Difunctional light conversion master batches and preparation method thereof
A technology of bifunctional light-converting agent and light-converting masterbatch, which is applied in the fields of botanical equipment and methods, chemical instruments and methods, luminescent materials, etc., can solve the problems of little blue light, difficult light-converting agent, and inability to synchronize the life of the film. , to achieve the effect of good spectral matching, reducing dust pollution and prolonging service life
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Example Embodiment
[0043] Example 1
[0044] (1) Synthetic Ca of dual-function light conversion agent 0.7 Ba 0.3 F 2 :Eu
[0045] Weigh Ca(NO 3 ) 2 ·4H 2 O(14.8Kg), Ba(NO 3 ) 2 (5Kg), Eu 2 O 3 (17.00g), NH 4 F(11.5Kg), HNO 3 (25ml).
[0046] a. Use HNO first 3 Dissolve Eu 2 O 3 , Add Ca(NO 3 ) 2 ·4H 2 O and Ba(NO 3 ) 2 Prepare 0.25mol / L solution A;
[0047] Prepare 1mol / L NH 4 F solution B.
[0048] b. Under stirring conditions, add solution A dropwise to solution B, continue stirring for 1 hour, centrifuge and dry at 100°C. The SEM morphological characteristics of the precursor after drying are as attached figure 1 As shown, the actual object is a white block.
[0049] c. Add 0.5% of the weight of the precipitate to CaF to the precipitate after drying 2 After grinding, calcine at 1200°C for 2 hours under CO reducing atmosphere, and gradually cool down to obtain the sample. The SEM morphology of the sample is as attached figure 2 As shown, the actual substance is a white powder.
[0050] (2) Production o...
Example Embodiment
[0052] Example 2
[0053] (1) Synthetic Ca of dual-function light conversion agent 0.75 Zn 0.15 F 2 :Eu,Ce
[0054] Weigh Ca(NO 3 ) 2 ·4H 2 O(17.6Kg), Zn(NO 3 ) 2 , Ce 2 O 3 And MgO (total 3.2Kg), Eu 2 O 3 (17.00g), NH 4 F(11.5Kg), HNO 3 (25ml).
[0055] a. Use HNO first 3 Dissolve Eu 2 O 3 , Ce 2 O 3 And MgO, adding Ca(NO 3 ) 2 ·4H 2 O and Zn (NO 3 ) 2 Prepare 0.25mol / L solution A;
[0056] Prepare 1mol / L NH 4 F solution B.
[0057] b. Under stirring conditions, add solution A dropwise to solution B, continue stirring for 1 hour, centrifuge and dry at 100°C.
[0058] c. Add 10% of the weight of the precipitate to the flux CaCl after the above drying 2 After grinding, the sample is calcined at a high temperature of 800°C for 4 hours under a reducing atmosphere of a mixed gas of nitrogen and hydrogen and gradually cooled to obtain a sample.
[0059] The excitation spectrum of the product in the ultraviolet region is attached image 3 As shown, the excitation spectrum in the green region is...
Example Embodiment
[0062] Example 3
[0063] (1) Synthetic Ca of dual-function light conversion agent 0.65 Sr 0.30 Fe 0.05 F 2 :Eu
[0064] Weigh Ca(NO 3 ) 2 ·4H 2 O(24.5Kg), Sr(NO 3 ) 2 (11.2Kg), Fe 2 O 3 And Eu 2 O 3 (Total 31.00g), NH 4 F(21.2Kg), HNO 3 (30ml).
[0065] a. Use HNO first 3 Dissolve Eu 2 O 3 , Fe 2 O 3 And Eu 2 O 3 , Add Ca(NO 3 ) 2 ·4H 2 O, Sr(NO 3 ) 2 (11.2Kg) Prepare 0.25mol / L solution A;
[0066] Prepare 1mol / L NH 4 F solution B.
[0067] b. Under stirring conditions, add solution A dropwise to solution B, continue stirring for 1 hour, centrifuge and dry at 100°C.
[0068] c. The above-mentioned dried precipitate is added with 1% flux by weight of the agent precipitate into NaF for grinding, and then in H 2 With N 2 The mixture was calcined at a high temperature of 950°C for 3 hours under a reducing atmosphere and gradually cooled to obtain a sample.
[0069] (2) Production of masterbatch
[0070] Weigh 10kg of the sample of Example 3(1), 30kg of polyvinyl chloride, 0.2kg of zinc steara...
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