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Short-wave ultraviolet light high-reflectivity composite material, preparation process and application thereof
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A high-reflectivity, composite material technology, applied in manufacturing tools, glass manufacturing equipment, optics, etc., can solve problems such as unconsidered material reflection, aging failure, etc., to achieve commercial application, low composition cost, and easy to be widely promoted Effect
Active Publication Date: 2020-06-23
惠州市多维态新材料有限公司
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[0004] Traditional short-wavelength ultraviolet LED packaging generally does not consider the reflection of materials. Although there are similar organic composite materials used for short-wavelength ultraviolet LED high-reflective materials, long-term exposure to ultraviolet light will cause aging and failure of organic materials. Therefore, existing There are very few materials in the system that can satisfy the following three conditions at the same time:
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Embodiment 1
[0048] Preparation of intermediate glass powder: 70 parts of silicon oxide, 3 parts of nano-alumina, 20 parts of borax, 2 parts of sodiumcarbonate, 2 parts of potassium carbonate, and 3 parts of bismuth oxide.
[0049] (1) Weighing raw materials: 70 parts of silicon oxide, 3 parts of nano-alumina, 20 parts of borax, 2 parts of sodium carbonate, 2 parts of potassium carbonate, 3 parts of bismuth oxide;
[0050] (2) drying the raw materials weighed in step (1), weighing and mixing, and mixing uniformly in a planetary mill;
[0051] (3) Melting the mixture obtained in step (2) to obtain intermediate glass powder.
[0054] (1) Weighing raw materials: 73 parts of silicon oxide, 4 parts of nano-alumina, 25 parts of borax, 4 parts of sodium carbonate, 4 parts of potassium carbonate, 6 parts of bismuth oxide;
[0055] (2) drying the raw materials weighed in step (1), weighing and mixing, and mixing uniformly in a planetary mill;
[0056] (3) Melting the mixture obtained in step (2) to obtain intermediate glass powder.
Embodiment 3
[0058] Preparation of intermediate glass powder: 75 parts of silicon oxide, 5 parts of nano-alumina, 30 parts of borax, 5 parts of sodium carbonate, 5 parts of potassium carbonate, and 10 parts of bismuth oxide.
[0059] (1) Weighing raw materials: 75 parts of silicon oxide, 5 parts of nano-alumina, 30 parts of borax, 5 parts of sodium carbonate, 5 parts of potassium carbonate, 10 parts of bismuth oxide;
[0060] (2) drying the raw materials weighed in step (1), weighing and mixing, and mixing uniformly in a planetary mill;
[0061] (3) Melting the mixture obtained in step (2) to obtain intermediate glass powder.
[0062] Embodiment 1-3 result is as shown in table 1:
[0063] Table 1 Physical properties of intermediate glass materials with different components
[0064]
[0065]
[0066] Other conditions are basically the same, and the best formula for selecting intermediate glass powder according to the dielectric constant is: 73 parts of silicon oxide, 4 parts of nano...
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Abstract
The invention discloses a short-wave ultraviolet light high-reflectivitycomposite material, a preparation process and application thereof. The formula comprises nano aluminum oxidepowder, intermediate glass powder and silver powder. The formula of the intermediate glass powder comprises siliconoxide, aluminum oxide, borax, sodiumcarbonate, potassiumcarbonate and bismuth oxide, and the silverpowder is nano silver powder. The inorganic ternary composite material with high reflectivity is provided for application of short-wave ultraviolet LEDs, and experimental tests show that the effectivereflectivity of ultraviolet light with the wavelength of 272 nm is 91%, so that the requirement of commercial application is met, and commercial application of the short-wave ultraviolet LEDs is facilitated. The material belongs to a composite inorganic material system, can bear ultraviolet irradiation for a long time without aging failure, and is low in material composition cost and easy to widely popularize. Environment-friendly materials are completely adopted, and harmful substances are not generated in the preparation process.
Description
technical field [0001] The invention relates to a nanocomposite material, in particular to a composite material with high reflectivity of short-wave ultraviolet light, its preparation process and application. Background technique [0002] Ultraviolet light usually refers to the wavelength between 100nm and 400nm, which can be divided into three categories: extreme ultraviolet, deep ultraviolet, and near ultraviolet. Extreme ultraviolet light refers to ultraviolet light with a wavelength below 200 nanometers. The conditions for obtaining extreme ultraviolet light are too harsh and are relatively seldom used; deep ultraviolet light usually refers to ultraviolet light with a wavelength between 200 and 280 nanometers, also known as short-wave ultraviolet light. This wavelength is easily absorbed by metal and glass materials, so the reflectance is usually low or not reflected at all. Among them, ultraviolet light with a wavelength of 100-254 nanometers has high ionization energy...
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