Yellow filter quartz tube and preparation method thereof
A quartz tube, yellow technology, applied in the field of quartz tube preparation, can solve the problems of low refractive index, high light transmittance, poor uniformity, etc., and achieve the effects of stable filter performance, large light absorption range and good uniformity.
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[0018] A yellow filter quartz tube, canary yellow in color. Using 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. High-purity quartz sand is used as the basic raw material by weight, and 0.7% to 1.35% by weight of coloring agent is added.
[0019] Wherein the coloring agent is made up of the following raw materials of weight ratio:
[0020] Boron trioxide B 2 o 3 0.2~0.4 Zinc oxide ZnO 0.1~0.2
[0021] Potassium oxide K 2 O 0.1~0.14 Sodium oxide Na 2 O 0.01~0.05
[0022] Europium trioxide Eu 2 o 3 0.1~0.2 Titanium dioxide TiO 2 0.1~0.2.
[0023] The optimum weight portion of the coloring agent is 0.81%-0.9% of the high-purity quartz sand.
[0024] Colorant formula one:
[0025] Boron trioxide B 2 o 3 0.4 Zinc oxide ZnO 0.2
[0026] Potassium oxide K 2 O 0.14 Sodium oxide Na 2 O 0.05
[0027] Europium trioxide Eu 2 o 3 0.2 Titanium dioxide TiO 2 0.2.
[0028] ...
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