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Light scattering material containing compound eye-like structure scatterer

A scatterer and light scattering technology, applied in optics, optical components, instruments, etc., can solve the problems of inconvenient optical performance, loss of scattering range, single scattering particles, etc., and achieve easy mold processing, low manufacturing cost, and large scattering range Effect

Pending Publication Date: 2018-12-07
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this kind of light-scattering material has the following disadvantages: 1. It can only produce a single light-scattering effect, and the scattering range is small; 2. The scattering particles are single, which is inconvenient to adjust the optical properties of the material; 3. When made into an anisotropic light-scattering material, While increasing the scattering range in one direction, the scattering range in the other direction will be lost

Method used

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  • Light scattering material containing compound eye-like structure scatterer

Examples

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Effect test

Embodiment 1

[0032] 70 parts by mass of polycarbonate (PC), 30 parts by mass of acrylonitrile copolymer (SAN) and 3.3% of the total weight of SAN with a diameter of 2 μm silicon dioxide (SiO 2 ) were melt-blended by a torque rheometer and granulated to obtain polycarbonate composite particles, which were molded at 240°C to obtain an isotropic light-scattering sheet with a thickness of 0.6 mm. The measured transmittance is 73%, the haze is 87.5%, and the scattering angle is 30°.

Embodiment 2

[0034] 70 parts by mass of polycarbonate (PC), 30 parts by mass of acrylonitrile copolymer (SAN) and 3.3% of the total weight of SAN polymethylsilsesquioxane beads (OSB2) with a diameter of 5 μm were subjected to torque flow Polycarbonate composite particles were obtained by melting and blending with a variable instrument, and granulated. The composite particles were molded at 240° C. to obtain an isotropic light-scattering sheet with a thickness of 0.6 mm. The measured transmittance is 82.3%, the haze is 93.6%, and the scattering angle is 27°.

Embodiment 3

[0036] 70 parts by mass of polycarbonate (PC), 30 parts by mass of acrylonitrile copolymer (SAN) and polymethylsilsesquioxane beads (OSB3) with a diameter of 10 μm accounting for 6.7% of the total weight of SAN were subjected to torque flow Polycarbonate composite particles were obtained by melt blending and granulation, and the composite particles were molded at 240°C into a sample of 100.0 mm (length) × 30.0 mm (width) × 1 mm (thickness). Then the sample was fixed in a high-temperature universal tensile testing machine and thermally stretched at 190°C with a stretch ratio of 2. The scattering angle in the short-axis scattering direction is measured to be 22.0º, and the scattering angle in the long-axis scattering direction is 32.3º.

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Abstract

The invention provides a light scattering material containing a compound eye-like structure scatterer. The light scattering material is characterized in that both a matrix and a first scatterer of thelight scattering material are both transparent polymers, and particles with a smaller particle size are introduced as a second scatterer into the polymer scatter so as to form the compound eye-like structure composite scatterer, wherein the first scatterer is a "big eye" and the second scatterer is a "small eye". The "small eye" scatterer is selectively distributed in the "big eye" scatterer or at the interface of the "big eye" scatterer and the matrix. The light scattering material not only retains the high haze, high transmittance and other excellent properties of the traditional sea-islandlike structure light scattering materials, but also can improve the scattering angle through the multiple scattering effect of the "compound eye" scatterer.

Description

technical field [0001] The invention belongs to the field of polymer-based composite material preparation technology, and in particular relates to a preparation method of a light scattering material containing a "compound eye" structure scatterer. The method is characterized in that the light-scattering material containing a "compound-eye" structure scatterer is prepared by a melt-blending method. Using the multiple scattering effect of the "compound eye" structure scatterer, this type of light scattering material has excellent optical properties such as high haze, high transmittance and large scattering angle. Background technique [0002] Light-scattering materials are often used in LED lighting housing materials, which can not only allow light to pass through, but also scatter incident light evenly in different directions, shielding light sources, reducing dizziness caused by light refraction, and avoiding light damage to human eyes . The preparation of light-scattering...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L25/12C08L83/04C08K3/36C08K9/06C08K3/26G02B1/04
CPCC08K2003/265C08K2201/003C08K2201/011C08L69/00G02B1/04C08L25/12C08K3/36C08L83/04C08K9/06C08K3/26
Inventor 熊英丁奕同郭少云赵梓汝
Owner SICHUAN UNIV
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