CN102181195A - Green luminous coating - Google Patents
Green luminous coating Download PDFInfo
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- CN102181195A CN102181195A CN2011101437125A CN201110143712A CN102181195A CN 102181195 A CN102181195 A CN 102181195A CN 2011101437125 A CN2011101437125 A CN 2011101437125A CN 201110143712 A CN201110143712 A CN 201110143712A CN 102181195 A CN102181195 A CN 102181195A
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Abstract
The invention discloses a green luminous coating which comprises a substrate coating and a luminous material. The chemical formula of the luminous material is 10CaO.3Si2O7.Cl2:aEu<2+>, wherein the atomic ratio a is 0.001-1; the substrate coating is a coating through which nanometer light with the wavelength of less than 460 nanometers can pass; the mass percentage of the luminous material is 3-70 percent; and the mass percentage of the substrate coating is 30-97 percent. The luminous material, i.e., 10CaO.3Si2O7.Cl2:aEu<2+> which is sensitive at the temperature of 50-300 K is adopted; the temperature of 50-300 K can be reflected accurately according to the linear relation between the green light emitting intensity of the luminous material along with the temperature and the temperature; and the green luminous coating can be applied to phosphorescent light temperature measurement in the temperature range of 50-300 K.
Description
Technical field
The present invention relates to a kind of green emitting coating, be used for the non-contact testing temperature, belong to the luminous paint technical field.
Background technology
At aerospace field, along with the development of high-speed aircraft, aerothermodynamics is facing a series of urgency aerodynamic heat transfer problem to be solved.Such as, shock wave and boundary layer mutual interference separating and swirl flow of causing mutually; Turbulence structure; Supersonic velocity/hypersonic flow characteristics around thrust; Three-dimensional separated flow of the big angle of attack or the like.In Engineering Thermophysics thermal conduction study field, the research of the heat transfer phenomenon in enhancement of heat transfer, jet cooling technology, the complex construction etc. has run into some complex heat transfer problems too.To the research of these complicated phenomenons, need comprehensive understanding be arranged to heat exchanging process, grasp a large amount of careful heat transfer information datas.Traditional calorimetric means as thermopair, plunger heat flowmeter, film heat flowmeter, zero point calorimeter, water card etc., can only be obtained certain any information.Simultaneously, because the restriction of measuring method, these measurement means all are difficult to the complicated zone of model structure is measured, such as, near wing body combining site, the thrust root etc.Therefore traditional point measurement means more and more can not adapt to the requirement of new heat transfer research.Therefore, press for a kind of measurement of full field technology of development, solve the complex heat transfer problem that faces in these subject researchs.
Along with the develop rapidly of contemporary high technology, especially computer technology, modern age optical technology, numerical information and image processing techniques fast development, for the measurement of full field technology provides opportunity.In the last few years, especially in the temperature survey field, various planar survey technology all occurred in succession, as: thermal infrared imager, temperature sensitive coating (TSP), phosphorescence thermal map etc.Phase angle influence is bigger in the TSP measuring process, and Infrared survey depends on the spectral property and the envrionment temperature of slin emissivity, object.Then there are not these problems in the phosphorescent substance thermometric, also has more distinctive advantages:
1, belongs to contactless measurement.This is the common characteristics of all planar survey technology.Phosphorescent substance is sprayed at the rete that model surface probably forms 15-25 μ m, can not change the geometric shape of model, also can not produce disturbing influence by stream field;
2, the cycle of model manufacturing experiment and data processing all than short and relatively inexpensive, can be made the complex configuration model rapidly;
3, use single pictures record model surface thermal map, the cycle of experiment and data processing all will be lacked and be relatively inexpensive;
4, can with a plurality of thermal imagery system integrations, portable, removable, do not need loaded down with trivial details adjustment and demarcation after moving.
The phosphorescence thermometry is to be studied by Eastman Kodak in the later stage in the 1940's the earliest, obtains develop rapidly recent years abroad.This technology is to be based upon on the linear basis of the luminous and temperature variation of luminescent material.Especially big of Nottingham, GBR-Te Lun was once developed and can have been used 1200 ℃ phosphorescence tempil in 1998.The ORNL laboratory of tennessee,USA (man of rubber mountain country laboratory) has been developed dynamic high temperature phosphorescence thermo-mapping technique, Millisecond time of response.NASA Glenn center was reported in 2003, can survey surface temperature with the high temperature phosphorescent coating and reach 1500 ℃～1700 ℃, had done the test of rocket nozzle thermometric.
Then be surface temperature and the thermal conduction measurement that phosphorescence thermal imagery technology is used for impulse wind tunnel McDonnell company the first time.This is to carry out in the hotshot wind tunnel that is 50 milliseconds of magnitudes a working time.It is 5 milliseconds shock tunnel only that Cornell aeronautical laboratory (CAL) is applied to working time to this technology, and has obtained comparatively ideal results.Though hypersonic commentaries on classics is twisted and obtained some progress in theory in the last few years, yet in the design of practical flight device, still depend on semi-empirical approach.But development and integrated application thereof that the full surface heat flow that CFD and phosphorescence calorimetric technology are carried out is measured make in precision very big improvement has been arranged, and have reduced the analysis required time greatly.
The phosphorescence thermometry thermometric temperature respective regions that uses is higher at present, and is just sensitive on 373K.But in actual use often according to the phosphorescent coating of different condition needs in the interval sensitivity of differing temps, thermally sensitive coating during as low temperature.
Summary of the invention
Technology of the present invention is dealt with problems and is: overcome the deficiencies in the prior art, provide a kind of transmitting green light, in 50K to the 300K interval thermally sensitive phosphorescence thermopaint.
Technical solution of the present invention is: a kind of green emitting coating, comprise matrix coating and luminescent material, and the luminescent material chemical formula is 10CaO.3Si
2O
7.Cl
2: aEu
2+, the scope of atomic ratio a value is 0.001～1, and matrix coating is to see through the coating of wavelength less than 460 nanometer light, and the mass percent of luminescent material is 3～70%, and the mass percent of matrix coating is 30～97%.
Described matrix coating is organosilicon system, polyacrylic acid system, epoxy-resin systems, polyester system, aminoresin system, Synolac system or phenolic resin system.
The scope of the atomic ratio a value of described luminescent material is 0.01～0.5, and the mass percent of luminescent material is 30～60%, and the mass percent of matrix coating is 70～40%.
A kind of green emitting coating is used for the phosphorescence thermometric in 50K to the 300K temperature range.
The present invention compared with prior art beneficial effect is:
(1) the present invention adopts luminescent material 10CaO.3Si
2O
7.Cl
2: aEu
2+This luminescent material 50K is interior to temperature sensitive to the 300K temperature range, the intensity and the temperature that vary with temperature the luminescent material transmitting green light are the line style relation, can reflect 50K accurately to the interior temperature of 300K temperature range, can be used for 50K to the interior phosphorescence thermometric of 300K temperature range;
(2) to adopt the scope of the atomic ratio a value of luminescent material be 0.01～0.5 in the present invention, the mass percent of luminescent material is 30～60%, the mass percent of matrix coating is 70～40% o'clock, luminous intensity is faster, more responsive with variation of temperature, help reducing thermometric error, improve temperature measurement accuracy;
(3) temperature of green emitting coating energy measurement lower temperature range object of the present invention, method is simple, and is good in economic efficiency.
Description of drawings
Fig. 1 is the embodiment of the invention 4 luminescent spectrum figure under the differing temps when the ultraviolet lamp that is 365 nanometers excites with emission wavelength;
Fig. 2 is the temperature variant linear relationship chart of the embodiment of the invention 1,4,6 luminous (450nm-650nm) spectrum integral intensity;
Fig. 3 is the embodiment of the invention 1 luminescent spectrum figure under the differing temps when the ultraviolet lamp that is 365 nanometers excites with emission wavelength;
Fig. 4 is the embodiment of the invention 6 luminescent spectrum figure under the differing temps when the ultraviolet lamp that is 365 nanometers excites with emission wavelength.
Embodiment
Matrix coating of the present invention and luminescent material are formed, and the luminescent material chemical formula is 10CaO.3Si
2O
7.Cl
2: aEu
2+The emission peak of luminescent material is the green glow of 515 nanometers, the scope of atomic ratio a value is 0.001～1, matrix coating is to see through the coating of wavelength less than 460 nanometer light, and matrix coating is organosilicon system, polyacrylic acid system, epoxy-resin systems, polyester system, aminoresin system, Synolac system or phenolic resin system.The mass percent of luminescent material is 3～70%, and the mass percent of matrix coating is 30～97%.To cross when low coating luminous not strong when luminescent material content; Influence the coating quality of coating during the luminescent material too high levels, also cause the waste of material simultaneously.
By discovering that divalent europium can activated 10CaO.3Si
2O
7.Cl
2, obtain a kind of luminescent material of green.Green luminescent material is tested in a large number and discovers that the change of luminous intensity of this luminescent material and temperature claim the line style relation.For this kind luminescent material, not appearing in the newspapers is used for temperature measurement technology.For this type of luminescent material can be used for thermometry, the present invention is by the correlation properties curve of the luminous and temperature of this class luminescent material of research, discovery is in 50K to 300K temperature range, 450 in the 650nm wavelength region, emitting characteristics is a basically identical with the variation of temperature rule, and temperature high luminous intensity more diminishes more.According to this character, utilize the green emitting coating of this class luminescent material preparation can be used for object local measurement and body surface measurement in 50K to the 300K temperature range.Coating is in use used the exciting light of wavelength less than 460 nanometers, makes its stimulated luminescence.
Below in conjunction with specific examples the present invention is described, but not as limit.
Specific embodiment is as shown in the table:
Be example brief description preparation process of the present invention once with embodiment 4 only, the preparation process principle of all the other embodiment is identical.
(1) adopts traditional high temperature solid-state method to prepare chemical formula to be: 10CaO.3Si
2O
7.Cl
2: aEu
2+(a=0.1) luminescent material.
Raw material is the carbonate, oxalate, nitrate etc. that can generate calcium oxide after calcium oxide or the heating; Silicon-dioxide, ammonium chloride can generate the material of europiumsesquioxide in europiumsesquioxide or the building-up process.By the stoichiometric ratio raw materials weighing, grind behind the mixing with raw material in reducing atmosphere in 900～1500 ℃ of calcination 1-20h, the cooling of coming out of the stove promptly obtains green luminescent material 10CaO.3Si
2O
7.Cl
2: 0.1Eu
2+
(2) with blocky red illuminating material 10CaO.3Si
2O
7.Cl
2: 0.1Eu
2+After the jaw crusher coarse crushing, become fine powder by ball mill grinding again, cross 250 mesh sieves, wash the back in 200 degrees centigrade of oven dry through washing, dehydrated alcohol.
(3) with the 10CaO.3Si of drying
2O
7.Cl
2: 0.1Eu
2+Powder is 30% by the luminescent material mass percent, and the mass percent of adding is in 70% the polyacrylic resin, stirs at least 30 minutes with high speed agitator, makes uniform green emitting coating.
(4) with spray gun with the paint spay-coating that is worth on product surface, form luminous thermometric coating after the seasoning.Excite down at 365 nanometer ultraviolet lamps, record under the 50K～300K differing temps of embodiment 4 coatings luminescent spectrum figure as shown in Figure 1, as can be seen from Figure 1: excite down the green glow that the main emission wavelength of this coating is 515 nanometers at 365 nanometer ultraviolet lamps; The luminous intensity of this coating descends along with the increase of temperature.Fig. 2 has illustrated that the luminous intensity of present embodiment becomes line style to concern with temperature at 50K in the 300K scope, as can be seen from Figure 2, the luminous intensity of embodiment 4 is faster than embodiment 1,6 with variation of temperature, more responsive, the sensitivity that 4 pairs of temperature variation of embodiment are described is better than embodiment 1,6, help reducing thermometric error, improve temperature measurement accuracy.The scope of atomic ratio a value is 0.01～05, the mass percent of luminescent material is 30～60%, the mass percent of matrix coating is 70～40%, it is similar to Example 4 that coating spectrogram and spectrum integral intensity vary with temperature figure, the kind of matrix coating is little to the influence that coating spectrogram and spectrum integral intensity vary with temperature figure, can ignore, down together.
Fig. 3,4 is the luminescent spectrum figure under the differing temps of embodiment 1 and embodiment 6 coatings, it is similar to Example 1 that atomic ratio varies with temperature figure in the spectrogram of 0.001 order of magnitude and spectrum integral intensity, and it is similar to Example 6 that atomic ratio varies with temperature figure in 0.6～1 spectrogram and spectrum integral intensity.
Atomic ratio constant (in 0.01～0.5 scope), the luminescent material mass percent is when 30～60% change, and luminescent material is many more, and the luminous intensity of coating is high more, but the temperature variant influence of spectrum integral intensity is very little, shows that the slope of Fig. 2 cathetus does not change.
The unspecified part of the present invention belongs to general knowledge as well known to those skilled in the art.
Claims (4)
1. green emitting coating, it is characterized in that: comprise matrix coating and luminescent material, the luminescent material chemical formula is 10CaO.3Si
2O
7.Cl
2: aEu
2+, the scope of atomic ratio a value is 0.001～1, and matrix coating is to see through the coating of wavelength less than 460 nanometer light, and the mass percent of luminescent material is 3～70%, and the mass percent of matrix coating is 30～97%.
2. a kind of green emitting coating according to claim 1 is characterized in that: described matrix coating is organosilicon system, polyacrylic acid system, epoxy-resin systems, polyester system, aminoresin system, Synolac system or phenolic resin system.
3. a kind of green emitting coating according to claim 1 is characterized in that: the scope of the atomic ratio a value of described luminescent material is 0.01～0.5, and the mass percent of luminescent material is 30～60%, and the mass percent of matrix coating is 70～40%.
4. a green emitting coating is used for the phosphorescence thermometric in 50K to the 300K temperature range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101437125A CN102181195A (en) | 2011-05-31 | 2011-05-31 | Green luminous coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101437125A CN102181195A (en) | 2011-05-31 | 2011-05-31 | Green luminous coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102181195A true CN102181195A (en) | 2011-09-14 |
Family
ID=44567490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101437125A Pending CN102181195A (en) | 2011-05-31 | 2011-05-31 | Green luminous coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102181195A (en) |
-
2011
- 2011-05-31 CN CN2011101437125A patent/CN102181195A/en active Pending
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Application publication date: 20110914 |