CN102558820A - Rare earth fluorescent poly carbonate (PC) and preparation method thereof - Google Patents
Rare earth fluorescent poly carbonate (PC) and preparation method thereof Download PDFInfo
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- CN102558820A CN102558820A CN2012100149303A CN201210014930A CN102558820A CN 102558820 A CN102558820 A CN 102558820A CN 2012100149303 A CN2012100149303 A CN 2012100149303A CN 201210014930 A CN201210014930 A CN 201210014930A CN 102558820 A CN102558820 A CN 102558820A
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Abstract
The invention discloses rare earth fluorescent poly carbonate (PC) and a preparation method thereof. The rare earth fluorescent PC consists of the following components in percentage by weight: 92 to 96.5 percent of PC, 2 to 7 percent of combined rare earth fluorescent powder, 0.5 to 1 percent of coated light dispersing agent, 0.2 to 0.5 percent of compatilizer, 0.1 to 0.5 percent of antioxidant, 0.1 to 0.5 percent of lubricating agent and 0.1 to 0.5 percent of dispersing agent. The preparation method for the rare earth fluorescent PC is characterized by comprising the following steps of: uniformly mixing the PC, the combined rare earth fluorescent powder, the coated light dispersing agent, the compatilizer, the antioxidant, the lubricating agent and the dispersing agent, putting a mixture into a twin-screw extruder, and performing melt blending to obtain the rare earth fluorescent PC. The invention aims to overcome the defects in the prior art, provides the rare earth fluorescent PC which is high in light stability, luminous efficiency, light transmittance and haze and low in light attenuation, and also aims to provide the preparation for the rare earth fluorescent PC.
Description
Technical field
The present invention relates to a kind of rare-earth fluorescent PC, the invention still further relates to a kind of method for preparing this rare-earth fluorescent PC.
Background technology
First red LED come out in 1964, developed green LED afterwards.Just succeed in developing up to blue-ray LED in 1994, the breakthrough of blue led makes LED form complete three-color light-emitting system, lays a good foundation for realizing white light LEDs.Japanese Ri Ya chemical company in 1996 finds can make white light source with the YAG phosphor powder matching blue LED of jaundice spectrum row.At present, also in the special phosphor of exploitation purple light and UV-light series, the emission wavelength of this type fluorescent material is 370～420nm to people, utilizes the method that applies, and the LED of this type phosphor powder matching purple light or UV-light also can produce white light LEDs.1998, reach the white light LEDs listing of realistic scale.2000, after Japanese Ri Ya company, the Lumileds company of the U.S., Bostonian photon research centre etc. were successively announced to have succeeded in developing countries such as more powerful white light LEDs, Switzerland, Australia and are also begun these applications of result to lighting field.Units such as the 13 in the Peking University, industry of China and electronics technology group of the Ministry of Information Industry also develop sample.
LED adopts fluorescent material to realize that white light mainly contains three kinds of methods, but they do not have fully matured, seriously influence the application of white light LEDs at lighting field thus.Specifically, first method is that coating can be by blue-light excited yellow fluorescent powder on the blue led chip, the complementary white light that forms of the gold-tinted that blue light that chip sends and fluorescent material send.This technology is by Japanese Nichia company monopolizing; And the shortcoming of a principle of this scheme be exactly in this fluor Ce3+ ionic emmission spectrum do not have a continuous spectrum characteristic; Color developing is relatively poor; Be difficult to satisfy the requirement of low colour temperature illumination, luminous efficiency is high not enough simultaneously, need improve through the high-efficiency fluorescence powder of development of new.Second method is to apply green and red fluorescence powder on the blue led chip, green glow and the compound white light that obtains of ruddiness that blue light that sends through chip and fluorescent material send, and color developing is better.But the effective efficiency of conversion of the used fluorescent material of this method is lower, and especially the efficient of red fluorescence powder needs raising by a relatively large margin.The third method is to apply three primary colors fluorescent powder on the purple LED chip; The fluorescent material of multiple color just; Utilize the long wave ultraviolet light 370nm～380nm or the purple light 380nm～410nm of this chip emission to come excitated fluorescent powder and realize white light emission, this method color developing is better, but the same existence problem similar with second method; And at present mostly higher redness and the green emitting phosphor of efficiency of conversion is the sulfide system, and this type light-emitting phosphor poor stability, light decay are bigger.And the white light LEDs that adopts this technology to make, making that when LED works chip is heated and distributes a large amount of heat, the temperature around the chip raises rapidly, thereby makes LED have tangible light decay, influences the life-span of luminous efficiency and LED.
Summary of the invention
The objective of the invention is provides a kind of good light stability in order to overcome weak point of the prior art, and light decay is little, and luminous efficiency is high, the high and high rare-earth fluorescent PC of mist degree of transmittance.
Another object of the present invention provides a kind of method for preparing above-mentioned rare-earth fluorescent PC.
In order to achieve the above object, the present invention adopts following scheme:
A kind of rare-earth fluorescent PC is characterized in that composed of the following components by weight percentage:
Aforesaid a kind of rare-earth fluorescent PC is characterized in that composed of the following components by weight percentage:
Aforesaid a kind of rare-earth fluorescent PC is characterized in that composed of the following components by weight percentage:
Aforesaid any rare-earth fluorescent PC is characterized in that described combined fluorescent RE powder is one of different spherical type yellow rare-earth fluorescent powders of non-YAG of launching main peaks or its combination.
Aforesaid any rare-earth fluorescent PC is characterized in that the spherical type yellow fluorescent powder of described non-YAG can be that the blue chip of 430nm～470nm excites the gold-tinted that can launch 536nm～545nm, 546nm～555nm or 556nm～565nm by emission wavelength.
Aforesaid any rare-earth fluorescent PC is characterized in that described cladded type light diffusing agent is one or both in cladded type organosilicon light diffusing agent, the esters of acrylic acid light diffusing agent.
Aforesaid any rare-earth fluorescent PC is characterized in that described oxidation inhibitor is oxidation inhibitor 2921.
Aforesaid any rare-earth fluorescent PC is characterized in that described lubricant is lubricant PETS.
Aforesaid any rare-earth fluorescent PC is characterized in that described dispersion agent is the silicone oil dispersion agent.
Aforesaid any rare-earth fluorescent PC is characterized in that described compatilizer is a kind of in titanate coupling agent or the silane coupling agent.
A kind of method for preparing aforesaid any rare-earth fluorescent PC of the present invention is characterized in that may further comprise the steps:
With PC, combined fluorescent RE powder, the cladded type light diffusing agent, compatilizer, oxidation inhibitor, lubricant and dispersant are even, again the gained mixture are put into the twin screw extruder melt blending, promptly get rare-earth fluorescent PC.
PC of the present invention is a polycarbonate.
Oxidation inhibitor 2921 described in the present invention is the commercially available prod, can chemical industry ltd of black horse nation buy from the Foshan City.
Lubricant PETS described in the present invention is the commercially available prod, can close friend's auxiliary agent chemical industry Ltd buy from Nanjing.
Dispersion agent silicone oil commercially available prod described in the present invention can the bright chemical industry of crowd ltd be buied from Guangzhou.
Combined fluorescent RE powder is produced by Grirem Advance Materials Co., Ltd among the present invention.
In sum, beneficial effect of the present invention:
Preparing method of the present invention compares present technology of preparing, and technology is simple, and is low for equipment requirements and easy to implement; Added compatilizer among the present invention and guaranteed the consistency between PC matrix and the fluorescent RE powder, guaranteed that fluorescent RE powder and matrix form firm interface, unlikelyly made that the mechanical properties decrease amplitude of material is big.The fluorescent RE powder that the present invention adopts is not limited to a certain classification, but adopts the combined fluorescent RE powder that luminous efficiency is high, transmittance is high and mist degree is high.Rare-earth fluorescent PC good light stability of the present invention, light decay is little, and luminous efficiency is high, and transmittance is high and mist degree is high.Add among the present invention light diffusing agent make effectively that fluorescent RE powder is luminous under the few situation of addition can be not dazzling yet.
Embodiment
Below in conjunction with embodiment the present invention is done and to further describe:
A kind of rare-earth fluorescent PC of the present invention is characterized in that composed of the following components by weight percentage:
Wherein said combined fluorescent RE powder is one or more the mixture in the spherical type yellow rare-earth fluorescent powder of non-YAG of different emission main peaks.
The spherical type yellow fluorescent powder of wherein said non-YAG is that the blue chip of 430nm～470nm excites the gold-tinted that can launch 536nm～545nm, 546nm～555nm or 556nm～565nm by emission wavelength.
Wherein said cladded type light diffusing agent is the organosilicon light diffusing agent, and the trade mark is one or more the combination among FRX-298 or Japanese organosilyl KMP-590 of SHIN-ETSU HANTOTAI of the WMX-3 of Switzerland sunshine, Japanese Zhong Yuan etc.
Wherein said compatilizer is one or both in titanate coupling agent or the silane coupling agent.
Wherein said oxidation inhibitor is oxidation inhibitor 2921; Described lubricant is lubricant PETS; Described dispersion agent is the silicone oil dispersion agent.
Wherein said combined fluorescent RE powder is produced by Grirem Advance Materials Co., Ltd.
Embodiment 1
Rare-earth fluorescent PC of the present invention, composed of the following components by weight percentage:
With PC, combined fluorescent RE powder, the cladded type light diffusing agent, compatilizer, oxidation inhibitor, lubricant and dispersant are even, again the gained mixture are put into the twin screw extruder melt blending, promptly get rare-earth fluorescent PC.
Embodiment 2
Rare-earth fluorescent PC of the present invention, composed of the following components by weight percentage:
With PC, combined fluorescent RE powder, the cladded type light diffusing agent, compatilizer, oxidation inhibitor, lubricant and dispersant are even, again the gained mixture are put into the twin screw extruder melt blending, promptly get rare-earth fluorescent PC.
Embodiment 3
Rare-earth fluorescent PC of the present invention, composed of the following components by weight percentage:
With PC, combined fluorescent RE powder, the cladded type light diffusing agent, compatilizer, oxidation inhibitor, lubricant and dispersant are even, again the gained mixture are put into the twin screw extruder melt blending, promptly get rare-earth fluorescent PC.
Embodiment 4
Rare-earth fluorescent PC of the present invention, composed of the following components by weight percentage:
With PC, combined fluorescent RE powder, the cladded type light diffusing agent, compatilizer, oxidation inhibitor, lubricant and dispersant are even, again the gained mixture are put into the twin screw extruder melt blending, promptly get rare-earth fluorescent PC.
Embodiment 5
Rare-earth fluorescent PC of the present invention, composed of the following components by weight percentage:
With PC, combined fluorescent RE powder, the cladded type light diffusing agent, compatilizer, oxidation inhibitor, lubricant and dispersant are even, again the gained mixture are put into the twin screw extruder melt blending, promptly get rare-earth fluorescent PC.
The performance of each rare-earth fluorescent PC is seen table 1 in the embodiment of the invention 1 to 6:
Claims (10)
1. rare-earth fluorescent PC is characterized in that composed of the following components by weight percentage:
2. a kind of rare-earth fluorescent PC according to claim 1 is characterized in that composed of the following components by weight percentage:
3. according to described any rare-earth fluorescent of claim 1 to 2 PC, it is characterized in that described combined fluorescent RE powder is one or more the mixture in the spherical type yellow rare-earth fluorescent powder of non-YAG of different emission main peaks.
4. any rare-earth fluorescent PC according to claim 3 is characterized in that the spherical type yellow fluorescent powder of described non-YAG is that the blue chip of 430nm～470nm excites the gold-tinted that can launch 536nm～545nm, 546nm～555nm or 556nm～565nm by emission wavelength.
5. according to described any rare-earth fluorescent of claim 1 to 2 PC, it is characterized in that described cladded type light diffusing agent is one or both in organosilicon light diffusing agent, the esters of acrylic acid light diffusing agent.
6. according to described any rare-earth fluorescent of claim 1 to 2 PC, it is characterized in that described oxidation inhibitor is oxidation inhibitor 2921.
7. according to described any rare-earth fluorescent of claim 1 to 2 PC, it is characterized in that described lubricant is lubricant PETS.
8. according to described any rare-earth fluorescent of claim 1 to 2 PC, it is characterized in that described dispersion agent is the silicone oil dispersion agent.
9. according to described any rare-earth fluorescent of claim 1 to 2 PC, it is characterized in that described compatilizer is a kind of in titanate coupling agent or the silane coupling agent.
10. method for preparing like described any rare-earth fluorescent of claim 1 to 2 PC is characterized in that may further comprise the steps:
With PC, combined fluorescent RE powder, the cladded type light diffusing agent, compatilizer, oxidation inhibitor, lubricant and dispersant are even, again the gained mixture are put into the twin screw extruder melt blending, promptly get rare-earth fluorescent PC.
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| CN201210014930.3A CN102558820B (en) | 2012-01-17 | 2012-01-17 | Rare earth fluorescent poly carbonate (PC) and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104650568A (en) * | 2015-02-12 | 2015-05-27 | 广东银禧科技股份有限公司 | LED material for filtering yellow light and preparation method thereof |
| CN105419255A (en) * | 2015-12-11 | 2016-03-23 | 广东天保新材料有限责任公司 | Regenerative PETG/PC alloy light diffusion material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101213256A (en) * | 2005-07-05 | 2008-07-02 | 出光兴产株式会社 | Light-diffusing polycarbonate resin composition and light-diffusing plate using same |
| US20090207496A1 (en) * | 2005-11-30 | 2009-08-20 | Haruo Sasaki | Polycarbonate Resin Composition for Light Diffusion Plates, and Light Diffusion Plate |
| CN102020819A (en) * | 2009-09-16 | 2011-04-20 | 大连路明发光科技股份有限公司 | Plastic light-conversion fluorescent granules and application thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101213256A (en) * | 2005-07-05 | 2008-07-02 | 出光兴产株式会社 | Light-diffusing polycarbonate resin composition and light-diffusing plate using same |
| US20090207496A1 (en) * | 2005-11-30 | 2009-08-20 | Haruo Sasaki | Polycarbonate Resin Composition for Light Diffusion Plates, and Light Diffusion Plate |
| CN102020819A (en) * | 2009-09-16 | 2011-04-20 | 大连路明发光科技股份有限公司 | Plastic light-conversion fluorescent granules and application thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104650568A (en) * | 2015-02-12 | 2015-05-27 | 广东银禧科技股份有限公司 | LED material for filtering yellow light and preparation method thereof |
| CN104650568B (en) * | 2015-02-12 | 2016-09-07 | 广东银禧科技股份有限公司 | LED material for filtering yellow light and preparation method thereof |
| CN105419255A (en) * | 2015-12-11 | 2016-03-23 | 广东天保新材料有限责任公司 | Regenerative PETG/PC alloy light diffusion material and preparation method thereof |
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| CN102558820B (en) | 2014-04-16 |
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Granted publication date: 20140416 Termination date: 20190117 |