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PC material with low blue light transmittance

A transmittance and blue light technology, applied in the field of low blue light transmittance PC materials, can solve the problems of poor environmental protection, reduce blue light transmittance, and reduce the transmittance of blue light absorbers, and achieve the effect of reducing the decrease in light transmittance.

Active Publication Date: 2017-12-15
宁波公牛光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Commonly used methods to solve the problem of high blue light transmittance, first, can absorb blue light by spraying a blue light absorbing coating to reduce the blue light transmittance, but the spraying itself is not environmentally friendly, and the sprayed coating is in the relative position of the LED light source. Cracks are prone to occur in a high-temperature environment, resulting in failure to absorb blue light
Second, it can be pasted with a blue light filter film. Generally, myopia glasses can absorb blue light in this way. However, in the high-temperature environment of the LED, the linear expansion coefficient of the blue light filter film and the light diffusion cover will also appear inconsistent. , and the problem of deformation failure occurs, if the blue light absorber is directly introduced into the main material, it will easily lead to the problem of the decrease of light transmittance caused by the addition of the blue light absorber

Method used

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  • PC material with low blue light transmittance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] With HCL (hydrochloric acid), HNO 3 One or two mixtures of (nitric acid) to prepare a corrosive acid solution, in which HCL and HNO 3 The volume ratio is 10:1-3, the concentration of HCL is 1-2%, HNO 3 The concentration is 0.5-1%, in the acid solution, add the volume of HCL, HNO 3 The total volume of the mixed solution is 1-2%, and the concentration is 0.05% corrosion inhibitor LAN-826 to reduce the corrosion inhibition rate. Then put the light diffusing agent into the prepared corrosion acid solution for microporous corrosion, and the corrosion time is 13-17s. Then wash away the acid and corrosion inhibitor on the surface of the light diffusing agent with deionized water. A light diffusing agent with a micropore diameter of 0.05-0.08 μm is obtained.

[0029] According to the number of parts by mass, dry 1 part of light diffusing agent and 0.05 part of blue light absorbing agent at 75°C for 4-5 hours, and then add them to a high-speed mixer for mixing at a speed of ...

Embodiment 2

[0031] The pre-micropore treatment of the light diffusing agent is the same as in Example 1. According to the mass parts, 1 part of the light diffusing agent and 0.1 part of the blue light absorbing agent are dried at 75°C for 4-5 hours, and then mixed in a high-speed mixer at a speed of 4000-5000r / min, the blue light absorbing agent is filled in the micropores of the light diffusing agent, and the light diffusing-blue light absorbing agent of Example 2 is obtained.

Embodiment 3

[0033] The pre-micropore treatment of the light diffusing agent is the same as in Example 1. According to the mass parts, 1.5 parts of the light diffusing agent and 0.1 part of the blue light absorbing agent are dried at 75°C for 4-5 hours, and then mixed in a high-speed mixer at a speed of 4000-5000r / min, the blue light absorbing agent is filled in the micropores of the light diffusing agent, and the light diffusion-blue light absorbing agent of Example 3 is obtained.

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Abstract

The invention discloses a PC material with low blue light transmittance. The PC material is mainly prepared from the following raw materials in parts by weight: 100 parts of PC, 1-2 parts of a light diffusing agent and 0.05-0.2 parts of a blue light absorbing agent, and also comprises the following raw materials in parts by weight: 0.2-0.5 parts of a lubricant and 0.2-0.3 parts of an antioxidant, wherein the lubricant is one or a mixture of EBS and dibutyl maleate. The PC material with low blue light transmittance provided by the invention can effectively reduce a problem of decrease of the light transmittance caused by adding the blue light absorbing agent, has long-term absorption for the blue light, and has low probability of deformation.

Description

technical field [0001] The invention relates to a PC material with low blue light transmittance. Background technique [0002] Visible light is composed of seven colors of light: red, orange, yellow, green, cyan, blue, and purple. Among them, light with a wavelength of 435-500 nanometers corresponds to blue and cyan. The scientific community usually regards the wavelength range of 400-500 nanometers as Known as the "Blu-ray Zone". [0003] The LED light source is widely used in people's daily life today by assembling a light diffusion cover to disperse the light evenly to present a soft surface light source. LED light sources generally use blue light with a wavelength of 450nm-470nm to excite yellow phosphor to obtain white light. The proportion of blue light in the spectrum of this white light is much higher than that of visible light. Among them, the short-wave blue light with a wavelength between 400nm and 470nm has relatively high energy light. Blue light within this ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L83/04C08K9/12
CPCC08L69/00C08L83/04C08K9/12
Inventor 李洋洋申会员何洋孔德玉牛占彪宋成科邵景昌
Owner 宁波公牛光电科技有限公司
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