Photodiffusion composite and preparation method thereof

A composite material and light diffusion technology, applied in the field of the preparation of new lighting chemical materials, can solve the problems of high cost and poor dispersibility, achieve high light transmittance and haze, solve the problem of uneven dispersion and good compatibility. Effect

Active Publication Date: 2014-01-01
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The traditional processing method just adds the light diffusing agent directly into the polymer, which is costly and the most important thing is that the dispersion is not good

Method used

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  • Photodiffusion composite and preparation method thereof
  • Photodiffusion composite and preparation method thereof
  • Photodiffusion composite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The light-diffusing composite material provided in this embodiment is composed of raw materials in the following weight ratio:

[0049] Polycarbonate 87.5%~96%

[0050] Organic light diffusion masterbatch 4%~12%

[0051] Inorganic light diffusion masterbatch 0~0.5%

[0052] Wherein, the organic light diffusion masterbatch is composed of raw materials in the following weight ratio:

[0053] Polycarbonate 90%

[0054] Light Diffuser 1 10%

[0055] Wherein, the inorganic light diffusion masterbatch is composed of raw materials in the following weight ratio:

[0056] Polycarbonate 90%

[0057] Light Diffuser 2 10%.

[0058] Said polycarbonate is bisphenol A polycarbonate with a melt index of 0.8-1.2 g / min.

[0059] The light diffusing agent 1 is polymethyl methacrylate and spherical silicone (KMP590), with a particle size of 1-5 um.

[0060] The light diffusing agent 2 is titanium dioxide with a particle size of 10-30 nm.

[0061] A method for preparing the above-m...

Embodiment 2

[0082] The light-diffusing composite material provided in this embodiment and its preparation method are basically the same as in Example 1, except that:

[0083] The light-diffusing composite material provided by the present invention is composed of raw materials in the following weight ratio:

[0084] Polycarbonate 96%

[0085] Organic Light Diffusion Masterbatch 4%

[0086] Wherein, the organic light diffusion masterbatch is composed of raw materials in the following weight ratio:

[0087] Polycarbonate 90%

[0088] Polymethylmethacrylate 10%;

[0089] A method for preparing the above-mentioned light-diffusing composite material, comprising the steps of:

[0090] (1) Preparation of organic light diffusion masterbatch:

[0091] (11) Take raw materials according to the following weight ratio:

[0092] Polycarbonate 90%

[0093] Polymethylmethacrylate 10%

[0094] (12) Mix polycarbonate and polymethyl methacrylate, and use a twin-screw machine to extrude and granulate....

Embodiment 3

[0101] The light-diffusing composite material provided in this embodiment and its preparation method are basically the same as those in Examples 1 and 2, except that:

[0102] The light-diffusing composite material provided by the present invention is composed of raw materials in the following weight ratio:

[0103] Polycarbonate 92%

[0104] Organic Light Diffusion Masterbatch 8%

[0105] Wherein, the organic light diffusion masterbatch is composed of raw materials in the following weight ratio:

[0106] Polycarbonate 90%

[0107] Polymethylmethacrylate 10%;

[0108] A method for preparing the above-mentioned light-diffusing composite material, comprising the steps of:

[0109] (1) Preparation of organic light diffusion masterbatch:

[0110] (11) Take raw materials according to the following weight ratio:

[0111] Polycarbonate 90%

[0112] Polymethylmethacrylate 10%

[0113] (12) Mix polycarbonate and polymethyl methacrylate, and use a twin-screw machine to extrude a...

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Abstract

The invention discloses a photodiffusion composite. The photodiffusion composite is characterized by comprising the following raw materials by weight: 87.5 to 96% of polycarbonate, 4 to 12% of organic photodiffusion master batch and 0 to 0.5% of inorganic photodiffusion master batch, wherein the organic photodiffusion master batch comprises, by weight, 90% of polycarbonate and 10% of a photodiffusing agent 1, and the inorganic photodiffusion master batch comprises, by weight, 90% of polycarbonate and 10% of a photodiffusing agent 2. The invention also discloses a preparation method for the photodiffusion composite. According to the invention, the method of addition of the master batch is employed, so the problem of nonuniform dispersion of the photodiffusing agents is overcome, and the photodiffusion composite has high light transmittance and haze; and addition of a small amount of the inorganic photodiffusion master batch enables the haze of the composite to be improved.

Description

technical field [0001] The invention relates to the technical field of preparation of new lighting chemical materials, in particular to a light-diffusing composite material and a preparation method thereof. Background technique [0002] Lighting is indispensable in human life. For lighting in most situations, it is required that the lighting light has a uniform spatial light intensity (or brightness). LED lights are a trend of future development, but their light-emitting area is small, accompanied by the problem of one-way glare. How to soften the light and reduce the loss of light energy is the problem solved by light diffusing agent and light diffusing masterbatch. [0003] The traditional light-diffusing composite material is to add an inorganic light-diffusing agent to the PC, and the light will be refracted many times through the surface of the tiny particles to achieve a uniform light effect. However, light cannot pass through these inorganic particles, and the loss...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L33/12C08K3/22B29C47/92B29C48/92
CPCB29C48/04
Inventor 丁鹏施利毅巴超群宋娜
Owner SHANGHAI UNIV
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