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Polycarbonate lens for LED illumination and preparation method thereof

A technology of LED lighting and polycarbonate, applied in lighting and heating equipment, lighting devices, lighting device parts and other directions, can solve the problems of increasing molding difficulty, high product defect rate, light source light efficiency attenuation, etc. Anti-ultraviolet performance, increase the scattering and transmission of light, the effect of improving production efficiency

Active Publication Date: 2020-05-29
SHENZHEN FDL LIGHTING TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the multi-layer stepped honeycomb soft light lens of this patent can solve the problem that the light effect of the light source is greatly attenuated after the light source passes through the existing frosted and light-shielding lens, but this multi-layer stepped honeycomb soft light lens is in injection molding. When the injection material needs to be filled into the mold, when the fluidity of the injection material is low, it is difficult to completely fill the corner connection of the multi-layer steps, resulting in a high defective rate of the product and increasing the difficulty of molding

Method used

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  • Polycarbonate lens for LED illumination and preparation method thereof
  • Polycarbonate lens for LED illumination and preparation method thereof

Examples

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preparation example Construction

[0037] Preparation example of light diffusion masterbatch The silicone microspheres in the following preparation examples are selected from the type HY-690 silicone microspheres provided by Shenzhen Haiyang Powder Technology Co., Ltd.; the polycarbonate is selected from the grades provided by Idemitsu It is a polycarbonate resin of LC1500.

[0038] The light diffusion masterbatch adopts the following method: ① Take silicone microspheres, polydimethylsiloxane, and γ-aminopropyltriethoxysilane and mix them in a ratio of 90:10:1 to obtain a silicone mixture ②Take polycarbonate and silicone mixture, make it mix according to the ratio of 9:1, and melt blend at 270℃ for 5min to obtain silicone-polycarbonate mixture; ③Put silicone- After the polycarbonate mixture is sheared and crushed through a 200-mesh sieve, a light-diffusing masterbatch is obtained.

[0039] Preparation example of modified mica powder The mica powder in the following preparation examples is selected from the mic...

preparation example 1

[0040] Preparation example 1 of modified mica powder: a. Take mica powder and calcinate it at a temperature of 500° C. for 5 hours to obtain calcined mica powder;

[0041] b. Take lanthanum oxide, calcium acetate and water, mix according to the ratio of 1:2:50 by weight, and stir for 30min at a speed of 500r / min to obtain a suspension;

[0042] c. Add 1% of its weight of γ-(methacryloxy)propyltrimethoxysilane to the calcined mica powder, stir for 3 minutes, then add 40% of the weight of the calcined mica powder suspension for 30 minutes After all the drops are completed, the temperature is raised to 80°C, and stirred at a speed of 600r / min for 60min; then dried at a temperature of 150°C for 6h, cooled, crushed, and sieved to obtain modified mica powder.

preparation example 2

[0043] Preparation example 2 of modified mica powder: a. Take mica powder and calcinate it at a temperature of 500° C. for 5 hours to obtain calcined mica powder;

[0044] b. Take lanthanum oxide, calcium acetate and water, mix according to the ratio of 1:2:50 by weight, and stir for 30min at a speed of 500r / min to obtain a suspension;

[0045] c. Add 1.25% of the weight of γ-(methacryloyloxy)propyltrimethoxysilane to the calcined mica powder, stir for 3 minutes, then add 50% of the weight of the calcined mica powder suspension for 30 minutes After all the drops are completed, the temperature is raised to 85°C, and stirred at a speed of 800r / min for 75min; then dried at a temperature of 155°C for 7h, cooled, crushed, and sieved to obtain modified mica powder.

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Abstract

The invention discloses a polycarbonate lens for LED illumination and a preparation method thereof, and relates to the technical field of plastic lens materials. The polycarbonate lens comprises the following components by weight: 100 parts of polycarbonate, 5-7 parts of a light diffusion master batch, 0.3-0.5 parts of an antioxidant, 0.2-0.4 parts of a light stabilizer and 0.6-0.8 parts of a lubricant. The light diffusion master batch is prepared by the following method: (1) taking organic silicon microspheres, polydimethylsiloxane and gamma-aminopropyltriethoxysilane, and mixing according toa ratio of 90:10:1 to obtain an organic silicon mixture; (2) mixing polycarbonate and the organic silicon mixture according to a ratio of 9:1, and carrying out melt blending to obtain an organic silicon-polycarbonate mixture; and (3) shearing, crushing and sieving the organic silicon-polycarbonate mixture to obtain the photodiffusion master batch. The lens provided by the invention is simple in forming process, and the product has the advantages of light transmission and opaque soft light effect.

Description

technical field [0001] The invention relates to the technical field of plastic lens materials, in particular to a polycarbonate lens for LED lighting and a preparation method thereof. Background technique [0002] A lens is an optical element made of a spherical part made of transparent substances (such as glass, crystal, plastic, etc.) according to the law of refraction of light; common materials for lenses include optical glass, plexiglass, silica gel and polycarbonate; the light transmission of optical glass High efficiency (above 97%), good imaging effect, high temperature resistance, but it is fragile and high cost; organic glass chemical name is polymethyl methacrylate, its light transmittance is high (above 93%), but its Low temperature resistance (70°C), short service life; high temperature resistance of silica gel, but slightly lower light transmittance and higher price; high temperature resistance (above 130°C), good dimensional stability and easy processing of pol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L83/04C08K5/544C08K9/06C08K9/04C08K9/02C08K3/34C08K5/3435C08K5/3475C08K13/06C08K5/00G02B1/04F21V5/04F21Y115/10
CPCC08L69/00G02B1/041F21V5/04F21Y2115/10C08L83/04C08K5/544C08K9/06C08K9/04C08K9/02C08K3/34C08K5/3435C08K5/3475C08K13/06C08K5/00
Inventor 孙丕亮熊波
Owner SHENZHEN FDL LIGHTING TECH
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