WO2018068178A1 - 反射板及装有该反射板的led平板灯 - Google Patents

反射板及装有该反射板的led平板灯 Download PDF

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WO2018068178A1
WO2018068178A1 PCT/CN2016/101656 CN2016101656W WO2018068178A1 WO 2018068178 A1 WO2018068178 A1 WO 2018068178A1 CN 2016101656 W CN2016101656 W CN 2016101656W WO 2018068178 A1 WO2018068178 A1 WO 2018068178A1
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light
led panel
plate
polycarbonate
benzene
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PCT/CN2016/101656
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English (en)
French (fr)
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尹学君
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尹学君
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Priority to PCT/CN2016/101656 priority Critical patent/WO2018068178A1/zh
Priority to CN201680026119.3A priority patent/CN107709453A/zh
Publication of WO2018068178A1 publication Critical patent/WO2018068178A1/zh

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/20—Compounding polymers with additives, e.g. colouring
    • C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
    • C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/20—Compounding polymers with additives, e.g. colouring
    • C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
    • C08L25/02—Homopolymers or copolymers of hydrocarbons
    • C08L25/04—Homopolymers or copolymers of styrene
    • C08L25/06—Polystyrene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
    • C08L51/04—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to rubbers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/08—Refractors for light sources producing an asymmetric light distribution
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2351/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
    • C08J2351/04—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to rubbers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2425/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers
    • C08J2425/02—Homopolymers or copolymers of hydrocarbons
    • C08J2425/04—Homopolymers or copolymers of styrene
    • C08J2425/06—Polystyrene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2469/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates
    • 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
    • C08K2003/2237—Oxides; Hydroxides of metals of titanium
    • C08K2003/2241—Titanium dioxide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V2200/00—Use of light guides, e.g. fibre optic devices, in lighting devices or systems
    • F21V2200/20—Use of light guides, e.g. fibre optic devices, in lighting devices or systems of light guides of a generally planar shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to the field of LEDs, and in particular to a reflector for an LED lamp and an LED panel lamp equipped with the reflector.
  • Reflective paper in the prior art has the drawbacks of water ripple and thermal expansion and contraction.
  • the defect of the water ripple means that during the use of the LED panel light, the plane corner of the reflective paper will be warped, not flat enough, and the middle position will be air-blasted, thereby forming a shape that looks like a ripple on the whole, It is a water ripple. Since the bulging part of the water ripple will be filled with air and the light guide plate is not attached, the whole LED panel light will have a bright and dark phenomenon when working, resulting in uneven light.
  • the defect of thermal expansion and contraction is that, due to the different temperatures used in the environment, such as cold winter heat, the material of the LED panel lamp has a thermal expansion and contraction reaction, and the temperature of the lamp body further aggravates the thermal expansion. The cold-shrinking reaction further exacerbates the defects of water ripple formation.
  • an object of the present invention is to provide a reflecting plate that overcomes water ripple and thermal expansion and contraction defects, and an LED panel lamp equipped with the reflecting plate.
  • a reflecting plate made of 40-60 wt% of benzene, 20-40 wt% of benzene, and 10-30 wt% of light-reflecting masterbatch; the light-reflecting masterbatch is composed of 80-90 wt% Made of carbonate, 5-10% by weight of dispersant and 5-10% by weight of titanium dioxide.
  • the reflector is also called a reflector.
  • the penetration of benzene and benzene is a common name in the technical field.
  • the benzene is a general-purpose polystyrene, the abbreviation is GPPS; the benzene is an impact-resistant polystyrene, and the English abbreviation is HIPS.
  • the function of trans-benzene and benzene change is to make the reflector have strong flexibility and high impact resistance, and cooperate with the light-reflecting master particle to have the effect of overcoming the water ripple phenomenon of the reflection surface.
  • the polycarbonate of the light-reflecting masterbatch itself has flame retardancy, impact resistance and heat resistance, and its impact resistance can synergize with the change of benzene and benzene; its heat resistance can resist the change of temperature and overcome the thermal expansion.
  • the function of the dispersant is to have better interfacial compatibility between the polycarbonate and the titanium dioxide, and to improve the dispersion uniformity of the titanium dioxide in the polycarbonate, thereby improving the reflectance.
  • Titanium dioxide has a good refractive index and is incorporated into polycarbonate. The increase in refractive index can increase the reflectance.
  • the dispersing agent is a silicone dispersing agent.
  • a polar dispersing agent at both ends, the polar group at one end can be fixed on the surface of titanium dioxide, and the polar group at the other end is compatible with polycarbonate to better disperse polycarbonate and titanium.
  • White powder is a silicone dispersing agent.
  • the titanium dioxide is rutile type titanium dioxide 2233.
  • This type of titanium dioxide has a higher refractive index than other types of titanium dioxide, and thus has a higher reflectance.
  • a formula amount of polycarbonate, a dispersant, and a titanium dioxide powder may be mixed in a high-speed mixer, and then melt-extruded and granulated.
  • the prepared light-reflecting masterbatch is further mixed with a modified amount of benzene and benzene to be melt-pressed or injection-molded into a plate, and cooled to obtain a reflecting plate.
  • An LED panel lamp comprising a frame, an LED lamp, a light guide plate, a diffuser plate and a reflector according to any one of the above aspects, wherein the LED lamp is disposed inside the frame, the diffusion plate, the light guide plate and The reflectors are sequentially mounted and mounted in the frame, and the LED lamps are located on two sides of the light guide plate; the light guide plate is provided with a plurality of bumps on a contact surface with the reflector .
  • the light conduction path is as follows: first, the light of the LED lamp is guided by the light guide plate, and the light guide plate is guided to the reflector from different directions through the bump, and the reflector reflects the light in the same direction, and then is led out through the light guide plate and diffused through the diffusion plate. And out.
  • the reflecting plate can overcome the water ripple and the thermal expansion and contraction defects, the light diffusion can be made more uniform and the luminous efficiency is better.
  • the diffusion plate is made of 40-60 wt% of benzene, 20-40 wt% of benzene, and 10-30 wt% of light diffusion masterbatch; the light diffusion masterbatch is 80-90 wt% Made of polycarbonate, 5-10% by weight of light diffusing agent and 5-10% by weight of flame retardant.
  • the function of benzene and benzene is to make the diffusion plate have strong flexibility and high impact resistance, and cooperate with the light diffusion masterbatch to have the effect of further overcoming the water ripple phenomenon, light diffusion.
  • the masterbatch polycarbonate itself has flame retardancy, impact resistance and heat resistance, and its impact resistance can synergize with benzene and benzene. Its heat resistance can resist temperature changes and overcome thermal expansion and contraction. The phenomenon;
  • the function of the light diffusing agent is to enhance the diffusibility and uniformity of light.
  • the light diffusing agent is a spherical fine powder of a silicone resin.
  • KMP-590 or MP-470 produced by Nippon Shinko Co., Ltd. may be selected, and the particle diameter is preferably 1-5 ⁇ m.
  • the polycarbonate is a bisphenol A type polycarbonate.
  • the flame retardant is a silicone flame retardant.
  • the silicone flame retardant and the silicone resin spherical micropowder are both silicone materials, which can be more easily blended on the bisphenol A type polycarbonate during preparation.
  • the silicone flame retardant is one or a mixture of two or more of polyphenylmethylsiloxane, polyphenylsilsesquioxane, and phenol-terminated dimethylsiloxane.
  • the light diffusing masterbatch is prepared by uniformly incorporating a light diffusing agent and a flame retardant into the polycarbonate. This allows the three raw materials to be crushed by an internal mixer and uniformly mixed in a high-speed mixer, and then melt-extruded and pelletized.
  • the prepared light-diffusing masterbatch is further mixed with a modified amount of benzene and benzene to be melt-pressed or injection-molded into a plate, and cooled to obtain a diffusion plate.
  • the light guide plate is made of optical grade polycarbonate.
  • the reflecting plate, the light guiding plate and the diffusing plate each contain a material of polycarbonate, and when the three are integrated into one body, they can be better adhered to each other without a gap, so that the light which is not caused by the air is not emitted. Uniform, that is, the water ripple and thermal expansion and contraction defects between each other are further eliminated.
  • the reflector of the invention and the LED panel lamp equipped with the reflector solve the defects of water ripple and thermal expansion and contraction, and are more energy-saving and environmentally friendly.
  • the LED panel lamp emits light evenly, and the luminous efficiency reaches over 96% within 20,000 hours.
  • the light guide conversion efficiency of the light guide plate of the LED panel lamp is 90-96%.
  • 1 is a cross-sectional structural view of an LED panel lamp
  • FIG. 2 is a schematic exploded view of an LED panel lamp.
  • the dispersant is a commercially available polar siloxane dispersant at both ends.
  • Titanium dioxide is rutile titanium dioxide 2233.
  • the polycarbonate is a bisphenol A type polycarbonate.
  • the white powder is then melt extruded and granulated.
  • the prepared light-reflecting masterbatch is further mixed with a modified amount of benzene and benzene to be melt-pressed or injection-molded into a plate, and cooled to obtain a reflecting plate.
  • a diffusing plate made of 50 wt% of benzene, 30 wt% of benzene, and 20 wt% of light diffusion masterbatch; the light diffusing masterbatch is made of 80 wt% polycarbonate, 10 wt% of light Made of a diffusing agent and 10% by weight of a flame retardant.
  • the light diffusing agent was KMP-590 and had a particle diameter of 3 ⁇ m.
  • the polycarbonate is a bisphenol A type polycarbonate.
  • the flame retardant is a silicone flame retardant polyphenylmethylsiloxane.
  • the three raw materials are crushed by an internal mixer and uniformly mixed in a high-speed mixer, and then melt-extruded and pelletized.
  • the prepared light-diffusing masterbatch is further mixed with a modified amount of benzene and benzene to be melt-pressed or injection-molded into a plate, and cooled to obtain a diffusion plate.
  • a light guide plate that is melt pressed or injection molded from an optical grade polycarbonate.
  • an LED panel lamp comprising a frame 1, an LED lamp 2, a reflector 3 made in Embodiment 1, a light guide plate 4 obtained in Embodiment 3, and a diffusion produced in Embodiment 2
  • the plate 5, the LED lamp 2 is disposed on the inner side of the frame 1, and the diffusion plate 5, the light guide plate 4 and the reflection plate 3 are sequentially stacked and mounted in the frame 1, and the LED lamp 1 is located on both sides of the light guide plate 4; the light guide plate 4
  • a plurality of bumps are provided on the contact surface 41 with the reflecting plate 3.
  • the conversion efficiency of the light guide plate is 96%
  • the reflectivity of the reflector is 97%
  • the luminous efficiency of the diffuser is 98%
  • the luminous efficiency of the entire LED panel lamp is over 96% within 20,000 hours.
  • the luminous efficiency is measured by the ratio of the luminous flux ⁇ emitted by a light source of an international standard to the electrical power P consumed by the light source.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
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Abstract

一种反射板（3）及装有反射板（3）的LED平板灯，反射板（3）是由40-60wt％的改苯、20-40wt％的透苯和10-30wt％的光反射母粒制成的；光反射母粒是由80-90wt％的聚碳酸酯、5-10wt％的分散剂和5-10wt％的钛白粉制成的。反射板（3）和装有反射板（3）的LED平板灯均解决了水波纹和热胀冷缩的缺陷，更节能环保；而且LED平板灯的导光板（4）的导光转换效率90-96％；LED平板灯发光均匀，发光效率在20000小时内达到96％以上。

Description

反射板及装有该反射板的LED平板灯 反射板及装有该反射板的LED平板灯
技术领域
本发明涉及LED领域，具体涉及一种用于LED灯的反射板及装有该反射板的LED平板灯。
背景技术
现在技术中的反光纸有水波纹和热胀冷缩的缺陷。该水波纹的缺陷是指，在LED平板灯的使用过程中，反光纸的平面边角会起翘，不够平整，而中间的位置又会鼓气，从而整体上形成看似波纹的形状，称之为水波纹。由于水波纹的鼓起部分会装有空气，没有贴紧导光板，整个LED平板灯工作的时候就会出现一明一暗的现象，导致光线不均匀的结果。该热胀冷缩的缺陷在于，由于使用的环境会有不同的温度，例如冬冷夏热，会对LED平板灯的物料具有热胀冷缩的反应，灯体光线的温度又会进一步加剧热胀冷缩的反应，从而更进一步加剧形成水波纹的缺陷。
发明内容
为解决上述技术问题，本发明的目的在于提出一种克服水波纹和热胀冷缩缺陷的反射板和装有该反射板的LED平板灯。
所采用的技术方案为：
一种反射板，其是由40-60wt%的改苯、20-40wt%的透苯和10-30wt%光反射母粒的制成的；所述光反射母粒是由80-90wt%聚碳酸酯、5-10wt%的分散剂和5-10wt%的钛白粉制成的。
其中，反射板又称反光板，透苯和改苯是本技术领域的俗称，透苯为通用级聚苯乙烯，英文缩写为GPPS；改苯为抗冲击级聚苯乙烯，英文缩写为HIPS。在本配方中，透苯和改苯的作用在于，使反射板具有较强的柔韧性和高抗冲击性，并协同光反射母粒融合成具有克服反射面水波纹现象的效果。光反射母粒的聚碳酸酯本身具有阻燃性、抗冲击性、耐热性，其抗冲击性可以与改苯和透苯协同增效；其耐热性可抵抗温度的变化，克服热胀热缩的现象。分散剂的作用在于使聚碳酸酯和钛白粉之间具有较好的界面相容，提高钛白粉在聚碳酸酯中的分散均匀度，从而提高反射率。钛白粉具有较好的折射率，掺入聚碳酸酯中，折射率的增加可以增大反射率。
优选地，所述分散剂为硅氧烷分散剂。两端极性的硅氧烷分散剂，其一端的极性基团可以瞄固在钛白粉表面，另一端的极性基团与聚碳酸酯相容，从而更好地分散聚碳酸酯和钛白粉。
优选地，所述钛白粉为金红石型钛白粉2233。此类型的钛白粉相比与其他类型的钛白粉具有较高的折射率，从而具有较高的反射率。
制备光反射母粒时，可以在高速混合机里混合配方量的聚碳酸酯、分散剂和钛白粉，然后再经熔融挤出，造粒制成。
制好的光反射母粒再混合配方量的改苯和透苯熔融压制或注塑成板，冷却制得反射板。
一种LED平板灯，包括框架、LED灯、导光板、扩散板和上述任一方案所述的反射板，所述LED灯设置在所述框架的内侧，所述扩散板、所述导光板和所述反射板依次叠加贴合安装在所述框架内，并使所述LED灯位于所述导光板的两侧；所述导光板在与所述反射板的接触面上设有多个凸点。
在此结构上，光的传导路径如下：首先LED灯的光发向导光板，导光板通过凸点从不同方向导向反射板，反射板反射同一方向的光，再经导光板导出，经扩散板扩散而出。在此过程中，由于反射板能够克服水波纹和热胀冷缩缺陷，因此可以使光扩散更为均匀，发光效率更佳。
优选地，所述扩散板是由40-60wt%的改苯、20-40wt%的透苯和10-30wt%的光扩散母粒制成的；所述光扩散母粒是由80-90wt%的聚碳酸酯、5-10wt%的光扩散剂和5-10wt%的阻燃剂制成的。
在扩散板的配方中，透苯和改苯的作用在于，使扩散板具有较强的柔韧性和高抗冲击性，并协同光扩散母粒融合成具有进一步克服水波纹现象的效果，光扩散母粒的聚碳酸酯本身具有阻燃性、抗冲击性、耐热性，其抗冲击性可以与改苯和透苯协同增效；其耐热性可抵抗温度的变化，克服热胀热缩的现象；
其阻燃性可与阻燃剂协同增效。光扩散剂的作用在于加强光的扩散性和均匀性。
优选地，所述光扩散剂为有机硅树脂球形微粉。例如可以选择日本越信生产的KMP-590或MP-470，粒径优选在1-5μm。
优选地，所述聚碳酸酯为双酚A型聚碳酸酯。
优选地，所述阻燃剂为有机硅阻燃剂。有机硅阻燃剂与有机硅树脂球形微粉均是有机硅材料，可以更容易在制备时融合在双酚A型聚碳酸酯上。
更优选地，所述有机硅阻燃剂为聚苯基甲基硅氧烷、多苯基倍半硅氧烷和苯酚端基二甲基硅氧烷中的一种或两种以上的混合物。
光扩散母粒在制备时是将光扩散剂和阻燃剂均匀地掺入到聚碳酸酯内。这可以将三种原料用密炼机打碎并在高速混合机里均匀混合，然后再经熔融挤出，造粒制成。
制好的光扩散母粒再混合配方量的改苯和透苯熔融压制或注塑成板，冷却制得扩散板。
优选地，所述导光板由光学级聚碳酸酯制成的。这样，反射板、导光板和扩散板均含有聚碳酸酯的材料，在三者结合成一体时，可以更好地彼此贴合，而不会出现缝隙，从而不会装有空气导致的发光不均匀，即更进一步消除了彼此之间的水波纹和热胀冷缩缺陷。
本发明的有益效果在于：
1. 本发明的反射板和装有该反射板的LED平板灯均解决了水波纹和热胀冷缩的缺陷，更节能环保。
2.LED 平板灯发光均匀，发光效率在20000小时内达到96%以上。
3.LED 平板灯的导光板的导光转换效率90-96%。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为LED平板灯的剖视结构示意图；
图2为LED平板灯的分解结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明优选的实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围，包括但不限于在本发明内容公开的配方的含量范围内进行适度的调整或选取得到的配方。
实施例1
一种反射板，其是由50wt%的改苯、30wt%的透苯和20wt%光反射母粒的制成的；所述光反射母粒是由80%聚碳酸酯、10wt%的分散剂和10wt%的钛白粉制成的。
分散剂为市售的两端极性的硅氧烷分散剂。
钛白粉为金红石型钛白粉2233。
聚碳酸酯为双酚A型聚碳酸酯。
制备光反射母粒时，在高速混合机里混合配方量的聚碳酸酯、分散剂和钛
白粉，然后再经熔融挤出，造粒制成。
制好的光反射母粒再混合配方量的改苯和透苯熔融压制或注塑成板，冷却制得反射板。
实施例2
一种扩散板，其是由50wt%的改苯、30wt%的透苯和20wt%的光扩散母粒制成的；所述光扩散母粒是由80wt%的聚碳酸酯、10wt%的光扩散剂和10wt%的阻燃剂制成的。
光扩散剂为KMP-590，粒径3μm。
聚碳酸酯为双酚A型聚碳酸酯。
阻燃剂为有机硅阻燃剂聚苯基甲基硅氧烷。
制备光扩散母粒时，将三种原料用密炼机打碎并在高速混合机里均匀混合，然后再经熔融挤出，造粒制成。
制好的光扩散母粒再混合配方量的改苯和透苯熔融压制或注塑成板，冷却制得扩散板。
实施例3
一种导光板，其由光学级聚碳酸酯熔融压制或注塑而成的。
实施例4
参见图1和图2所示，一种LED平板灯，包括框架1、LED灯2、实施例1制得的反射板3、实施例3制得的导光板4和实施例2制得的扩散板5，LED灯2设置在框架1的内侧，扩散板5、导光板4和反射板3依次叠加贴合安装在框架1内，并使LED灯1位于导光板4的两侧；导光板4在与反射板3的接触面41上设有多个凸点（未图示）。
经过测试，导光板的转换效率为96%，反射板的反射率为97%，扩散板的发光效率在98%，整个LED平板灯的发光效率在20000小时内均达到96%以上。
所有的数据均采用相应的国标或国际标准进行测试，例如反射率按照BS 8493-2008+A1-2010测试。例如发光效率是用国际标准的一个光源所发出的光通量φ与该光源所消耗的电功率P之比测量。
需要说明的是，上文的wt%在本领域里表示的是重量百分比。
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种反射板，其特征在于，其是由40-60wt%的改苯、20-40wt%的透苯和10-30wt%光反射母粒的制成的；所述光反射母粒是由80-90wt%聚碳酸酯、5-10wt%的分散剂和5-10wt%的钛白粉制成的。
  2. 根据权利要求1所述的反射板，其特征在于，所述分散剂为硅氧烷分散剂。
  3. 根据权利要求1所述的反射板，其特征在于，所述钛白粉为金红石型钛白粉2233。
  4. 一种LED平板灯，其特征在于，包括框架、LED灯、导光板、扩散板和权利要求1-3任一所述的反射板，所述LED灯设置在所述框架的内侧，所述扩散板、所述导光板和所述反射板依次叠加贴合安装在所述框架内，并使所述LED灯位于所述导光板的两侧；所述导光板在与所述反射板的接触面上设有多个凸点。
  5. 根据权利要求4所述的LED平板灯，其特征在于，所述扩散板是由40-60wt%的改苯、20-40wt%的透苯和10-30wt%的光扩散母粒制成的；所述光扩散母粒是由80-90wt%的聚碳酸酯、5-10wt%的光扩散剂和5-10wt%的阻燃剂制成的。
  6. 根据权利要求5所述的LED平板灯，其特征在于，所述光扩散剂为有机硅树脂球形微粉。
  7. 根据权利要求5所述的LED平板灯，其特征在于，所述扩散板的聚碳酸酯为双酚A型聚碳酸酯。
  8. 根据权利要求5所述的LED平板灯，其特征在于，所述阻燃剂为有机硅阻燃剂。
  9. 根据权利要求8所述的LED平板灯，其特征在于，所述有机硅阻燃剂为聚苯基甲基硅氧烷、多苯基倍半硅氧烷和苯酚端基二甲基硅氧烷中的一种或两种以上的混合物。
  10. 根据权利要求5所述的LED平板灯，其特征在于，所述导光板由光学级聚碳酸酯制成的。
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Publication number Priority date Publication date Assignee Title
CN110655774A (zh) * 2019-07-23 2020-01-07 佛山市鑫桥科技有限公司 一种高反射pc反射母粒及其制备方法
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010145908A (ja) * 2008-12-22 2010-07-01 Furukawa Electric Co Ltd:The 光反射シートおよびその製造方法
CN101792585A (zh) * 2010-03-16 2010-08-04 广州市番禺区天宇塑料实业有限公司 一种阻燃聚碳酸酯组合物及其制备方法
CN201964240U (zh) * 2010-11-18 2011-09-07 象山中翔电子科技有限公司 Led平板灯
CN102558697A (zh) * 2012-01-11 2012-07-11 长春工业大学 超高韧性聚苯乙烯树脂的制备方法
CN102898582A (zh) * 2011-07-26 2013-01-30 比亚迪股份有限公司 微米级聚合物微球及其制备方法和光扩散板
CN104072861A (zh) * 2013-03-29 2014-10-01 积水化成品工业株式会社 光反射板
CN105968771A (zh) * 2016-06-28 2016-09-28 中广核俊尔新材料有限公司 高阻燃高强度高反射聚碳酸酯材料及其制备方法和应用

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105037986A (zh) * 2015-06-16 2015-11-11 广东瑞捷光电股份有限公司 母粒、树脂组合物、扩散板及扩散板的制备方法
CN105670149A (zh) * 2016-02-23 2016-06-15 东莞轩朗实业有限公司 光扩散母粒以及包括该光扩散母粒的光扩散板

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010145908A (ja) * 2008-12-22 2010-07-01 Furukawa Electric Co Ltd:The 光反射シートおよびその製造方法
CN101792585A (zh) * 2010-03-16 2010-08-04 广州市番禺区天宇塑料实业有限公司 一种阻燃聚碳酸酯组合物及其制备方法
CN201964240U (zh) * 2010-11-18 2011-09-07 象山中翔电子科技有限公司 Led平板灯
CN102898582A (zh) * 2011-07-26 2013-01-30 比亚迪股份有限公司 微米级聚合物微球及其制备方法和光扩散板
CN102558697A (zh) * 2012-01-11 2012-07-11 长春工业大学 超高韧性聚苯乙烯树脂的制备方法
CN104072861A (zh) * 2013-03-29 2014-10-01 积水化成品工业株式会社 光反射板
CN105968771A (zh) * 2016-06-28 2016-09-28 中广核俊尔新材料有限公司 高阻燃高强度高反射聚碳酸酯材料及其制备方法和应用

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