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A composite material with high reflectivity of short-wave ultraviolet light, its preparation process and application
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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: 2021-11-09
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.
Embodiment 2
[0053] Preparation of intermediate glass powder: 73 parts of silicon oxide, 4 parts of nano-alumina, 25 parts of borax, 4 parts of sodium carbonate, 4 parts of potassium carbonate, and 6 parts of bismuth oxide.
[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 composite material with high reflectance of short-wave ultraviolet light, its preparation process and application. The formula includes nano-aluminapowder, intermediate glass powder and silver powder. The formula of the intermediate glass powder includes siliconoxide, aluminum oxide, borax, sodiumcarbonate, potassiumcarbonate and bismuthoxide; the silver powder is nanometer silver powder. The present invention provides a high-reflectivity inorganic ternary composite material for the application of short-wave ultraviolet LEDs. According to experimental tests, the effective reflectance of 272nm ultraviolet light is 91%, which meets the requirements of commercial applications and is beneficial to the commercialization of short-wave ultraviolet LEDs. application. The invention belongs to the composite inorganic material system, can withstand the irradiation of ultraviolet light for a long time without aging and failure, has low material composition cost, and is easy to be widely popularized. The invention adopts all environment-friendly materials and the preparation process does not produce harmful substances.
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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