CN106565216A - Fireproof and fluorescent ceramic base for high-power LED, and preparation method thereof - Google Patents

Fireproof and fluorescent ceramic base for high-power LED, and preparation method thereof Download PDF

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CN106565216A
CN106565216A CN201610929720.5A CN201610929720A CN106565216A CN 106565216 A CN106565216 A CN 106565216A CN 201610929720 A CN201610929720 A CN 201610929720A CN 106565216 A CN106565216 A CN 106565216A
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parts
power led
preparation
ceramic
fireproof
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赵鑫
周丹
胡春霞
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Anhui Jiangwei Precision Manufacturing Co Ltd
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Anhui Jiangwei Precision Manufacturing Co Ltd
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Abstract

The invention discloses a fireproof and fluorescent ceramic base for high-power LED, and a preparation method thereof, wherein the fireproof and fluorescent ceramic base is prepared from the following raw materials by weight: 2-3 parts of boron nitride, 1-2 parts of CeO2, 1-2 parts of cordierite, 40-50 parts of Al2O3, 4-7 parts of Y2O3, 3-6 parts of citric acid, 3-5 parts of ethylenediamine, 15-20 parts of deionized water, 1-2 parts of lanthanum oxide, 2-3 parts of tetraethyl orthosilicate, 1-2 parts of MgO, 30-40 parts of ethanol, 5-10 parts of silicon micro-powder, and 15-20 parts of a silane coupling agent KH550. According to the present invention, the fireproof and fluorescent ceramic base has functions of excellent tensile strength, excellent compressive strength, excellent abrasion resistance, high thermal conductivity, and fluorescence, wherein the fire resistance of the material is improved by matching with the added boron nitride and the like.

Description

A kind of great power LED fire resisting, can fluorescence base of ceramic and preparation method thereof
Technical field
The present invention relates to a kind of base of ceramic of LED, and in particular to a kind of great power LED fire resisting, can fluorescence pottery Porcelain pedestal and preparation method thereof.
Background technology
Crystalline ceramics as a kind of novel photoelectric functional material for developing rapidly in recent years, calorifics, mechanical property, Optical property, composite construction and large-scale production aspect is with the obvious advantage, and crystalline ceramics is at present mainly as window material, laser material Material and scintillation material are applied：The luminescent material of transparence can solve scattering and absorption of the fluorescent material to light, improve luminous Efficiency；There is no the segregation coefficient of monocrystalline in ceramics, it is possible to achieve the high concentration of various light emitting ionics is uniformly co-doped with, so as to can By various parameters such as transmissivity, the luminescence bands of precise control potsherd fluorophor, to adjust and control phosphor ceramic piece Ratio between the gold-tinted of conversion and the blue light do not changed, using the uniformity of crystalline ceramics itself, obtains homogeneous high-quality White light, and luminescent designs can be carried out, develop new material；Crystalline ceramics has an excellent mechanically and thermally mechanical property, anti-vibration, Thermal conductivity is good, it is possible to resolve blue-ray LED persistently lights lower temperature and raises the various luminous problem for causing, and further improves sending out for device Photostability and service life.
Shi Yun exists《Ce:Y3Al5O12Application study of the crystalline ceramics in white light LEDs》In, using CeO2、Al2O3 、Y2O3 A kind of crystalline ceramics is prepared for, but also be there are problems that thermal conductivity factor is not good enough, do not had.
The content of the invention
Think deeply based on more than, the present invention is intended to provide a kind of thermal conductivity factor is big, and the great power LED with fluorescent functional With base of ceramic and preparation method thereof.
The technical problem to be solved is realized using following technical scheme：
A kind of great power LED fire resisting, can fluorescence base of ceramic, it is characterised in that be made up of the raw material of following weight portion：
Boron nitride 2-3, CeO2 1-2, cordierite 1-2, Al2O3 40-50, Y2O3 4-7, citric acid 3-6, ethylenediamine 3-5, go from Sub- water 15-20, lanthana 1-2, tetraethyl orthosilicate 2-3, MgO1-2, ethanol 30-40, silicon powder 5-10, Silane coupling agent KH550 15-20；
A kind of described great power LED fire resisting, can fluorescence base of ceramic and preparation method thereof, it is characterised in that be by with Lower step is made：
A. with citric acid as carbon source, ethylenediamine, deionized water are added, is placed 3-7 days under the conditions of 150-250 DEG C, obtained in purple Outer light is excited down, the liquid carbon point fluorescent material with blue emission, green emission and red emission；
B. silicon powder, mullite are added in step b gained liquid, add Silane coupling agent KH550, ultrasonic disperse 10- After 30min, 3-5h is soaked, filter, wash, dry, obtain adsorbing the mixture of carbon point fluorescent material；
C. by CeO2, Al2O3, Y2O3, lanthana, boron nitride and step a gained mixture add in ball mill, and add positive silicon Acetoacetic ester, MgO, ethanol, Jing after ball mill mixing 8-15h, slurry are placed in the drying box that temperature is 80-120 DEG C and are fully done It is dry；
D. step c gains is sieved and make biscuit with isostatic cool pressing, then proceed to 1650 DEG C of -1850 DEG C of temperature in vacuum drying oven After lower insulation 20h, transparent sample can be obtained, be to eliminate the internal stress and Lacking oxygen that may be introduced during vacuum-sintering, will be tried Sample is annealed 15-25 h in 1380-1500 DEG C of air atmosphere.
A kind of described great power LED fire resisting, can fluorescence base of ceramic and preparation method thereof, it is characterised in that step Suddenly the vacuum of the vacuum drying oven described in d is（5-15）10-4Par。
The invention has the beneficial effects as follows：Silicon powder adsorptivity, the dispersiveness that Silane coupling agent KH550 was processed preferably, is soaked After steeping in carbon point fluorescent material, carbon point fluorescent material can be adsorbed, so as to give encapsulating material can fluorescence the characteristics of, meanwhile, It is dispersed in ceramic bases, it is to avoid the directly contact of carbon point fluorescent material and LED chip, efficiently solve due to LED chips generate heat and cause the problem that fluorescent material rate of decay is too high, failure is too fast, and then improve the use of LED lamps Life-span and integrated quality；Meanwhile, silicon powder strengthens can the tension of ceramic base, compression strength, and anti-wear performance is improved, and can be increased Big its thermal conductivity factor, increases fire resistance；Coordinate boron nitride of addition etc., improve the fire-resistance property of material.
Specific embodiment
With reference to embodiment, the specific embodiment of the present invention is further described.
Embodiment
A kind of great power LED fire resisting, can fluorescence base of ceramic, it is characterised in that be by the raw material of following weight portion Make：
Boron nitride 3, CeO2 2, cordierite 2, Al2O3 50, Y2O3 7, citric acid 6, ethylenediamine 5, deionized water 20, lanthana 2, Tetraethyl orthosilicate 3, MgO 2, ethanol 40, silicon powder 10, Silane coupling agent KH550 20；
A kind of described great power LED fire resisting, can fluorescence base of ceramic and preparation method thereof, it is characterised in that be by with Lower step is made：
A. with citric acid as carbon source, ethylenediamine, deionized water are added, is placed 3-7 days under the conditions of 150-250 DEG C, obtained in purple Outer light is excited down, the liquid carbon point fluorescent material with blue emission, green emission and red emission；
B. silicon powder, mullite are added in step b gained liquid, add Silane coupling agent KH550, ultrasonic disperse 10- After 30min, 3-5h is soaked, filter, wash, dry, obtain adsorbing the mixture of carbon point fluorescent material；
C. by CeO2, Al2O3, Y2O3, lanthana, boron nitride and step a gained mixture add in ball mill, and add positive silicon Acetoacetic ester, MgO, ethanol, Jing after ball mill mixing 8-15h, slurry are placed in the drying box that temperature is 80-120 DEG C and are fully done It is dry；
D. step c gains is sieved and make biscuit with isostatic cool pressing, then proceed to 1650 DEG C of -1850 DEG C of temperature in vacuum drying oven After lower insulation 20h, transparent sample can be obtained, be to eliminate the internal stress and Lacking oxygen that may be introduced during vacuum-sintering, will be tried Sample is annealed 15-25 h in 1380-1500 DEG C of air atmosphere.
A kind of described great power LED fire resisting, can fluorescence base of ceramic and preparation method thereof, it is characterised in that step Suddenly the vacuum of the vacuum drying oven described in d is（5-15）10-4Par。
The present invention technical parameter be：Thermal conductivity >=15 W/mK；Light efficiency is more than or equal to 130 lm/W.

Claims (3)

1. a kind of great power LED fire resisting, can fluorescence base of ceramic, it is characterised in that be by the raw material system of following weight portion Into：
Boron nitride 2-3, CeO2 1-2, cordierite 1-2, Al2O3 40-50, Y2O3 4-7, citric acid 3-6, ethylenediamine 3-5, deionization Water 15-20, lanthana 1-2, tetraethyl orthosilicate 2-3, MgO1-2, ethanol 30-40, silicon powder 5-10, Silane coupling agent KH550 15-20。
2. a kind of great power LED fire resisting according to claim 1, can fluorescence base of ceramic and preparation method thereof, its It is characterised by, is made up of following steps：
A. with citric acid as carbon source, ethylenediamine, deionized water are added, is placed 3-7 days under the conditions of 150-250 DEG C, obtained in purple Outer light is excited down, the liquid carbon point fluorescent material with blue emission, green emission and red emission；
B. silicon powder, mullite are added in step b gained liquid, add Silane coupling agent KH550, ultrasonic disperse 10- After 30min, 3-5h is soaked, filter, wash, dry, obtain adsorbing the mixture of carbon point fluorescent material；
C. by CeO2, Al2O3, Y2O3, lanthana, boron nitride and step a gained mixture add in ball mill, and add positive silicon Acetoacetic ester, MgO, ethanol, Jing after ball mill mixing 8-15h, slurry are placed in the drying box that temperature is 80-120 DEG C and are fully done It is dry；
D. step c gains is sieved and make biscuit with isostatic cool pressing, then proceed to 1650 DEG C of -1850 DEG C of temperature in vacuum drying oven After lower insulation 20h, transparent sample can be obtained, be to eliminate the internal stress and Lacking oxygen that may be introduced during vacuum-sintering, will be tried Sample is annealed 15-25 h in 1380-1500 DEG C of air atmosphere.
3. a kind of great power LED fire resisting according to claim 2, can fluorescence base of ceramic and preparation method thereof, its It is characterised by, the vacuum of the vacuum drying oven described in step d is（5-15）10-4Par。
CN201610929720.5A 2016-10-31 2016-10-31 Fireproof and fluorescent ceramic base for high-power LED, and preparation method thereof Pending CN106565216A (en)

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Application publication date: 20170419