A kind of luminous paint and preparation method thereof
Technical field
The invention belongs to coating composition, particularly luminous paint preparation of compositions technical field based on inorganic substance.
Background technology
The energy-saving luminous material that is applied to coatings industry at present mainly contains two classes, and promptly zinc sulphide ZnS is luminescent material and rare earth-activated luminous alkali earth metal aluminate luminescent material
iTypical case's representative of zinc sulphide matrix energy-saving luminous material is copper and cobalt activated zinc sulphide, is pale yellow powder.Zinc sulphide is luminescent material, is considered to a kind of long after glow luminous material always, and is applied to many fields.But this material twilight sunset can only continue 1~2 hour, does not have enough brightness in many application scenarios, and apt to deteriorate behind contact ultraviolet ray or the oxygen.Sometimes in order often to add radioelement such as deuterium and promethium pm-147 the time of persistence that prolongs luminous paint, cause the radiocontamination of environment, so this material system is eliminated by market gradually.Rare earth-activated luminous alkali earth metal aluminate luminescent material is meant with rare earth and particularly is active element, is a class luminescent material of matrix with the alkali earth metal aluminate with europium Eu.Wherein europium Eu and the coactivated strontium aluminate of dysprosium Dy are typical case's representatives, and it is a class advanced luminescent material that grows up early 1990s.Be characterized in initial brightness height, time of persistence, length can reach more than 10 hours, and "dead", heat-resisting, anti-environmental attack, antioxidant property are good, are called as the green energy conservation material.In luminous alkali earth metal aluminate luminescent material, along with the ratio of strontium oxide and alumina content is different, the wavelength of fluorescence is also different with time of persistence.By changing the content of strontium oxide and alumina species, the doping of europium Eu and dysprosium Dy and partly or entirely replace strontium oxide SrO with calcium oxide CaO, magnesium oxide MgO, barium oxide BaO etc., or compound adding etc., can obtain a series of initial luminous intensities rare earth-activated luminous alkali earth metal aluminate luminescent material different with time of persistence.Because this type of luminescent material has the incomparable advantage of other luminescent materials up to now, so the long-afterglow energy-accumulating luminous paint of developing with this type of luminescent material was just obtaining promoting in solvent fortune, traffic and fire-fighting domain in recent years
Ii, iii
Long-afterglow luminescent paint is one of high-tech functional materials of high speed development in the world, this coating is made luminous pigment, organic resin or resin, organic solvent or solvent, inorganic face, filler, auxiliary agent etc. according to a certain percentage, can under radiation of visible light such as sunlight or light, absorb and store luminous energy, at the dark place energy that the absorbs form with visible light is discharged lentamente then, fluorescent lifetime is sustainable more than 10 hours.The long-afterglow energy-accumulating luminescent material just develops towards improving luminous intensity and time of persistence, firm and durable, eco-friendly direction at present.The research of China's energy-accumulating luminous paint is later, but development is very fast, and the application of each side all is in the exploratory stage, and the research that nano material is applied in the luminous paint is exactly the important topic that the insider pays close attention to.Nanoparticle is owing to have special propertys such as surface effects, small-size effect, macro quanta tunnel effect, after using it in the coating, optical property, magnetic property, electrical property, the mechanical property of coating are greatly enhanced or show new function, can improve the class and the market competitiveness of products such as automobile, building materials, instrument, boats and ships, aircraft greatly, thereby also having caused macromolecular material and coating worker's great interest, the nano paint product all has appearance on the market at home and abroad.The class of product and the market competitiveness, thereby also caused macromolecular material and coating worker's great interest
Iv
CN1740242 provides in " a kind of nanometer modified long-afterglow energy-accumulating luminous paint ", once discloses to utilize nano titanium oxide to be entrained in the technology that can improve the coating luminescent properties in the luminous paint.Yet owing to be to be entrained in the luminous paint with nano titanium oxide, although can improve luminous intensity and time of persistence, its stability and luminous power also need further to improve when particularly using in water.
Summary of the invention
Purpose of the present invention just provides a kind of simple, novel nano titanium oxide that utilizes and coats the hair long luminescent material, have the nano titanium oxide that long-persistence luminous effect and hair long optical efficiency improve greatly and coat luminescent material, and contain above-mentioned nano titanium oxide coat luminescent material, effectively improve the luminous paint and preparation method thereof of hair long optical efficiency.
Technical solution of the present invention is that the preparation that luminous paint is provided is to be undertaken by long-persistence luminous powdered material and two steps of luminous paint composition that the nano titanium oxide coating is handled.
(1) nano titanium oxide coats the preparation of the long-persistence luminous powdered material of handling: raw material and weight percent proportioning thereof by following kind are made:
Fluorocarbon resin 5.00~20.00
Organic solvent 10.00~50.00
Dispersion agent 0.01~5.00
Nano titanium oxide 0.20~6.00
Luminescent material powder 40.00~60.00
Wherein: described nano titanium oxide is one or both the mixture in anatase titanium dioxide, rutile-type or sharp titanium and the rutile mixed crystal type;
Described luminescent material is one or more mixtures in silicate luminescent material, aluminate luminescent material, the aluminosilicate luminescent material, and median size is the 5-65 micron, is preferably the 25-60 micron;
Described fluorocarbon resin is a kind of in trifluorochloroethylene multiple copolymer, the tetrafluoroethylene multiple copolymer;
Described dispersion agent is an aniorfic surfactant, as in Sodium hexametaphosphate 99, the Sodium dodecylbenzene sulfonate etc. one or more;
Described organic solvent is one or more mixtures in dimethylbenzene, isopropylcarbinol, propylene glycol, propylene glycol monomethyl ether, butyl glycol ether, 1-Methoxy-2-propyl acetate, the N-BUTYL ACETATE.
Prepare the method that nano titanium oxide coats luminescent material, comprise the steps:
(1) fluorocarbon resin, organic solvent, dispersion agent, nano titanium oxide, luminescent material powder middling speed (500~800 rev/mins) in dispersion cup was disperseed 30~60 minutes;
(2) 60~80 ℃ of oven dry down, grinding makes.
(2) contain the luminous paint preparation of compositions method that nano titanium oxide coats luminescent material: raw material and weight percent proportioning thereof by following kind are made:
Filmogen 25~50%:
Nano titanium oxide coats the luminescent material of handling 5~50%;
Solvent 0~30%:
White filler 0~50%
Auxiliary agent 0~30%
Wherein: described filmogen is one or more in fluorocarbon resin, fluorine third resin, Resins, epoxy, urethane resin, the acrylic resin, and every kind of resin demand is 0~100% of a filmogen total amount;
Described solvent is one or more the mixture in dimethylbenzene, isopropylcarbinol, propylene glycol, propylene glycol monomethyl ether, butyl glycol ether, 1-Methoxy-2-propyl acetate, the N-BUTYL ACETATE etc., and every kind of solvent load is 0~100% of a solvent total amount;
Described white filler is one or more in titanium dioxide, talcum powder, the lime carbonate, and every kind of amount of filler is 0~100% of a filler total amount;
Described auxiliary agent is at least a in dispersion agent, defoamer, flow agent, the film coalescence aid.
Wherein, available auxiliary agent is respectively:
Dispersion agent: 903,904S, 926 (the modest company of moral); BYK161 (German BYK company), one or more in Sodium hexametaphosphate 99, the Sodium dodecylbenzene sulfonate etc., every kind of dispersant dosage is 0~100% of a dispersion agent total amount;
Defoamer: BYK066,141 (German BYK company), one or more in 2700,5600 (the modest companies of moral) etc., every kind of defoamer consumption is 0~100% of a defoamer total amount;
Flow agent: BYK358,390 (German BYK company); 433, one or more in 495 (modest companies of moral) etc., every kind of flow agent consumption is 0~100% of a flow agent total amount;
The luminous paint preparation of compositions method that contains nano titanium oxide coating luminescent material comprises following processing step:
(1) by preset ratio solvent, film-forming resin, filler, other auxiliary agents and nano-titanium oxide are coated the luminous pigment of handling and join in the dispersion machine material-compound tank middling speed (500~800 rev/mins) dispersed with stirring 30~60 minutes successively;
(2) luminous paint that gets product after filtering.
Beneficial effect and benefit that the present invention reached be, adopts technique scheme, and the nano titanium oxide that the present invention proposes coats luminous paint, can adopt methods constructions such as brushing, spraying or roller coating, stirs evenly before the use, and useable solvents is regulated viscosity.Film thickness reaches the above coating that just can form uniformly light-emitting of 80 μ m.The luminous paint of application same thickness on the priming paint of different colours, best with the luminescent coating effect on the whitewash, therefore, reduce the luminous paint consumption, preferably the precoating white primer for reducing cost.Compared with prior art, beneficial effect performance of the present invention is that the luminous paint that adopts the technology of the present invention to prepare can significantly improve the luminous intensity of luminous paint, hair long luminous energy power than the luminous paint that adopts the luminescent material preparation that coats without nano titanium oxide improves 3 times, particularly in certain depth water and seawater after the illumination its hair long light intensity reach in air after the illumination 8~10 of the hair long light intensity times.
Think that the reason that the steady persistence hair long optical property of technical solution of the present invention luminescent material and luminous paint improves greatly is, exists the trap level of different depths relevant in the luminescent material.During ultraviolet excitation, there is the trap level of certain energy degree of depth to catch the electronics of sufficient amount, and stores from excited state.After UV-light stops to excite, be stored in the electronics of trap level, under the thermal perturbation of room temperature, little by little be released out, the electronics that discharges transits to excited state again, and electronics produces long-persistence luminous when excited state is returned ground state.Nano titanium oxide belongs to the nanometer semiconductor compounds particle, because its semiconductor property, under UV-irradiation, electronics is excited, by valence band to the conduction band transition, thereby UV-light is produced the strong sorption of broadband.Enough hour of the particle diameter of nanoparticle can be luminous under the optical excitation of certain wavelength.Nano-titania particle through fluorocarbon resin and dispersion agent modification coats the luminescent material particle, its electronics-hole coulomb interaction strengthens, exciton binding energy and oscillator strength are increased, dielectric effect increases, cause the transition of electron process in luminescent material and the nano titanium oxide to be mutually promoted, make steady persistence hair long optical property improve greatly.
The fluorocarbon resin steady chemical structure has excellent fast light radiation and ageing-resistant performance, and nano titanium oxide therefore of the present invention coats luminescent material good solvent stability, can obtain the luminous paint of shelf-stable.This luminous paint all has good adhesion at substrate surfaces such as cement, iron, aluminium alloy, timber, glass, PVC plastics, paint film is water-fast, alkaline-resisting, good weatherability, the luminosity height, time of persistence is long, aspects such as escape way, mine tunnel, traffic sign, fire control equipment, electric switch both can be widely used in, as the emergency identification under the unregulated power lighting condition, also can be used for light-emitting workmanship.Be specially adapted to indicate traffic route sign under water with the area of heavy rainfull.
Embodiment
The present invention is further described below in conjunction with embodiment.
Embodiment 1:
(1) adds fluorocarbon resin 200g, organic solvent 250g, Sodium hexametaphosphate 99 2g, P25 type nano titanium oxide 8g, PLO-7C-B type luminescent material 540g by preset ratio, middling speed (650 rev/mins) dispersed with stirring 30 minutes makes nano-titanium oxide and coats the luminous pigment predispersion of handling;
(2) nano-titanium oxide is coated the luminous pigment predispersion of handling and dry down, make nano-titanium oxide after the grinding and coat the luminous pigment of handling at 60 ℃;
(3) by preset ratio solvent, film-forming resin, filler, other auxiliary agents and nano-titanium oxide are coated the luminous pigment of handling and join in the dispersion machine material-compound tank middling speed (650 rev/mins) dispersed with stirring 45 minutes successively.Luminous paint gets product after 80 mesh filter screens filter.
ZB2002 fluorocarbon resin (Dalian shake nation) 50g
Nano titanium oxide coats luminescent material 30g
Titanium dioxide (color stuffing) 18g
BYK161 (dispersion agent) 1g
Moral modest 903 (dispersion agent) 0.3g
BYK066 (defoamer) 0.3g
BYK358 (flow agent) 0.4g
HR-969 titanium dioxide (color stuffing) 25.5g
BYK141 (defoamer) 0.2g
BYK390 (flow agent) 0.3g
Embodiment 2:
(1) adds fluorocarbon resin 190g, organic solvent 200g, Sodium hexametaphosphate 99 2g, homemade nanometer anatase titania 8g, SB-8C type luminescent material 600g by preset ratio, middling speed (800 rev/mins) dispersed with stirring 20 minutes makes nano-titanium oxide and coats the luminous pigment predispersion of handling;
(2) nano-titanium oxide is coated the luminous pigment predispersion of handling and dry down, make nano-titanium oxide after the grinding and coat the luminous pigment of handling at 80 ℃;
(3) by preset ratio solvent, film-forming resin, filler, other auxiliary agents and nano-titanium oxide are coated the luminous pigment of handling and join in the dispersion machine material-compound tank middling speed (500 rev/mins) dispersed with stirring 30 minutes successively.Luminous paint gets product after 100 mesh filter screens filter.
618 Resins, epoxy 50g
Coat luminous pigment 30g
Talcum powder (800#, Dalian section profit) 10g
Dimethylbenzene 7g
Moral modest 495 (flow agent) 1.4g
Moral modest 926 (dispersion agent) 1.2g
Moral modest 2700 (defoamer) 0.2g
Embodiment 3:
(1) adds fluorocarbon resin 190g, organic solvent 200g, Sodium dodecylbenzene sulfonate 4g, homemade nanometer anatase titania 6g, SP-4 type luminescent material 600g by preset ratio, middling speed (600 rev/mins) dispersed with stirring 40 minutes makes nano-titanium oxide and coats the luminous pigment predispersion of handling;
(2) nano-titanium oxide is coated the luminous pigment predispersion of handling and dry down, make nano-titanium oxide after the grinding and coat the luminous pigment of handling at 70 ℃;
(3) by preset ratio solvent, film-forming resin, filler, other auxiliary agents and nano-titanium oxide are coated the luminous pigment of handling and join in the dispersion machine material-compound tank middling speed (600 rev/mins) dispersed with stirring 30 minutes successively.Luminous paint gets product after 150 mesh filter screens filter.
Acrylic resin M-133 42g
Solvent 26g
Luminescenjt powder 30g
Sodium hexametaphosphate 99 (dispersion agent) 2g
Embodiment 4:
(1) adds fluorocarbon resin 190g, organic solvent 200g, Sodium hexametaphosphate 99 4g, P25 type nano titanium oxide 6g, SP-4 type luminescent material 300g, PLO-7C-B type luminescent material 300g by preset ratio, middling speed (800 rev/mins) dispersed with stirring 40 minutes makes nano-titanium oxide and coats the luminous pigment predispersion of handling;
(2) nano-titanium oxide is coated the luminous pigment predispersion of handling and dry down, make nano-titanium oxide after the grinding and coat the luminous pigment of handling at 65 ℃;
(3) by preset ratio solvent, film-forming resin, filler, other auxiliary agents and nano-titanium oxide are coated the luminous pigment of handling and join in the dispersion machine material-compound tank middling speed (800 rev/mins) dispersed with stirring 30 minutes successively.Luminous paint gets product after 120 mesh filter screens filter.
Urethane resin 25g
Luminescenjt powder 25g
R-501 rutile titanium white 14g
Coarse whiting (800#) 10g
Dimethylbenzene 24.6g
The modest 904S of moral (wetting dispersing agent) 0.8g
Moral modest 5600 (defoamer) 0.2g
Moral modest 433 (flow agent) 0.4g
Comparative Examples 1~4:
It is identical with the foregoing description 1~4 prescription that Comparative Examples luminous paint prescription adopts, and difference is that luminescent material is the commercial luminescent material that does not adopt nano titanium oxide to coat.
Experiment one: coating hair long phototesting: each embodiment and Comparative Examples luminous paint are evenly coated on 5 50mm * 50mm * 1.5mm sheet glass that scribble white primer, and seasoning was tested in airtight good darkroom after 7 days.During test, the coating sample is lain in the illumination box, close radiation source behind the illumination certain hour.Adopt the hair long illuminance of photometer measurement test luminescent coating at regular intervals, unit is the lux.
Test result:
Relative hair long illuminance in table 1 air
Example |
Embodiment 1/ Comparative Examples 1 |
Embodiment 2/ Comparative Examples 2 |
Embodiment 3/ Comparative Examples 3 |
Embodiment 4/ Comparative Examples 4 |
Relative hair long illuminance |
2.76 |
1.92 |
2.46 |
2.22 |
Experiment two: coating hair long phototesting: each embodiment and Comparative Examples luminous paint are evenly coated on 5 50mm * 50mm * 1.5mm sheet glass that scribble white primer, and seasoning was tested in airtight good darkroom after 7 days.During test, the sample that is immersed in the 1000ml beaker that fills 200ml deionization solvent is lain in the illumination box, close radiation source behind the illumination certain hour.Adopt the hair long illuminance of photometer measurement test luminescent coating at regular intervals, unit is the lux.
Test result:
Relative hair long illuminance in table 2 water
Example |
Embodiment 1/ Comparative Examples 1 |
Embodiment 2/ Comparative Examples 2 |
Embodiment 3/ Comparative Examples 3 |
Embodiment 4/ Comparative Examples 4 |
Relative hair long illuminance |
7.61 |
5.37 |
7.28 |
6.72 |
Experiment three: coating hair long phototesting: each embodiment and Comparative Examples luminous paint are evenly coated on 5 50mm * 50mm * 1.5mm sheet glass that scribble white primer, and seasoning was tested in airtight good darkroom after 7 days.During test, the sample that is immersed in the 1000ml beaker that fills the 400ml natural sea-water is lain in the illumination box, close radiation source behind the illumination certain hour.Adopt the hair long illuminance of photometer measurement test luminescent coating at regular intervals, unit is the lux.
Test result:
Relative hair long illuminance in table 3 seawater
Example |
Embodiment 1/ Comparative Examples 1 |
Embodiment 2/ Comparative Examples 2 |
Embodiment 3/ Comparative Examples 3 |
Embodiment 4/ Comparative Examples 4 |
Relative hair long illuminance |
22.66 |
15.36 |
20.13 |
17.05 |
Table 4 Comparative Examples is the relative hair long illuminance after the illumination in seawater and air
Example |
Comparative Examples 1 |
Comparative Examples 2 |
Comparative Examples 3 |
Comparative Examples 4 |
Relative hair long illuminance |
0.61 |
0.43 |
0.55 |
0.47 |
Table 5 embodiment is the relative hair long illuminance after the illumination in seawater and air
Example |
Embodiment 1 |
Embodiment 2 |
Embodiment 3 |
Embodiment 4 |
Relative hair long illuminance |
8.16 |
9.74 |
7.85 |
8.49 |