A kind of black light-absorbing quartz rod and preparation method thereof

Abstract

The invention relates to a black light-absorption quartz rod and a preparation method thereof. According to the black light-absorption quartz rod, high purity quartz sand is adopted as a base weight part raw material and is matched with 1.6-4.0% by weight of a trace element additive, the SiO2 content of the high purity quartz sand is more than 99.998%, the hydroxyl group content of the high purity quartz sand is less than 5 ppm, the particle size of the high purity quartz sand is 45-145 mesh, and the trace element additive comprises Co2O3, MnO2, K2Cr2O7, BaO, Ca(NO3)2.4H2O, NiO, Nd2O3, Al2O3, and Ce(NO3)3.6H2O. According to the present invention, the novel non-ablative black light-absorption quartz rod controlled and molded by using the quartz rod whole coloring preparation process has advantages of good whole coloring uniformity, good toughness, strong pressure resistance, high-temperature resistance, quenching resistance, rapid-heating resistance, laser radiation resistance and wide light absorption range, wherein the softening point achieves more than 1850 DEG C, the cut-off wavelength can achieve 8-12 [mu]m, the absorption peak can achieve 0.17, and the dual-beam infrared transmittance can achieve zero.

Description

technical field [0001] The invention relates to a preparation technology of a quartz rod, in particular to a black light-absorbing quartz rod and a preparation method thereof. Background technique [0002] Black light-absorbing quartz glass has the characteristics of small thermal expansion coefficient, high resistance to thermal ablation, high strength, high temperature resistance, rapid cooling resistance, excellent thermal performance, and resistance to laser radiation. It is not doped, and the heat resistance of transparent quartz rods is not good. Low softening point, no light absorption, can not work for a long time at 1250 ℃ high temperature. Contents of the invention [0003] The technical problem to be solved by the present invention is to propose a black light-absorbing quartz rod with large size of rod body, good overall coloring uniformity, good toughness and strong pressure resistance. [0004] The technical problem to be solved in the present invention is ac...

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Problems solved by technology

[0002] Black light-absorbing quartz glass has the characteristics of small thermal expansion coefficient, high resistance to thermal ablation, high strength, high temperature resistance, rapid cooling resistance, excellent thermal performance, and resistance to laser radiation. It is not doped, and the heat resistance of transparent quartz rods is not good. Low softening point, no light absorption, can not work for a long time at 1250 ℃ high temperature

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