CN1242021C - Spherical fluorescent powder and preparing method thereof - Google Patents
Spherical fluorescent powder and preparing method thereof Download PDFInfo
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- CN1242021C CN1242021C CN 02157209 CN02157209A CN1242021C CN 1242021 C CN1242021 C CN 1242021C CN 02157209 CN02157209 CN 02157209 CN 02157209 A CN02157209 A CN 02157209A CN 1242021 C CN1242021 C CN 1242021C
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- fluorescence powder
- luminous storage
- storage fluorescence
- powder
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Abstract
The present invention discloses a spherical light accumulating fluorescent powder obtained by heating light accumulating fluorescent powder or the synthesis raw material of the light accumulating fluorescent powder at high temperature. Compared with the powder obtained by pulverizing the solid light accumulating fluorescent powder, the spherical light accumulating fluorescent powder has the advantages of high luminous intensity, long luminous time and good durability, and completely does not influence the processability when the spherical light accumulating fluorescent powder is added to synthetic resin.
Description
Technical field
The present invention is about spherical luminous storage fluorescence powder powder and manufacture method thereof.
Background technology
Luminous storage fluorescence powder is when being subjected to the irradiate light of daylight or other light source, can accumulate luminous energy, and is in the dark luminous for a long time, can be used for multiple purpose material.
Luminous storage fluorescence powder in the past is a sulfide entirely almost, for example uses ZnS:CuCo or CaS:Co etc.Though this luminous storage fluorescence powder can hold light, luminous, shortcoming is that fluorescent lifetime has only 1～2 hour at most, unstable chemcial property, poor durability is easily aging.So luminous power can sharply descend after tens hours under mal-condition, shortcoming is to use the life-span short.
In addition, after the sulfide luminous storage fluorescence powder adds radioactive substance,, ban use of in the world now though luminous for a long time because use radioactive substance, can produce human body radioactive rays obstacle and contaminate environment.
Having the people to propose with the aluminate of alkaline-earth metal at the nineties initial stage is the luminous storage fluorescence powder powder of main component.This class has the luminous intensity height with rare earth element Eu activated aluminate luminous storage fluorescence powder, and fluorescent lifetime can reach more than 24 hours, advantages such as chemical property is stable, photostabilization is good, long service life.Can be widely used in a lot of places.As luminescent ink, luminescent coating, noctilucence glass printing, coating and various sign and decorated articles and low strength light source etc.
But the manufacture method of the luminous storage fluorescence powder that all are above-mentioned is, made through 1200 ℃ to 1600 ℃ long-time solid state reaction by starting raw material, and resulting product is the lump of ceramic-like often, and this is because α-Al
2O
3Chemically reactive very low, only under sufficiently high temperature, could interact with the compound of other components such as alkaline-earth metal, under action of high temperature, generate the monoclinic form aluminate, and make rare-earth activated dose as Eu
2O
3Deng entering its lattice, form luminescence center and electronics deep trap.For the hard product of such alumina content height, ceramic-like,, just can not obtain tens microns powder of practical application if do not apply powerful pulverization process.But the damage that light-emitting crystal structures produces during owing to pulverizing can absorb excitation energy reduces luminosity, so can not obtain the good particulate powders of luminous intensity.
On the other hand,, during occasions such as noctilucence cloth, require this fine particle to have certain particle luminous storage fluorescence powder being applied to above-mentioned luminescent ink, luminescent coating, luminous plastics, noctilucence glass, and good dispersity.And have good dispersiveness when carrying out rapid classification, preferably use the spheric particle.But the resulting thing of comminuted solids luminous storage fluorescence powder can not carry out good dispersity, narrow particle size distribution, classification fast.
Also have when adding in the synthetic resins luminous storage fluorescence powder to injection molding; fine grain shape has a significant impact the processibility of resin; be the very injection molding machine of quick-wearing synthetic resins of the fine particle that obtains after the luminous storage fluorescence powder pulverization process of high rigidity of main component with the aluminum oxide, use the difficulty that becomes.So wait in expectation on the market a kind of good luminous storage fluorescence powder of post-treatment in the resin that adds to can be arranged.
Summary of the invention
So purpose of the present invention just provides a kind of luminous intensity height, fluorescent lifetime is long, and weather resistance is good, and particle is a spheric, adds the spherical luminous storage fluorescence powder powder that does not also reduce processibility in the synthetic resins to.
Furtherly, other purpose of the present invention provides the extremely simple method of a kind of usefulness and produces the luminous storage fluorescence powder manufacturing method of power with high-quality quality.
The method of dealing with problems
In order to achieve the above object, the present inventor has finished the present invention on the basis of studying assiduously.According to the present invention, luminous storage fluorescence powder powder or luminous storage fluorescence powder synthesis material are obtained spherical luminous storage fluorescence powder powder after by heat.It is compared with pulverizing the resulting powder of luminous storage fluorescence powder solid substance, this sphere luminous storage fluorescence powder powder luminous intensity height, fluorescent lifetime is long, and weather resistance is good, and adds to and do not influence processibility in the synthetic resins fully.
To the effect that of the present invention, be main component with the alkaline earth metal aluminosilicate, transition element such as adding rare earth element is characterized in that as the luminous storage fluorescence powder end of activator this powder is a spherical powder.
Of the present invention another to the effect that, with prior synthetic luminous storage fluorescence powder powder, or behind the synthesis material preparatory response of luminous storage fluorescence powder, resulting luminous storage fluorescence powder precursor powder allows this raw material form the spherical luminous storage fluorescence powder manufacturing method of power of globular by the heating region that exceeds more than the luminous storage fluorescence powder fusing point as raw material.
Of the present invention again one to the effect that, with what form by alkaline-earth metal and aluminosilicate in advance, behind the raw material preparatory response of synthetic luminous storage fluorescence powder, resulting luminous storage fluorescence powder precursor powder allows this raw material form the spherical luminous storage fluorescence powder manufacturing method of power of globular by the heating region that exceeds more than the luminous storage fluorescence powder fusing point as raw material.
Used luminous storage fluorescence powder among the present invention, the fine particle that obtains after can using well-known any one luminous storage fluorescence powder solid substance to pulverize, also can use well-known any one to be main component, add transition metal such as various rare earth elements hold the activator of light and luminous electronic orbit " trap " as generation well-known luminous storage fluorescence powder with alkali earth metal aluminate.
Spheric luminous storage fluorescence powder particulate size of the present invention is relatively good between 0.1～500 μ.Particle diameter can be used as transparent luminous storage material when 1 μ is following, promptly fluorescence dye uses.And for the big particle diameter more than 100 μ, can be considered as luminous storage fluorescence powder and use.When being used for the purposes such as dyestuff of offset printing luminescent ink, used in copy machines fluorescence toning agent, fiber printing and dyeing usefulness, preferably use the following thing of 3 μ.
Above-mentioned well-known luminous storage fluorescence powder by its powder is made the spheric fine particle, can improve the luminescent properties of luminous storage fluorescence powder, and workability and operability when also having improved materials such as adding synthetic resins and printing-ink to.
The manufacturing raw material of the spherical luminous storage fluorescence powder manufacture method among the present invention, it both can be the luminous storage fluorescence powder fine particle that obtains after prior synthetic luminous storage fluorescence powder solid substance is pulverized, the component raw material that also can be several necessity of luminous storage fluorescence powder is mixed, and behind the preparatory response, make the preceding precursor powder of luminous storage fluorescence powder sintering.
With top this raw material, by exceeding this heating region more than solid fusing point, the fusing back forms the spheric powder.Exceed the plasma area that the above heating region of fusing point is meant that the method for being generally acknowledged by non-parallel-moving type and parallel-moving type direct current plasma flame, ratio-frequency heating plasma body, electric-arc heating, gas burner etc. produces.
According to the composition of luminous storage fluorescence powder, heating atmosphere is adjusted into reducing atmosphere, oxidizing atmosphere or inert atmosphere, and selects solid fusing point above heating means and heated air thus.For example, can in air plasma flame, heat for the luminous storage fluorescence powder that is fit to have oxidizing atmosphere.For the luminous storage fluorescence powder that must under reducing atmosphere, carry out, the mixed gas that can use rare gas elementes such as hydrogen or argon gas and hydrogen is as plasma gas, and the carrier gases that contains reducing gass such as the raw material of making luminous storage fluorescence powder and hydrogen is blown in the plasma flame of rare gas elementes such as argon gas simultaneously.
The method of charging feed powder in the heating region more than exceeding fusing point, can raw material powder be arranged with aforesaid in carrier gases, flowing, and it is blown in the plasma flame, both hybrid-type methods, be mixed with the raw material fine particle in the plasma carrier gases being used in, and produce in the well-known plasma powder heating method such as parallel-moving type plasma method any one.
As the light storing phosphor of the luminous storage fluorescence powder of the spherical particle shape among the present invention, though any luminous storage fluorescence powder known today can utilize, use that following general expression expresses by Eu activated alkaline earth metal aluminosilicate better effects if.
(A
1-z-yD
xE
y)O·a(G
1-zH
z)
2O
3
One or more the element of A for from alkaline-earth metal Mg, Ca, Sr, Ba and divalent Metal Zn, choosing in the formula, D is activator Eu, E be coactivator rare earth element Dy, Nd, Pr, Ho, Er, Tm, Yb, Lu and transition element Ni, Mn, Zr, Nb, Ti,, one or more the element chosen among In, W and other element sb, Li, the Ge, O is an oxygen, G is female xln Al and two kinds of elements of Si, and H is more than one the element of choosing among female xln B and the Ga;
And the scope of x, y, z, a is
0.01≤x≤0.5 0.0001≤y≤0.3
0.0001≤z≤0.5 1.5≤a≤3.0
With α-Al
2O
3As the parent material in component Al source, with SrCO
3As the starting raw material in component Sr source, with SiO
2As the parent material in component Si source, with CaCO
3As the parent material in component C a source, with the parent material of MgO, with NiCO as component Mg source
3As the parent material in component Ni source, with Eu
2O
3And Dy
2O
3Starting raw material as corresponding Eu, Dy source; The mole proportioning of various materials is as follows:
SrCO
3∶Al
2O
3＝1∶0.1～1.5
MgO∶SiO
2＝1∶0.8～2.5
CaCO
3∶SiO
2＝1∶0.5～2.0
Eu
2O
3∶Dy
2O
3＝1∶1.5～3
SrCO
3∶Eu
2O
3＝1∶0.001～0.04
SrCO
3∶SiO
2＝1∶0.1～2
SrCO
3∶NiCO
3＝1∶0.001～0.1
The effect of invention
Pass through said process, the spherical aluminosilicate luminous storage fluorescence powder that makes according to the present invention, secondary processing operation when adding in synthetic resins, coating, the glass etc. when having exempted the pulverizing process that destroys ray structure and having made molding, the luminous intensity height, fluorescent lifetime is long, water tolerance is good, and moment directly forms spherical luminous storage fluorescence powder.
Description of drawings
Fig. 1 is the luminescent spectrum of the spherical aluminosilicate luminous storage fluorescence powder that made by the present invention and the graph of a relation of relative intensity.
Fig. 2 is the spherical aluminosilicate luminous storage fluorescence powder that made by the present invention and former product glorious degrees and the comparison figure of time of persistence.
Fig. 3 is the comparison diagram of the size-grade distribution of the spherical aluminosilicate luminous storage fluorescence powder that made by the present invention and former product.
Fig. 4 is the spherical aluminosilicate luminous storage fluorescence powder recovery system synoptic diagram among the present invention.
Embodiment
Embodiment 1
Press shown in the table 1, accurately take by weighing Al
2O
3, SrCO
3, SiO
2, NiCO
3, Eu
2O
3, Dy
2O
3And H
3BO
3Behind the thorough mixing in the electric furnace of 1000 ℃ or 1100 ℃ hot setting, resulting sinter is ground into the presoma that obtains luminescent powder behind the powder, with this luminous storage fluorescence powder presoma under the plasma atmosphere about 1800 ℃, spray in retrieving arrangement, moment is synthetic.Make by Eu, Dy activated, luminescent spectrum is 420～440nm, blue look luminous aluminosilicate luminous storage fluorescence powder.
The blue look luminescent ligand ratio of table 1
| Al 2O 3 | 10.5g |
| SrCO 3 | 77.1g |
| MgO | 12.0g |
| Eu 2O 3 | 1.8g |
| Dy 2O 3 | 2.3g |
| SiO 2 | 45.3g |
| NiCO 3 | 0.5g |
| H 3BO 3 | 4.1g |
Embodiment 2
By accurately taking by weighing Al shown in the table 2
2O
3, CaCO
3, SrCO
3, SiO
2, NiCO
3, Eu
2O
3, Dy
2O
3And H
3BO
3Behind the thorough mixing in the electric furnace of 1000 ℃ or 1100 ℃ hot setting, resulting sinter is ground into the presoma that obtains luminescent powder behind the powder, with this luminous storage fluorescence powder presoma under the plasma atmosphere about 1800 ℃, spray in retrieving arrangement, moment is synthetic.Make by Eu, Dy activated, luminescent spectrum is 500～520nm, green emitting aluminosilicate luminous storage fluorescence powder.
Table 2 green emitting proportioning
| Al 2O 3 | 8.7g |
| CaCO 3 | 49.5g |
| SrCO 3 | 15.1g |
| Eu 2O 3 | 1.6g |
| Dy 2O 3 | 2.0g |
| SiO 2 | 30.3g |
| NiCO 3 | 0.4g |
| H 3BO 3 | 3.3g |
Claims (5)
1, a kind of is main component with the alkaline earth metal aluminosilicate, and transition element such as adding rare earth element is characterized in that as the luminous storage fluorescence powder end of activator the general expression that spherical luminous storage fluorescence powder is formed can be expressed as:
(A
1-z-yD
xE
y)O·a(G
1-zH
z)
2O
3
One or more the element of A for from alkaline-earth metal Mg, Ca, Sr, Ba and divalent Metal Zn, choosing in the formula, D is activator Eu, E be coactivator rare earth element Dy, Nd, Pr, Ho, Er, Tm, Yb, Lu and transition element Ni, Mn, Zr, Nb, Ti,, one or more the element chosen among In, W and other element sb, Li, the Ge, O is an oxygen, G is female xln Al and two kinds of elements of Si, and H is more than one the element of choosing among female xln B and the Ga; And the scope of x, y, z, a is
0.01≤x≤0.5 0.0001≤y≤0.3
0.0001≤z≤0.5 1.5≤a≤3.0。
2, luminous storage fluorescence powder according to claim 1 end is characterized in that with α-Al
2O
3As the parent material in component Al source, with SrCO
3As the starting raw material in component Sr source, with SiO
2As the parent material in component Si source, with CaCO
3As the parent material in component C a source, with the parent material of MgO, with NiCO as component Mg source
3As the parent material in component Ni source, with Eu
2O
3And Dy
2O
3Starting raw material as corresponding Eu, Dy source: the mole proportioning of various materials is as follows:
SrCO
3∶Al
2O
3＝1∶0.1～1.5
MgO∶SiO
2＝1∶0.8～2.5
CaCO
3∶SiO
2＝1∶0.5～2.0
Eu
2O
3∶Dy
2O
3＝1∶1.5～3
SrCO
3∶Eu
2O
3＝1∶0.001～0.04
SrCO
3∶SiO
2＝1∶0.1～2.0
SrCO
3∶NiCO
3＝1∶0.001～0.1。
3, the manufacture method at luminous storage fluorescence powder according to claim 1 end, it is characterized in that prior synthetic luminous storage fluorescence powder powder, or behind the synthesis material preparatory response of luminous storage fluorescence powder, resulting luminous storage fluorescence powder precursor powder allows this raw material form the spherical luminous storage fluorescence powder powder of globular by plasma area as raw material.
4, the manufacture method at luminous storage fluorescence powder according to claim 1 end, after it is characterized in that raw material preparatory response that will form by alkaline-earth metal and aluminosilicate in advance, synthetic luminous storage fluorescence powder, resulting luminous storage fluorescence powder precursor powder allows this raw material form the spherical luminous storage fluorescence powder of globular end by plasma area as raw material.
5,, it is characterized in that plasma area is the plasma area that is produced by the direct current plasma flame of non-parallel-moving type and parallel-moving type, ratio-frequency heating plasma body, electric-arc heating according to the manufacture method at claim 3 or 4 described luminous storage fluorescence powder ends.
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|---|---|---|---|
| CN 02157209 CN1242021C (en) | 2002-12-23 | 2002-12-23 | Spherical fluorescent powder and preparing method thereof |
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|---|---|---|---|
| CN 02157209 CN1242021C (en) | 2002-12-23 | 2002-12-23 | Spherical fluorescent powder and preparing method thereof |
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|---|---|
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| CN1242021C true CN1242021C (en) | 2006-02-15 |
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| CN105670603B (en) * | 2014-11-20 | 2018-01-02 | 中国科学院化学研究所 | A kind of High Efficiency Luminescence microballoon and its preparation method and application |
| CN113651531B (en) * | 2021-09-22 | 2022-11-22 | 烟台希尔德材料科技有限公司 | Second phase glass reinforced phosphor compound and preparation method and composition thereof |
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Effective date of registration: 20080711 Address after: Room 50, No. 301, Luling District, Wuxi, Jiangsu Patentee after: Chen Ping Address before: Jiangsu province Wuxi City Golden Road No. 2008 Guangnan Road Patentee before: Pakesi Decorative Products Co., Ltd., Wuxi City |
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