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PMMA light diffusion agent and light diffusion PMMA material

A light diffusing agent and light diffusing technology, used in the field of light diffusing PMMA materials and PMMA light diffusing agents, can solve the problem of unstable light transmittance performance, decreased light transmittance, anti-aging performance, and impact strength of PMMA materials. Stable thermal processing It can achieve excellent impact resistance, excellent atomization effect, and improve the effect of atomization effect.

Active Publication Date: 2014-10-22
广西海枫光学材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The material has good performance in light transmittance and refractive index, but the anti-aging performance, impact strength, thermal processing stability and other indicators of the material are affected to a certain extent.
At the same time, the light transmittance performance of the above-mentioned PMMA material is not stable, especially when used in LED lighting products, it is easy to age after working for a long time, high temperature, and strong light, which eventually leads to a decrease in light transmittance.

Method used

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  • PMMA light diffusion agent and light diffusion PMMA material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A PMMA light diffusion agent with high light transmittance and high haze, its raw materials include the following components in parts by weight:

[0046] 75 parts of frozen finely pulverized polysiloxane particles;

[0047] Light scattering agent 1 1.3 parts;

[0048] Light scattering agent 2 6.5 parts;

[0049] 2 parts curing agent;

[0050] 0.2 parts of compatibilizer;

[0051] The light scattering agent 1 is a substance having the following structure

[0052] ;

[0053] The light scattering agent 2 is a substance having the following structure

[0054] ;

[0055] The compatibilizer is 0.04 parts by weight of cetyltrimethylammonium bromide and 0.3 parts of ethyl acetoacetate; the curing agent is a mixture of persulfate and tetrahydrofuran; The siloxane particles refer to the polysiloxane particles obtained by cooling the polysiloxane particles with an average particle diameter of 2.5 μm to -17° C., and then pulverizing them with 80 KHz ultrasonic waves.

...

Embodiment 2

[0060] A PMMA light diffusion agent with high light transmittance and high haze, its raw materials include the following components in parts by weight:

[0061] 80 parts of frozen finely pulverized polysiloxane particles;

[0062] 1 1 parts of light scattering agent;

[0063] 28 parts of light scattering agent;

[0064] 0.5 parts of curing agent;

[0065] 0.3 parts of compatibilizer;

[0066] The light scattering agent 1 is a substance having the following structure

[0067] ;

[0068] The light scattering agent 2 is a substance having the following structure

[0069] ;

[0070] The compatibilizer is 0.01 part by weight of cetyltrimethylammonium bromide and 0.5-0.7 part of ethyl acetoacetate; the curing agent is a mixture of persulfate and tetrahydrofuran; The pulverized polysiloxane particles refer to polysiloxane particles obtained by pulverizing polysiloxane particles with an average particle diameter of 2.5 μm to -20° C. with 60 KHz ultrasonic waves.

[0071] T...

Embodiment 3

[0075] A PMMA light diffusion agent with high light transmittance and high haze, its raw materials include the following components in parts by weight:

[0076] 50 parts of frozen finely pulverized polysiloxane particles;

[0077] 12 parts of light scattering agent;

[0078] 25 parts of light scattering agent;

[0079] 2.5 parts of curing agent;

[0080] 0.1 part of compatibilizer;

[0081] The light scattering agent 1 is a substance having the following structure

[0082] ;

[0083] The light scattering agent 2 is a substance having the following structure

[0084] ;

[0085] The compatibilizer is 0.07 parts by weight of cetyltrimethylammonium bromide and 0.5 parts of ethyl acetoacetate; the curing agent is a mixture of persulfate and tetrahydrofuran; The siloxane particles refer to the polysiloxane particles obtained by cooling the polysiloxane particles with an average particle diameter of 2.5 μm to -20° C., and then pulverizing them with 60 KHz ultrasonic waves....

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Abstract

The invention discloses a PMMA light diffusion agent. Raw materials of the PMMA light diffusion agent comprise frozen micro-grounded polysiloxane particles, a light diffusion agent 1, a light diffusion agent 2, a curing agent and a compatilizer. By adopting a low-temperature freezing and ultrasonic grinding method, market available polysiloxane particles are converted into low-temperature micro-grounded polysiloxane particles. The low-temperature micro-grounded polysiloxane particles are added in the PMMA material, and enable the PMMA material to gain an excellent atomization effect. The low-temperature micro-grounded polysiloxane particles overcome influences of an organosilicone light diffusion agent to the PMMA material, so that the prepared light diffusion PMMA material can keep excellent performances such as impact resistance, oxidation resistance and processing heat stability.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a PMMA light diffusing agent and a light diffusing PMMA material. Background technique [0002] Light-diffusing materials refer to materials that can convert point and line light sources into line and surface light sources. They are generally prepared by dispersing light-diffusing particles with a different refractive index from the substrate in a transparent substrate. They were mostly used as backlight materials for liquid crystal displays in the early days. , also known as light scattering material or astigmatism material. The use of light-diffusing materials for light-emitting diode (LED) lighting is a new field of application that has opened up in recent years. LED lighting is stronger than LCD backlight, and has higher soft light performance; the light diffusing material used for LED lighting must minimize light loss while diffusing light, and have good toughness...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/04C08K5/101C08K5/20C08L33/12
CPCC08K5/01C08K5/20C08L83/04
Inventor 林湖彬杜崇铭
Owner 广西海枫光学材料科技有限公司
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