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High-light-transmission anti-glare polycarbonate material and preparation method thereof

A polycarbonate and anti-glare technology, applied in the field of polycarbonate materials, can solve problems such as the influence of lamp brightness, poor light divergence, and complicated processes

Active Publication Date: 2013-12-04
GUANGDONG SILVER AGE SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this comparative document has the following disadvantages: 1. The weight ratio of the main antioxidant to the auxiliary antioxidant is 1:2, and the amount of the auxiliary antioxidant is larger than that of the main antioxidant, which reduces the light transmittance of the product
2. There is no lubricant added in this reference document, which is not conducive to product processing and demoulding. The release agent used in this reference document only plays the role of external lubrication, which is conducive to product demoulding, but it does not achieve uniform dispersion of materials. , The role of internal lubrication in the processing and plasticization of material extrusion process
3. The comparison document also includes a light guide agent, the introduction of low molecular weight materials, the product is prone to stress defects after a period of use, the product is easy to become brittle, and the quality is poor
4. In terms of preparation method, this reference document needs to prepare polycarbonate light-diffusing masterbatch to realize the dispersion effect of light-diffusing agent in light-diffusing polycarbonate material, and the complex process is not conducive to industrial production
5. The total light transmittance of the light-diffusing polycarbonate material prepared in this reference document is low, and the total light transmittance is only 56-83%, which affects the brightness of the lamp and has a low haze value. The haze is only 11-20, which has poor light divergence effect and affects the anti-glare effect of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072]A kind of high light transmittance, antiglare polycarbonate material of the present embodiment, comprise the raw material component of following mass percent: Bayer's 2805 bisphenol A type polycarbonate 99.1%, particle diameter is 2 microns, refractive index 0.25% of 1.4 polymethylsilicon spherical particles, 0.25% of polymethylsilicon spherical particles with a particle size of 4 microns and a refractive index of 1.4, 0.1% of tris(2,4-di-tert-butylphenyl) phosphite , octadecyl-3,5-bis(1,1-dimethylethyl)-4-hydroxyphenylpropionate 0.1%, octadecanoic acid-2-(hydroxymethyl)-2-[[ (1-oxoctadecyl)oxy]methyl]-1,3-propanediyl ester 0.1%, 2-hydroxy-4-n-octyloxybenzophenone 0.1%.

[0073] The preparation method is as follows: Step 1: put silicon-based light diffusing agent A, silicon-based light diffusing agent B, antioxidant A, flame retardant B, lubricant, and light stabilizer into a high-speed mixer and stir evenly. The stirring speed is 100r / min, and the stirring time is 4min...

Embodiment 2

[0076] A kind of high light transmission, anti-glare polycarbonate material of the present embodiment, comprises the raw material component of following mass percent: Teijin's 1250Z bisphenol A type polycarbonate 98.6%, particle diameter is 2.2 microns, and refractive index is 1.43 0.5% of polymethyl silicon spherical particles, 0.5% of polymethyl silicon spherical particles with a particle size of 4.5 microns and a refractive index of 1.43, 0.1% of tris(2,4-di-tert-butylphenyl) phosphite, Octadecyl-3,5-bis(1,1-dimethylethyl)-4-hydroxyphenylpropionate 0.1%, octadecanoic acid-2-(hydroxymethyl)-2-[[( 1-oxoctadecyl)oxy]methyl]-1,3-propanediyl ester 0.1%, 2-hydroxy-4-n-octyloxybenzophenone 0.1%.

[0077] The preparation method is as follows: Step 1: put silicon-based light diffusing agent A, silicon-based light diffusing agent B, antioxidant A, flame retardant B, lubricant, and light stabilizer into a high-speed mixer and stir evenly. The stirring speed is 140r / min, and the stirr...

Embodiment 3

[0079] A kind of high light transmittance, anti-glare polycarbonate material of the present embodiment, comprise the raw material component of following mass percentage: Dow's 1201-10 bisphenol A type polycarbonate 98.1%, particle diameter is 2.4 microns, refractive index 0.5% of polymethylsilicon spherical particles with a ratio of 1.45, 0.5% of polymethylsilicon spherical particles with a particle size of 5 microns and a refractive index of 1.45, tris(2,4-di-tert-butylphenyl) phosphite 0.2%, octadecyl-3,5-bis(1,1-dimethylethyl)-4-hydroxyphenylpropionate 0.2%, octadecanoic acid-2-(hydroxymethyl)-2- [[(1-oxoctadecyl)oxy]methyl]-1,3-propanediyl ester 0.2%, 2-hydroxy-4-n-octyloxybenzophenone 0.3%.

[0080] The preparation method is as follows: Step 1: put silicon-based light diffusing agent A, silicon-based light diffusing agent B, antioxidant A, flame retardant B, lubricant, and light stabilizer into a high-speed mixer and stir evenly. The stirring speed is 180r / min, and the s...

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Abstract

The invention relates to the technical field of polycarbonate materials, in particular to high-light-transmission anti-glare polycarbonate material which comprises the following raw materials by weight: 94.5-99.1% of polycarbonate, 0.25-2.0% of silicon light diffusion agent A, 0.25-2.0% of silicon light diffusion agent B, 0.1-0.3% of antioxidant A, 0.1-0.3% of antioxidant B, 0.1-0.3% of a lubricating agent and 0.1-0.7% of light stabilizer, wherein the sum of the mass percent of the components is 100%. The preparation method comprises the following steps: stirring the components by using a high-speed stirrer except for the polycarbonate; putting the polycarbonate and the stirred materials into the high-speed stirrer for uniformly stirring in a three-stage manner; and extruding the materials by using a twin-screw extruder for pelletizing. The polycarbonate material has the advantages of high light transmission, glare prevention, simple and mature process and is beneficial to universally popularizing and applying, and the requirement of outdoor lighting lampshades can be met.

Description

technical field [0001] The invention relates to the technical field of polycarbonate materials, in particular to a polycarbonate material with high light transmission and anti-glare and a preparation method thereof. Background technique [0002] Light-emitting diodes (Light Emitting Diode, LED) are increasingly widely used in the fields of display, transportation, electrical appliances and lighting due to their small size, long life, rich color rendering and outstanding energy-saving and environmental protection characteristics. , one of the key technologies for cleaner production and sustainable development. [0003] Due to the light-emitting characteristics of its point light source, LEDs have disadvantages in the field of lighting, such as glare and small lighting area, compared with conventional light sources. In order to make up for the lack of application of LED light sources in the field of lighting, it is necessary to use special materials to transform the luminous ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08L83/04C08K5/00C08K5/526C08K5/134C08K5/132
Inventor 邓虎傅轶谭颂斌招启强
Owner GUANGDONG SILVER AGE SCI & TECH CO LTD
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