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A kind of reflective paint and preparation method thereof

A reflective paint, diffuse reflection technology, applied in the direction of reflection/signal paint, coating, etc., can solve the problems of high reflection brightness of mirror aluminum, human eye discomfort, shortened service life of lamps, etc., to improve the diffuse reflectivity, avoid glare Light effect, good thermal conductivity effect

Active Publication Date: 2017-05-03
SICHUAN SUNFOR LIGHT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the installation of reflectors has many disadvantages: first, the reflective brightness of mirror aluminum is high, which is prone to glare and causes discomfort to human eyes
The second mirror aluminum reflector occupies the original internal heat dissipation space of the LED lamp, which affects the heat of the lamp and shortens the service life of the lamp
Third, due to the limitation of the internal structure of the lamps, many lamps cannot be installed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0051] The present invention also discloses a preparation method of the reflective coating described in the above technical solution, comprising the following steps:

[0052] Mix 40-60wt% hydroxy acrylic resin, 10-20wt% diffuse reflection material, 3-10wt% precipitated barium sulfate, 5-10wt% glass flakes, 5-10wt% aluminum nitride and 10-20wt% aluminum oxide to obtain A component;

[0053] Mix 40-60wt% aliphatic polyisocyanate and 40-60wt% organic solvent evenly to obtain component B;

[0054] The A component and the B component are mixed according to a mass ratio of (2-6): 1 to obtain a reflective coating.

[0055] The selection of various raw materials and their contents is the same as the above-mentioned technical solution, and will not be repeated here. In the preparation process, firstly mix hydroxy acrylic resin, diffuse reflection material, precipitated barium sulfate, glass flakes, aluminum nitride, and aluminum oxide to obtain component A; mix aliphatic polyisocyana...

Embodiment 1

[0060] Mix 40kg of hydroxyacrylic resin, 10kg of aluminum tripolyphosphate, 3kg of precipitated barium sulfate, 5kg of glass flakes, 5kg of aluminum nitride and 10kg of aluminum oxide to obtain component A;

[0061] Mix 40kg aliphatic polyisocyanate and 60kg butyl acetate evenly to obtain component B;

[0062] The A component and the B component were mixed according to a mass ratio of 3:1 to obtain a reflective coating.

Embodiment 2

[0064] Mix 50kg of hydroxyacrylic resin, 15kg of titanium dioxide, 5kg of precipitated barium sulfate, 8kg of glass flakes, 7kg of aluminum nitride and 15kg of alumina to obtain component A;

[0065] Mix 50kg aliphatic polyisocyanate and 50kg butyl acetate evenly to obtain component B;

[0066] The A component and the B component were mixed according to a mass ratio of 4:1 to obtain a reflective coating.

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Abstract

The invention provides a reflective coating comprising a component A and a component B in the weight ratio of (2-6):1. The component A comprises 40-60wt% of acrylic acid hydroxy resin, 10-20wt% of a diffuse reflectance material, 3-10wt% of barium sulfate precipitate, 5-10wt% of glass flakes, 5-10wt% of aluminum nitride and 10-20wt% of alumina; and the component B comprises 40-60wt % of aliphatic polyisocyanate and 40-60wt% of an organic solvent. The reflective coating of the invention has high diffuse reflection rate, avoids the glare effect and has better heat conduction effects. Experimental effects show that the reflective coating of the invention diffuse reflection rate of greater than 90%, heat conduction coefficient of greater than 1.8 W / (M.K) and uniformity of greater than 0.8.

Description

technical field [0001] The invention relates to the field of LED lamps, in particular to a reflective coating and a preparation method thereof. Background technique [0002] LED lamps are lighting fixtures manufactured using semiconductor light-emitting diodes (LEDs) as light sources. It uses a solid semiconductor chip as a light-emitting material, and the excess energy is released through the recombination of carriers in the semiconductor to cause photon emission, and directly emit light of various colors such as red, yellow, blue, green, seed, and white. LED lamps have the advantages of energy saving, environmental protection and high efficiency, and are widely used in indoor and outdoor lighting, display screens of electronic devices, traffic lights, etc. [0003] In order to improve the light extraction efficiency, the existing LED lamps generally install reflectors made of mirror aluminum inside the lamps. The light emitted by the chip is reflected by the reflector to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/00C09D5/33
Inventor 李继王森赵昆
Owner SICHUAN SUNFOR LIGHT
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