Blue-green glass composition capable of strongly absorbing infrared rays
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A glass composition and infrared technology, applied in the field of optical glass preparation, can solve problems affecting the transmission of ultraviolet rays
Inactive Publication Date: 2016-09-07
江苏通天光学科技有限公司
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The above two patents absorb infrared rays by adding iron, because FeO is a good infrared absorber and a necessary component of heat-absorbing glass, but the above two patents also add Cr as a raw material that strongly absorbs ultraviolet rays. 2 o 3 , affecting the transmission of ultraviolet light
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Embodiment 1
[0014] The blue-green glass composition with strong infrared absorption is formulated according to the following ratio: SiO 2 74.42wt%, CaO8.2%, Na 2 O 12.6wt%, MgO 2.1wt%, Al 2 o 3 1.0wt%, total iron (Fe 2 o 3 ) 0.07wt%, CuO 0.1wt%, NiO 1.5wt%, CoO 15ppm, carbon powder 0.15wt%. The glass composition has a visible light transmittance of 89.2%, a total infrared transmittance of 17.9%, and a total solar transmittance of 39.7% at a thickness of 5 mm. Its dominant wavelength is 497.68nm, and its color purity is 4.86%.
Embodiment 2
[0016] The blue-green glass composition with strong infrared absorption is formulated according to the following ratio: SiO 2 73.72wt%, CaO8.2%, Na 2 O 12.6wt%, MgO 2.1wt%, Al 2 o 3 1.0wt%, total iron (Fe 2 o 3 ) 0.07wt%, CuO 0.3wt%, NiO 2wt%, CoO 20ppm, carbon powder 0.15wt%. The glass composition has a visible light transmittance of 88.9%, a total infrared transmittance of 17.1%, and a total solar transmittance of 39.1% at a thickness of 5 mm. Its dominant wavelength is 503.64nm, and its color purity is 4.26%.
Embodiment 3
[0018] The blue-green glass composition with strong infrared absorption is formulated according to the following ratio: SiO 2 74.21%, CaO8.2%, Na 2 O 12.6wt%, MgO 2.1wt%, Al 2 o 3 1.0wt%, total iron (Fe 2 o 3 ) 0.08wt%, CuO 0.3wt%, NiO 1.5wt%, CoO 25ppm, carbon powder 0.15wt%. The glass composition has a visible light transmittance of 87.5%, a total infrared transmittance of 16.9%, and a total solar transmittance of 38.5% at a thickness of 5 mm. Its dominant wavelength is 505.26nm, and its color purity is 3.56%.
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Abstract
The invention relates to a blue-green glass composition capable of strongly absorbing infrared rays. The glass composition comprises a main part of an ordinary silicate glass composition, and a colorant part which comprises 0.03 to 0.3 wt% of total iron (Fe2O3), 0.05 to 0.5 wt% of CuO, 1 to 3 wt% of NiO and 0 to 30 ppm of CoO. The glass with a thickness of 5 mm is prepared by melting under a reducing atmosphere, annealing, molding, polishing and grinding. The glass provided by the invention has a visible light transmittance more than 88%, a total infrared transmittance less than 18%, a total solar transmittance less than 40%, a dominant wavelength in a range of 496 to 507 nm, and a color purity less than 5%.
Description
technical field [0001] The invention relates to a blue-green glass composition with strong infrared absorption, belonging to the field of optical glass preparation. Background technique [0002] Sunlight is mainly electromagnetic waves with a wavelength in the range of 300-2500nm, and those with a wavelength between 200-380nm are called ultraviolet rays. The proportion of ultraviolet rays in the energy of solar radiation is small, about 5%. Under normal circumstances, ultraviolet rays are harmful to the human body, but under certain circumstances, they have beneficial effects on the development and life of humans, animals, and plants, and become the lifeline of organisms. For example, in hospitals, nursing homes, kindergartens, nurseries, schools, greenhouses for flowers and crops, as well as artificial incubators and greenhouse ceilings, glass windows need to pass through 280-320nm ultraviolet glass, which is beneficial to the growth and development of humans, animals and p...
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Application Information
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