CN104017489A - Nano-TiO2 modified acrylic polyurethane finish paint and preparation method thereof - Google Patents
Nano-TiO2 modified acrylic polyurethane finish paint and preparation method thereof Download PDFInfo
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- CN104017489A CN104017489A CN201410231760.3A CN201410231760A CN104017489A CN 104017489 A CN104017489 A CN 104017489A CN 201410231760 A CN201410231760 A CN 201410231760A CN 104017489 A CN104017489 A CN 104017489A
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Abstract
The invention discloses a preparation method of nano-TiO2 modified acrylic polyurethane finish paint, and belongs to the technical field of nanometer technology and corrosion protection technology. The preparation method helps to solve the problems that acrylic polyurethane finish paint in the prior art is bad in salt-spray ageing resistance and salt-water immersion resistance and the like. The preparation method comprises: firstly adding a coupling agent into a titanium dioxide solution, performing high-speed dispersion, and performing concentration and the like, so as to obtain a modified nanometer titanium dioxide powder; successively adding a solvent, a color filler, an auxiliary agent and a catalyst into acrylic-modified polyurethane resin, and fully reacting to obtain acrylic polyurethane resin; and finally adding the modified nanometer titanium dioxide powder into the acrylic polyurethane resin to performing a grafting reaction, curing and drying to obtain the nano-TiO2 modified acrylic polyurethane finish paint. The prepared finish paint is simple in preparation method, and has extremely high application value on facilities such as coastal buildings, steel bridges, petroleum petrochemical pipelines and storage tanks, and the like.
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 recent years development 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 is fast, just can surface drying about about half hour.But this finish paint, in the neutral meeting of the environment variation of high-temperature, high humidity, easily loss of gloss, variable color and easily foaming, is extremely not suitable for using in some coastlands, at present often by the antiseptic property that improves 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, cohesive strength of coating, water-fast, resistance to solvent; The organic-silicon-modified oxidation-resistance of coating and the hydrophobicity of can making gets a promotion; The nano inorganic material-modified nanometer SiO that comprises
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 in 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 materials, 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 has a large amount of-OH can with acroleic acid polyurethane macromolecular chain on-OH forms hydrogen bond or dehydration forms Ti-O-C chemical bond, has greatly improved the antiseptic property of Acrylic Polyurethane Coating.And nano-TiO
2uV-light is had to good sorption, along with nano-TiO
2interpolation, coating ultraviolet aging resistance performance can obtain corresponding lifting.Acroleic acid polyurethane/nano-TiO
2that composite membrane combines that Acrylic Polyurethane Coating has is 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 matter having, makes the site size between organic phase and inorganic phase reach nanometer scale, thereby shows the performance of many excellences.Both possessed the well processed use properties of macromolecular material, possessed again the new function characteristics such as optical, electrical, the magnetic that inorganic nano material is good.
In sum, for three kinds of method of modifying of 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
2research at modified acrylic polyurethane finish paint after surface treatment rarely has report especially.
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, thereby 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 good 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 of choosing certain size is dried, after dissolving, put into and under Ultrasonic Conditions, carry out pre-dispersed processing, obtain pre-dispersed solution, in pre-dispersed solution, add coupling agent fully to 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 the nanometer titanium dioxide titanium solution after modification, 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 to distillation after acrylic acid modified polyurethane resin in add successively solvent, color stuffing, auxiliary agent and catalyzer, 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 vinyl acetic monomer: N-BUTYL ACETATE: toluene: dimethylbenzene: butanone: hexone: the ratio of the weight part 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, the nano titanium dioxide powder of being prepared by step a to gained modification joins in the acrylated polyurethane resin of step b gained, after fully mixing, carry out ultrasonic dispersion, obtain dispersion paints, described dispersion paints is disperseed, in the coating after disperseing, add solidifying agent, after mixing, brush, solidify, be dried, 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 that 20～150 DEG C, rotating speed are 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 one or more the mixture 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 toxilic acid dibutyl tin; 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 dispersion is 0.5～12h, and the rotating speed of ultrasonic dispersion is 100～1000r/min, and the time of ultrasonic dispersion is 0.5～24h.
Further, in step c, solidification value is 10～40 DEG C, and be 3～10 days set time.
The useful technique effect 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, thereby 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 better; Because nano titanium oxide is to ultraviolet strong sorption, the paint film adding after nano titanium oxide is strengthened to ultraviolet receptivity, has greatly improved paint film ultraviolet aging resistance; Due to the interpolation of nano titanium oxide, effectively fill the hole strengthening in figure layer, make the compactness of paint film arrive large increase, effectively delay the infiltration to coating inside such as water, oxygen and chlorion, the salt spray resistance etch of paint film, the performance that salt water resistance soaks are improved significantly.
The nano-titanium dioxide modified acrylic polyurethane finish paint that the present invention prepares, its preparation method is simple, on the facilities such as coastal building, steel bridge, petroleum and petrochemical industry pipeline and storage tank, has very high using value.
Brief description of the drawings
Below in conjunction with accompanying drawing, the present invention is done to further clear, complete explanation:
Fig. 1 is the loss of gloss rate change curve of the embodiment of the present invention 1,2,3,4,5 after salt-fog test;
Fig. 2 is the loss of gloss rate 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 clearer, clear and definite, below in conjunction with specific embodiment, the present invention is done to further clear, complete explanation.
The selected raw material of the present invention, unless stated otherwise, all can be bought and be obtained by commercial channel.
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: the nano titanium oxide that is 20 nanometers by 5g particle diameter is placed in baking oven dry after 12 hours, dissolve with a certain amount of dehydrated alcohol, and under Ultrasonic Conditions, carry out 0.5 hour pre-dispersed, obtain pre-dispersed solution, in pre-dispersed solution, add γ-methacryloxypropyl trimethoxy silane coupling agent of 0.05g fully to mix, 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 is carried out nano particle surface modifying, by the concentrated nano titanium dioxide powder that obtains modification of drying under 90 DEG C of conditions of the nano-solution after modification,
Step 2, prepare acrylated polyurethane resin: by 50g acrylic acid modified polyurethane resin 60 DEG C and-carry out underpressure distillation under the condition of 0.5MPa, the object of distillation is in order to purify, remove a small amount of impurity in acrylic acid modified polyurethane resin, in the acrylic acid modified polyurethane resin after underpressure distillation, add solvent, 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 is selected 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, fully after hybrid reaction, obtains acrylated polyurethane resin,
Step 3, get the modified nano-titanium dioxide powder making in 1g step 1 and add in the acrylated polyurethane resin making in step 2, after fully mixing, carry out ultrasonic dispersion 0.5 hour, coating after disperseing is carried out to high speed dispersion, its rotating speed is 800r/min, jitter time is 1 hour, to disperse after coating in add the vulcabond that accounts for acroleic acid polyurethane weight 20%, after mixing, brush, under the condition of 20 DEG C, be cured, be dried, obtain nano-titanium dioxide modified acrylic polyurethane finish paint.
The nano-titanium dioxide modified acrylic polyurethane finish paint that the present embodiment is prepared carries out performance test after 7 days, carried out respectively salt mist experiment and ultraviolet ageing test, 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: the nano titanium oxide that is 40 nanometers by 5g particle diameter is placed in baking oven dry after 12 hours, dissolve with a certain amount of dehydrated alcohol, and under Ultrasonic Conditions, carry out 0.5 hour pre-dispersed, obtain pre-dispersed solution, in pre-dispersed solution, add the γ-aminopropyl triethoxysilane coupling agent of 0.10g fully to mix, 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 is carried out nano particle surface modifying, by the concentrated nano titanium dioxide powder that obtains modification of drying under 90 DEG C of conditions of the nano-solution after modification,
Step 2, prepare acrylated polyurethane resin: by 50g acrylic acid modified polyurethane resin 70 DEG C and-carry out underpressure distillation under the condition of 0.3MPa, the object of distillation is in order to purify, remove a small amount of impurity in acrylic acid modified polyurethane resin, in the acrylic acid modified polyurethane resin after underpressure distillation, add solvent, 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 is selected 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, fully after hybrid reaction, obtains acrylated polyurethane resin,
Step 3, get the modified nano-titanium dioxide powder making in 1.5g step 1 and add in the acrylated polyurethane resin making in step 2, after fully mixing, carry out ultrasonic dispersion 1 hour, coating after disperseing is carried out to high speed dispersion, its rotating speed is 800r/min, jitter time is 1 hour, to disperse after coating in add the tetraisopropoxy titanium that accounts for acroleic acid polyurethane weight 15%, after mixing, brush, under the condition of 20 DEG C, be cured, be dried, obtain nano-titanium dioxide modified acrylic polyurethane finish paint.
The nano-titanium dioxide modified acrylic polyurethane finish paint that the present embodiment is prepared carries out performance test after 7 days, carried out respectively salt mist experiment and ultraviolet ageing test, 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: the nano titanium oxide that is 60 nanometers by 5g particle diameter is placed in baking oven dry after 12 hours, dissolve with a certain amount of dehydrated alcohol, and under Ultrasonic Conditions, carry out 0.5 hour pre-dispersed, obtain pre-dispersed solution, in pre-dispersed solution, add γ-methacryloxypropyl trimethoxy silane coupling agent of 0.05g fully to mix, 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 is carried out nano particle surface modifying, by the concentrated nano titanium dioxide powder that obtains modification of drying under 90 DEG C of conditions of the nano-solution after modification,
Step 2, prepare acrylated polyurethane resin: by 50g acrylic acid modified polyurethane resin 100 DEG C and-carry out underpressure distillation under the condition of 0.1MPa, the object of distillation is in order to purify, remove a small amount of impurity in acrylic acid modified polyurethane resin, in the acrylic acid modified polyurethane resin after underpressure distillation, add solvent, 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 is selected 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, fully after hybrid reaction, obtains acrylated polyurethane resin,
Step 3, get the modified nano-titanium dioxide powder making in 1g step 1 and add in the acrylated polyurethane resin making in step 2, after fully mixing, carry out ultrasonic dispersion 1 hour, coating after disperseing is carried out to high speed dispersion, its rotating speed is 800r/min, jitter time is 1 hour, to disperse after coating in add the aluminium isopropoxide that accounts for acroleic acid polyurethane weight 15%, after mixing, brush, under the condition of 20 DEG C, be cured, be dried, obtain nano-titanium dioxide modified acrylic polyurethane finish paint.
The nano-titanium dioxide modified acrylic polyurethane finish paint that the present embodiment is prepared carries out performance test after 7 days, carried out respectively salt mist experiment and ultraviolet ageing test, 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: the nano titanium oxide that is 100 nanometers by 5g particle diameter is placed in baking oven dry after 12 hours, dissolve with a certain amount of dehydrated alcohol, and under Ultrasonic Conditions, carry out 0.5 hour pre-dispersed, obtain pre-dispersed solution, in pre-dispersed solution, add γ-methacryloxypropyl trimethoxy silane coupling agent of 0.05g fully to mix, 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 is carried out nano particle surface modifying, by the concentrated nano titanium dioxide powder that obtains modification of drying under 90 DEG C of conditions of the nano-solution after modification,
Step 2, prepare acrylated polyurethane resin: by 50g acrylic acid modified polyurethane resin 70 DEG C and-carry out underpressure distillation under the condition of 0.1MPa, the object of distillation is in order to purify, remove a small amount of impurity in acrylic acid modified polyurethane resin, in the acrylic acid modified polyurethane resin after underpressure distillation, add solvent, 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 is selected 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, fully after hybrid reaction, obtains acrylated polyurethane resin,
Step 3, get the modified nano-titanium dioxide powder making in 2g step 1 and add in the acrylated polyurethane resin making in step 2, after fully mixing, carry out ultrasonic dispersion 1 hour, coating after disperseing is carried out to high speed dispersion, its rotating speed is 800r/min, jitter time is 0.5 hour, to disperse after coating in add the vulcabond that accounts for acroleic acid polyurethane weight 20%, after mixing, brush, under the condition of 20 DEG C, be cured, be dried, obtain nano-titanium dioxide modified acrylic polyurethane finish paint.
The nano-titanium dioxide modified acrylic polyurethane finish paint that the present embodiment is prepared carries out performance test after 7 days, carried out respectively salt mist experiment and ultraviolet ageing test, 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: by 50g acrylic acid modified polyurethane resin 80 DEG C and-carry out underpressure distillation under the condition of 0.1MPa, the object of distillation is in order to purify, remove a small amount of impurity in acrylic acid modified polyurethane resin, in the acrylic acid modified polyurethane resin after underpressure distillation, add solvent, 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 is selected 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, fully after hybrid reaction, obtains acrylated polyurethane resin,
Step 2, in the acrylated polyurethane resin making, add 10g vulcabond, after mixing, brush, at 20 DEG C, be cured, dry, obtain acrylic polyurethane finish paint.
The acrylic polyurethane finish paint that the present embodiment is prepared carries out performance test after 7 days, carried out respectively salt mist experiment and ultraviolet ageing test, 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, ultraviolet aging resistance performance, salt water resistance improving soaking.
Claims (8)
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 of choosing certain size is dried, after dissolving, put into and under Ultrasonic Conditions, carry out pre-dispersed processing, obtain pre-dispersed solution, in pre-dispersed solution, add coupling agent fully to 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 the nanometer titanium dioxide titanium solution after modification, 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 to distillation after acrylic acid modified polyurethane resin in add successively solvent, color stuffing, auxiliary agent and catalyzer, 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 vinyl acetic monomer: N-BUTYL ACETATE: toluene: dimethylbenzene: butanone: hexone: the ratio of the weight part 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, the nano titanium dioxide powder of being prepared by step a to gained modification joins in the acrylated polyurethane resin of step b gained, after fully mixing, carry out ultrasonic dispersion, obtain dispersion paints, described dispersion paints is disperseed, in the coating after disperseing, add solidifying agent, after mixing, brush, solidify, be dried, obtain nano-titanium dioxide modified acrylic polyurethane finish paint.
2. the preparation method of nano-titanium dioxide modified acrylic polyurethane finish paint according to claim 1, it is characterized in that: 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.
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 coupling agent is the one in chain alkyl Trimethoxy silane, vinyltriethoxysilane, γ-aminopropyl triethoxysilane, γ-(2,3)-glycidoxy-propyltrimethoxy silane, γ-methacryloxypropyl trimethoxy silane.
4. 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 that 20～150 DEG C, rotating speed are 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.
5. the preparation method of nano-titanium dioxide modified acrylic polyurethane finish paint according to claim 1, it is characterized in that: in step b, described color stuffing is one or more the mixture 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 toxilic acid dibutyl tin; 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.
6. the preparation method of nano-titanium dioxide modified acrylic polyurethane finish paint according to claim 5, is characterized in that: 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.
7. the preparation method of nano-titanium dioxide modified acrylic polyurethane finish paint according to claim 1, it is characterized in that: in step c, the time of ultrasonic dispersion is 0.5～12h, and the rotating speed of ultrasonic dispersion is 100～1000r/min, and the time of ultrasonic dispersion is 0.5～24h.
8. the preparation method of nano-titanium dioxide modified acrylic polyurethane finish paint according to claim 1, is characterized in that: in step c, solidification value is 10～40 DEG C, and be 3～10 days set time.
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| CN105802316A (en) * | 2014-12-31 | 2016-07-27 | 江苏考普乐新材料有限公司 | Fluorocarbon varnish and preparation method thereof |
| CN109468058A (en) * | 2018-09-30 | 2019-03-15 | 浙江凌志新材料有限公司 | A kind of weather-proof cracking resistance organosilicon fireproof coating of ultrathin type |
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| CN105802316A (en) * | 2014-12-31 | 2016-07-27 | 江苏考普乐新材料有限公司 | Fluorocarbon varnish and preparation method thereof |
| CN105802316B (en) * | 2014-12-31 | 2018-06-22 | 江苏考普乐新材料有限公司 | A kind of fluorocarbon varnish and preparation method thereof |
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| CN109468058A (en) * | 2018-09-30 | 2019-03-15 | 浙江凌志新材料有限公司 | A kind of weather-proof cracking resistance organosilicon fireproof coating of ultrathin type |
| CN109468058B (en) * | 2018-09-30 | 2020-12-29 | 浙江凌志新材料有限公司 | Ultrathin weather-resistant anti-cracking organic silicon fireproof coating |
| CN109824846A (en) * | 2019-01-07 | 2019-05-31 | 江苏大学 | The preparation method and its uvioresistant application of titanium dioxide modified polyurethane performed polymer |
| CN110003788A (en) * | 2019-03-28 | 2019-07-12 | 广东绿色大地化工有限公司 | A kind of weather-proof finishing coat of aqueous one-component nano modification self-cross linking type |
| CN110194943A (en) * | 2019-06-20 | 2019-09-03 | 苏州金枪新材料股份有限公司 | Uvioresistant acrylic acid modified polyurethane adhesive resistant to high temperature and preparation method thereof |
| 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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