Environmental-friendly type fluorescent powder

A fluorescent powder and environment-friendly technology, applied in the field of lighting, can solve the problems of large pollution of fluorescent powder, and achieve the effects of simple production process, guaranteed production quality, and reduced pollutant discharge

Inactive Publication Date: 2019-01-04
广州市伟圣实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem solved by the present invention is to reduce the problem of relatively large pollution in the production process of fluorescent powder, and to provide an environmentally friendly fluorescent powder

Method used

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  • Environmental-friendly type fluorescent powder

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Embodiment 1

[0022] An environment-friendly fluorescent powder, comprising fluorescent powder and calcium carbonate, wherein the fluorescent powder is 2 parts by mass, and the calcium carbonate is 25 parts by mass. The phosphor powder includes 630 parts by mass of aluminum oxide, 285 parts by mass of yttrium oxide, and 5 parts by mass of cerium oxide. The fluorescent powder is prepared by the following method: take 300 parts by mass of the combustion agent, mix it with alumina, yttrium oxide, and cerium oxide, and heat it after ball milling; °C, reacted at this temperature for 3.5 hours, and gradually lowered to room temperature to obtain an intermediate powder, and the intermediate powder was ball milled to obtain a YAG-Ce phosphor. The combustion agent is a mixture of urea, oxalic acid and ethylene glycol. The modified calcium carbonate is prepared by the following method: after mixing 12 parts by mass of nano-calcium carbonate with 1250 parts by mass of deionized water, add 0.15 parts ...

Embodiment 2

[0028] The difference between embodiment 2 and embodiment 1 is that it includes fluorescent powder and calcium carbonate, 1 part by mass of the fluorescent powder, and 2 parts by mass of the calcium carbonate. The fluorescent powder is YAG-Ce fluorescent powder; the fluorescent powder includes 530 parts by mass of aluminum oxide, 215 parts by mass of yttrium oxide, and 2-21 parts by mass of cerium oxide. The fluorescent powder is prepared by the following method: take 270 parts by mass of the combustion agent, mix it with alumina, yttrium oxide, and cerium oxide, and heat it after ball milling; °C, reacted at this temperature for 3 hours, and gradually lowered to room temperature to obtain an intermediate powder, and the intermediate powder was ball milled to obtain a YAG-Ce phosphor. The combustion agent is a mixture of urea, oxalic acid and ethylene glycol. Described calcium carbonate is modified calcium carbonate, and described modified calcium carbonate is obtained by the...

Embodiment 3

[0030]The difference between embodiment 3 and embodiment 1 is that it includes fluorescent powder and calcium carbonate, the phosphor powder is 3 parts by mass, and the calcium carbonate is 40 parts by mass. The fluorescent powder is YAG-Ce fluorescent powder; the fluorescent powder includes 710 parts by mass of aluminum oxide, 395 parts by mass of yttrium oxide, and 21 parts by mass of cerium oxide. The fluorescent powder is prepared by the following method: take 310 parts by mass of the combustion agent, mix it with alumina, yttrium oxide, and cerium oxide, and heat it after ball milling; °C, reacted at this temperature for 4 hours, and gradually lowered to room temperature to obtain an intermediate powder, and the intermediate powder was ball milled to obtain a YAG-Ce phosphor. The combustion agent is a mixture of urea, oxalic acid and ethylene glycol. Described calcium carbonate is modified calcium carbonate, and described modified calcium carbonate is obtained by the fol...

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Abstract

The invention relates to the field of illumination, provides environmental-friendly type fluorescent powder and a preparation method thereof, and is used for solving the problem of serious pollution in the production course of the fluorescent powder. The environmental-friendly type fluorescent powder provided by the invention comprises the following components in parts by mass of 1-3 parts by massof fluorescent powder and 2-40 parts by mass of calcium carbonate. The fluorescent powder and the calcium carbonate are mixed according to a definite compounding ratio, so that the dispersibility ofthe fluorescent powder can be significantly improved, and besides, the optical consistency of the fluorescent powder is significantly improved; and the production technology is simple, little waste isgenerated in the whole course, and the environmental-friendly type fluorescent powder is environmentally friendly.

Description

technical field [0001] The invention relates to the lighting field, in particular to an environment-friendly fluorescent powder. Background technique [0002] YAG-Ce phosphor is a luminescent material that must be used in white LED devices. Manufacture of YAG-Ce phosphors by means of combustion synthesis can greatly reduce the synthesis reaction temperature, greatly save electricity, and lead to cost reduction. In today's electricity shortage and high cost, energy-saving and environmental protection technology is especially important. The existing manufacturing methods of YAG-Ce phosphors for white LEDs are basically the traditional high-temperature solid-phase method (or its improved method), and the reaction temperature is high, most of which will not be lower than 1400°C (generally 1400-1700°C). Depending on the type of reaction raw materials, particle changes, and pretreatment, the reaction temperature will vary to a certain extent, but the overall temperature is high,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/78C09K11/02C09C1/02C09C3/06C09C3/08
CPCC09C1/021C09C3/006C09C3/06C09C3/08C09K11/025C09K11/7769
Inventor 黄开宣
Owner 广州市伟圣实业有限公司
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