Soft halation jade glass and preparation method thereof

Abstract

The invention belongs to the technical field of glass preparation, and particularly relates to soft halation jade glass and a preparation method thereof.The soft halation jade glass is prepared from, by weight, main glass components, characteristic glass components and specially controlled glass components; the main glass components comprise 63 to 76 parts of SiO2, 3 to 9 parts of Al2O3, 1 to 8 parts of CaO, 0.5 to 5 parts of MgO, 7 to 14 parts of Na2O and 1 to 5 parts of K2O, wherein the sum of the Na2O and the K2O is 9 to 15 parts; the characteristic glass comprises the following components in parts by weight: 2-7 parts of F <->, 0-3 parts of P2O5, 0-3 parts of B2O3, 0-1 part of BaO, 0-1 part of ZnO and 0-1 part of ZrO; the particularly controlled glass components include Fe2O3 and FeO. The method has the beneficial effects that by controlling the characteristic glass components, the reaction capacity of the glass melt to the refractory material is reduced, and the service life of the kiln is correspondingly prolonged.

Description

Technical Field

[0001] The present invention belongs to the technical field of organic synthesis, and particularly relates to a jade-like glass with soft halo and a preparation method thereof. Background Art

[0002] Glass is an amorphous inorganic material, usually formed by melting various chemical components (such as silicon dioxide, sodium oxide, calcium oxide, etc.) at high temperature and then cooling. Its internal structure has no long-range order, different from crystal materials. Among them, the glass used for furniture manufacturing, such as making tea tables, TV cabinets, cabinet doors, decorative shelves, etc., needs to have both practicality and decoration.

[0003] In the production process of existing furniture glass, the kiln furnace is eroded due to the volatilization of fluorine; at the same time, the existing furniture glass usually precipitates phase-separated droplets of the same size, so that the light entering the glass cannot undergo multiple refractions and scatterings, and the soft light sense is insufficient, affecting the decoration of the glass; and it is easy to produce defects in melting and forming, affecting the surface quality and strength of the product. Summary of the Invention

[0004] The present invention aims at the above problems and provides a jade-like glass with soft halo and a preparation method thereof.

[0005] The present invention relates to a jade-like glass with soft halo. By weight, the composition of the glass consists of a main glass component, a characteristic glass component and a special control glass component; the main glass component includes 63 - 76 parts of SiO2, 3 - 9 parts of Al2O3, 1 - 8 parts of CaO, 0.5 - 5 parts of MgO, 7 - 14 parts of Na2O and 1 - 5 parts of K2O, wherein the total of Na2O and K2O is 9 - 15 parts; the characteristic glass component includes 2 - 7 parts of F - , 0 - 3 parts of P2O5, 0 - 3 parts of B2O3, 0 - 1 part of BaO, 0 - 1 part of ZnO and 0 - 1 part of ZrO; the special control glass component includes Fe2O3 and FeO.

[0006] Preferably, the main glass component includes 67 - 75 parts of SiO2, 4 - 9 parts of Al2O3, 1 - 5 parts of CaO, 0.5 - 5 parts of MgO, 8 - 13 parts of Na2O and 1 - 5 parts of K2O, wherein the total of Na2O and K2O is 9 - 14 parts; the characteristic glass component includes 2 - 5 parts of F - , 0.5 - 3 parts of P2O5, 0 - 2 parts of B2O3, 0 - 1 part of BaO, 0 - 1 part of ZnO and 0 - 1 part of ZrO; the special control glass component includes Fe2O3 and FeO.

[0007] Preferably, the main glass components include 68 - 75 parts of SiO2, 4.5 - 8.5 parts of Al2O3, 1 - 5 parts of CaO, 2 - 5 parts of MgO, 8 - 13 parts of Na2O, and 1 - 5 parts of K2O, where the total of Na2O and K2O is 9 - 14 parts; the characteristic glass components include 2 - 4 parts of F - , 1 - 3 parts of P2O5, 1 - 2 parts of B2O3, 0.5 - 1 part of BaO, 0.5 - 1 part of ZnO, and 0.5 - 1 part of ZrO; the specially controlled glass components include Fe2O3 and FeO.

[0008] Preferably, the raw materials of the glass are composed of a multi-component mineral raw material and an industrial chemical raw material mixed together.

[0009] Preferably, when the glass is white, the total of Fe2O3 and FeO does not exceed 300 ppm.

[0010] Preferably, when the glass is white, the total of Fe2O3 and FeO does not exceed 200 ppm.

[0011] Preferably, the multi-component mineral raw material is at least one of spodumene and albite; in the spodumene, Al2O3 ≥ 13%, K2O ≥ 2.5%, Fe2O3 + FeO ≤ 400 ppm; in the albite, Al2O3 ≥ 18%, Na2O + K2O ≥ 11.5%, Fe2O3 + FeO ≤ 500 ppm.

[0012] Preferably, when the glass is colored, there is no requirement for the amount of the specially controlled glass components, and glass coloring elements are added to adjust the color of the glass. The multi-component mineral raw material is at least one of granite and basalt.

[0013] Preferably, the density of the glass is 2.53 - 2.56 g / cm 3 , the compressive strength is 320 - 460 MPa, the flexural strength is 85 - 110 MPa, the Mohs hardness is 5 - 6, and the thermal expansion coefficient is 72.0 - 82.5×10 -7 ℃ -1 , the light transmittance per unit thickness is 6% - 11%, and the glossiness is 90% - 96%.

[0014] The present invention also relates to a preparation method of a soft halo jade-like glass for preparing the soft halo jade-like glass, including the following steps: Prepare raw materials according to the component ratio and mix them evenly. Then, load the mixture into a crucible that has been preheated to 1500 °C in a heating furnace. Next, place the crucible into the heating furnace, quickly raise the temperature to 1550 °C, and hold for 2.5 hours. Finally, pour the glass melt into a mold to make a plate-shaped glass sheet, put it into an annealing furnace, hold at a temperature of 660 °C for 0.5 hours, then raise the temperature to 780 °C and hold for 0.5 hours, and then slowly anneal to obtain the glass.

[0015] In the present invention, SiO2 and A12O3 act as network-forming oxides to form a glass network and simultaneously participate in the formation of the main phase, improving the chemical stability of the glass-ceramics; A12O3 adjusts the structure of the glass in the form of [AlO4] in the glass. In addition to improving the thermal stability, chemical stability, and mechanical strength of the glass, it can also reduce the erosion of refractories by fluorides and is beneficial to inhibiting the volatilization of fluorine; the content of A12O3 is controlled at 6-9 parts, which can fully control the fluorine volatilization without causing the melt viscosity to rise and resulting in melting difficulties.

[0016] In the present invention, CaO, MgO, Na2O, and K2O act as network-modifying oxides in the glass. They can achieve a fluxing effect and also play a role in breaking bonds, which is beneficial to the precipitation of crystals; the mixed-alkali effect of Na2O and K2O greatly changes the properties of the glass and can also improve the gloss of the opal glass; the total content of Na2O and K2O is controlled at 11-15 parts, which will not cause phosphorus volatilization and have an adverse effect on the final opalescence of the glass, and on the premise of ensuring the excellent physical properties of the glass, it can improve the high-temperature viscosity of the glass to facilitate the forming of the glass.

[0017] In the present invention, P2O5 acts as an opacifier and plays a key role in the phase separation of the opal glass, and can also provide conditions for internal crystallization; the content of P2O5 is controlled at 0.5-3 parts, the crystallization degree of the glass is appropriate, and the gloss is high.

[0018] The glass in the present invention contains 2-4 parts of F - . The phosphorus-containing glass has a higher crystallization activation energy and effective frequency factor than the fluorine-containing glass, and has a lower crystal growth index. The crystallization kinetic parameters of both glasses increase, thus improving the crystallization process of the glass; the crystallization temperature of the phosphorus-containing glass is higher and the grains are spherical with smaller sizes and a narrower distribution; the crystallization temperature of the fluorine-phosphorus-containing glass is lower, and the required crystal phase can be obtained at a lower temperature without a crystal phase transformation process, and the grains are granular with larger sizes and a wider distribution; introducing phosphides can significantly increase the crystallization temperature and activation energy of the glass but inhibit the crystal growth; fluorides reduce the crystallization temperature and activation energy but accelerate the crystal growth rate; in the present invention, the co-introduction of fluorine and phosphorus compounds can adjust the crystallization kinetic parameters of the glass, improve the crystallization ability of the glass, refine the grains, and obtain the required crystal phase and microstructure.

[0019] In the present invention, B2O3 acts as a network former, which can regulate phase separation, hinder the aggregation of the phosphorus-rich network, suppress the droplet size, and thus achieve the effect of adjusting the opalescence. Moreover, it can improve the physical properties of the glass. Its coordination states in the glass network are mainly divided into two types: [BO3] and [BO4]. When the glass melt is at the melting temperature, B2O3 can reduce the glass viscosity to a certain extent, thereby achieving the effect of promoting melting. When the content of B2O3 is controlled within 0 - 2 parts, it will not affect the opalescence of the glass and can ensure the gloss of the glass.

[0020] Compared with the prior art, the advantages and positive effects of the present invention are as follows: (1) By controlling the proportion of the special glass components, the soft-glow jade-like glass can precipitate phase-separated droplets of various sizes, enabling the light incident on the glass to undergo multiple refractions and scatterings, showing a very comfortable soft-glow jade texture. (2) By selecting appropriate multi-component mineral raw materials, the soft-glow jade-like glass can promote the primary reaction process of glass formation, while reducing the amount of overflow gas, playing a positive role in energy conservation and consumption reduction and reducing the volatilization of effective components. (3) By controlling the special glass components, the soft-glow jade-like glass reduces the reaction ability of the glass melt to refractory materials, correspondingly extending the service life of the kiln. (4) By adding glass coloring elements for mixed melting, the soft-glow jade-like glass can produce glass products of different colors. Specific Embodiments

[0021] In order to more clearly understand the above objects, features, and advantages of the present invention, the present invention will be further described below in conjunction with embodiments.

[0022] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the limitations of the specific embodiments disclosed in the following specification.

[0023] Example 1 A soft-glow jade-like glass, by weight, the glass composition consists of a main glass component, a special glass component, and a specially controlled glass component; the main glass component includes 65.5 parts of SiO2, 4.30 parts of Al2O3, 7.0 parts of CaO, 1.0 part of MgO, 12.0 parts of Na2O, and 1.00 part of K2O; the special glass component includes 4.00 parts of F -, 0.50 parts of P2O5, 2.00 parts of B2O3, 1.00 part of BaO, 1.00 part of ZnO and 0.50 part of ZrO; The special control glass composition includes Fe2O3 and FeO.

[0024] The raw materials of the glass are jointly mixed by multi-component mineral raw materials and industrial chemical raw materials.

[0025] The glass is white, and the total of Fe2O3 and FeO is 200 ppm parts.

[0026] The multi-component mineral raw material is spodumene; in spodumene, Al2O3≥13%, K2O≥2.5%, Fe2O3+FeO≤400 ppm.

[0027] A preparation method of a soft halo jade-like glass for preparing the above-mentioned soft halo jade-like glass, comprising the following steps: Prepare the raw materials according to the component ratio and mix them evenly, then put the mixture into a crucible preheated to 1500 °C in a heating furnace, then place the crucible into the heating furnace, quickly raise the temperature to 1550 °C, keep warm for 2.5 hours, and finally pour the glass melt into a mold to make a plate-shaped glass plate, put it into an annealing furnace, keep warm at a temperature of 660 °C for 0.5 hours, then raise the temperature to 780 °C and keep warm for 0.5 hours, and then slowly anneal to obtain the glass.

[0028] Example 2 The difference between this example and Example 1 is: A soft halo jade-like glass, calculated by weight, the composition of the glass consists of a main glass component, a characteristic glass component and a special control glass component; the main glass component includes 69.7 parts of SiO2, 6.50 parts of Al2O3, 3.5 parts of CaO, 1.0 part of MgO, 10.5 parts of Na2O and 1.50 parts of K2O; the characteristic glass component includes 2.00 parts of F - , 1.50 parts of P2O5, 1.00 part of B2O3, 0.50 part of BaO, 0.50 part of ZnO and 0.80 part of ZrO; the special control glass component includes Fe2O3 and FeO.

[0029] The glass is red, and the glass coloring element Cu is added to adjust the color of the glass. The multi-component mineral raw materials are granite and basalt.

[0030] Example 3 The difference between this example and Example 1 is: A kind of jade-like glass with soft halo. By weight, the composition of the glass consists of a main glass component, a characteristic glass component, and a specially controlled glass component; the main glass component includes 71.0 parts of SiO2, 4.50 parts of Al2O3, 2.0 parts of CaO, 2.5 parts of MgO, 8.5 parts of Na2O, and 1.50 parts of K2O; the said characteristic glass component includes 2.00 parts of F - , 2.80 parts of P2O5, 1.50 parts of B2O3, 0.80 parts of BaO, 0.80 parts of ZnO, and 1.00 parts of ZrO; the specially controlled glass component includes Fe2O3 and FeO.

[0031] The glass is beige, and glass coloring elements are added to adjust the color of the glass. The multi-component mineral raw material is granite.

[0032] Example 4 The difference between this example and Example 1 is that: A kind of jade-like glass with soft halo. By weight, the composition of the glass consists of a main glass component, a characteristic glass component, and a specially controlled glass component; the main glass component includes 70.5 parts of SiO2, 6.50 parts of Al2O3, 3.0 parts of CaO, 1.0 parts of MgO, 8.5 parts of Na2O, and 1.50 parts of K2O; the said characteristic glass component includes 2.50 parts of F - , 2.50 parts of P2O5, 1.50 parts of B2O3, 0.50 parts of BaO, 0.80 parts of ZnO, and 1.00 parts of ZrO; the specially controlled glass component includes Fe2O3 and FeO.

[0033] The glass is white, and the total of Fe2O3 and FeO is 200 ppm.

[0034] The multi-component mineral raw material is albite; in albite, Al2O3 ≥ 18%, Na2O + K2O ≥ 11.5%, Fe2O3 + FeO ≤ 500 ppm.

[0035] Example 5 The difference between this example and Example 1 is that: A kind of jade-like glass with soft halo. By weight, the composition of the glass consists of a main glass component, a characteristic glass component, and a specially controlled glass component; the main glass component includes 68.0 parts of SiO2, 6.00 parts of Al2O3, 3.0 parts of CaO, 2.5 parts of MgO, 12.0 parts of Na2O, and 1.00 parts of K2O; the said characteristic glass component includes 2.00 parts of F -, 2.00 parts of P2O5, 0.50 parts of B2O3, 0.50 parts of BaO, 0.50 parts of ZnO and 0.50 parts of ZrO; The special control glass composition includes Fe2O3 and FeO.

[0036] The glass is brown, and the glass coloring element Mn is added to adjust the color of the glass. The multi-component mineral raw material is basalt.

[0037] Test Example 1 The component ratios of the glasses prepared in Examples 1-5 are shown in Table 1, and various performance tests are carried out on the glasses prepared in Examples 1-5. The results are shown in Table 2.

[0038] Table 1 Component ratios of the glass Table 2 Various properties of the glass It can be seen from Table 2 that the light transmittance of the glasses provided in Examples 1-5 of the present invention is above 6%, the glossiness is above 90%, the compressive strength is above 320 MPa, the flexural strength is above 85 MPa, the Mohs hardness is above 5, and the thermal expansion coefficient is 72.0×10 -7 °C -1 above. While having high glossiness, it has excellent mechanical strength and thermal stability.

[0039] The above are only the preferred embodiments of the present invention, and are not limitations on the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification and equivalent change made to the above embodiments based on the technical essence of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. A soft halo jade glass, characterized in that: The glass comprises a main glass component, a characteristic glass component and a special controlled glass component by weight; the main glass component comprises 63 to 76 parts of SiO2, 3 to 9 parts of Al2O3, 1 to 8 parts of CaO, 0.5 to 5 parts of MgO, 7 to 14 parts of Na2O and 1 to 5 parts of K2O, wherein the sum of Na2O and K2O is 9 to 15 parts; the characteristic glass component comprises 2 to 7 parts of F - , 0-3 parts of P2O5, 0-3 parts of B2O3, 0-1 parts of BaO, 0-1 parts of ZnO and 0-1 parts of ZrO; the specially controlled glass components include Fe2O3 and FeO.

2. The soft halo jade glass according to claim 1, characterized in that: The main glass components include 67-75 parts of SiO2, 4-9 parts of Al2O3, 1-5 parts of CaO, 0.5-5 parts of MgO, 8-13 parts of Na2O and 1-5 parts of K2O, wherein the sum of Na2O and K2O is 9-14 parts; the characteristic glass components include 2-5 parts of F - , 0.5-3 parts of P2O5, 0-2 parts of B2O3, 0-1 parts of BaO, 0-1 parts of ZnO and 0-1 parts of ZrO; the specially controlled glass components include Fe2O3 and FeO.

3. The soft halo jade glass according to claim 2, characterized in that: The main glass components include 68-75 parts of SiO2, 4.5-8.5 parts of Al2O3, 1-5 parts of CaO, 2-5 parts of MgO, 8-13 parts of Na2O and 1-5 parts of K2O, wherein the sum of Na2O and K2O is 9-14 parts; the characteristic glass components include 2-4 parts of F - , 1 to 3 parts of P2O5, 1 to 2 parts of B2O3, 0.5 to 1 parts of BaO, 0.5 to 1 parts of ZnO and 0.5 to 1 parts of ZrO; the specially controlled glass components include Fe2O3 and FeO.

4. The soft halo jade glass according to claim 3, characterized in that: The raw materials of the glass are mixed with multi-component mineral raw materials and industrial chemical raw materials.

5. The soft halo jade glass according to claim 4, characterized in that: When the glass is white, the total amount of Fe2O3 and FeO does not exceed 300 ppm.

6. The soft halo jade glass according to claim 5, characterized in that: When the glass is white, the total amount of Fe2O3 and FeO does not exceed 200 ppm.

7. The soft halo jade glass according to claim 4 or 5, characterized in that: The multi-component mineral raw material is at least one of lithium feldspar and albite; in the lithium feldspar, Al2O3≥13%, K2O≥2.5%, and Fe2O3+FeO≤400ppm; in the albite, Al2O3≥18%, Na2O+K2O≥11.5%, and Fe2O3+FeO≤500ppm.

8. The soft halo jade glass according to claim 4, characterized in that: When the glass is colored, there is no requirement for the proportion of the specially controlled glass components, and glass coloring elements are added to adjust the color of the glass. The multi-component mineral raw material is at least one of granite and basalt.

9. The soft halo jade glass according to claim 1, characterized in that: The density of the glass is 2.53-2.56 g / cm 3 , compressive strength is 320-460MPa, flexural strength is 85-110MPa, Mohs hardness is 5-6, thermal expansion coefficient is 72.0-82.5×10 -7 ℃ -1 The light transmittance per unit thickness is 6% to 11%, and the glossiness is 90% to 96%.

10. A method for preparing soft halo jade glass, characterized in that: The preparation of the jade-like glass with soft halo as claimed in any one of claims 1 to 9 comprises the following steps: Prepare the raw materials according to the composition ratio and mix them evenly, then put the mixture into a crucible that has been preheated to 1500℃ in a heating furnace, then put the crucible into the heating furnace, quickly heat it to 1550℃, and keep it warm for 2.5 hours. Finally, pour the molten glass into a mold to make a plate-mounted glass plate, put it into an annealing furnace, keep it warm at 660℃ for 0.5 hour, then heat it to 780℃ and keep it warm for 0.5 hour, then slowly anneal it to make glass.

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