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Thermochromic aluminum silicate glass and preparation method thereof

An aluminosilicate glass and thermochromic technology, which is applied in the field of special glass manufacturing and color-changing glass production to achieve the effects of high elastic modulus, fast discoloration response time and simple production process

Inactive Publication Date: 2018-09-21
(CNBM) BENGBU DESIGN & RES INST FOR GLASS IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

to VO 2 There are also many studies on the preparation methods of thin films, mainly including evaporation method, sputtering method, sol-gel method, atmospheric pressure chemical vapor deposition method, etc., but the research on directly using vanadium dioxide powder as raw material for the preparation of color-changing glass is currently a bit less

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] (1) SiO by weight percentage 2 57%, Al 2 o 3 15%, B 2 o 3 4%, K 2 O 7.5%, MgO 2%, CaO 0.5%, Na 2 O14%, VO 2 0.8% for batching;

[0017] (2) Put the prepared above-mentioned raw materials into a ball mill for mixing and grinding, and the ball milling time is 60 min to obtain a uniform mixture;

[0018] (3) Melt the ground mixture in a furnace, raise the temperature to 1000°C at a rate of 10°C / min, then raise the temperature to 1300°C at a rate of 5°C / min, control the melting temperature to 1300°C, and keep it warm for 5 hours. Obtain clarified and homogenized molten glass;

[0019] (4) Quickly pour the molten glass into a stainless steel plate mold to form it, and select the corresponding size abrasive tool according to the amount of batching materials;

[0020] (5) Immediately put the formed glass sample into an annealing furnace, keep it warm at 650°C for 3 hours, and cool the glass sample to room temperature with the furnace to obtain a thermochromic alum...

Embodiment 2

[0022] (1) SiO by weight percentage 2 60%, Al 2 o 3 24%, B 2 o 3 1%, K 2 O 4%, MgO 0.5%, CaO 1%, Na 2 O9.5%,, VO 2 2% for batching;

[0023] (2) Put the prepared above-mentioned raw materials into a ball mill for mixing and grinding, and the ball milling time is 80 min to obtain a uniform mixture;

[0024] (3) Melt the ground mixture in a furnace, raise the temperature to 1000°C at a rate of 8°C / min, then raise the temperature to 1500°C at a rate of 4°C / min, control the melting temperature to 1500°C, and keep it warm for 2 hours. Obtain clarified and homogenized molten glass;

[0025] (4) Quickly pour the molten glass into a stainless steel plate mold to form it, and select the corresponding size abrasive tool according to the amount of batching materials;

[0026] (5) Immediately put the formed glass sample into an annealing furnace, keep it warm at 650°C for 4 hours, and cool the glass sample to room temperature with the furnace to obtain a thermochromic alumino...

Embodiment 3

[0028] (1) SiO by weight percentage 2 66%, Al 2 o 3 20%, B 2 o 3 2%, SiO 2 66%, K 2 O 2%, MgO 4%, CaO 1%, Na 2 O 5%, VO 2 5% for batching;

[0029] (2) Put the prepared above-mentioned raw materials into a ball mill for mixing and grinding, and the ball milling time is 100 min to obtain a uniform mixture;

[0030] (3) Melt the ground mixture in a furnace, raise the temperature to 1000°C at a rate of 8°C / min, then raise the temperature to 1400°C at a rate of 4°C / min, control the melting temperature to 1400°C, and keep it warm for 3 hours. Obtain clarified and homogenized molten glass;

[0031] (4) Quickly pour the molten glass into a stainless steel plate mold to form it, and select the corresponding size abrasive tool according to the amount of batching materials;

[0032] (5) Immediately put the formed glass sample into an annealing furnace, keep it warm at 650°C for 5 hours, and cool the glass sample to room temperature with the furnace to obtain a thermochromi...

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Abstract

The invention relates to thermochromic aluminum silicate glass and a preparation method thereof. The thermochromic aluminum silicate glass is characterized by being prepared from, by weight, 55%-72% of SiO2, 15%-24% of Al2O3, 0%-7% of B2O3, 0-8% of K2O, 0-4% of MgO, 0-1% of CaO, 2-15% of Na2O and 0.8-8% of VO2. The preparation method includes: (1) material preparation; (2) mixing and ball millingfor 0.25-0.5h to well mix materials; (3) melting, to be more specific, melting in a melting furnace, heating to 1000 DEG C at a speed of 5-10DEG C / min, then heating to a melting temperature of 1300-1600 DEG C at a speed of 3-5DEG C / min, and keeping the temperature for 2-5h to obtain glass liquid; (4) forming, to be more specific, quickly pouring the glass liquid into a stainless steel plate mouldto realize forming; (5) annealing, to be more specific, keeping the temperature at 650 DEG C for 3-6h, and subjecting a glass sample to furnace cooling to the room temperature. The thermochromic aluminum silicate glass has advantages that the thermochromic aluminum silicate glass is converted from a monoclinic rutile phase to a square rutile phase at 68 DEG C, intelligent indoor temperature regulation is realized, and excellent color developing effects and quickness in color changing response are realized; due to a large quantity of alkali metals and aluminum element in the aluminum silicate glass, high elastic modulus is achieved; by direct introduction of vanadium dioxide powder, simplicity in manufacturing process and low cost are realized.

Description

technical field [0001] The invention belongs to the technical field of special glass manufacturing, relates to the field of color-changing glass production, in particular to a thermochromic aluminosilicate glass and a preparation method thereof. Background technique [0002] Color-changing glass refers to the glass that changes color under certain conditions such as light, low-voltage current or surface pressure, and changes with the condition. When the applied condition disappears, it reversibly and automatically returns to the original state, also called dimming glass. Or transmittance adjustable glass. This kind of glass changes its own transmission characteristics with the environment, which can realize effective control of solar radiation energy, so as to meet human needs and achieve the purpose of energy saving. Glass can be divided into four categories according to the principle of color change, especially thermochromic glass, electrochromic glass, photochromic glass...

Claims

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Application Information

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IPC IPC(8): C03C4/02C03C3/091
CPCC03C3/091C03C4/02
Inventor 彭寿王萍萍马立云石丽芬倪嘉韩娜崔介东操芳芳高强王巍巍赵凤阳仲召进曹欣单传丽
Owner (CNBM) BENGBU DESIGN & RES INST FOR GLASS IND CO LTD
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