Luminescent paint

FIELD: chemistry.

SUBSTANCE: luminescent paint for treating surfaces of objects contains a film-forming component in a mixture of organic solvents, photoluminescent phosphor and filler. The photoluminescent phosphor used is strontium aluminate, activated europium, dysprosium and yttrium. The film-forming component is a 15% solution of chlorinated polyvinylchloride (CPVC), taken in the ratio 1:1.3-2. The CPVC is made from a mixture of solvents, containing butyl acetate, acetone and toluene in ratio of 1:2:5 respectively.

EFFECT: luminescent paint for treating surfaces of various indicators, especially road signs, the coating of which should have high resistance to long fluorescent lag.

4 cl, 2 tbl

 

The invention relates to coatings industry and can be used for coating in Autonomous systems for emergency lighting and alarm systems, evacuation, fire, warning, pointing and other svetoznamych, safety signs in the various premises, airports, roads, Parking lots, etc.

Known printed phosphor ink containing the following components, parts: pigment - 100-125; phosphor - 380-400; a mixture of polycondensates rosin with maleic anhydride and phthalic anhydride with pentaerythritol with polymerized linseed oil - 360-390; oil fraction with TKip=350-380° - 25-45; solution of pentaerythritol ether malaysiaand rosin in a mixture of linseed and transformer oils - 15-25; solution of phenol formaldehyde resin in linseed oil - 10-20; polyethylene - 20-30; naphthenate-cobalt drier - 10-20 (SU 852921).

The disadvantages of this paint are low intensity and short time of luminescence under the influence of electromagnetic radiation (EMR) in the wavelength range of 0.3-0,76 ám.

Known water-dispersible fluorescent fluorescent paint containing film-forming, fluorescent pigment, a thickener, a dispersant and water, in which the film-forming used 50%stimulationa dispersion, as will sagashite the I - acrylic thickener, pigment, fluorescent pigment-based thermoplastic melamineformaldehyde resin as a dispersant - 30%aqueous solution of ammonium salts of polyacrylic acids and hydrophobic siliconsamurai the non and additionally ultraviolet absorbent - derived dihydroxybenzophenone, 30% of which is from the prescription of the quantities injected into the film-forming, and the remaining 70% - in the mix (EN 2218375, CL C09D 5/22, 10.12.2003,).

The disadvantage of this paint is the complexity of its preparation and the presence of a large number of components, in particular the need to introduce ultraviolet sorbent to increase its light and weather resistance.

Known printing ink containing a luminescent material and a polymer binder, as the phosphor used aluminosilicate strontium-calcium empirical formula SrCa2[2(Al2O3Si4)], activated by europium and neodymium, in the following ratio of components, wt.%: the aluminosilicate strontium-calcium - 30-70; europium - 0,3-3,7; neodymium - 25-70; polymer binder - 25-70 (EN 2179565, CL C09D 5/22, 20.02.2002,).

The paint has a high initial brightness and long afterglow, however, it has low viability. The viscosity of the chamfer significantly increased within 2-3 days, making it impossible for her to use the equipment.

Similar to the proposed composition of the fluorescent paint is a paint brand AK-583 (TU 6-21-11-011-337-97), which contains as the film-forming component 15%solution of a copolymer of butyl methacrylate and methacrylic acid (BMC-5) in a mixture of organic solvents consisting of butanol, butyl acetate, toluene and ethanol in the ratio 2:5:2:1 respectively, photoluminous based on zinc sulfide activated with copper (brand PV-540-1) in the following ratio, wt.%:

the BMC solution-5 (15%) - 68,06

photoluminous (PV-540-1) - of 10.21

Aerosil - 1,02

light tinuvin - 0,20

γ-aminopropyltriethoxysilane - 0,05

organic solvent - 20,46

Paint is characterized by high initial brightness and afterglow, but the duration of the afterglow is very small.

The closest in composition of the proposed fluorescent paint, its prototype is based paint AK-587-based coating agent is a copolymer of butyl methacrylate and methacrylic acid (BMC-5). The copolymer BMC-5 is used in the form of a 15%solution in a mixture of organic solvents consisting of butanol, butyl acetate, toluene and ethanol in the ratio 2:5:2:1 respectively. As a phosphor paint AK-587 contains photoluminous-strontium aluminate activated by europium, dysprosium, yttrium next time with the compared components in wt.%:

the copolymer BMC-5 (15% solution) - 56,66

Aerosil - 0,85

photoluminous - 42,49 (Tu 6-21-11-023-337-97)

This paint does not have sufficient intensity of luminescence when exposed to ultraviolet and visible radiation (0.3 to 0,76 µm) and the duration of afterglow.

The technical problem to be solved in the present invention is to provide a luminescent colors, with high resistance coating on the kick and the ability to reflect light, but also to store it for the day and then illuminate throughout the night.

Technical result achieved when implementing this invention is to allow the use of fluorescent paint this composition for advertising and warning needs with the increased strength of the coating, and long afterglow.

This technical result is achieved due to the proposed ratio of the components of a fluorescent ink containing a film-forming component chlorinated polyvinyl chloride (PSC-HP) in an organic solvent, photoluminous on the basis of strontium aluminate activated with europium, dysprosium and yttrium, filler, in which photoluminous and film-forming component is present in a ratio of 1:1.3 to 2, respectively, in the following ratio, wt.%:

film-forming component42,0-56,0
photoluminous21,0-39,0
filler0,7-2,1
organic solventrest

As a film-forming component of the composition of the proposed fluorescent paint contains 15%solution of chlorinated polyvinyl chloride (PSC-HP) in a mixture of organic solvents consisting of butyl acetate, acetone and toluene, taken in the ratio 1:2:5, respectively. Unlike the prototype for preparation of a solution film-forming component - resin PSC-LS uses a mixture of solvents without ethanol.

As photoluminous applied photoluminous on the basis of strontium aluminate activated with europium, dysprosium and yttrium (phosphor brand LDP).

An example of obtaining a luminescent colors.

Manufacturer of paint is carried out in a vessel with an outboard microhotel mixer type mill with a speed of about 900-1200./min (dissolver). In the dissolver download part pre-prepared resin solution PSC-PP, prescription number of Aerosil, photoluminous and stirred until homogeneous (about 15-20 min). Then when the stirrer download the rest of the 15%solution of the resin PSC-LS and again dispersed the contents of the dissolver is homogeneous for another 10-15 minutes.

The willingness of the paint is determined by the loading on the glass. If the paint contains quite a number of fresh pieces of photoluminous and Aerosil, dispersing continue for another 10-15 minutes. Extremely high dispersion of luminescent paint on the level of 20-30 μm on the "wedge" helps to ensure good ink capacity and very low paint consumption per unit of surface.

Get paint in the form of dispersion is applied to products paint sprayer or a brush.

Table 1 shows the formulation of the proposed fluorescent paint, investigated with the aim of choosing the optimal ratios of the main components to ensure they can obtain the claimed technical effect (strength of the coating and long-lasting afterglow).

The intensity of luminescence was determined visually in the dark. With this purpose, the painted plate was placed in an electric incandescent light bulb 100 watts (excitation source) and held for 10 minutes After which the light bulb was switched off, and the plate was placed in a dark room. The relative brightness of the afterglow was determined by comparison with a valid reference sample, tried and tested and certified in the prescribed manner. The measurements were carried out by aramara FPC-1 in accordance with the instructions on the device ispytatelei the th laboratory of material science Department of the FSUE "Sri tree". The results are given in table 2.

The compositions in examples 1-3 correspond to the claimed composition and have a high initial brightness and long afterglow, high paint-technical and operational characteristics. The composition according to example 4 is composed of a greater number of film-forming component in comparison with the proposed structure, which is caused by insufficient initial brightness and afterglow.

The composition according to example 5 in the presence of photoluminous more than 38 wt.% and when the lower limit of the film-forming component gives a brittle coating peeled from the substrate during application.

Data show the results of the tests are given in table 2, the proposed fluorescent paint at the selected ratio of the main components, in which 1 part of photoluminous varies from 1.3 to 2 parts of film-forming component, differs from the prototype in strength to the punch and brightness of the afterglow.

This allows the use of fluorescent paint the claimed composition for surface treatment products, including various directions, especially road signs, coatings which must have high resistance to shock and to light up at night due to the accumulation of swedenergy in the daytime.

Table 1

Examples of formulations of paints
Name of the componentComposition, wt.% examples
12345
Chlorinated polyvinyl chloride42,048,056,060,042,0
Photoluminous21,038,039,021,042,0
Filler0,71,12,10,70,7
Organic solvent36,3012,92,918,315,3
Total:100,0100,0100,0100,0100,0
Table 2

Name of indicatorExamples of compositions according to table 1Paint AK-587 (prototype)
12345
1. Viscosity by viscometer VZ-246 with the nozzle diameter of 4 mm at a temperature of (20,0±0,5)°s30-5030-5030-5030-5030-5015-45
2. Mass fraction of solids of paint, %47±347±347±347±347±324±2
3. Drying time to degree 3 at a temperature of (20±2)°, h222222
4. The relative brightness and afterglow. The ratio of the initial brightness of the sample of paint to the brightness of the reference sample after 5 min, %10010010090100-
5. The relative brightness of the afterglow time interval, %,
0.25 h100100100100100-
1,0 h10010010010010010
12 hours100100100100100-
6. The adhesion of the coating, points, no more111122
7. The strength of the coating when hitting the device Y-1, cm505050504040
8. The degree of milling, mcm2020202020 40
9. The elasticity of the film bending, mm111133

1. Fluorescent paint containing film-forming component chlorinated polyvinyl chloride (PSC-HP) in an organic solvent, photoluminous on the basis of strontium aluminate activated with europium, dysprosium and yttrium, filler, in which photoluminous and film-forming component is present in a ratio of 1:1.3 to 2, respectively, in the following ratio, wt.%:

film-forming component42,0÷56,0
photoluminous21,0÷39,0
filler0,7÷2,1
organic solventrest

2. Fluorescent dye according to claim 1, which, as a film-forming component contains 15%solution of chlorinated polyvinyl chloride (PSC-HP) in a mixture of organic solvents.

3. Fluorescent dye according to claim 1, in which the organic solvent is a mixture of organic solvents butyl acetate, acetone and toluene at a ratio of 1:2:5, respectively.

4. Fluorescent is the film according to claim 1 for surface treatment products, including various directions, especially road signs, coatings which must have high resistance to shock and long afterglow.



 

Same patents:

FIELD: electronic engineering, applicable in production of gas-discharge indicating panels.

SUBSTANCE: use is made of pastes, in the production of process of which the filler powder is mixed and ground in and organic solvent taken in amounts respectively 1.5 to 245 percent by mass and 75 to 98.5 percent by mass. To improve the paste quality, the filler powder and organic solvent mix is agitated with addition of balls, 2 to 5 mm in diameter, taken in amounts of 60 to 100 percent of the mix mass,, for preparation of the paste use is also made of am organic binder heated to 45-65 C.

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3 cl, 3 ex

FIELD: highway engineering; highways structures and markings.

SUBSTANCE: the invention is pertaining to the field of highway engineering, mainly, to highways structures and markings, in particular, to photoluminescent material for the highways marking and to the highway structure. The invention presents the new photoluminescent material used for marking the highways traffic lanes. The photoluminescent material for the traffic lanes marking is made in the form of the paste containing: from 7 up to 95 mass % of the transparent polymeric component selected from the group consisting of the methacrylic acrylic component, the component of the type of non-saturated polyester, the epoxy component and the component of the silicone type, the photoluminescent colorant component with the average diameter of particles from 10 up to 2000 microns selected from the group composed of the material of the type of strontium aluminate and the material of the zinc sulfide type, and including at least one additional colorant component with the average diameter of the particles from 0.1 up to 40 microns selected from the group consisting of the white colorant, the yellow colorant and the orange or red colorant. At that the ratio of the mass of the photoluminescent colorant component and the mass of the additional colorant components makes of no more than 3.0. The invention also describes the highway structure containing the indicated photoluminescent material. The offered photoluminescent material for the traffic lanes marking possesses the required wear-resistance and resistance to the atmospheric effects, and also obtains the effective photoluminescence and may be used not only for the white lines, but also for the lines of various colors, and the covered with it lines are not slidable.

EFFECT: the invention ensures, that offered photoluminescent material for the traffic lanes marking is wear-resistant, resistant to the atmospheric effects, has the effective photoluminescence, may be used for making the white lines and the various colors lines and such lines are not slidable.

16 cl, 9 tbl, 13 ex

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Printing ink // 2179565
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2 tbl, 1 ex

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4 tbl, 3 ex

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2 tbl, 6 ex

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3 cl, 4 ex, 2 tbl

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3 cl, 4 ex, 2 tbl

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2 tbl, 6 ex

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2 ex

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4 tbl, 3 ex

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