Preparation method of high-color-rendering white phosphor for 3D (three-dimensional) printing

Abstract

The invention relates to a preparation method of high-color-rendering white phosphor for 3D (three-dimensional) printing, and aims to solve the problems of high color temperature, low color rendering index and poor film forming performance of the white phosphor. The method includes the steps: taking 2-thenoyltrifluoroacetone-phenanthroline-europium, 4-benzoyl benzoic acid-terbium, benzothiazole-zinc and polystyrene-methacrylic acid glycidyl ester as raw materials; performing physical blending, heating and melting, drying, grinding and screening on the raw materials to prepare the high-color-rendering white phosphor, the particle diameter of the white phosphor is smaller than or equal to 1 micrometer, the prepared white phosphor materials are high in accuracy and good in purity, the purity of the white phosphor materials reach 99.8%, color coordinates X=0.332, Y=0.337, white light is emitted, the preparation method is advanced in process, data are detailed and accurate, and the advanced preparation method is used for the high-color-rendering white phosphor for 3D printing.

Description

technical field [0001] The invention relates to a method for preparing a high-color-rendering white phosphor powder for 3D printing, which belongs to the technical field of preparation and application of luminescent materials. Background technique [0002] White light-emitting diodes (LEDs) are known as the fourth-generation green lighting sources because of their small size, low energy consumption, and long life, and have been widely used in industrial and civilian products. [0003] As a kind of composite light, white light can effectively excite red, green, and blue primary color phosphors to emit their own characteristic monochromatic light through high-energy short-wavelength ultraviolet light, and finally compound to obtain white light; The technology of obtaining white light has high color rendering, and the current technology of preparing tri-primary white phosphors with high color rendering index needs to be broken through; in addition, the production of LED light-e...

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Problems solved by technology

[0003] As a kind of composite light, white light can effectively excite red, green, and blue primary color phosphors to emit their own characteristic monochromatic light through high-energy short-wavelength ultraviolet light, and finally compound to obtain white light; The technology of obtaining white light has high color rendering, and the current technology of preparing tri-primary white phosphors with high color rendering index needs to be broken through; in addition, the production of LED light-emitting layer by small molecule complexes has the defects of difficult film formation and short device life; Therefore, the preparation of fast film-forming high-color-rendering white phosphors is a research hotspot in the field of white LEDs, especially the high-color-rendering white phosphors that can be used for 3D printing is a research difficulty in this field

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