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Diffuse reflection coating and diffuse reflection coating layer

A diffuse reflection and coating technology, which is applied in the field of diffuse reflection coating and diffuse reflection coating, can solve the problems of high raw material cost and low reflectivity of diffuse reflection coating, achieve excellent reflectivity, reduce raw material cost, and broaden the application field Effect

Active Publication Date: 2022-02-01
NINGBO RADI COOL ADVANCED ENERGY TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Diffuse reflection coatings formed by diffuse reflection coatings can even out light and eliminate glare or spots, so they are widely used in display backplanes, LED lamps and other components. However, traditional diffuse reflection coatings generally use barium sulfate as a functional filler , the diffuse reflection coating has excellent reflectivity only in the 0.4μm-1.1μm band, and the reflectivity of the 0.3μm-0.4μm and 1.1μm-2.5μm bands is low, so it is difficult to be well applied to simulate the full sunlight In the integrating sphere and other components in the wavelength band, and in order to make the reflectivity of the diffuse reflection coating reach 99% in the 0.4μm-1.1μm band, the thickness of the diffuse reflection coating needs to reach more than 500μm, resulting in the raw material of the diffuse reflection coating high cost

Method used

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  • Diffuse reflection coating and diffuse reflection coating layer
  • Diffuse reflection coating and diffuse reflection coating layer
  • Diffuse reflection coating and diffuse reflection coating layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] The diffuse reflective paint in Example 1 includes a first paint and a second paint used in conjunction with the first paint.

[0073] Wherein, the first coating includes the first resin: 100 parts by weight of acrylic resin, 100 parts by weight of the first filler 101, coalescent: 4.2 parts by weight of propylene glycol butyl ether, dispersant: 3.1 parts by weight of polyacrylate, Thickener: 3.5 parts by weight of hydroxyethyl cellulose ether, defoamer: 1.2 parts by weight of silicone defoamer; wherein, the shape of the first filler 101 is burr-like, and the core 1011 of the first filler 101 The material is rutile titanium dioxide, the particle size of the core 1011 is 0.4 μm-0.6 μm, the material of the shell layer 1012 is alumina, and has a double-layer structure, and the average thickness is 0.1 μm-0.2 μm. The refractive index of the first filler 101 is index of 2.7, the refractive index of the first resin is 1.5, the absolute value of the difference between the refr...

Embodiment 2

[0077] Embodiment 2 Referring to the embodiment of Embodiment 1, the difference is that the material of the core 1011 of the first filler 101 is anatase titanium dioxide, the refractive index of the first filler 101 is 2.6, and the refractive index of the first resin is the same as that of the first resin. The absolute value of the difference in refractive index of the first filler 101 is 1.1, and the reflectance of the first filler 101 in the 0.4 μm-2.5 μm wave band is 92%.

Embodiment 3

[0079] Example 3 Referring to the implementation of Example 1, the difference is that the material of the shell layer 1012 of the first filler 101 is silicon oxide, the refractive index of the first filler 101 is 2.5, and the refractive index of the first resin is the same as that of the first filler. The absolute value of the difference in the refractive index of 101 is 1.0, and the reflectance of the first filler 101 in the 0.4 μm-2.5 μm wave band is 93%.

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Abstract

The invention relates to a diffuse reflection coating and a diffuse reflection coating layer. The diffuse reflection coating comprises a first coating and a second coating used in cooperation with the first coating, the first coating comprises first resin and a first filler, the absolute value of the difference value between the refractive index of the first resin and the refractive index of the first filler is larger than or equal to 1, the reflectivity of the first filler at the wave band of 0.4-2.5 [mu]m is greater than or equal to 92%, the second coating comprises second resin and second filler, and the reflectivity of the second filler at the wave band of 0.3-0.4 [mu]m is greater than or equal to 90%. When the thickness of the diffuse reflection coating layer prepared by using the reflective coating is smaller than or equal to 300 [mu]m, the diffuse reflection coating layer has excellent reflectivity on full-wave-band sunlight, the application field of the diffuse reflection coating is widened, and the raw material cost of the diffuse reflection coating is effectively reduced.

Description

technical field [0001] The invention relates to the technical field of materials, in particular to a diffuse reflection coating and a diffuse reflection coating. Background technique [0002] Diffuse reflection coatings formed by diffuse reflection coatings can even out light and eliminate glare or spots, so they are widely used in display backplanes, LED lamps and other components. However, traditional diffuse reflection coatings generally use barium sulfate as a functional filler , the diffuse reflection coating has excellent reflectivity only in the 0.4μm-1.1μm band, and the reflectivity of the 0.3μm-0.4μm and 1.1μm-2.5μm bands is low, so it is difficult to be well applied to simulate the full sunlight In the integrating sphere and other components in the wavelength band, and in order to make the reflectivity of the diffuse reflection coating reach 99% in the 0.4μm-1.1μm band, the thickness of the diffuse reflection coating needs to reach more than 500μm, resulting in the...

Claims

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Application Information

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IPC IPC(8): C09D133/00C09D5/33C09D7/61C09D163/00C09D175/04B05D7/24
CPCC09D133/00C09D5/004C09D7/61C09D7/70C09D163/00C09D175/04B05D7/544B05D7/24C08K2003/2241C08K2003/2227C08K2003/222C08K3/22C08K3/36C08K7/00C08K7/18
Inventor 万容兵陈孝行万亚飞杨荣贵
Owner NINGBO RADI COOL ADVANCED ENERGY TECH CO LTD
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