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Luminous pearl nucleus and preparation method thereof as well as method for cultivating luminous pearls

A bead core and pearl technology, which is applied in the field of high-brightness luminescent bead core, can solve the problems of reducing the value of luminous pearls, poor luminous efficiency of luminous pearls, and unstable chemical structure, etc., and achieves low cost, long afterglow time, high output and quality Effect

Active Publication Date: 2015-03-25
广东尊鼎珍珠有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The bead cores are prepared by mixing fluorescent materials with other media, which have low fluorescence, short lifespan, and unstable chemical structure.
[0004] In summary, the luminous pearls cultivated by the methods described in the prior art have obvious disadvantages: after drilling and bleaching, the lifespan is not long; the luminous effect is poor; the chemical structure is unstable; and the quality of the pearls produced is relatively low. Difference
It is particularly emphasized that the luminous bead cores prepared by the above patents and the luminous pearls cultivated cannot withstand the penetration or stimulation of chemicals during the bleaching process, which will cause the luminous bead cores to be slowly oxidized or corroded. On the contrary, the luminous rate of bleached luminous pearls is poor, and the lifespan is not long, which greatly reduces the value of luminous pearls

Method used

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  • Luminous pearl nucleus and preparation method thereof as well as method for cultivating luminous pearls
  • Luminous pearl nucleus and preparation method thereof as well as method for cultivating luminous pearls
  • Luminous pearl nucleus and preparation method thereof as well as method for cultivating luminous pearls

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Embodiment 1: the preparation of green luminous pearl

[0043] Preparation of luminescent bead core: select 1000g of composite fluorescent material emitting green fluorescence, wherein phase A (Sr, Eu, Dy) 0.92 (Al, B) 2.00 o 3.92 The weight percentage is 69%; Phase B (Sr, Eu, Dy) 3.68 (Al, B) 14 o 24.68 The weight percentage is 31%. Put the composite fluorescent material into a crucible, put the crucible into an electric furnace with carbon powder as a reducing atmosphere, and heat it. After 5 hours, the temperature of the furnace is slowly raised to 1500 ° C, and the pressure is increased to 2.1 atmospheres. After 3 hours of constant temperature and constant pressure , in the molten state, it is directly pressed into a round core with a mold.

[0044] Preparation of small pieces of cells: Select suitable seawater pearl oysters, first use a scalpel to cut off the front and rear adductor muscles of the small piece of clam, make the two shells open by themselves, r...

Embodiment 2

[0048] Embodiment 2: the cultivation of blue fluorescent luminous pearl

[0049] Except selecting 850g of composite fluorescent material and adding 150g of natural crystal (purity: 99.8% by weight) to the fluorescent composite material, the same steps as in Example 1 were used to prepare blue fluorescent luminous pearls. The composite fluorescent material phase A (Sr, Eu, Dy) 0.92 (Al, B) 2.00 o 3.92 The weight ratio of is 31%; Phase B (Sr, Eu, Dy) 3.68 (Al, B) 14 o 24.68 The weight ratio is 69%.

[0050] Similarly, measure the prepared luminous bead core and the luminous spectrum of the luminous pearls cultivated with it with HP800 type spectrometer, see respectively figure 2 Line a and line b in. It can be seen from the figure that the luminous pearl can emit blue light, and its luminous intensity is almost equal to that of the luminous bead core. Further measurement of the afterglow time of the prepared blue luminous pearls can reach 87 hours.

Embodiment 3

[0051] Embodiment 3: the cultivation of yellow fluorescent luminous pearl

[0052] Except for selecting 900 g of composite fluorescent materials and adding 100 g of natural crystal (purity: 99.8% by weight) to the fluorescent composite material, the same steps as in Example 1 were used to prepare yellow fluorescent luminous pearls. The composite fluorescent material phase A (Sr, Ca, Eu, Dy) 0.92 (Al, B) 2.00 o 3.92 ; Phase B is (Sr, Ca, Dy) 3.68 (Al, B) 14 o 24.68 ; Wherein the phase A is 85%, and the phase B is 15%.

[0053] Similarly, measure the prepared luminous bead core and the luminous spectrum of the luminous pearls cultivated with it with HP800 type spectrometer, see respectively image 3 Line a and line b in. It can be seen from the figure that the luminous pearl can emit yellow light, and its luminous intensity is almost equal to that of the luminous bead core. After further measurement, the afterglow time of the prepared yellow luminous pearl can reach 84 h...

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Abstract

The invention provides a luminous pearl nucleus and a preparation method thereof as well as a method for cultivating luminous pearls. The method for preparing the luminous pearl nucleus comprises the following steps of uniformly mixing fluorescent powder with other randomly-selected components and putting the mixture into a crucible; putting the crucible into a reducing atmosphere furnace to be heated; after 5-8 hours, slowly raising the furnace temperature to 1150-1600 DEG C; pressurizing to be more than two barometric pressures and keeping a constant temperature and a constant pressure for 2-3 hours; directly utilizing a mould to press the fluorescent powder at a fused state into a luminous pearl nucleus shape; or after keeping the constant temperature and the constant pressure for 2-3 hours, naturally cooling to be condensed; and taking the crucible out of the atmosphere furnace and cooling to a room temperature, and polishing a condensed body into the luminous pearl nucleus shape. The luminous pearls cultivated by using the luminous pearl nucleus can resist corrosion of chemicals such as an acid, an alkali and the like, and can emit high-brightness light for a long time.

Description

technical field [0001] The invention relates to a high-brightness luminous bead core which emits light with high brightness and is corrosion-resistant to chemicals such as acids and alkalis, and a method for cultivating seawater luminous pearls using the luminous bead core. More specifically, the present invention relates to a luminous bead core prepared by using strontium aluminate or calcium aluminate composite fluorescent powder and resistant to corrosion by chemicals such as acids and alkalis, and a method for cultivating and processing luminous pearls using the luminous bead core. Background technique [0002] As we all know, the natural luminous pearl is a luminous fluorite mineral, and the reason for its luminescence is the movement of electrons in the mineral. When the electrons in the mineral are stimulated by external energy, they change from a low-energy state to a high-energy state; when the external energy stimulation stops, the electrons turn from a high-energy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 何德边
Owner 广东尊鼎珍珠有限公司
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