DEG C of conditions with-0.1MPa, the object of distillation is to purify, a small amount of impurity in removing acrylic acid modified polyurethane resin, solvent is added in the acrylic acid modified polyurethane resin after underpressure distillation, solvent is vinyl acetic monomer, N-BUTYL ACETATE, toluene, dimethylbenzene, butanone, the mixing solutions of hexone and pimelinketone, wherein, vinyl acetic monomer adds 0.5g, N-BUTYL ACETATE 0.25g, toluene 0.2g, dimethylbenzene 0.4g, butanone 0.25g, hexone 0.1g and pimelinketone 0.15g, color stuffing selects phthalocyanine green, and addition is 2.5g, auxiliary agent is dispersion agent 0.75g, flow agent 0.5g, initiator 0.5g, stopper 0.65g, anti-settling agent 0.5g, photostabilizer 0.4g, antiwear assistant 1.5g, catalyzer is dibutyl tin laurate 0.15g, obtains acrylated polyurethane resin after abundant hybrid reaction,
Step 3, to get in 1g step 1 obtained modified nano-titanium dioxide powder and add in acrylated polyurethane resin obtained in step 2, ultrasonic disperse is carried out 1 hour after abundant mixing, high speed dispersion is carried out to the coating after dispersion, its rotating speed is 800r/min, jitter time is 1 hour, the aluminium isopropoxide accounting for acroleic acid polyurethane weight 15% is added in the coating after dispersion, brush after mixing, be cured under the condition of 20 DEG C, dry, obtain nano-titanium dioxide modified acrylic polyurethane finish paint.
After 7 days, performance test is carried out to the nano-titanium dioxide modified acrylic polyurethane finish paint that the present embodiment prepares, has carried out salt mist experiment and ultraviolet ageing test respectively, as shown in Figure 1 and Figure 2.
Embodiment 4:
The present invention, a kind of nano-titanium dioxide modified acrylic polyurethane finish paint and preparation method thereof, specifically comprises the following steps:
Step 1, the nano titanium dioxide powder of preparation modification: be that the nano titanium oxide placement of 100 nanometers is in an oven after dry 12 hours by 5g particle diameter, dissolve with a certain amount of dehydrated alcohol, and carry out under Ultrasonic Conditions 0.5 hour pre-dispersed, obtain pre-dispersed solution, γ-methacryloxypropyl trimethoxy silane the coupling agent adding 0.05g in pre-dispersed solution fully mixes, obtain mixing solutions, be 80 DEG C by mixing solutions in temperature, rotating speed is that under the condition of 700r/min, high speed dispersion carries out nano particle surface modifying, the nano titanium dioxide powder obtaining modification is dried by concentrated under 90 DEG C of conditions for modified nano-solution,
Step 2, prepare acrylated polyurethane resin: 50g acrylic acid modified polyurethane resin is carried out underpressure distillation under 70 DEG C of conditions with-0.1MPa, the object of distillation is to purify, a small amount of impurity in removing acrylic acid modified polyurethane resin, solvent is added in the acrylic acid modified polyurethane resin after underpressure distillation, solvent is vinyl acetic monomer, N-BUTYL ACETATE, toluene, dimethylbenzene, butanone, the mixing solutions of hexone and pimelinketone, wherein, vinyl acetic monomer adds 0.5g, N-BUTYL ACETATE 0.25g, toluene 0.2g, dimethylbenzene 0.4g, butanone 0.25g, hexone 0.1g and pimelinketone 0.15g, color stuffing selects carbon black, and addition is 1.5g, auxiliary agent is dispersion agent 0.75g, flow agent 0.75g, initiator 0.5g, stopper 0.5g, anti-settling agent 0.5g, photostabilizer 0.4g, antiwear assistant 1.5g, catalyzer is dibutyl tin laurate 0.15g, obtains acrylated polyurethane resin after abundant hybrid reaction,
Step 3, to get in 2g step 1 obtained modified nano-titanium dioxide powder and add in acrylated polyurethane resin obtained in step 2, ultrasonic disperse is carried out 1 hour after abundant mixing, high speed dispersion is carried out to the coating after dispersion, its rotating speed is 800r/min, jitter time is 0.5 hour, the vulcabond accounting for acroleic acid polyurethane weight 20% is added in the coating after dispersion, brush after mixing, be cured under the condition of 20 DEG C, dry, obtain nano-titanium dioxide modified acrylic polyurethane finish paint.
After 7 days, performance test is carried out to the nano-titanium dioxide modified acrylic polyurethane finish paint that the present embodiment prepares, has carried out salt mist experiment and ultraviolet ageing test respectively, as shown in Figure 1 and Figure 2.
Following embodiment 5 shows a kind of not by nano-titanium dioxide modified acrylic polyurethane finish paint and preparation method thereof, as the contrast experiment of embodiment 1,2,3,4.
Embodiment 5:
A kind of acrylic polyurethane finish paint and preparation method thereof, mainly comprises the following steps:
Step 1: prepare acrylated polyurethane resin: 50g acrylic acid modified polyurethane resin is carried out underpressure distillation under 80 DEG C of conditions with-0.1MPa, the object of distillation is to purify, a small amount of impurity in removing acrylic acid modified polyurethane resin, solvent is added in the acrylic acid modified polyurethane resin after underpressure distillation, solvent is vinyl acetic monomer, N-BUTYL ACETATE, toluene, dimethylbenzene, butanone, the mixing solutions of hexone and pimelinketone, wherein, vinyl acetic monomer adds 0.5g, N-BUTYL ACETATE 0.25g, toluene 0.2g, dimethylbenzene 0.4g, butanone 0.25g, hexone 0.1g and pimelinketone 0.15g, color stuffing selects Tolylamine purple, and addition is 1.5g, auxiliary agent is dispersion agent 1.5g, flow agent 0.75g, initiator 0.5g, stopper 0.75g, anti-settling agent 0.5g, photostabilizer 0.75g, antiwear assistant 1.5g, catalyzer is stannous octoate 0.15g, obtains acrylated polyurethane resin after abundant hybrid reaction,
Step 2, in obtained acrylated polyurethane resin, add 10g vulcabond, brush after mixing, be cured at 20 DEG C, dry, obtain acrylic polyurethane finish paint.
After 7 days, performance test is carried out to the acrylic polyurethane finish paint that the present embodiment prepares, has carried out salt mist experiment and ultraviolet ageing test respectively, as shown in Figure 1 and Figure 2.
Following is acrylic polyurethane finish paint properties detected result in the embodiment of the present invention 1,2,3,4,5, as shown in table 1,
Table 1
As shown in Table 1, the nano-titanium dioxide modified acrylic polyurethane finish paint that the present invention prepares has the over-all propertieies such as good sticking power, salt spray resistance aging resistance, anti-ultraviolet ageing performance, salt water resistance improving soaking.
Claims (5)
1. a preparation method for nano-titanium dioxide modified acrylic polyurethane finish paint, is characterized in that, comprises the following steps:
A prepares the nano titanium dioxide powder of modification, the nano titanium oxide choosing certain size carries out drying, after anhydrous alcohol solution, pre-dispersed process is carried out under putting into Ultrasonic Conditions, obtain pre-dispersed solution, in pre-dispersed solution, add coupling agent fully mix, obtain mixing solutions, the add-on of described coupling agent is the 0.5%-10% of described nano titanium oxide quality, described mixing solutions is disperseed under certain temperature and speed conditions, obtain modified nanometer titanium dioxide titanium solution, described nanometer titanium dioxide titanium solution is concentrated, dry, obtain the nano titanium dioxide powder of modification,
B prepares acrylated polyurethane resin, choose a certain amount of acrylic acid modified polyurethane resin, remove a small amount of impurity by underpressure distillation, then in the acrylic acid modified polyurethane resin after distillation, add solvent, color stuffing, auxiliary agent and catalyzer successively, fully react to obtain acrylated polyurethane resin; Above-mentioned solvent is the mixing solutions of vinyl acetic monomer, N-BUTYL ACETATE, toluene, dimethylbenzene, butanone, hexone and pimelinketone, described solvent acetic acid ethyl ester: N-BUTYL ACETATE: toluene: dimethylbenzene: butanone: hexone: the weight ratio of pimelinketone is 1:0.2 ~ 0.8:0.3 ~ 0.7:0.6 ~ 1.1:0.2 ~ 0.6:0.1 ~ 0.3:0.2 ~ 0.5; Described color stuffing is the mixture of one or more in titanium dioxide, iron oxide red, iron oxide yellow, phthalocyanine green, Tolylamine purple, carbon black; Described auxiliary agent is dispersion agent, flow agent, initiator, stopper, anti-settling agent, photostabilizer and antiwear assistant; Described catalyzer is the one in dibutyl tin laurate, stannous octoate and dibutyitin maleate; Ratio 5 ~ 15:2 ~ 10:3 ~ 12:1 ~ 8:1 ~ 6:1 ~ the 5:100 of the parts by weight of described titanium dioxide, iron oxide red, iron oxide yellow, phthalocyanine green, Tolylamine purple, carbon black, acrylic acid modified polyurethane resin, described catalyzer is 0.02 ~ 0.5:100 with the ratio of the parts by weight of described acrylic acid modified polyurethane resin; The ratio of the parts by weight of described dispersion agent, flow agent, initiator, stopper, anti-settling agent, photostabilizer, antiwear assistant and acrylic acid modified polyurethane resin is 0.2 ~ 3.0:0.2 ~ 2.0:0.1 ~ 2:0.2 ~ 2.0:0.3 ~ 1.8:0.2 ~ 2.0:0.5 ~ 5.0:100;
C grafting, nano titanium dioxide powder gained modification being prepared by step a joins in the acrylated polyurethane resin of step b gained, ultrasonic disperse is carried out after abundant mixing, obtain dispersion paints, described dispersion paints is disperseed, solidifying agent is added in the coating after dispersion, brush after mixing, solidification, dry, obtain nano-titanium dioxide modified acrylic polyurethane finish paint, the nano titanium dioxide powder of described modification is 0.5 ~ 10:100 with the ratio of described acrylated polyurethane resin parts by weight, described solidifying agent is 10 ~ 20:100 with the ratio of the parts by weight of described acrylated polyurethane resin.
2. the preparation method of nano-titanium dioxide modified acrylic polyurethane finish paint according to claim 1, it is characterized in that: in step a, described coupling agent is the one in chain alkyl Trimethoxy silane, vinyltriethoxysilane, γ-aminopropyl triethoxysilane, γ-(2,3)-glycidoxy-propyltrimethoxy silane, γ-methacryloxypropyl trimethoxy silane.
3. the preparation method of nano-titanium dioxide modified acrylic polyurethane finish paint according to claim 1, it is characterized in that: in step a, described mixing solutions temperature is 20 ~ 150 DEG C, rotating speed is 100 ~ 1000r/min, jitter time is 0.5 ~ 24h, and the bake out temperature of described nanometer titanium dioxide titanium solution is 30 ~ 200 DEG C.
4. the preparation method of nano-titanium dioxide modified acrylic polyurethane finish paint according to claim 1, is characterized in that: in step c, and the rotating speed of ultrasonic disperse is 100 ~ 1000r/min, and the time of ultrasonic disperse is 0.5 ~ 24h.
5. the preparation method of nano-titanium dioxide modified acrylic polyurethane finish paint according to claim 1, is characterized in that: in step c, and solidification value is 10 ~ 40 DEG C, and set time is 3 ~ 10 days.
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| CN111440534A (en) * | 2020-03-10 | 2020-07-24 | 安徽华辉塑业科技股份有限公司 | Surface coating for building aluminum alloy template for preventing concrete adhesion and preparation method thereof |
| CN114573786A (en) * | 2022-04-02 | 2022-06-03 | 中昊北方涂料工业研究设计院有限公司 | Polyurethane resin containing inorganic ultraviolet absorber and preparation method thereof |
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| CN1186413C (en) * | 2001-10-12 | 2005-01-26 | 中国科学院金属研究所 | Nano uvioresistant polyurethane paint |
| CN1186414C (en) * | 2002-05-16 | 2005-01-26 | 复旦大学 | Preparation method of high scratch resistance nano compound polyurethane paint |
| CN102111970A (en) * | 2009-12-28 | 2011-06-29 | 深圳富泰宏精密工业有限公司 | Electronic device shell and fabrication method thereof |
| CN101838496B (en) * | 2010-04-09 | 2013-02-06 | 南京工业大学 | Super-hydrophobic polyurethane/ oxide nano particle hybrid coating material and preparation method thereof |
| CN103214906B (en) * | 2013-05-13 | 2014-12-17 | 江苏龙海建工集团有限公司 | Environment-friendly building coating and preparation method thereof |
| CN103320001A (en) * | 2013-06-24 | 2013-09-25 | 丹阳市佳美化工有限公司 | Two-component PU (Polyurethane) paint |
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