Lamp powder generating ultraviolet rays B as well as preparation method and application thereof
A technology of ultraviolet light and lamp powder, applied in chemical instruments and methods, lighting and heating equipment, components of lighting devices, etc., can solve the problems of shortened lifespan of ultraviolet light, large light decay of phosphor powder, and great hidden dangers of the environment and people and other problems, to achieve the effect of long service life, high brightness and long service life
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Embodiment 1
[0061] This embodiment relates to a preparation method of lamp powder that produces medium-wave ultraviolet rays. The preparation method is based on strontium carbonate (SrCO 3 ), strontium chloride (SrCl 2 ), magnesium oxide (MgO), boric acid (H 3 BO 3 ), aluminum oxide (Al 2 O3), lead oxide (PbO) and rare earth metal oxides are mixed and fired at a high temperature in solid phase to obtain the lamp powder for producing medium-wave ultraviolet rays.
[0062] The rare earth metal oxides include one of actinide oxides and lanthanide oxides.
[0063] The lanthanide oxides include lanthanum oxide (La 2 o 3 ), gadolinium oxide (Gd 2 o 3 ) and samarium oxide (Sm 2 o 3 ).
[0064] The concrete steps of described preparation method preparation are:
[0065] Step 1, raw material processing: raw material strontium carbonate (SrCO 3 ), strontium chloride (SrCl 2 ), magnesium oxide (MgO), boric acid (H 3 BO 3 ), aluminum oxide (Al 2 o 3 ), any one of lead oxide (PbO) and...
Embodiment 2
[0075] The preparation method of the present embodiment is basically the same as that of Example 1, except that:
[0076] The raw materials to be weighed are: 4.2g (0.03mol) of strontium carbonate, 1.7g (0.01mol) of strontium chloride, 0.4g (0.01mol) of magnesium oxide, 12.4g (0.2mol) of boric acid, and 0.515g of aluminum oxide (0.005mol), lead oxide 0.335g (0.002mol) and lanthanum oxide 0.40g (0.001mol).
[0077] The chemical formula of the prepared lamp powder producing medium-wave ultraviolet rays is: (B 2 o 3 ) 2 ·(Al 2 o 3 ) 0.1 (Mg,Sr)O 0.87 Cl 0.4 :0.04Pb 2+ 0.02La 3+ .
[0078] The spectrum of the prepared lamp powder measured by an ultraviolet analyzer is a band spectrum, the peak value is λ=297nm, and the measured relative intensity is stronger than that of phosphate activated by calcium zinc thallium and gadolinium.
Embodiment 3
[0080] The preparation method of the present embodiment is basically the same as that of Example 1, except that:
[0081] The raw materials to be weighed are: 8.86g (0.06mol) of strontium carbonate, 3.2g (0.02mol) of strontium chloride, 0.8g (0.02mol) of magnesium oxide, 24.8g (0.4mol) of boric acid, and 1.03g of aluminum oxide (0.01mol), lead oxide 0.67g (0.003mol) and lanthanum oxide 0.81g (0.005mol).
[0082] The chemical formula of the prepared lamp powder producing medium-wave ultraviolet rays is: (B 2 o 3 ) 2 ·(Al 2 o 3 ) 0.1 (Mg,Sr)O 0.905 Cl 0.2 :0.03Pb 2+ 0.05La 3+ .
[0083] The spectrum of the prepared lamp powder measured by an ultraviolet analyzer is a band spectrum, the peak value is λ=297nm, and the measured relative intensity is stronger than that of phosphate activated by calcium zinc thallium and gadolinium.
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