WO2011032358A1 - Plastic light-converting fluorescent granules and use thereof - Google Patents

Abstract

Plastic light-converting fluorescent granules are composed of fluorescent material, polymer resin and auxiliary agent, wherein the components and the mass percents thereof are as followings: fluorescent material 0.5%~75.0%, polymer resin 15.0%~99.0%, auxiliary agent 0.5%~10.0%, wherein the fluorescent material is aluminate fluorescent material, silicate fluorescent material, silicone nitride fluorescent material, sulfur oxide fluorescent material or the combination of two thereof, which is excited by blue light LED having emission spectrum in the range of 440~475 nm as excitation light source, obtaining emission spectrum of at least one peak value in the range of 525~650 nm; the light from the fluorescent material is combined with the light from blue light LED into white light or other color light; the polymer resin is poly(methacrylic acid) resin, polycarbonate, ethylene-vinyl acetate copolymer or combination thereof; the auxiliary agent is erucylamide, N,N-ethylene bis-stearamide, liquid paraffin, polyethylene wax or combination thereof. The granules can be processed into plastic lens, lens element or lamp housing for LED lamp or can be processed into plastic parts for luminous indicator.

Description

 Plastic light conversion fluorescent granules and application thereof

Technical field

 The present invention relates to the field of optoelectronic display and illumination technology, and relates to a plastic light-converting light-emitting device for a light-emitting device including an LED backlight and illumination, and particularly relates to a plastic light-converting fluorescent material for manufacturing a plastic light-converting light-emitting device, that is, Plastic light-converting fluorescent pellets made of fluorescent materials, auxiliaries and polymer resins. Background technique

 Conventional lighting sources mostly use incandescent lamps as light-emitting elements. Light-emitting diodes (LEDs) are gradually replacing incandescent lamps as new light sources due to their advantages of energy saving, long working life and low operating voltage.

 The existing light-emitting diode generally adopts a structure of a light-emitting chip + a light-emitting fluorescent material, that is, a yellow-emitting fluorescent material is coated on a light-emitting surface of a light-emitting chip emitting blue light, and when the light-emitting chip is lit, the blue light emitted by the light-emitting chip will emit light. The fluorescent material produces yellow light, and the blue light and the yellow light mix to form white light. The manufacturing process mainly adopts the dispensing process. The structure and its manufacturing process mainly have the following shortcomings: 1 low production efficiency and high labor cost; 2 the coating quality of the luminescent fluorescent material on the light-emitting chip is difficult to control, which is easy to cause Uneven lighting, blue defects, dark spots and other defects; 3 easy to produce bubbles and product defects, product rejection rate is high; 4 luminescent fluorescent materials in the polymer resin is prone to precipitation, resulting in uneven dispersion, light conversion effect is not good.

Chinese invention patent CN1858920A "A White LED Lamp Packaging Method" introduces and discloses a white LED lamp packaging method. The patent mixes a luminescent fluorescent material with a plastic resin, and uses a casting method to form a plastic lens housing at a time. Compared with the traditional dispensing process, the method can improve the production efficiency and reduce the labor cost. Because the particle size of the luminescent fluorescent material is small, it is difficult to mix with the plastic resin, and the mixture is difficult. The process is cumbersome, dust is easy to generate, the operating environment is not good, and the cleanliness of the LED products is affected. In the injection molding process in which the fluorescent material and the plastic resin are directly mixed, the fluorescent material and the plastic resin and the device are mutually exchanged. Friction, the processed parts are particularly easy to blacken, affecting the brightness and light conversion effect. At the same time, this patent only introduces a method for manufacturing white LED lamps, and does not mention the types and amounts of fluorescent materials used. The relationship between fluorescent materials and brightness is not discussed.

 Chinese invention patent CN1 160730 "A luminescent plastic and its manufacturing method" introduces and discloses a manufacturing method of luminescent plastic material, and the luminescent material described in the patent is a long afterglow luminous material, and its main purpose is to manufacture various kinds of materials. Luminous switch and fire protection mark, this long afterglow material is not suitable as a light conversion material, and is not suitable for manufacturing LED lamps and light conversion devices, and the patent does not adopt an effective method to solve the uneven dispersion when the luminescent material and the polymer resin are mixed. And the problem of discoloration of the product.

 Chinese invention patent CN1 120207C "Luminous plastic masterbatch and its preparation method" introduces and discloses a manufacturing method of luminescent plastic masterbatch, which can solve the problem of uneven dispersion when luminescent material and resin are mixed, but the polymer resin used therein For soft polymer carrier resin, EVA or PE soft polymer resin is mainly used to make luminescent plastic masterbatch, instead of PMMA or PC type polymer resin suitable for LED lens, and mentioned in the patent The luminescent material is a long afterglow luminous material, not a luminescent fluorescent material applied to LED illumination. The structure and use of the two materials are fundamentally different. The luminescent plastic masterbatch is mainly used for manufacturing various luminous plastic products, having a dark place. The function of illuminating, including luminous switches and handicrafts, is not suitable for LED lamps, whether it is carrier resin or luminescent materials.

Therefore, there is no effective way to replace the traditional LED dispensing process in the prior art, so there is still a need in the art for materials and methods suitable for replacing the conventional LED dispensing process. Summary of the invention

 In view of the above drawbacks of the prior art, the object of the present invention is to combine a blue light-excited luminescent fluorescent material with a polymer resin and an auxiliary agent to form a plastic light-converting fluorescent granule, which can be directly processed by a plastic light-converting fluorescent granule. The plastic lens, the lens component or the outer casing of the lamp in various LED lamps can also process the plastic fittings of the light-emitting indicating devices in various electronic devices, instruments and the like.

 The present invention achieves the above object by providing a plastic light-converting fluorescent granule characterized in that the plastic light-converting fluorescent granule is composed of a fluorescent material, a polymer resin and an auxiliary agent, and the components and mass percentages are as follows:

 Fluorescent material 0. 5 ~ 75. 0% polymer resin 15. 0 ~ 99. 0% auxiliary agent 0. 5% ~ 10. 0% of which: the fluorescent material is aluminate fluorescent material, silicate fluorescent material a combination of one or both of a silicon nitride fluorescent material and a sulfur oxide fluorescent material; it is excited by a blue LED having an emission spectrum of an excitation source in the range of 440 to 475 nm, and exciting at least one peak wavelength at 525 ~ 650nm emission spectrum; the light emitted by the fluorescent material is combined with the light emitted by the blue LED to form white light or other color of light; the polymer resin is polyacrylamide resin, polycarbonate or ethylene-acetic acid a vinyl ester copolymer; the adjuvant is erucamide, N, N-ethylene bis stearamide, liquid paraffin or polyethylene wax.

 In the plastic light-converting luminescent pellet of the present invention, the polymer resin is preferably polymethyl methacrylate or polycarbonate. The present invention also provides a method of preparing the plastic light-converting fluorescent granules, comprising the following sequential steps:

Providing a fluorescent material, the fluorescent material being an aluminate fluorescent material, a silicate fluorescent a combination of one or both of a light material, a silicon nitride fluorescent material, and a sulfur oxide fluorescent material;

 Dissolving a silane coupling agent in diphenylbenzene to obtain a silane coupling agent solution;

 Spraying the coupling agent solution into the fluorescent material using a spray device to obtain the treated fluorescent material;

 The treated fluorescent material, the polymer resin and the auxiliary agent are uniformly mixed according to the ratio to obtain a homogeneous mixture;

 Adding the homogeneous mixture to an extruder, and extruding while heating to obtain a strip; and

 The strip was cut into a granulated material by a pelletizer to obtain a plastic light-converting fluorescent granule.

 In the above preparation method, the amount of the silane coupling agent accounts for the fluorescent material

5质量质量。 The mass of 0.5% by mass of the fluorescent material, and most preferably 0.5% by mass of the fluorescent material. /. .

The plastic light-converting fluorescent granule of the invention has various uses, for example, the plastic light-converting fluorescent granule can directly process the plastic lens, the lens component or the outer casing of the luminaire in various LED luminaires, and can also process the illuminating indicating device. Plastic parts, the above-mentioned parts processed with plastic light-converting fluorescent pellets have a light-converting function, which is converted into white light or other color light after being excited by blue light, and finally made into white LED lamps and illuminating indicating devices, or other colors. Luminaires and pointing devices. The plastic light-converting fluorescent granule of the invention is suitable for replacing the traditional LED packaging process, selecting a polymer resin suitable for the LED luminaire, and adopting a special method for treating the fluorescent material, successfully using the polymer resin, the auxiliary agent and the fluorescent material. The plastic light-converting fluorescent granules are combined to avoid uneven dispersion in processing and blackening of the product, and the plastic light-converting fluorescent granules can be directly used for manufacturing LED lamps and indicating devices. Replacing traditional light sources and technologies, energy saving and environmental protection, this product can promote the further development of semiconductor lighting technology and large-scale industrialization. detailed description

 The plastic light-converting fluorescent granule of the present invention is composed of a fluorescent material, a polymer resin and a co-agent, and the components and mass percentages are as follows:

 Yingxian material 0.5~ 75.0%

 Polymer resin 15.0~ 99.0% Additive 0.5~ 10.0%

Wherein: the fluorescent material is excited by a blue LED having an emission spectrum of the excitation light source in the range of 440 to 475 nm, and at least one emission spectrum having a peak wavelength in the range of 525 to 650 nm is excited;

 The light emitted by the fluorescent material is combined with the light emitted by the blue LED to form white light or other color light. The fluorescent material may be an aluminate fluorescent material, a silicate fluorescent material, a silicon nitride fluorescent material, and a sulfur oxide fluorescent material. One or a combination of several.

 The main chemical composition of the aluminate fluorescent material is expressed as:

aR ₂ 0 ₃ 'R' ₂ 0 ₃ : xCe, yLi, zF;

 1 is a combination of one or more elements of ¥, Tb, Gd;

R ⁷ is one of Al, Ga or a combination of two elements;

 a, x, y, z are molar coefficients, 0.45<a<0.65; 0.0<x<0.04; 0.0<y<0.04; 0.0<z<0.2; the emission main peak wavelength of the material varies with the composition in the range of 525 ~ 560nm ;

 The main chemical composition of the silicate fluorescent material is expressed as:

bM0-Si0 ₂ : xEu, yLi, zF;

 M is a combination of one or more of Sr, Ca, Ba, Mg;

b, x, y, z are molar coefficients, 1.4 < b <3.1; 0.015 < x <0.1; 0.0 < y <0.05; 0.0<z<0.25; The main peak wavelength of the material varies with the composition ranging from 525 to 580 nm.

 The main chemical composition of the silicon nitride fluorescent material is expressed as:

(SreCat-e) 2-xSi ₅ N ₈ : Eu _x , Li _y , F _z ;

 e, x, y, z are molar coefficients, 0.1 <e< l; 0.01<x< 0.1; 0.0 < y< 0.1; 0.0<z< 0. 5; the main peak wavelength of the material with the composition in the range of 580 ~ 650nm Internal change

 The main chemical composition of the sulfur oxide fluorescent material is expressed as:

Y ₂ -x0 ₂ S: Eux, Mg _y , Ti _z , Li _p , F _Y ;

 x, y, z, P, Y are molar coefficients, 0.01 <x< 0.1; 0.005 <y< 0.02; 0.05<z< 0.25; 0.0< β < 0.1; 0.0< γ < 0.5; the main peak wavelength of the material The composition varies from 610 to 630 nm;

 The various luminescent fluorescent materials described above have different characteristics of body color and luminescent color, and can be selected according to different conditions in the manufacture of plastic light-converting fluorescent granules, for example, plastics made of aluminate luminescent fluorescent materials. Light-converting fluorescent granules, wherein the light emitted by the yellow aluminate luminescent fluorescent material and the light emitted by the blue LED are combined into white light to further realize LED white light illumination; plastic light conversion made of silicate luminescent fluorescent material is selected Fluorescent granules, wherein the silicate luminescent fluorescent material adapts to the wide range of the chip, and the luminescent fluorescent material can be formulated according to the characteristics of the chip to manufacture various plastic light-converting fluorescent granules, further producing different LED products and different A color illuminating indicating device.

Select silicate, aluminate luminescent fluorescent material as orange, yellow luminescent fluorescent material, select silicon nitride, sulphur oxide luminescent fluorescent material as red luminescent fluorescent material, yellow luminescent fluorescent material, orange luminescent fluorescent material and red luminescent The combination of fluorescent materials, combined with adjustable color coordinates, color temperature and color rendering index, is suitable for a variety of purposes, using fluorescent materials that emit yellow light and emit red The color light fluorescent material is used in combination to increase the color rendering index and obtain a white light with a high color rendering index, making it suitable for use in a light-emitting device requiring a high color rendering index.

 The polymer resin may be selected from the group consisting of acrylic resin, polycarbonate, and ethylene-vinyl acetate copolymer. The selection of these resins is very different from that of the commonly used color masterbatch, especially acrylic resin and poly. Carbonate, these two resins are especially suitable for plastic lenses in LED lamps, and have good optical properties. However, when these two resins are mixed with fluorescent materials to make pellets, they are difficult to manufacture, and they are granulated by ordinary methods. When the fluorescent material is easily discolored during the mixing and extrusion process, the color of the extruded product is unstable. To solve these problems in the processing, a suitable lubricating dispersant is selected and the fluorescent material is surface-treated.

 Lubricating dispersants are selected including: erucamide, N, N-ethylene bis stearamide, liquid paraffin, polyethylene wax. The addition of these lubricating dispersants makes the luminescent fluorescent material more uniform in the product, further avoiding the darkening of the granules during processing, and the brightness of the luminaire or display device processed therewith is also improved.

The preparation method of the plastic light conversion pellets is the extrusion granulation method: before the extrusion granulation, the surface treatment of the fluorescent material is performed, and the silane coupling agent is selected in the treatment, and the amount of the silane coupling agent accounts for the fluorescent material. The mass percentage is 0.5%, the silane coupling agent is dissolved in diphenylbenzene, and the coupling agent is sprayed on the fluorescent material by a spray device to prepare a processed fluorescent material, which is to be used in the next step. The fluorescent materials mentioned in the following examples are all fluorescent materials which have been pretreated in this manner. Extrusion granulation is to disperse and mix the treated fluorescent material, polymer resin and auxiliary agent according to the ratio, add it to the extruder, heat it through the heating system of the extruder, and pass the rotating twin-screw pair. After the material is mixed and plasticized, the material is conveyed to the front, reaches the head of the extruder, and the strip is extruded from the head, and finally cut into granular materials by the pelletizer. The processing temperature of the extruder heating system is related to the resin selected. The processing temperature of each plastic light-converting fluorescent pellet depends on the processing temperature of the polymer resin. The processing temperature range is controlled in the range of 80 ~ 300. The advantages of the extrusion granulation method are mature technology and high production efficiency.

 The invention has the beneficial effects that: the fluorescent material, the polymer resin and the auxiliary agent are successfully combined into a plastic light-converting fluorescent granule to avoid discoloration during processing, and various parts processed by the plastic light-converting fluorescent granule are processed. It has light conversion function, which is converted into white light after being excited by blue light. It can also adjust the composition of plastic light-converting fluorescent particles according to the requirements of the application. After blue light excitation, it can be converted into other color light to achieve color diversity. For the purpose of use, it is possible to make various kinds of plastic light-converting fluorescent materials suitable for different purposes by changing the formula, and further to make various plastic light-converting light-emitting parts, and finally to make white LED lamps, light-emitting indicating devices or other colors. Lamps and indicating devices.这样In this way, the phosphor and the polymer resin for making the plastic lens are combined, thereby eliminating the dispensing process of the phosphor powder, greatly reducing the process steps, the production efficiency is high, the production automation is easy, and the operating environment is improved. It is important that the luminescent fluorescent material is dispersed in the polymer resin, which effectively avoids the problem that bubbles are generated and precipitates easily in the transfer process, and the uniformity of light emission of the light-emitting device made by the device is greatly improved and the light conversion effect is improved. Good, flexible and changeable products.

 The invention is illustrated by the following specific examples. Example 1: The raw material formula of the plastic light-converting fluorescent pellets is as follows:

 Polymer resin: Polymethyl methacrylate (PMMA) 93. 0% Treated fluorescent material: Yellow aluminate fluorescent material

0. 58Υ ₂ 0 ₃ ·Α1 ₂ 0 ₃ ·0. lGa ₂ 0 ₃ : 0. 008Ce, 0. 004Li , 0. 02F 5. 0 % Auxiliary: N, N-ethylene bis stearamide 1. 0 %

 Polyethylene wax

将处理过的荧光材料、 聚合物树脂和助剂按照配比经分散混 合均勾， 加入到挤出机中， 通过挤出机的加热系统进行加热， 加 工温度为 150 ~ 240X:， 同时通过旋转的双螺杆对物料进行混合塑 化之后将物料输送到前方， 到达挤出机的机头处， 从机头处挤出 条状物， 最后由切粒机切成粒状物料。 其中使用硅烷偶联剂处理 荧光材料： 将硅烷偶联剂溶于适量二甲苯中， 硅烷偶联剂的用量 占荧光材料的 0. 5质量％， 用喷雾装置将偶联剂溶液均勾地喷在荧 光材料中， 得到处理过的荧光材料。 该产品经注射成型可制成具 有光转换功能的塑料制件， 该制件用于制造白光 LED灯具。 实施例 2: 用挤出造粒法制造塑料光转换荧光粒料， 配方如下： 聚合物树脂： 聚合聚碳酸酯 （PC ) Liquid paraffin

The treated fluorescent material, polymer resin and auxiliary agent are dispersed and mixed according to the ratio The hook is added to the extruder and heated by the heating system of the extruder. The processing temperature is 150 ~ 240X: At the same time, the material is mixed and plasticized by the rotating twin screw, and the material is conveyed to the front to reach the extrusion. At the head of the machine, the strip is extruded from the head and finally cut into pellets by a pelletizer. The silane coupling agent is used to treat the fluorescent material: the silane coupling agent is dissolved in an appropriate amount of xylene, the amount of the silane coupling agent is 0.5% by mass of the fluorescent material, and the coupling agent solution is sprayed by a spray device. In the fluorescent material, a treated fluorescent material is obtained. The product can be injection molded into a plastic part with light conversion function, which is used to manufacture white LED lamps. Example 2: Plastic optical conversion fluorescent granules were produced by extrusion granulation, and the formulation was as follows: Polymer resin: Polymerized polycarbonate (PC)

 Treated fluorescent material: yellow aluminate fluorescent material

0. 56Υ ₂ 0 ₃ · Α1 ₂ 0 ₃ · 0. lGd ₂ 0 ₃ : 0. 04Ce, 0.

 Auxiliary: N, N-ethylene bis stearamide

 Erucamide

 Liquid paraffin

The treated fluorescent material, the polymer resin and the auxiliary agent are uniformly dispersed and mixed according to the ratio, added to the extruder, and heated by the heating system of the extruder, and the processing temperature is 150-250t; After the twin-screw mixes and plasticizes the material, the material is conveyed to the front, reaches the head of the extruder, and the strip is extruded from the head, and finally cut into granular materials by the pelletizer. The fluorescent material was treated as described in Example 1. The product can be injection molded into a plastic part with light conversion function, which is used to manufacture white LED lamps. Example 3: Plastic light-converting fluorescent granules were produced by extrusion granulation, and the formulation was as follows: Polymer resin: Polymethyl methacrylate (PMMA) 47. 5% Treated fluorescent material:

 Yellow aluminate fluorescent material

0. 58Υ ₂ 0 ₃ ·Α1 ₂ 0 ₃ ·0. lGa ₂ 0 ₃ : 0. 008Ce, 0. 004Li , 0. 02F 25. 0% orange red silicate fluorescent material

1· 4SrO · 0· 2BaO · S i0 ₂ : 0. 05Eu, 0. 005Li 25. 0% Additives:

 N, N-ethylene bis-stearamide 1. 0% erucamide 0. 5% polyethylene wax 0. 5% liquid paraffin 0. 5% The treated fluorescent materials, polymer resins and additives are in accordance with the ratio After being uniformly dispersed and mixed, it is added to the extruder and heated by the heating system of the extruder. The processing temperature is 150-240. At the same time, the material is mixed and plasticized by the rotating twin-screw, and then the material is conveyed to the front to reach the extrusion. At the head of the machine, the strip is extruded from the head and finally cut into pellets by a pelletizer. The fluorescent material was treated as described in Example 1. The granule has a high content of fluorescent material and can be used as a plastic light-converting luminescent masterbatch. When used, the granule is mixed with a PMMA resin and then processed, and a plastic part having a light-converting function can be produced by injection molding. The parts are used to make warm white LED luminaires or pointing devices. Example 4: Plastic light-converting fluorescent granules were produced by extrusion granulation, and the formulation was as follows: Polymer resin: Poly(meth) methacrylate (P Li A ) 47. 5% Treated fluorescent material:

 Orange red silicate fluorescent material

1· 4SrO · 0. 2BaO · S i0 ₂ : 0. 05Eu, 0. 005Li 50. 0% Additives: N, N-ethylene bis-stearamide 1. 0% erucamide 0. 5% polyethylene wax 0. 5% liquid paraffin 0. 5% The treated fluorescent materials, polymer resins and additives are in accordance with the ratio After being uniformly dispersed and mixed, it is added to the extruder and heated by the heating system of the extruder. The processing temperature is 150 ~ 240 η. At the same time, the material is mixed and plasticized by the rotating twin screw, and the material is conveyed to the front to reach the extrusion. At the head of the machine, the strip is extruded from the head and finally cut into pellets by a pelletizer. The fluorescent material was treated as described in Example 1. The pellets have a high content of fluorescent materials and can be used as a plastic light-converting luminescent masterbatch. Customers can mix the pellets with pure bismuth resin to produce orange LED products or indicating devices. Example 5: Plastic light-converting fluorescent granules were produced by extrusion granulation, and the formulation was as follows: Polymer resin: decyl acrylate (P title A) 88. 0% Treated fluorescent material:

Yellow aluminate fluorescent material 0. 65Tb ₂ 0 ₃ -A l ₂ 0 ₃ : 0. 02Ce 9. 99% red silicon nitride fluorescent material

(Sr ₀ . ₅ Cao. ₅ ) ₂ -yS i ₅ N ₈ : 0. 05Eu, 0. 003L i , 0. 001 0. 01% Additives:

N, N-ethylene bis stearamide 1. 0% polyethylene wax 0. 5% liquid paraffin 0. 5% The treated fluorescent material, polymer resin and auxiliary agent are dispersed and uniformly mixed according to the ratio, added to In the extruder, heating is carried out by the heating system of the extruder, the processing temperature is 150 ~ 240, and the material is mixed by the rotating twin screw. After the transfer, the material is conveyed to the front, reaches the head of the extruder, and the strip is extruded from the head, and finally cut into granular materials by the pelletizer. The fluorescent material was treated as described in Example 1. The pellet is mixed with a yellow aluminate fluorescent material and a red silicon nitride fluorescent material for producing a white LED product having a high color rendering index. Example 6: Plastic light-converting fluorescent pellets were produced by extrusion granulation, and the formulation was as follows: Polymer resin: Polycarbonate (PC) 88. 0% Treated fluorescent material:

 Yellow aluminate fluorescent material

0. 58Υ ₂ 0 ₃ ·Α1 ₂ Ο ₃ ·0. lGa ₂ 0 ₃ : 0. 008Ce, 0. 004Li , 0. 02F 9. 99% red silicon nitride fluorescent material

(Sro. sCao. s) 2- _y S i ₅ N ₈ : 0. 05Eu, 0. 003Li, 0. 001F 0. 01% Additives:

N, N-ethylene bis stearamide 1. 0% polyethylene wax 0. 5% liquid paraffin 0. 5% The treated fluorescent material, polymer resin and auxiliary agent are dispersed and mixed according to the ratio, added Into the extruder, heating is carried out by the heating system of the extruder, the processing temperature is 150 ~ 250, and the material is mixed and plasticized by the rotating 5 screw, and then the material is conveyed to the front and reaches the head of the extruder. The strip is extruded from the head and finally cut into pellets by a pelletizer. The silane coupling agent is used to treat the fluorescent material: the silane coupling agent is dissolved in an appropriate amount of diphenylbenzene, and the amount of the silane coupling agent is 1% by mass of the fluorescent material, and the coupling agent solution is sprayed on the spray device. In the fluorescent material, the treated fluorescent material is obtained. The pellet is mixed with a yellow aluminate fluorescent material and a red silicon nitride fluorescent material for producing a white LED product having a high color rendering index. Example 7: Plastic light-converting fluorescent pellets were produced by extrusion granulation, and the formulation was as follows: Polymer resin: Polymethyl methacrylate (PMMA) 68. 0% Treated fluorescent material: Yellow silicate fluorescent material

0. lCaO.l. 5SrO 0. 4BaO 0. lMgO S i0 ₂ : 0. lEu, 0. 2Li, 0. 05F 30. 0% Additives:

 N, N-ethylene bis-stearamide 1· 0% polyethylene wax 0. 5% liquid paraffin 0. 5% The treated fluorescent material, polymer resin and auxiliary agent are dispersed and uniformly mixed according to the ratio, added to In the extruder, heating is carried out by the heating system of the extruder, the processing temperature is 150 ~ 240 Χ, and the material is mixed and plasticized by the rotating twin screw, and then the material is conveyed to the front and reaches the head of the extruder. The strip is extruded from the head and finally cut into pellets by a pelletizer. The silane coupling agent is used to treat the fluorescent material: the silane coupling agent is dissolved in an appropriate amount of xylene, the amount of the silane coupling agent is 3% by mass of the fluorescent material, and the coupling agent solution is sprayed on the fluorescent device by a spray device. In the material, the treated fluorescent material is obtained. The pellets have a high content of fluorescent materials and can be used as a plastic light-converting luminescent masterbatch. The pellets can be mixed with pure ruthenium ruthenium resin to produce yellow or white LED products. Example 8: Plastic light-converting fluorescent pellets were produced by extrusion granulation, and the formulation was as follows: Polymer resin: Polymethyl methacrylate (PMMA) 88. 5% Treated fluorescent material:

 Silicate green fluorescent material

0. 9SrO-l. IBaO-O. lMgO-S i0 ₂ : 0. 2Eu, 0. OO lLi , 0. 05F; 4. 0%

Sulfur oxide red fluorescent material Y0 ₂ S: 0. 3Eu, 0. 02Mg, 0. 15Ti ; 6. 0% Additives:

 N, N-ethylene bis-stearamide 1. 0% liquid paraffin 0. 5% The treated fluorescent material, polymer resin and auxiliary agent are dispersed and uniformly mixed according to the ratio, added to the extruder, and squeezed The heating system of the machine is heated, the processing temperature is 150 ~ 240, and the material is mixed and plasticized by the rotating twin screw, then the material is conveyed to the front, reaches the head of the extruder, and the strip is extruded from the head. Finally, the pelletizer cuts into granular material. The fluorescent material was treated as described in Example 1. The pellets are used in combination with a silicate green fluorescent material and a sulfur oxide red fluorescent material for the production of white LED articles or indicating devices. Example 9: Plastic light-converting fluorescent pellets were produced by extrusion granulation, and the formulation was as follows: Polymer resin: Polymethyl methacrylate (P匪 A ) 99. 0% Treated fluorescent material:

 Aluminate yellow fluorescent material

0. 56Υ ₂ 0 ₃ · Α1 ₂ 0 ₃ · 0. lGd ₂ 0 ₃ : 0. 04Ce, 0. 02F 0. 5 % Additives:

Liquid paraffin: 0. 5% The treated fluorescent material and polymer resin are uniformly dispersed and mixed according to the ratio, added to the extruder, heated by the heating system of the extruder, and simultaneously passed through the rotating twin-screw material. After the mixed plasticization, the material is conveyed to the front, reaches the head of the extruder, and the strip is extruded from the head, and finally cut into granular materials by a pelletizer. The fluorescent material was treated as described in Example 1. The processing temperature depends on the processing temperature of P awake A resin, and the processing temperature range is from 150 to 240 Ι. The pellets are used to process LED luminaires or pointing devices. Example 10: Plastic light-converting fluorescent granules were produced by extrusion granulation, and the formulation was as follows: Polymer resin: Ethylene-vinyl acetate copolymer (EVA) 15. 0% Treated fluorescent material:

 Silicate yellow fluorescent material

0. lCaO-1. 5SrO-0. 4BaO-0. lMgO-S i0 ₂ : 0. lEu, 0. 2Li, 0. 05F 75. 0% Additives:

 N, N-ethylene bis-stearamide 2. 0% polyethylene wax 7. 5% liquid paraffin 0. 5% The treated fluorescent material, polymer resin and auxiliary agent are dispersed and uniformly mixed according to the ratio, added to In the extruder, heating is performed by the heating system of the extruder, and the processing temperature range is controlled within the range of 80 to 210X. At the same time, the material is mixed and plasticized by the rotating twin screw, and then the material is sent to the front to reach the extrusion. At the head of the machine, the strip is extruded from the head and finally cut into pellets by a pelletizer. The fluorescent material is treated as described in Example 1. The content of the fluorescent material in the pellet is high and can be used as The plastic light-converting luminescent masterbatch is used. When used, the masterbatch is mixed with P-A or PC resin to produce white LED products or indicating devices.

Claims

 A plastic light-converting fluorescent granule characterized in that the plastic light-converting fluorescent granule is composed of a fluorescent material, a polymer resin and an auxiliary agent, and each component and mass percentage are as follows:  Fluorescent material 0· 5% ~ 75· 0% Polymer resin 15. 0% ~ 99. 0% Auxiliary 0. 5% ~ 10. 0% Where: The fluorescent material is an aluminate fluorescent material, silicate a combination of one or both of a fluorescent material, a silicon nitride fluorescent material, and a sulfur oxide fluorescent material; the excitation light source is excited by a blue light LED having an emission pupil in the range of 440 to 475 nm, and at least one peak is excited. An emission spectrum having a wavelength in the range of 525 to 650 nm; the light emitted by the fluorescent material is combined with the light emitted by the blue LED to form white light or light of other colors;  The polymer resin is a polymethacrylic resin, a polycarbonate or an ethylene-vinyl acetate copolymer or a combination thereof;  The adjuvant is erucamide, N, N-ethylene bis stearamide, liquid paraffin, or polyethylene wax or a combination thereof. 2. A plastic light-converting luminescent granule according to claim 1 wherein the polymeric resin is polymethyl methacrylate or polycarbonate. 3. The method of preparing a plastic light-converting fluorescent granule according to claim 1, comprising the following sequential steps: Providing a fluorescent material, the fluorescent material is one or two of an aluminate fluorescent material, a silicate fluorescent material, a silicon nitride fluorescent material, and a sulfur oxide fluorescent material The combination;  Dissolving a silane coupling agent in xylene to obtain a silane coupling agent solution;  Spraying the coupling agent solution into the fluorescent material using a spray device to obtain the treated fluorescent material;  The treated fluorescent material, the polymer resin and the auxiliary agent are uniformly mixed according to the ratio to obtain a homogenous mixture;  Adding the homogenous hook mixture to the extruder, and extruding while heating to obtain a strip;  The strip was cut into a granulated material by a pelletizer to obtain a plastic light-converting fluorescent granule. The silane coupling agent is used in an amount of 0.5% by mass to 3% by mass based on the fluorescent material. 5. The method of claim 3, wherein the amount of the silane coupling agent is from 0.5% by mass to 1% by mass of the fluorescent material. 5质量质量。 The silane coupling agent is used in an amount of 0.5% by mass of the fluorescent material. 7. Use of a plastic light-converting fluorescent granule according to claim 1 for processing a plastic lens, a lens component or a housing of a luminaire in an LED luminaire. 8. Use of a plastic light-converting fluorescent granule according to claim 1 for processing a plastic fitting for an illuminating indicating device.