Lead-free crystal glass and preparation method thereof
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A lead-free crystal and glass frit technology, which is applied in the field of glass frit and its production process, can solve the problems of workers' health, secondary pollution, and precipitation, and achieve high refractive index, high transparency, and high product density.
Inactive Publication Date: 2013-08-14
大连卡莎慕玻璃艺术股份有限公司
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Problems solved by technology
During the production process, it relies on high-temperature flue gas and dust to disperse into the air, causing adverse effects on the health of workers; during use, it will precipitate into food and drinks with the passage of time, causing secondary pollution. Pollution
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Examples
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Embodiment 1
[0024] A kind of lead-free crystal glass frit, preferably comprises each component of following percentage by weight: SiO 2 (Silica powder, quartz sand): 57.000%, Na 2 CO 3 (Soda ash): 24.981%, NaNO 3 (Sodium nitrate): 5.831%, Na 2 B 4 o 7 10H 2 O (borax): 3.347%, ZnO (first-grade zinc): 1.482%, BaCO 3 (Barium carbonate): 4.941%, Li 2 CO 3 (Lithium carbonate): 1.433%, CeO 2 (cerium oxide): 0.985%.
Embodiment 2
[0026] A kind of lead-free crystal glass frit, preferably comprises each component of following percentage by weight: SiO 2 (Silica powder, quartz sand): 59.000%, Na 2 CO 3 (Soda ash): 24.123%, NaNO 3 (Sodium nitrate): 5.482%, Na 2 B 4 o 7 10H 2 O (borax): 3.147%, ZnO (first-grade zinc): 1.450%, BaCO 3 (Barium carbonate): 4.517%, Li 2 CO 3 (Lithium carbonate): 1.397%, CeO 2 (cerium oxide): 0.884%.
Embodiment 3
[0028] A kind of lead-free crystal glass frit, preferably comprises each component of following percentage by weight: SiO 2 (Silica powder, quartz sand): 61.000%, Na 2 CO 3 (soda ash): 23.225%, NaNO 3 (Sodium nitrate): 5.102%, Na 2 B 4 o 7 10H 2 O (borax): 2.918%, ZnO (first-grade zinc): 1.412%, BaCO 3 (Barium carbonate): 4.837%, Li 2 CO 3(Lithium carbonate): 0.981%, CeO 2 (cerium oxide): 0.525%.
[0029] A preparation method of lead-free crystal glass frit, comprising the steps of:
[0030] The first step, ingredients:
[0031] According to the weight percent of each component in Examples 1-3, the mass of the corresponding raw materials was calculated and weighed.
[0032] The second step, raw material drying:
[0033] Use natural drying and electric drying to reduce the moisture in each raw material to below 8%;
[0034] The third step, mixing and stirring:
[0035] The dried raw materials are mixed and stirred by an ultrafine pulverizer and a mixer to form a ...
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Abstract
The invention discloses lead-free crystal glass and a preparation method thereof. The lead-free crystal glass comprises the following components in percentage by weight: 57-61% of SiO2, 23-25% of Na2CO3, 5-6% of NaNO3, 2-3.5% of Na2B4O7.10H2O, 1.4-1.5% of ZnO, 4.3-5% of BaCO3, 0.7-1.5% of Li2CO3 and 0.5-1% of CeO2. According to the lead-free crystal glass, barium carbonate (BaCO3) takes the place of lead oxide, and as barium carbonate is discomposed into barium oxide (BaO) and carbon dioxide under high temperature condition of 1000 DEG C to 1500 DEG C, however, only the refractive index is improved when barium oxide (BaO) is added into glass, the dispersion coefficient is not affected. Therefore, the glass with barium oxide is low in possibility that dispersion and chromatic aberration occur. The lead-free crystal glass has the characteristics of high refraction index (n is greater than or equal to 1.54), high dispersion coefficient (vd is greater than 60) and high transparency degree, and is beneficial for reducing the pattern colors on the back side of the glass more really; a product which is produced by using the glass disclosed by the invention is high in density and has the heavy texture like lead crystal; and in addition, compared with a glass material with lead oxide (PbO), barium carbonate is low in cost and low in toxicity.
Description
technical field [0001] The invention relates to a glass material and a production process thereof, in particular to a lead-free crystal glass material and a preparation method thereof. Background technique [0002] Most of the existing glass production technologies use traditional leaded glass frits, but after long-term production practice at home and abroad, it has been proved that crystal glass with a lead content of 24% has higher transparency and refractive index. [0003] As an important component of traditional crystal glass, lead oxide (PbO) can not only increase the refractive index of the glass, but also increase the dispersion rate. The higher the dispersion rate of glass, the lower the dispersion coefficient (Abbe number), the greater the degree of dispersion and chromatic aberration of light, and the more likely purple fringes and green fringes appear in colored patterns seen through the glass, resulting in color distortion. [0004] At the same time, lead oxide...
Claims
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Application Information
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