CN105504755A - Light scattering material and preparation method applying same - Google Patents
Light scattering material and preparation method applying same Download PDFInfo
- Publication number
- CN105504755A CN105504755A CN201610011227.5A CN201610011227A CN105504755A CN 105504755 A CN105504755 A CN 105504755A CN 201610011227 A CN201610011227 A CN 201610011227A CN 105504755 A CN105504755 A CN 105504755A
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- light
- scattering material
- preparation
- diffusant
- scattering
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/221—Oxides; Hydroxides of metals of rare earth metal
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
Abstract
The invention discloses a light scattering material and a preparation method applying the same. A mixed light dispersing agent is prepared from, by mass, 21.7-84.03% of mica group minerals, 11.76-65.2% of rare earth oxide materials and 4.2-13.04% of titanate materials. According to the light scattering material, a point light source of an LED is converted into an area light source, and the requirement for the indoor illumination market is met. The preparation method is easy to implement, raw materials are easy to obtain, the cost is low, the technological controllability is high, and the light scattering material can be obtained.
Description
Technical field
The present invention relates to technical field of LED illumination, particularly relate to the preparation method of a kind of light-scattering material and application thereof.
Background technology
LED illumination is a kind of novel solid state light emitter, has energy-saving and environmental protection, life-span long three advantages, can realize an energy consumption for consumption incandescent light 10% in theory, than fluorescent lamp energy saving 50%; Life-span is 10 times of luminescent lamp, 100 times of incandescent light; Due to white light LEDs as interior lighting light source time because LED is pointolite, need by adding one deck light-scattering material in Glass tubing or PC plastics, LED point light source conversion face light source, for interior lighting.
Mainly three major types is divided both at home and abroad at present with the involved material of LED light scattering material and diffuser plate:
The first kind: organic Si resin.As patent CN201410299182.7: the present invention discloses a kind of PMMA light diffusing agent, its raw material comprises freezing Crushing of Ultrafine polysiloxane particle, light scattering agent 1, light scattering agent 2, solidifying agent, compatilizer.The present invention adopts the method for cryogenic freezing and ultrasonic grinding, commercially available polysiloxane particle is converted into the broken polysiloxane particle of low-temperature fine powder, and it is added in PMMA material, and PMMA material can be made to obtain outstanding atomizing effect.
Equations of The Second Kind: inorganic SiO
2and TiO
2as light-scattering material.As patent CN201510214516.0: the invention discloses a kind of light diffusion PET sheet and use up diffusion PP Pipe Compound and preparation method thereof, be made up of following mass percent component: PET97.5 ~ 99.5%, light diffusing agent 0.5 ~ 1.5%, nano silicon 0.1 ~ 0.5%, antioxidant 300 0.1 ~ 0.5%.By the light diffusion PET sheet prepared by light diffusion PP Pipe Compound of the present invention, there is excellent light transmission, light diffusing and haze, its diffusivity can reach 80% ~ 90%, transmittance can reach 88% ~ 92%, mist degree reaches 80% ~ 90%, can be applicable to LED fluorescent tube, lampshade uses.3rd class: other composite inorganic chemicals are as light-scattering material, as patent CN201410298180.6: the present invention discloses the inorganic light diffusing agent of a kind of printing opacity, it is characterized in that: each weight percentages of components of composition is: sodium aluminum fluoride 85-94%, agalmatolite 3-8%, kaolin 2-5%, potassium felspar sand 0.5-1%, brucite 0.2-1%, utilize the coated sodium aluminum fluoride of fluidized-bed, by pulverulent material being mixed with the warm air of heating at circulation flow dynamic furnace, specific surface reaches moment igneous fusion, spheroidization, at sodium aluminum fluoride Surface coating one deck reflector layer, thus make sodium aluminum fluoride possess good light transmission and reflective.
Show from above open source literature, at present in the fields such as LED light scattering and diffusion, relate to scattering of light and mainly contain organosilicon and resin particle, inorganic materials SiO
2, TiO
2, sodium aluminum fluoride, kaolin 2-5%, potassium felspar sand etc., above preparation method is complicated, and composition is various, and raw material not easily obtains.
Summary of the invention
The object of the invention is, by adding appropriate light-scattering material in LED lamp cover or shell, the pointolite of LED is converted into area source, is applicable to the interior lighting market requirement, provides a kind of preparation method of light-scattering material simultaneously.
For reaching this object, the present invention by the following technical solutions:
A kind of mixed light diffusant, calculates by mass percentage, comprising: Mica Group Minerals is 21.7% ~ 84.03%; Rare earth oxide material 11.76% ~ 65.2%; Titanate material 4.2% ~ 13.04%.
Preferably, described Mica Group Minerals is one or more of white mica, hydromica or sericite.Mica Group Minerals is a kind of rock forming mineral, and usually in six sides or the tabular of rhombus, sheet and column crystalline form, they have good thermal insulation, elasticity and toughness, stable in properties and can be shelled into the performance with elastic transparent sheet.
Preferably, described rare earth oxide material is La
2o
3, Y
2o
3, Gd
2o
3, Lu
2o
3, Eu
2o
3and Yb
2o
3one or more.Because the electronic level of rare earth element and spectral line more rich and varied than other element, they having from UV-light, visible ray to infrared light district absorption or emission phenomena.
Preferably, described titanate material is BaTiO
3, SrTiO
3, K
2tiO
3, MgTiO
3and TiO
2one or more.Titanate material has high light scatterring rate at visible ray 400 ~ 800nm.
Use the light-scattering material of above-mentioned mixed light diffusant, calculate by mass percentage, comprising: mixed light diffusant is 2.2% ~ 19.2%; Macromolecule resin is 80.77% ~ 97.75%.The agent of mixing light scattering material adds polycarbonate, synthetic glass PMMA, or in acrylonitritrile-styrene resin AS, can be dispersed in resin uniformly, the light injected can pass these transparent balls, penetrates again, make pointolite become area source in transparent ball through refraction many times, expand light-emitting area, and make light become very soft; Simultaneously light can penetrating light diffusant spheroid, and make the loss of light few, therefore light diffusing agent serves even light, the effect of printing opacity.
Prepare a method for light-scattering material, comprise the following steps:
A, by rare earth oxide material, titanate material and Mica Group Minerals fully mix, and are mixed with mixed light diffusant A1;
B, be that 2.2% ~ 19.2%:80.77% ~ 97.75% takes by mass percentage by described mixed light diffusant A1 and macromolecule resin, add in super mixer and mix, obtain mixture B1;
C, throw in forcing machine by described mixture B1, through melt extruding, granulation, obtains molten mixture C1;
D, the described molten mixture C1 after extruding is carried out pelletizing through overcooling obtain containing light-scattering material master batch.
Preferably, described macromolecule resin is one or more of polycarbonate, acrylonitritrile-styrene resin AS and synthetic glass PMMA.PC has good light transmission, and visible light transmittance rate reaches about 90%; PMMA is macromolecule transparent material the most excellent at present, and visible light transmissivity reaches 92%, also higher than the transparence of glass; AS resin is that current production rate is maximum, and most widely used polymkeric substance has excellent mechanical property.
Preferably, described forcing machine is twin screw extruder.Under identical extrusion capacity, material residence time in twin screw extruder is short, and therefore twin screw extruder is applicable to processing heat-sensitive material; Also having specific power consumes low, the advantages such as exhaust performance is good.
Preferably, the temperature controlling range of described twin screw extruder is 220 DEG C ~ 300 DEG C.The temperature of described twin screw extruder is very crucial for the quality of feed particles.If the too high meeting of temperature causes particle to turn to be yellow, temperature is too low can affect throughput rate and quality product.
Preferably, described in be cooled to water-bath cooling, the temperature controlling range of water-bath is 40 DEG C ~ 60 DEG C.Molten mixture can be made to be heated evenly by water-bath cooling, the temperature difference is little, and slow down melting process, is convenient to observe and pelletizing.
Wherein, Mica Group Minerals is mixture, and the chemical formula of its main component can be expressed as K (Mg, Fe, Al)
2(Si, Al)
4o
10(OH)
2.It has good chemical stability and optical characteristics, has excellent scattering property especially to visible light part, has good absorption effect simultaneously, can play the function extending plastics work-ing life to the ultraviolet that wavelength is less than 400nm.On the one hand, according to the display of Raman spectrum, Mica Group Minerals material has good phonon coupling effect, for raising plastic heat radiation performance, there is good effect, on the other hand, this material has laminate structure, is easily stripped and processes, and adds the mechanical stretch performance that stratiform mica is conducive to improving material.
Therefore the present invention makes full use of the cost advantage of mica and the good light scattering efficiency to visible ray, using it as one of light-scattering material main component, simultaneously because the material such as rare earth oxide and titanate has high light scatterring rate at visible ray 400 ~ 800nm, utilize the material such as rare earth oxide and titanate can solve in the low problem of the scattering of light rate of visible ray, improve the overall scattering property of described light-scattering material.
Light-scattering material of the present invention, main chemical compositions is Mica Group Minerals, as white mica, hydromica and sericite etc., be auxiliary to add the material such as rare earth oxide, titanate, the pointolite of LED can be converted into area source by the light-scattering material of blending ingredients, make it have better mist degree, higher light transmission, is applicable to the interior lighting market requirement.Preparation method of the present invention, simple to operate, raw material is easy to get, and cost is low, and process controllability is strong, can produce above-mentioned light-scattering material.
Accompanying drawing explanation
Fig. 1 spectrogram that diffuses that to be the wavelength of embodiment 1 be within the scope of 200 ~ 2500nm;
Fig. 2 spectrogram that diffuses that to be the wavelength of embodiment 2 be within the scope of 200 ~ 2500nm;
Fig. 3 spectrogram that diffuses that to be the wavelength of embodiment 3 be within the scope of 200 ~ 2500nm;
Fig. 4 spectrogram that diffuses that to be the wavelength of embodiment 4 be within the scope of 200 ~ 2500nm;
Fig. 5 spectrogram that diffuses that to be the wavelength of Mica Group Minerals be within the scope of 200 ~ 2500nm.
Embodiment
Technical scheme of the present invention is further illustrated by embodiment below in conjunction with accompanying drawing.
Embodiment 1
A, by 8gLa
2o
3(7.4%), 10gYb
2o
3(9.25%), 10gBaTiO
3and 80g white mica K (Mg, Fe, Al) (9.25%)
2(Si, Al)
4o
10(OH)
2(74.07%) fully mix, be mixed with mixed light diffusant A1;
B, 108g mixed light diffusant A1 (9.75%) and 1000g polycarbonate (90.25%) added in super mixer mix, obtain mixture B1;
C, throw in twin screw extruder by described mixture B1, the temperature controlling range of twin screw extruder is 220 DEG C ~ 300 DEG C, and through melt extruding, granulation, obtains molten mixture C1;
D, the described molten mixture C1 after extruding is carried out pelletizing through water-bath cooling (temperature controlling range of water-bath is 40 DEG C ~ 60 DEG C) obtain containing light-scattering material master batch.
As shown in Figure 1, test the diffuse reflection spectrum of described light-scattering material, it is greater than more than 85% in the specular reflectance excluded of visible ray 400 ~ 800nm.
Embodiment 2
A, by 20gLa
2o
3(24.69%), 1gY
2o
3(1.23%), 10gMgTiO
3and 50g sericite K (Mg, Fe, Al) (12.3%)
2(Si, Al)
4o
10(OH)
2(61.7%) fully mix, be mixed with mixed light diffusant A1;
B, 81g mixed light diffusant A1 (7.49%) and 1000g synthetic glass PMMA (92.50%) added in super mixer mix, obtain mixture B1;
C, throw in twin screw extruder by described mixture B1, the temperature controlling range of twin screw extruder is 220 DEG C ~ 300 DEG C, and through melt extruding, granulation, obtains molten mixture C1;
D, the described molten mixture C1 after extruding is carried out pelletizing through water-bath cooling (temperature controlling range of water-bath is 40 DEG C ~ 60 DEG C) obtain containing light-scattering material master batch.
As shown in Figure 2, test the diffuse reflection spectrum of described light-scattering material, it is greater than more than 92% in the specular reflectance excluded of visible ray 400 ~ 800nm.
Embodiment 3
A, by 15gY
2o
3(65.2%), 3gK
2tiO
3and 5g hydromica K (Mg, Fe, Al) (13.04%)
2(Si, Al)
4o
10(OH)
2(21.7%) fully mix, be mixed with mixed light diffusant A1;
B, 23g mixed light diffusant A1 (2.2%) and 1000g acrylonitritrile-styrene resin AS (97.75%) added in super mixer mix, obtain mixture B1;
C, throw in twin screw extruder by described mixture B1, the temperature controlling range of twin screw extruder is 220 DEG C ~ 300 DEG C, and through melt extruding, granulation, obtains molten mixture C1;
D, the described molten mixture C1 after extruding is carried out pelletizing through water-bath cooling (temperature controlling range of water-bath is 40 DEG C ~ 60 DEG C) obtain containing light-scattering material master batch.
As shown in Figure 3, test the diffuse reflection spectrum of described light-scattering material, it is greater than more than 90% in the specular reflectance excluded of visible ray 400 ~ 800nm.
Embodiment 4
A, by 28gGd
2o
3(11.76%), 10gSrTiO
3and 200g white mica K (Mg, Fe, Al) (4.2%)
2(Si, Al)
4o
10(OH)
2(84.03%) fully mix, be mixed with mixed light diffusant A1;
B, 238g mixed light diffusant A1 (19.2%) and 1000g polycarbonate (80.77%) added in super mixer mix, obtain mixture B1;
C, throw in twin screw extruder by described mixture B1, the temperature controlling range of twin screw extruder is 220 DEG C ~ 300 DEG C, and through melt extruding, granulation, obtains molten mixture C1;
D, the described molten mixture C1 after extruding is carried out pelletizing through water-bath cooling (temperature controlling range of water-bath is 40 DEG C ~ 60 DEG C) obtain containing light-scattering material master batch.
As shown in Figure 4, test the diffuse reflection spectrum of described light-scattering material, it is greater than more than 88% in the specular reflectance excluded of visible ray 400 ~ 800nm.
As shown in Figure 5, test the diffuse reflection spectrum of described Mica Group Minerals, its specular reflectance excluded at visible ray 400 ~ 800nm is about 78%.
In sum, shown by the test result of the diffuse reflection spectrum of visible ray 200 ~ 2500nm scope in above embodiment: 1, adopt the scattering of light rate of the light-scattering material ratio interpolation polycarbonate of the blending ingredients adding macromolecule resin synthetic glass PPMA greatly and be all greater than 90%; 2, adopt the light-scattering material of blending ingredients, the scattering of light rate of preparation is much larger than the scattering of light rate of single mica.Can obtain thus, adopt based on Mica Group Minerals, mixing other components is that the scattering of light rate that auxiliary light-scattering material prepares is higher, transparence and dispersion effect better.
Light-scattering material of the present invention not only utilizes the material such as rare earth and titanate to improve in the low situation of the scattering of light rate of visible ray, and one-component Mica Group Minerals can be solved there is the problem being less than 80% in the scattering of light rate of visible ray 400 ~ 800nm as light-scattering material, meet the demand in interior lighting market.
Below know-why of the present invention is described in conjunction with specific embodiments.These describe just in order to explain principle of the present invention, and can not be interpreted as limiting the scope of the invention by any way.Based on explanation herein, those skilled in the art does not need to pay performing creative labour can associate other embodiment of the present invention, and these modes all will fall within protection scope of the present invention.
Claims (10)
1. a mixed light diffusant, is characterized in that: calculate by mass percentage, comprising: Mica Group Minerals is 21.7% ~ 84.03%; Rare earth oxide material 11.76% ~ 65.2%; Titanate material 4.2% ~ 13.04%.
2. mixed light diffusant according to claim 1, is characterized in that: described Mica Group Minerals is one or more of white mica, hydromica or sericite.
3. mixed light diffusant according to claim 1, is characterized in that: described rare earth oxide material is La
2o
3, Y
2o
3, Gd
2o
3, Lu
2o
3, Eu
2o
3and Yb
2o
3one or more.
4. mixed light diffusant according to claim 1, is characterized in that: described titanate material is BaTiO
3, SrTiO
3, K
2tiO
3, MgTiO
3and TiO
2one or more.
5. use the light-scattering material as the mixed light diffusant in claim 1-4 as described in any one, it is characterized in that: calculate by mass percentage, comprising: mixed light diffusant is 2.2% ~ 19.2%; Macromolecule resin is 80.77% ~ 97.75%.
6. prepare a method for light-scattering material, it is characterized in that: comprise the following steps:
A, by rare earth oxide material, titanate material and Mica Group Minerals fully mix, and are mixed with mixed light diffusant A1;
B, be that 2.2% ~ 19.2%:80.77% ~ 97.75% takes by mass percentage by described mixed light diffusant A1 and macromolecule resin, add in super mixer and mix, obtain mixture B1;
C, throw in forcing machine by described mixture B1, through melt extruding, granulation, obtains molten mixture C1;
D, the described molten mixture C1 after extruding is carried out pelletizing through overcooling obtain containing light-scattering material master batch.
7. the preparation method of light-scattering material according to claim 6, is characterized in that: described macromolecule resin is one or more of polycarbonate, acrylonitritrile-styrene resin AS and synthetic glass PMMA.
8. the preparation method of light-scattering material according to claim 6, is characterized in that: described forcing machine is twin screw extruder.
9. the preparation method of light-scattering material according to claim 6, is characterized in that: the temperature controlling range of described twin screw extruder is 220 DEG C ~ 300 DEG C.
10. the preparation method of light-scattering material according to claim 6, is characterized in that: described in be cooled to water-bath cooling, the temperature controlling range of water-bath is 40 DEG C ~ 60 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610011227.5A CN105504755B (en) | 2016-01-06 | 2016-01-06 | A kind of light-scattering material and its preparation method of application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610011227.5A CN105504755B (en) | 2016-01-06 | 2016-01-06 | A kind of light-scattering material and its preparation method of application |
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| Publication Number | Publication Date |
|---|---|
| CN105504755A true CN105504755A (en) | 2016-04-20 |
| CN105504755B CN105504755B (en) | 2017-12-29 |
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ID=55713079
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|---|---|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112980125A (en) * | 2021-02-22 | 2021-06-18 | 安徽新涛光电科技有限公司 | Rayleigh scattering PMMA plate and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101241194A (en) * | 2007-02-07 | 2008-08-13 | 北京传世唯信科技有限责任公司 | Composition for light scattering membrane and light scattering membrane comprising same |
| EP2426186A1 (en) * | 2010-09-03 | 2012-03-07 | Hyun Seop Shim | LED light converting resin composition and LED member using the same |
-
2016
- 2016-01-06 CN CN201610011227.5A patent/CN105504755B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101241194A (en) * | 2007-02-07 | 2008-08-13 | 北京传世唯信科技有限责任公司 | Composition for light scattering membrane and light scattering membrane comprising same |
| EP2426186A1 (en) * | 2010-09-03 | 2012-03-07 | Hyun Seop Shim | LED light converting resin composition and LED member using the same |
Non-Patent Citations (1)
| Title |
|---|
| 徐佩弦: "《塑料制品设计指南》", 31 March 2007 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112980125A (en) * | 2021-02-22 | 2021-06-18 | 安徽新涛光电科技有限公司 | Rayleigh scattering PMMA plate and preparation method thereof |
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| Publication number | Publication date |
|---|---|
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Denomination of invention: A preparation method of light scattering material and its application Effective date of registration: 20220613 Granted publication date: 20171229 Pledgee: Bank of China Limited by Share Ltd. Foshan branch Pledgor: FOSHAN CARRO ELECTRICAL Co.,Ltd. Registration number: Y2022980007577 |
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