Black ultraviolet-transmitting quartz tube and preparation method thereof

A technology of ultraviolet and quartz tubes, applied in glass manufacturing equipment, manufacturing tools, glass molding, etc., can solve the problems of poor heating efficiency, high light transmittance, low refractive index, etc., and achieve wide light absorption range and good uniformity , good effect

Active Publication Date: 2010-05-19
LIANYUNGANG HONGYANG QUARTZ PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are two types of quartz glass tubes: transparent and milky white. Transparent quartz glass tubes have high light transmittance, low refractive index, and poor heating efficiency; milky white quartz glass tubes use air bubbles as the dispersed phase, although they heat up quickly. , but its uniformity is poor

Method used

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Embodiment Construction

[0018] A black UV-transparent quartz tube made of SiO 2 The content is greater than 99.98%, the impurity content is less than 20ppm, and the high-purity quartz sand is 40-160 mesh. Using high-purity quartz sand as the basic raw material by weight, with 0.5% to 4.0% by weight of coloring agent,

[0019] Wherein the coloring agent is made up of the following raw materials of weight ratio:

[0020] Sodium oxide Na 2 O 0.5~1.2 Glauber's salt Na 2 SO 4 0.1~0.3

[0021] Cuprous oxide Cu 2 O 0.2~0.5 Cobalt trioxide Co 2 o 3 0.05~0.1

[0022] Manganese dioxide MnO 2 0.1~0.4 Nickel oxide NiO 0.05~0.1.

[0023] The optimum weight portion of the coloring agent is 2.6%-3.0% of the high-purity quartz sand.

[0024] The formula one of coloring agent:

[0025] Sodium oxide Na 2 O 1.2 Glauber's salt Na 2 SO 4 0.3

[0026] Cuprous oxide Cu 2 O 0.5 cobalt trioxide Co 2 o 3 0.1

[0027] Manganese dioxide MnO 2 0.4 Nickel oxide NiO 0.1.

[0028] The for...

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Abstract

The invention relates to a black ultraviolet-transmitting quartz tube which is prepared by using high purity quartz sand as basic raw materials in parts by weight, and compounding 0.5-4.0 parts by weight of colorant, wherein the colorant comprises sodium oxide (Na2O), sodium sulphate (Na2SO4), cuprous oxide (Cu2O), cobalt sesquioxide (Co2O3), manganese dioxide (MnO2), nickel oxide (NiO) and the like. The black ultraviolet-transmitting quartz tube molded by drawing through adopting a tube wall integral coloring preparation process has good uniformity and toughness, strong compression resistance and wide light absorption range. The cutoff wavelength thereof can reach 2100 nanometers, and the transmission rate is about 63 percent.

Description

technical field [0001] The invention relates to a preparation technology of a quartz tube, in particular to a black ultraviolet-transmitting quartz tube. The invention also relates to a preparation method of the quartz tube. Background technique [0002] The thermal expansion coefficient of quartz glass is small, and it has the characteristics of high temperature resistance, ultraviolet and infrared transmission, and has been more and more widely used in industrial and civilian products. At present, there are two types of quartz glass tubes: transparent and milky white. Transparent quartz glass tubes have high light transmittance, low refractive index, and poor heating efficiency; milky white quartz glass tubes use air bubbles as the dispersed phase, although they heat up quickly. , but its uniformity is poor. Contents of the invention [0003] The technical problem to be solved by the present invention is to address the deficiencies of the prior art, and propose a black...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C1/04C03B20/00
Inventor 徐传龙
Owner LIANYUNGANG HONGYANG QUARTZ PROD
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