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A kind of acid and alkali resistant fluorine-free opalescent glass and its preparation method and application

A technology for opal glass and glass, applied in the field of opal glass and its preparation, can solve the problems of poor acid and alkali resistance of the opal glass, and achieve the effects of good acid and alkali resistance, high whiteness, and production cost saving.

Active Publication Date: 2021-12-07
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is to provide an acid and alkali resistant fluorine-free opal glass and its preparation method and application, so as to overcome the defect of poor acid and alkali resistance of opal glass in the prior art

Method used

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  • A kind of acid and alkali resistant fluorine-free opalescent glass and its preparation method and application
  • A kind of acid and alkali resistant fluorine-free opalescent glass and its preparation method and application
  • A kind of acid and alkali resistant fluorine-free opalescent glass and its preparation method and application

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Experimental program
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Effect test

Embodiment 1

[0035] Raw material formula is as shown in table 1, wherein SiO 2 Pickled Quartz Introduced, Al 2 o 3 , ZnO are industrial pure raw materials, Na 2 O with industrial pure Na 2 CO 3 Introduce, B 2 o 3 With industrial pure H 3 BO 3 Introduced, P 2 o 5 Introduced with industrial pure calcium phosphate, CaO introduced with industrial pure calcite:

[0036] Table 1

[0037]

[0038] Weigh the reagents according to the raw material formula in Table 1 and ball mill for 2 hours to mix the raw materials evenly, then place the raw materials in a quartz crucible and heat up to 1550 °C for high temperature melting and keep it for 2 hours, then pour the glass liquid into it and preheat it to 510 °C Molded in a mold at ~520°C, and annealed in a 580°C annealing furnace for 4 hours to eliminate internal stress, and finally cooled to room temperature to obtain an opalescent glass block.

Embodiment 2

[0040] Raw material formula is as shown in table 2:

[0041] Table 2

[0042]

[0043] Weigh the reagents according to the raw material formula in Table 2 and ball mill for 2 hours to mix the raw materials evenly, then place the raw materials in a quartz crucible and heat up to 1530°C for high temperature melting and heat preservation for 2 hours, then pour the glass liquid into it and preheat it to 480°C ℃ mold, and annealed in a 560 ℃ annealing furnace for 3 hours to eliminate internal stress, and finally cooled to room temperature to obtain opal glass blocks.

[0044] The photo taken directly of the sample of the obtained opalescent glass is as follows: figure 2 As shown, the product directly tested its whiteness and found that its whiteness reached 89. Crush the sample and cut it into small pieces and send it to the scanning electron fiber microscope to check the cross-section fiber morphology and obtain the SEM image (such as figure 1 Shown); The sample is directly...

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Abstract

The invention relates to an acid and alkali-resistant fluorine-free opalescent glass, a preparation method and application thereof. The glass component includes according to the mass fraction: SiO 2 68~74%, Al 2 o 3 2~6%, B 2 o 3 4-8%, ZnO 0-4%, Li 2 O 0~2%, Na 2 O+K 2 O 5~11%, CaO 4~8%, BaO 1‑3%, P 2 o 5 2~5% and ZrO 2 0.5‑2.5%. The preparation method includes: ball milling and mixing each raw material, melting, then forming the obtained glass liquid, annealing and cooling. The milky white glass improves the chemical resistance stability of the milky white glass by adding zirconia, and at the same time uses alkaline earth metals instead of alkali metals to stabilize the phosphate volatilization to improve the stability of the milky cloud, and further benefit the improvement of the chemical stability, and can achieve uniform phase separation , Realize the stability of opacity, so as to realize the development of acid and alkali resistant opal glass.

Description

technical field [0001] The invention belongs to the field of opalescent glass and its preparation method and application, in particular to an acid and alkali-resistant fluorine-free opalescent glass and its preparation method and application. Background technique [0002] Opalescent glass is a white opalescent glass. Opal glass refers to the glass that contains a large number of highly dispersed particles. Due to the difference between its refractive index and the main glass, light will scatter and appear opacified after being irradiated. Add opacifiers to the ingredients, such as fluoride, phosphate, antimonate and high refractive index oxides, which dissolve in the glass melt when it is melted at high temperature, and are separated from the melt due to low solubility when the temperature is lowered. , exists in solid glass in the form of highly dispersed particles. Dispersed particles can be precipitated crystals (CaF 2 ), impenetrable polycrystalline substances (such a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C3/097C03C4/00C03C4/20
CPCC03C3/097C03C4/005C03C4/20
Inventor 汪庆卫范朝振罗理达赵凯志张起畅汪晨
Owner DONGHUA UNIV
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