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A kind of deep ultraviolet phosphate glass and its preparation method and application

A technology of phosphate glass and deep penetration, which is applied in the field of special glass materials and its preparation, and can solve the problems that the transmittance cannot meet the requirements of deep ultraviolet detection

Active Publication Date: 2021-09-28
CHINA BUILDING MATERIALS ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Foreign UV-transparent glass materials mainly include German SCHOTT 8337B and American Corning 9471 UV-transparent glass materials, but the transmittance of both of them at 185-280nm cannot meet the detection requirements for deep ultraviolet penetration

Method used

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  • A kind of deep ultraviolet phosphate glass and its preparation method and application
  • A kind of deep ultraviolet phosphate glass and its preparation method and application
  • A kind of deep ultraviolet phosphate glass and its preparation method and application

Examples

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preparation example Construction

[0052] The present invention also provides a method for preparing the above-mentioned deep ultraviolet phosphate glass, comprising the following steps:

[0053] (1) Iron removal and conversion: The raw materials are subjected to iron removal treatment, and then the high-purity raw materials are proportioned according to the designed components. According to the weight percentage of each component, the corresponding raw material weights are converted to obtain the corresponding raw material weights, and then the raw materials are weighed. Mix to obtain mixed powder;

[0054] In the present invention, the main raw materials are subjected to iron removal treatment to improve the purity of glass raw materials, strictly control the batching utensils, and avoid introducing new impurities in the process, and the materials such as measuring tools and containers used in the batching operation should be made of aluminum, and the mixing machine Containers and storage batches are all made...

Embodiment 1

[0076] First, select the glass raw material according to the glass composition of Example 1 in Table 1, and carry out iron removal treatment to improve the purity of the glass raw material with the main raw materials in the glass raw material, and the oxides of variable valence elements such as Fe 2 o 3 etc. are strictly controlled, and the finished glass Fe 2 o 3 The content is less than 1PPm, the high-purity quartz sand (Fe 2 o 3 Content less than 1PPm), high-purity phosphoric acid, aluminum acetate (analytical pure) mixed evenly, and then add alkali metal to introduce raw material sodium carbonate (analytical pure) to mix, so as to avoid chemical reaction during mixing, and the prepared batch should not be placed If the time is too long, the feeding operation should be carried out as soon as possible to avoid the reaction between phosphoric acid and raw materials to cause agglomeration. Phosphoric acid volatilizes a lot. In order to ensure that the prepared glass is bas...

Embodiment 2

[0078] Refer to Example 2 in Table 1 for the actual composition of the glass, use the same raw materials and raw material requirements as in Example 1, and heat in a glass melting furnace with a pre-melting temperature of 700 °C for 80 minutes, and then continue to heat up at a heating rate of 5 °C / min to 1350°C, melting process system for 4 hours, and select the heat-resistant steel mold preheated to 550°C to pour into the specified test product and the same test conditions as in Example 1, the basic properties of the sample are shown in Table 1. performance. (1) The UV light transmittance reaches 81.4% at a wavelength of 254nm; (2) The average linear expansion coefficient at 30-300°C is 52.1×10 -7 / °C.

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Abstract

The invention discloses a deep ultraviolet-transmitting phosphate glass and its preparation method and application. The ultraviolet-transmitting glass consists of the following components in weight percent: 50.0-79.5%P 2 o 5 , 3.0‑20.0% SiO 2 , 2.0‑9.0% Al 2 o 3 , 0‑5.0% Na 2 O, 5.0‑9.0% CaO, 5.0‑10.0% BaO, 0‑5.0% ZnO, 0.5‑9.0% ZrO 2 , when the thickness of the UV transparent glass is 1.0mm, its transmittance at 254nm is above 80%, and the coefficient of thermal expansion is (53±3)×10 in the range of 30-300°C ‑7 / °C, has a high transition temperature, the transition temperature is greater than 600°C, has good chemical stability, and has chemical resistance level II; the preparation method of the deep ultraviolet glass of the present invention is simple, environmentally friendly and pollution-free, and does not introduce harmful substances to the environment. Heavy metal ions, low melting temperature.

Description

technical field [0001] The invention relates to the technical field of special glass materials and their preparation, in particular to a deep ultraviolet phosphate glass and its preparation method and application. Background technique [0002] Ultraviolet radiation is a kind of electromagnetic wave ubiquitous in nature. The light with a wavelength of less than 380nm in the solar spectrum is called ultraviolet radiation (Ultraviolet Radiation), which plays an important role in ultraviolet sterilization, ultraviolet counterfeiting, ultraviolet lighting, etc. , eyes, etc. will also produce certain harm. Ultraviolet rays are divided into three types according to their wavelength range: UV-A (315-380nm), UV-B (280-315nm), and UV-C (100-280nm). The ultraviolet rays contained in sunlight pass through the atmosphere and are less than 290nm Most of the UV-C is absorbed by the ozone layer in the atmosphere. This part of the ultraviolet spectral region is called the "solar blind zone"...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C3/062C03C13/04
CPCC03C3/062C03C13/045
Inventor 张磊侯伟杰周游汤晓峰王云付杨
Owner CHINA BUILDING MATERIALS ACAD
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