Fluorescent powder preparation method based on polyethylene glycol and with ethanol as solvent

A polyethylene glycol and phosphor technology, applied in chemical instruments and methods, luminescent materials, etc., can solve the problems of poor particle size uniformity, poor dispersion of phosphor powder, agglomeration, etc., and achieve improved luminous intensity, convenient operation, and improved dispersion. sexual effect
CN104745181AInactive Publication Date: 2015-07-01LONGTENG LIGHTING GRP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
LONGTENG LIGHTING GRP
Publication Date
2015-07-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a fluorescent powder preparation method based on polyethylene glycol and with ethanol as solvent, and belongs to the field of preparation of fluorescent powder. By utilizing sol gel combustion method, with polyethylene glycol (PEG) as dispersing agent, absolute ethyl alcohol as solvent and incendiary agent, urea as complexing agent and reducing agent, and nitrate as oxidant, through introducing fluxing agent boric acid, dissolving into absolute ethyl alcohol together with metal nitrate, heating in a water bath to form sol, cooling to obtain white gel, then heating the gel in a Muffle furnace until the gel burns spontaneously to form fluffy powder, cooling and grinding, so as to obtain fluorescent powder. The method is simple in process, free in pollution, low in synthesis temperature, short in reaction time, low in cost, low in energy consumption and high in quenching concentration; by utilizing surface dispersing agent PEG and solvent ethyl alcohol, the products are prevented from gathering, the dispersion property of the fluorescent powder and the evenness of particle size are improved, the fluorescent powder has excellent light emitting strength, and therefore the prepared fluorescent powder is better applicable for LED (light emitting diode) products.
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Description

technical field

[0001] The invention relates to the field of fluorescent powder preparation, in particular to a method for preparing fluorescent powder based on polyethylene glycol and using ethanol as a solvent. Background technique

[0002] White Light Emitting Diode (WLED for short), as a new type of solid light source, has the advantages of high efficiency, energy saving, long life, no radiation, green environmental protection, high light efficiency, and large safety factor. And backlight and other aspects show great application prospects. At present, the high-temperature solid-phase method is mainly used for the preparation of fluorescent powder. This method has many advantages, but the particle size of the synthesized fluorescent powder is relatively coarse and uneven, and it can be used only after ball milling. However, the crystal form of the ball-milled particles is destroyed, and the indicators such as luminous brightness, luminous efficiency and secondary perform...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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