WO2019100311A1 - 发光二极管灯具用光扩散聚碳酸酯灯管及其制造方法 - Google Patents

发光二极管灯具用光扩散聚碳酸酯灯管及其制造方法 Download PDF

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WO2019100311A1
WO2019100311A1 PCT/CN2017/112763 CN2017112763W WO2019100311A1 WO 2019100311 A1 WO2019100311 A1 WO 2019100311A1 CN 2017112763 W CN2017112763 W CN 2017112763W WO 2019100311 A1 WO2019100311 A1 WO 2019100311A1
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light
parts
diffusing
lamp
polycarbonate
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PCT/CN2017/112763
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English (en)
French (fr)
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张唯舟
汪济奎
陈银
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苏州康邦新材料有限公司
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Priority to PCT/CN2017/112763 priority Critical patent/WO2019100311A1/zh
Publication of WO2019100311A1 publication Critical patent/WO2019100311A1/zh

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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
    • C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
    • C08K13/02—Organic and inorganic ingredients
    • 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
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
    • C08K5/098—Metal salts of carboxylic acids
    • 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
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/13—Phenols; Phenolates
    • 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
    • C08K5/00—Use of organic ingredients
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/17—Amines; Quaternary ammonium 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
    • C08K5/00—Use of organic ingredients
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/17—Amines; Quaternary ammonium compounds
    • C08K5/18—Amines; Quaternary ammonium compounds with aromatically bound amino groups
    • 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
    • C08K5/00—Use of organic ingredients
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/32—Compounds containing nitrogen bound to oxygen
    • 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
    • C08K5/00—Use of organic ingredients
    • C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
    • C08K5/41—Compounds containing sulfur bound to oxygen
    • C08K5/42—Sulfonic acids; Derivatives thereof
    • 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
    • C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • C08L33/04—Homopolymers or copolymers of esters
    • C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
    • C08L33/10—Homopolymers or copolymers of methacrylic acid esters
    • C08L33/12—Homopolymers or copolymers of methyl methacrylate
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
    • C08L83/04—Polysiloxanes

Definitions

  • the present invention relates to a light diffusing polycarbonate (PC) lamp for a light emitting diode (LED) lamp and a method of manufacturing the same.
  • PC lampshade is a lampshade made of PC (polycarbonate), LED lamp, LED fluorescent lamp, lamp and lamp housing series.
  • PC tube is one of the important categories.
  • a PC lamp passes through a diffusion layer of a PC substrate and encounters a medium (diffusion particle) different in refractive index, multi-angle and multi-directional refraction, reflection and scattering occur, thereby achieving light diffusion effect.
  • a medium diffusion particle
  • multi-angle and multi-directional refraction, reflection and scattering occur, thereby achieving light diffusion effect.
  • a PC lamp cover comprising a body, the body is provided with a guiding groove, the body is equipped with a screw, the right end of the screw is provided with a special-shaped plate, and the special-shaped plate is provided with a fluorescent plate.
  • a threaded column is mounted on a middle portion of the body, a lamp holder is disposed at a right end of the threaded column, a limiting plate is disposed at a left end of the threaded column, a protrusion is disposed at a right end of the limiting plate, and a compression is installed on the threaded column and the screw Nut.
  • the utility model helps to adjust the position of the fluorescent plate by providing a screw with a special-shaped plate, and helps the fixing and mounting of the body by providing a limiting plate with a bump, which is helpful by providing a threaded column with a lamp holder.
  • the utility model also contributes to the fixing of the body, has a simple structure, is convenient to operate, and is economical and practical.
  • this patent mainly focuses on the structure of the PC lampshade, and there is no mention of improvements in its own performance.
  • CN104788869A discloses a lampshade material, which is composed of the following raw materials in terms of mass parts: PMMA 100 parts, 4 to 6 parts of silicone material, 1 to 2 parts of methacryloxysilane, 0.5 to 1 part of polyethylene glycol, 0.4 to 0.8 parts of silicone light diffusing agent, 1 to 1.5 parts of carboxymethyl cellulose, nanometer 1 to 2 parts of negative ion powder, 0.5 to 1.5 parts of nano-cerium oxide, 2 to 5 parts of ultra-fine tetrafluoroethylene powder, 0.5 to 1.5 parts of antioxidant, 0.5 to 1.5 parts of light stabilizer; And a method of preparing the lampshade material.
  • the lampshade material has good light transmittance and soft light, and the thermal expansion coefficient of the lampshade material is matched with the LED chip, so that the LED lamp does not bend the wafer due to temperature change during normal operation, so that the LED lamp is in use
  • the overall structure is stable and prolongs the service life.
  • the lampshade material has an air purifying effect, and the preparation method of the lampshade material is simple, the dispersion performance of the prepared lampshade material is obviously improved, the light transmittance and the haze are obviously improved, and the mechanical properties are improved. And surface hardness has been significantly improved.
  • the lampshade made of the lampshade material provided by the patent has low temperature resistance, resulting in a wide range of applications.
  • an object of the present invention is to provide a light diffusing PC lamp for a LED lamp and a method of manufacturing the same, the light diffusing agent being added to a PC resin by adding a light diffusing agent It is uniformly dispersed in the PC resin to form a sea-island structure. Due to the different refractive index of the PC resin and the light diffusing agent, the light is similar to the specular reflection on the surface of the light diffusing agent, and after multiple reflections, the light diffusing effect is achieved.
  • a light-diffusing PC lamp for an LED lamp comprising the following components by weight: polycarbonate: 40 to 50 parts, light diffusing agent: 10 to 20 parts, antioxidant: 1 to 5 parts , emulsifier: 1 to 5 parts, antistatic agent: 1 to 5 parts, heat stabilizer: 1 to 5 parts, crosslinking agent: 1 to 5 parts, the light diffusing agent is spherical in shape, and the diameter is 0.1 to 0.5. Mm, distributed in an island structure.
  • the light-diffusing PC lamp comprises the following components by weight: polycarbonate: 45 to 50 parts, light diffusing agent: 10 to 15 parts, antioxidant: 1 to 3 parts, emulsifier: 3 to 5 parts, Antistatic agent: 2 to 5 parts, heat stabilizer: 1 to 4 parts, cross-linking agent: 2 to 5 parts.
  • the light diffusing PC lamp comprises the following components by weight: polycarbonate: 45 parts, light diffusing agent: 15 parts, antioxidant: 2 parts, emulsifier: 4 parts, antistatic agent: 3 parts, Heat stabilizer: 2 parts, crosslinker: 2 parts.
  • the light diffusing agent is an acrylic light diffusing agent, a styrene light diffusing agent or a silicone light diffusing agent.
  • the antioxidant is selected from alkylphenylnaphthylamine, alkyldiphenylamine or alkylated phenol.
  • the emulsifier is sodium dodecyl sulfate, sodium dodecylbenzenesulfonate or sodium lauryl sulfate.
  • the antistatic agent is ethoxylated amine or diethanolamine.
  • the heat stabilizer is calcium stearate, aluminum oxide, titanium dioxide, magnesium oxide or zinc oxide.
  • the crosslinking agent is formaldehyde, N,N'-methylenebisacrylamide or N-methylolacrylamide.
  • the invention also provides a method for manufacturing a light diffusing PC lamp for an LED lamp, and the specific preparation steps are as follows: pouring the polycarbonate and the light diffusing agent into the dispersion kettle, and cutting at a speed of 800 to 1000 rpm. Disperse and disperse for 10 to 15 minutes, add antioxidant, emulsifier, antistatic agent, heat stabilizer and cross-linking agent, and send it to the twin-screw extruder for melting. Blending and blending for 10 to 40 minutes, the first extrusion temperature is 100 to 150 ° C, the second extrusion temperature is 160 to 200 ° C, the screw rotation speed is 150 to 300 rpm, and the extrusion pressure is 50 to 100 bar. The material is injection-molded to obtain a light-diffusing PC lamp for LED lamps in the shape of a hollow tube.
  • the light-diffusing PC lamp has a diffusivity of 99%, uniform dispersion and no crystal point, a light transmittance of 86-93%, a diffusivity of 97-99%, and a brightness of more than twice that of a conventional lampshade.
  • the advertising light box industry is widely used. Under the premise of ensuring high light transmittance, the light diffusivity and haze of the product are increased, the self-cleaning, heat insulation and antistatic performance of the lamp tube are improved, and the entire surface is formed by the action of the diffusion lamp tube.
  • the uniform light-emitting surface does not form a dark area, and a residual image is formed on the screen to make the picture more realistic and achieve a transparent and transparent visual effect.
  • the ordinary grade milky white PC tube has a light transmittance of only 20%.
  • the ordinary grade milky white PC tube can only be penetrated by light, but it does not function as a uniform astigmatism, and the light diffusion PC tube can fully scatter the LED light source.
  • It has excellent impact resistance and is 20 to 30 times of acrylic sheet. It is not easy to be damaged during installation and transportation.
  • the specific gravity of the lamp is 1.2, and the weight is only 1/2 of that of ordinary glass, so it is easy to construct and reduce transportation costs.
  • the self-cleaning, sterilization, heat dissipation and wear resistance of the lamp tube are improved, and the flame retardant level can reach V-0 level, and the safety performance is higher.
  • the temperature resistance is -40 ⁇ 120 ° C, will not be deformed due to long-term illumination of the light source, low production cost, no pollution to the environment, and improve economic efficiency.
  • the second extrusion temperature is 160-200 ° C
  • the screw rotation speed is 150-300 rpm
  • the extrusion pressure is 50-100 bar
  • the extruded material is injection-molded to obtain a light-diffusing PC lamp for the LED lamp having the shape of a hollow tube body. tube.
  • the sample After testing, the sample has a diffusivity of 72%, a light transmittance of 95%, an impact strength of 544.17 J/m, a specific gravity of 1.2, a flame retardant property (UL-94) of V-0, and a temperature resistance range of -32 ⁇ . 106 ° C.
  • the sample After testing, the sample has a diffusivity of 97%, a light transmittance of 93%, an impact strength of 752.235 J/m, a specific gravity of 1.2, a flame retardant property (UL-94) of V-0, and a temperature resistance range of -40 ⁇ . 120 ° C.
  • a light-diffusing PC lamp for the LED lamp having a hollow tubular body is obtained.
  • the diffusion rate is 99%
  • the light transmittance of the sample is 90%
  • the impact strength is 597.52 J/m
  • the specific gravity is 1.1
  • the flame retardant performance (UL-94) is V-0
  • the temperature resistance range is -35 ⁇ . 120 ° C.
  • the sample After testing, the sample has a diffusivity of 99%, a light transmittance of 86%, an impact strength of 512.16 J/m, a specific gravity of 1.2, a flame retardant property (UL-94) of V-0, and a temperature resistance range of -30 ⁇ . 110 ° C.
  • the sample After testing, the sample has a diffusivity of 99%, a light transmittance of 88%, an impact strength of 656.205 J/m, a specific gravity of 1.2, a flame retardant property (UL-94) of V-0, and a temperature resistance range of -37 ⁇ . 118 ° C.
  • the sample After testing, the sample has a diffusivity of 98%, a light transmittance of 92%, an impact strength of 720.225 J/m, a specific gravity of 1.1, a flame retardant performance (UL-94) of V-0, and a temperature resistance range of -35 ⁇ . 115 ° C.
  • the invention provides a light diffusing PC lamp tube for LED lamps and a manufacturing method thereof, and the light diffusion PC lamp tube has a diffusion rate of 97%-99%, uniform dispersion without crystal points, and transmittance. 86-93%, the brightness is more than twice that of the traditional lampshade, and it is widely used in the advertising light box industry.
  • the light diffusivity and haze of the product are increased, the self-cleaning, heat insulation and antistatic performance of the lamp tube are improved, and the entire surface is formed by the action of the diffusion lamp tube.
  • the uniform light-emitting surface does not form a dark area, and a residual image is formed on the screen to make the picture more realistic and achieve a transparent and transparent visual effect.
  • the ordinary grade milky white PC tube has a light transmittance of only 20%.
  • the ordinary grade milky white PC tube can only be penetrated by light, but it does not function as a uniform astigmatism, and the light diffusion PC tube can fully scatter the LED light source.
  • It has excellent impact resistance and is 20 to 30 times of acrylic sheet. It is not easy to be damaged during installation and transportation.
  • the specific gravity of the lamp is 1.2, and the weight is only 1/2 of that of ordinary glass, so it is easy to construct and reduce transportation costs.
  • the self-cleaning, sterilization, heat dissipation and wear resistance of the lamp tube are improved, and the flame retardant level can reach V-0 level, and the safety performance is higher.
  • the temperature resistance is -40 ⁇ 120 ° C, will not be deformed due to long-term illumination of the light source, low production cost, no pollution to the environment, and improve economic efficiency.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

一种LED灯具用光扩散PC灯管及其制造方法，所述光扩散PC灯管包括如下重量份的成分：聚碳酸酯：40～50份，光扩散剂：10～20份，抗氧化剂：1～5份，乳化剂：1～5份，抗静电剂：1～5份，热稳定剂：1～5份，交联剂：1～5份，所述光扩散剂形状为球形，直径为0.1～0.5μm，呈海岛结构分散排布。所述光扩散PC灯管通过在PC树脂中添加光扩散剂，光扩散剂呈球形，均匀分散在PC树脂中，形成海岛结构，由于PC树脂和光扩散剂的折光指数不同，光线在光扩散剂表面类似镜面反射，经过多次反射，达到光扩散效果。

Description

[根据细则37.2由ISA制定的发明名称]　发光二极管灯具用光扩散聚碳酸酯灯管及其制造方法 技术领域
本发明涉及一种发光二极管(LED)灯具用光扩散聚碳酸酯(PC)灯管及其制造方法。
背景技术
在LED照明逐渐被市场接受的过程中，关于灯罩的问题一直都困扰着灯具生产厂商。既要有高的透光率做前提，同时又要做到具有相当的光扩散率和良好的光源隐蔽性。最初所采用玻璃用来生产灯罩，玻璃的问题是易碎，而且光的扩散效果也不是很好，很难达到照明要求随即使用。后来逐渐的发展到用树脂来代替玻璃，如果单单只用透明树脂来做灯罩，虽然透光率很高，基本都能达到90％以上，但光的散射效果不够理想，光源隐蔽性能差。白板树脂，其存在着透光率过低，严重影响了LED灯的照明。
PC灯罩是用PC(聚碳酸酯)为原料做成的灯泡、LED灯具、LED日光灯、车灯及灯具外壳系列的灯罩。
其中，PC灯管即为其中一重要类别。PC灯管是光线通过以PC基材的扩散层，遇到与其折射率相异的介质(扩散粒子)时，会发生多角度、多方向的折射、反射与散射的现象，从而达到光扩散效果，为显示照明组件提供一均匀面光源。
对于PC灯罩，目前国内主要存在如下专利文献：
授权公告号：CN204943336U，公开了一种PC灯罩，包括本体，所述本体上设有导槽，本体安装有螺杆，所述螺杆的右端设有异形板，所述异形板上安装有荧光板，本体的中部安装有螺纹柱，所述螺纹柱的右端设有灯座，螺纹柱的左端设有限位板，所述限位板的右端设有凸块，螺纹柱和螺杆上均安装有压紧螺母。本实用新型通过设置带有异形板的螺杆有助于调节荧光板的位置，通过设置带有凸块的限位板有助于本体的固定和安装，通过设置带有灯座的螺纹柱有助于调节灯座的位置，还有助于本体的固定，且结构简单，操作方便，经济实用。然而该专利主要着重于PC灯罩的结构，对于其本身性能的改进没有提及。
而对于LED灯具用灯罩(PC灯管)的制造方法，目前国内主要存在如下专利文献：专利公开号：CN104788869A，公开了一种灯罩材料，按质量份数计，由以下原料组成：PMMA100份，有机硅材料4～6份，甲基丙烯酰氧基硅烷1～2份，聚乙二醇0.5～1份，有机硅光扩散剂0.4～0.8份，羧甲基纤维素1～1.5份，纳米负离子粉1～2份，纳米氧化钇0.5～1.5份，聚四氟乙烯超细粉2～5份，抗氧剂0.5～1.5份，光稳定剂0.5～1.5份；还涉 及该灯罩材料的制备方法。该灯罩材料，光透性好，光线柔和，并且该灯罩材料的热膨胀系数与LED芯片相匹配，使得LED灯在正常工作中不会因为温度的变化而使晶片弯曲，从而使得LED灯在使用过程中整体结构稳固，延长使用寿命，另外该灯罩材料具有空气净化作用，并且该灯罩材料的制备方法简单，能保证制备的灯罩材料的分散性能明显改善，透光率和雾度明显提升，力学性能和表面硬度有明显改善。然而该专利提供的灯罩材料所制成的灯罩耐温性能不高，导致适用范围不广泛。
发明内容
为解决上述存在的问题，本发明的目的在于提供一种LED灯具用光扩散PC灯管及其制造方法，所述光扩散PC灯管通过在PC树脂中添加光扩散剂，光扩散剂呈球形，均匀分散在PC树脂中，形成海岛结构，由于PC树脂和光扩散剂的折光指数不同，光线在光扩散剂表面类似镜面反射，经过多次反射，达到光扩散效果。
为达到上述目的，本发明的技术方案是：
一种LED灯具用光扩散PC灯管，所述光扩散PC灯管包括如下重量份的成分：聚碳酸酯：40～50份，光扩散剂：10～20份，抗氧化剂：1～5份，乳化剂：1～5份，抗静电剂：1～5份，热稳定剂：1～5份，交联剂：1～5份，所述光扩散剂形状为球形，直径为0.1～0.5μm，呈海岛结构分散排布。
进一步，所述光扩散PC灯管包括如下重量份的成分：聚碳酸酯：45～50份，光扩散剂：10～15份，抗氧化剂：1～3份，乳化剂：3～5份，抗静电剂：2～5份，热稳定剂：1～4份，交联剂：2～5份。
优选地，所述光扩散PC灯管包括如下重量份的成分：聚碳酸酯：45份，光扩散剂：15份，抗氧化剂：2份，乳化剂：4份，抗静电剂：3份，热稳定剂：2份，交联剂：2份。
所述光扩散剂为亚克力型光扩散剂、苯乙烯型光扩散剂或有机硅光扩散剂。
所述抗氧剂选为烷基苯基萘胺、烷基二苯胺或烷基化苯酚。
所述乳化剂为十二烷基磺酸钠、十二烷基苯磺酸钠或十二烷基硫酸钠。
所述抗静电剂为乙氧化胺或二乙醇胺。
所述热稳定剂为硬脂酸钙、三氧化二铝、二氧化钛、氧化镁或氧化锌。
所述交联剂为甲醛、N,N’-亚甲基双丙烯酰胺或N-羟甲基丙烯酰胺。
同时，本发明还提供一种LED灯具用光扩散PC灯管的制造方法，具体制备步骤如下：将聚碳酸酯及光扩散剂倒入分散釜内，以800～1000转/min的速度进行剪切分散10～15min，加入抗氧化剂、乳化剂、抗静电剂、热稳定剂及交联剂，送入双螺杆挤出机中熔 融共混10～40min，第一次挤出温度为100～150℃，第二次挤出温度为160～200℃，螺杆转速为150～300rpm，挤出压力为50～100bar，挤出后的物料注塑成型，得到形状为中空管体的LED灯具用光扩散PC灯管。
本发明的有益效果在于：
所述光扩散PC灯管，其扩散率可达到99％，分散均匀无晶点，透光率可达86-93％，扩散率高达97-99％，亮度是传统灯罩的2倍以上，在广告灯箱行业广泛使用。在保证高透光率的前提下，又增加了产品的光扩散率和雾度，提升了灯管的自清洁、隔热及抗静电性能，通过扩散灯管的作用，使整个表面形成了一个均匀的发光面而不形成暗区，在画面上形成残留影像，使画面更逼真，达到通体晶莹剔透的视觉效果。而普通级乳白PC灯管透光率只有20％，普通级乳白PC灯管仅可以被光线穿透，但起不到均匀散光的作用，而光扩散PC灯管能充分散射LED光源。具有优良的抗冲击性能，是亚克力板材的20～30倍，安装、运输过程中不易损坏。灯管比重是1.2，重量仅为普通玻璃的1/2，所以既能便于施工，同时也降低了运输费用。提升了灯管的自清洁、杀菌、散热及耐磨性能，阻燃级别可达到V-0级，安全性能更高。耐温性为-40～120℃，不会由于灯源的长期照射而变形生产成本低，对环境无污染，提升经济效益。
具体实施方式
对比例
准确称量50份聚碳酸酯倒入分散釜内，以800～1000转/min的速度进行剪切分散10～15min，加入2份烷基苯基萘胺、4份十二烷基磺酸钠、3份乙氧化胺、2份二乙醇胺、2份硬脂酸钙、2份甲醛，送入双螺杆挤出机中熔融共混10～40min，第一次挤出温度为100～150℃，第二次挤出温度为160～200℃，螺杆转速为150～300rpm，挤出压力为50～100bar，挤出后的物料注塑成型，得到形状为中空管体的LED灯具用光扩散PC灯管。经过测试，该样品扩散率72％，透光率为95％，抗冲击强度为544.17J/m，比重为1.2，阻燃性能(UL-94)为V-0，耐温范围为-32～106℃。
实施例1
准确称量45份聚碳酸酯和15份亚克力型光扩散剂倒入分散釜内，以800～1000转/min的速度进行剪切分散10～15min，加入2份烷基苯基萘胺、4份十二烷基磺酸钠、3份乙氧化胺、2份二乙醇胺、2份硬脂酸钙、2份甲醛，送入双螺杆挤出机中熔融共混10～40min，第一次挤出温度为100～150℃，第二次挤出温度为160～200℃，螺杆转速为150～300rpm，挤出压力为50～100bar，挤出后的物料注塑成型，得到形状为中空管体的LED灯具用光扩散PC灯 管。经过测试，该样品扩散率97％，透光率为93％，抗冲击强度为752.235J/m，比重为1.2，阻燃性能(UL-94)为V-0，耐温范围为-40～120℃。
实施例2
准确称量40份聚碳酸酯和18份苯乙烯型光扩散剂倒入分散釜内，以800～1000转/min的速度进行剪切分散10～15min，加入2份烷基苯基萘胺、3份烷基二苯胺、3份十二烷基苯磺酸钠、3份乙氧化胺、3份三氧化二铝、3份N,N’-亚甲基双丙烯酰胺，送入双螺杆挤出机中熔融共混10～40min，第一次挤出温度为100～150℃，第二次挤出温度为160～200℃，螺杆转速为150～300rpm，挤出压力为50～100bar，挤出后的物料注塑成型，得到形状为中空管体的LED灯具用光扩散PC灯管。经过测试，扩散率99％，该样品透光率为90％，抗冲击强度为597.52J/m，比重为1.1，阻燃性能(UL-94)为V-0，耐温范围为-35～120℃。
实施例3
准确称量43份聚碳酸酯和13份有机硅光扩散剂倒入分散釜内，以800～1000转/min的速度进行剪切分散10～15min，加入1份烷基化苯酚、3份十二烷基苯磺酸钠、2份十二烷基硫酸钠、2份乙氧化胺、2份二乙醇胺、1份二氧化钛、2份N,N’-亚甲基双丙烯酰胺、2份N-羟甲基丙烯酰胺，送入双螺杆挤出机中熔融共混10～40min，第一次挤出温度为100～150℃，第二次挤出温度为160～200℃，螺杆转速为150～300rpm，挤出压力为50～100bar，挤出后的物料注塑成型，得到形状为中空管体的LED灯具用光扩散PC灯管。经过测试，该样品扩散率99％，透光率为86％，抗冲击强度为512.16J/m，比重为1.2，阻燃性能(UL-94)为V-0，耐温范围为-30～110℃。
实施例4
准确称量48份聚碳酸酯和10份亚克力型光扩散剂、5份苯乙烯型光扩散剂、5份有机硅光扩散剂倒入分散釜内，以800～1000转/min的速度进行剪切分散10～15min，加入1份烷基苯基萘胺、2份烷基二苯胺、2份十二烷基硫酸钠、2份二乙醇胺、3份氧化镁、2份氧化锌、1份N-羟甲基丙烯酰胺，送入双螺杆挤出机中熔融共混10～40min，第一次挤出温度为100～150℃，第二次挤出温度为160～200℃，螺杆转速为150～300rpm，挤出压力为50～100bar，挤出后的物料注塑成型，得到形状为中空管体的LED灯具用光扩散PC灯管。经过测试，该样品扩散率99％，透光率为88％，抗冲击强度为656.205J/m，比重为1.2，阻燃性能(UL-94)为V-0，耐温范围为-37～118℃。
实施例5
准确称量50份聚碳酸酯和5份亚克力型光扩散剂、5份苯乙烯型光扩散剂倒入分散釜内， 以800～1000转/min的速度进行剪切分散10～15min，加入2份烷基苯基萘胺、2份烷基二苯胺、1份十二烷基苯磺酸钠、1份乙氧化胺、2份硬脂酸钙、1份三氧化二铝、1份氧化镁、1份甲醛、2份N,N’-亚甲基双丙烯酰胺、2份N-羟甲基丙烯酰胺，送入双螺杆挤出机中熔融共混10～40min，第一次挤出温度为100～150℃，第二次挤出温度为160～200℃，螺杆转速为150～300rpm，挤出压力为50～100bar，挤出后的物料注塑成型，得到形状为中空管体的LED灯具用光扩散PC灯管。经过测试，该样品扩散率98％，透光率为92％，抗冲击强度为720.225J/m，比重为1.1，阻燃性能(UL-94)为V-0，耐温范围为-35～115℃。
本发明所提供的一种LED灯具用光扩散PC灯管及其制造方法，所述光扩散PC灯管，其扩散率可达到97％-99％，分散均匀无晶点，透光率可达86-93％，亮度是传统灯罩的2倍以上，在广告灯箱行业广泛使用。在保证高透光率的前提下，又增加了产品的光扩散率和雾度，提升了灯管的自清洁、隔热及抗静电性能，通过扩散灯管的作用，使整个表面形成了一个均匀的发光面而不形成暗区，在画面上形成残留影像，使画面更逼真，达到通体晶莹剔透的视觉效果。而普通级乳白PC灯管透光率只有20％，普通级乳白PC灯管仅可以被光线穿透，但起不到均匀散光的作用，而光扩散PC灯管能充分散射LED光源。具有优良的抗冲击性能，是亚克力板材的20～30倍，安装、运输过程中不易损坏。灯管比重是1.2，重量仅为普通玻璃的1/2，所以既能便于施工，同时也降低了运输费用。提升了灯管的自清洁、杀菌、散热及耐磨性能，阻燃级别可达到V-0级，安全性能更高。耐温性为-40～120℃，不会由于灯源的长期照射而变形生产成本低，对环境无污染，提升经济效益。
需要说明的是，以上实施例仅用以说明本发明的技术方案而非限制。尽管参照较佳实施例对本发明进行了详细说明，本领域的普通技术人员应当理解，可以对发明的技术方案进行修改或者等同替换，而不脱离本发明技术方案的范围，其均应涵盖在本发明的权利要求范围中。

Claims (10)

  1. 一种发光二极管灯具用光扩散聚碳酸酯灯管，其特征在于，所述光扩散PC灯管包括如下重量份的成分：聚碳酸酯：40～50份，光扩散剂：10～20份，抗氧化剂：1～5份，乳化剂：1～5份，抗静电剂：1～5份，热稳定剂：1～5份，交联剂：1～5份，所述光扩散剂形状为球形，直径为0.1～0.5μm，呈海岛结构分散排布。
  2. 根据权利要求1所述的一种发光二极管灯具用光扩散聚碳酸酯灯管，其特征在于，所述光扩散PC灯管包括如下重量份的成分：聚碳酸酯：45～50份，光扩散剂：10～15份，抗氧化剂：1～3份，乳化剂：3～5份，抗静电剂：2～5份，热稳定剂：1～4份，交联剂：2～5份。
  3. 根据权利要求1所述的一种发光二极管灯具用光扩散聚碳酸酯灯管，其特征在于，所述光扩散PC灯管包括如下重量份的成分：聚碳酸酯：45份，光扩散剂：15份，抗氧化剂：2份，乳化剂：4份，抗静电剂：3份，热稳定剂：2份，交联剂：2份。
  4. 根据权利要求1所述的一种发光二极管灯具用光扩散聚碳酸酯灯管，其特征在于，所述光扩散剂为亚克力型光扩散剂、苯乙烯型光扩散剂或有机硅光扩散剂。
  5. 根据权利要求1所述的一种发光二极管灯具用光扩散聚碳酸酯灯管，其特征在于，所述抗氧剂选为烷基苯基萘胺、烷基二苯胺或烷基化苯酚。
  6. 根据权利要求1所述的一种发光二极管灯具用光扩散聚碳酸酯灯管，其特征在于，所述乳化剂为十二烷基磺酸钠、十二烷基苯磺酸钠或十二烷基硫酸钠。
  7. 根据权利要求1所述的一种发光二极管灯具用光扩散聚碳酸酯灯管，其特征在于，所述抗静电剂为乙氧化胺或二乙醇胺。
  8. 根据权利要求1所述的一种发光二极管灯具用光扩散聚碳酸酯灯管，其特征在于，所述热稳定剂为硬脂酸钙、三氧化二铝、二氧化钛、氧化镁或氧化锌。
  9. 根据权利要求1所述的一种发光二极管灯具用光扩散聚碳酸酯灯管，其特征在于，所述交联剂为甲醛、N,N’-亚甲基双丙烯酰胺或N-羟甲基丙烯酰胺。
  10. 根据权利要求1所述的一种发光二极管灯具用光扩散聚碳酸酯灯管，其特征在于：具体制备具体步骤如下：将聚碳酸酯及光扩散剂倒入分散釜内，以800～1000转/min的速度进行剪切分散10～15min，加入抗氧化剂、乳化剂、抗静电剂、热稳定剂及交联剂，送入双螺杆挤出机中熔融共混10～40min，第一次挤出温度为100～150℃，第二次挤出温度为160～200℃，螺杆转速为150～300rpm，挤出压力为50～100bar，挤出后的物料注塑成型，得到形状为中空管体的发光二极管灯具用光扩散聚碳酸酯灯管。
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CN1659230A (zh) * 2002-12-27 2005-08-24 可隆株式会社 光漫射树脂组合物
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