• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
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    • 专利摘要:
    Disclosed are a heat-insulating glass glaze and a preparation method therefor, wherein the method for preparing the heat-insulating glass glaze involves: uniformly mixing a low-melting point glass powder, a heat radiation blocking agent, sodium silicate and a heat conduction blocking agent to obtain the heat-msulating glass glaze. The method for preparing the low-melting point glass powder comprises the steps of: uniformly mixing raw materials and melting the raw materials at 500-700°C for 10-50 minutes to obtain a molten glass, quenching the molten glass to obtain bulk glass, and crushing the bulk glass and putting the resultant into a ball mill to obtain the low-melting point glass powder. By adjusting the composition of the low-melting point glass powder by introducing a small amount of LizO, ZrOz, NazO and NaF into the low-melting point glass powder, the present invention can not only reduce the glass transition temperature of the low-melting point glass powder to less than or equal to 300°C, but can also increase the visible light transmittance of the transparent heat-insulating coating to greater than or equal to 90%.
    公开号:NL2024480A
    申请号:NL2024480
    申请日:2019-12-17
    公开日:2020-01-09
    发明作者:Liu Ying；Chang Chunrui；Wei Huan
    申请人:Univ North China Science & Technology；
    IPC主号:
    专利说明:

    Description
    Heat-insulating glass glaze and preparation method therefor
    Technical Field
    The present invention belongs to the technical field of the preparation of building energy-saving materials, and particularly relates to a heat-insulating glass glaze and a preparation method therefor.
    Background Art
    With the increasing emphasis on green, environmental protection, and energy saving, higher and higher requirements have been put forward for the transparency and heat insulation performance of glass. Although ordinary glass has a good transparency, the heat preservation and insulation effect thereof is not good, causing a great energy loss and energy source consumption. There are three ways of heat transfer for glass, i.e. radiation, conduction and convection, wherein radiation heat transfer accounts for 60%, and conduction heat transfer accounts for 38%. Therefore, in order to improve the heat preservation and insulation performance of glass, it is necessary to start from both radiation heat transfer and conduction heat transfer. Low-E glass and hollow glass are two main technologies of building energy-saving glass, wherein the Low-E glass reduces the radiation heat transfer of glass, while the hollow glass only reduces the conduction heat transfer of glass. Only the combination of the Low-E glass and hollow glass technologies together can reduce both radiation heat transfer and conduction heat transfer. However, an Ag coating of existing off-line Low-E glass oxidizes upon exposure to air, and cannot be used as a single piece, and on-line Low-E glass has a relatively poor heat preservation and insulation performance. Therefore, there is an urgent need to develop a novel heat preservation and insulation glass product.
    A transparent heat-insulating glass glaze (application number 201611255697.2) was previously developed by the applicant, which discloses a transparent heat-insulating glass glaze having heat-insulatmg and thermal conductivity coefficient reducing functions;
    however, glass powder involved therefor has a higher glass transition temperature.
    Summary of the Invention
    In view of the shortcomings of the prior art, an object of the present invention is to provide a method for preparing a heat-insulating glass glaze, and another object is to provide a heat-insulatmg glass glaze obtained by the above-mentioned preparation method, wherein low-melting point glass powder used in the heat-insulating glass glaze has a relatively low glass transition temperature.
    Another object of the present invention is to provide a method for preparing a transparent heat-insulating coating using the heat-insulating glass glaze.
    The objects of the present invention are achieved by means of the following technical solutions.
    There is provided a method for preparing a heat-insulating glass glaze, wherein a low-melting point glass powder, a heat radiation blocking agent, sodium silicate and a heat conduction blocking agent are uniformly mixed to obtain the heat-insulating glass glaze, wherein in parts by mass, the ratio of the low-melting point glass powder to the heat conduction blocking agent to the sodium silicate to the heat radiation blocking agent is (60-80): (5-15): (1-3): (5-15), the heat radiation blocking agent is ITO (indium-doped tin oxide) nanopowder, ATO (antimony-doped tin oxide) nanopowder, FTO (fluorinedoped tin oxide) nanopowder or ZTO (zine-doped tin oxide) nanopowder, and the heat conduction blocking agent is a nano-silica aerogel, and a method for preparing the lowmelting point glass powder comprises the following steps:
    1) uniformly mixing raw materials and melting the raw materials at 500-700°C for 10-50 minutes to obtain a molten glass, wherein the raw materials comprise: 25-40 parts by mass of SnCh, 10-30 parts by mass of P2O5, 10-20 parts by mass of B2O3, 0.5-1.5 parts by mass of L12O, 1-3 parts by mass of ZrCh, 2-5 parts by mass of Na2O, 1-2 parts by mass of NaF, and 5-25 parts by mass of B12O3, V2O5, S1O2, TeCh or AI2O3;
    2) quenching the molten glass, wherein the molten glass is poured into a copper mold and naturally cooled to room temperature of 20-25°C to obtain bulk glass;
    3) crushing the bulk glass and putting the resultant into a ball mill to obtain the lowmelting point glass powder.
    In the above-mentioned technical solution, the particle diameter of the heat conduction blocking agent is less than or equal to 50 nm.
    In the above-mentioned technical solution, the porosity of the heat conduction blocking agent is greater than 90%.
    In the above-mentioned technical solution, the particle diameter of the low-melting point glass powder is less than or equal to 10 pm.
    There is provided a heat-insulating glass glaze obtained by the above-mentioned preparation method.
    There is provided a method for preparing a transparent heat-insulating coating using the above-mentioned heat-insulating glass glaze, the method comprising the following steps:
    a) uniformly mixing the above-mentioned heat-insulating glass glaze with ethanol to obtain a slurry, spraying the slurry to a surface of a substrate to form a coating, and drying the coating at 40-80°C for 30-60 min, wherein in parts by mass, the ratio of the heat-insulating glass glaze to the ethanol is 1 : (2-5); and in a), the pressure of compressed air for spraying is 1 -7 MPa; and
    b) sintering the dried coating at 200-300°C for 50-120 mm to obtain the transparent heat-insulating coating on the surface of the substrate.
    In b), the thickness of the transparent heat-insulating coating obtained on the surface of the substrate is 100-300 pm.
    There is provided the use of the above-mentioned heat-insulating glass glaze in improving the visible light transmittance of the transparent heat-insulating coating.
    In the above-mentioned technical solution, the visible light transmittance of the transparent heat-insulating coating is greater than or equal to 90%.
    Compared with the prior art, the beneficial effects of the present invention are as follows:
    1. by adjusting the composition of the low-melting point glass powder by introducing a small amount of L12O, ZrCh, Na O and NaF into the low-melting point glass powder, the present invention can not only reduce the glass transition temperature of the low-melting point glass powder to less than or equal to 300°C, but can also increase the visible light transmittance of the transparent heat-msulatmg coating to greater than or equal to 90%.
    2. Where the UV aging and wear resistance of the transparent heat-insulating coating stay unchanged, the thermal conductivity coefficient is reduced and the barrier coefficient to infrared light is improved.
    Detailed Description of Embodiments
    In specific embodiments of the present invention, ATO nanopowder purchased from Shanghai Huzheng Nano Science & Technology Co., Ltd., and a nano-silica aerogel as a powder with a particle diameter of 50 nm and a porosity of 92% purchased from Chengdu Airuijie Keji Youxian Gongsi are involved. Sodium silicate was purchased from Dalian IDERY Biotechnology Co., Ltd.
    The technical solutions of the present invention are further illustrated below in conjunction with specific examples and drawings.
    Example 1
    There is provided a method for preparing a heat-insulating glass glaze, wherein a low-melting point glass powder, a heat radiation blocking agent, sodium silicate and a heat conduction blocking agent are uniformly mixed to obtain the heat-insulating glass glaze, wherein in parts by mass, the ratio of the low-melting point glass powder to the heat conduction blocking agent to the sodium silicate to the heat radiation blocking agent is 70 : 5 : 1 : 5, the heat radiation blocking agent is ATO (antimony-doped tin oxide) nanopowder, and the heat conduction blocking agent is a nano-silica aerogel.
    A method for preparing the low-meltmg point glass powder comprises the following steps:
    1) uniformly mixing raw materials and melting the raw materials at 600°C for 30 minutes to obtain a molten glass, wherein the raw materials comprise: 25 parts by mass of SnCL, 10 parts by mass of P2O5, 10 parts by mass of B2O3, 0.5 parts by mass of L12O, 2 parts by mass of ZrC>2, 3 parts by mass of Na2O, 1 part by mass of NaF, and 10 parts by mass of B12O3;
    2) quenching the molten glass, wherein the molten glass is poured into a copper mold and naturally cooled to room temperature of 20-25°C to obtain bulk glass; and
    3) crushing the bulk glass and putting the resultant into a ball mill to obtain the low melting point glass powder, the particle diameter of which is less than or equal to 10 pm.
    Example 2
    There is provided a method for preparing a heat-insulating glass glaze, wherein a low-melting point glass powder, a heat radiation blocking agent, sodium silicate and a heat conduction blocking agent are uniformly mixed to obtain the heat-insulating glass glaze, wherein in parts by mass, the ratio of the low-melting point glass powder to the heat conduction blocking agent to the sodium silicate to the heat radiation blocking agent is 70 : 5 : 2 : 5, the heat radiation blocking agent is ATO (antimony-doped tin oxide) nanopowder, and the heat conduction blocking agent is a nano-silica aerogel.
    A method for preparing the low-melting point glass powder comprises the following steps:
    1) uniformly mixing raw materials and melting the raw materials at 600°C for 30 minutes to obtain a molten glass, wherein the raw materials comprise: 25 parts by mass of SnCh, 10 parts by mass of P2O5, 10 parts by mass of B2O3, 0.5 parts by mass of L12O, 2 parts by mass of ZrOz, 3 parts by mass of NaiO, 1 part by mass ofNaF, and 10 parts by mass of B12O3;
    2) quenching the molten glass, wherein the molten glass is poured into a copper mold and naturally cooled to room temperature of 20-25°C to obtain bulk glass; and
    3) crushing the bulk glass and putting the resultant into a ball mill to obtain the lowmelting point glass powder, the particle diameter of which is less than or equal to 10 pm.
    Example 3
    There is provided a method for preparing a heat-insulating glass glaze, wherein a low-melting point glass powder, a heat radiation blocking agent, sodium silicate and a heat conduction blocking agent are uniformly mixed to obtain the heat-insulating glass glaze, wherein in parts by mass, the ratio of the low-melting point glass powder to the heat conduction blocking agent to the sodium silicate to the heat radiation blocking agent is 70 : 5 : 3 : 5, the heat radiation blocking agent is ATO (antimony-doped tin oxide) nanopowder, and the heat conduction blocking agent is a nano-silica aerogel.
    A method for preparing the low-melting point glass powder comprises the following steps:
    1) uniformly mixing raw materials and melting the raw materials at 600°C for 30 minutes to obtain a molten glass, wherein the raw materials comprise: 25 parts by mass of SnCh, 10 parts by mass of P2O5, 10 parts by mass of B2O3, 0.5 parts by mass of L12O, 2 parts by mass of ZrCh, 3 parts by mass of Na2O, 1 part by mass of NaF, and 10 parts by mass of B12O3;
    2) quenching the molten glass, wherein the molten glass is poured into a copper mold and naturally cooled to room temperature of 20-25°C to obtain bulk glass; and
    3) crushing the bulk glass and putting the resultant into a ball mill to obtain the lowmelting point glass powder, the particle diameter of which is less than or equal to 10 pm.
    Example 4
    There is provided a method for preparing a heat-insulating glass glaze, wherein a low-melting point glass powder, a heat radiation blocking agent, sodium silicate and a heat conduction blocking agent are uniformly mixed to obtain the heat-insulating glass glaze, wherein 111 parts by mass, the ratio of the low-melting point glass powder to the heat conduction blocking agent to the sodium silicate to the heat radiation blocking agent is 70 : 5 : 3 : 5, the heat radiation blocking agent is ATO (antimony-doped tin oxide) nanopowder, and the heat conduction blocking agent is a nano-silica aerogel.
    A method for preparing the low-melting point glass powder comprises the following steps:
    1) uniformly mixing raw materials and melting the raw materials at 600°C for 30 minutes to obtain a molten glass, wherein the raw materials comprise: 25 parts by mass of SnCB, 10 parts by mass of P2O5, 10 parts by mass of B2O3, 0.5 parts by mass of L12O, 2 parts by mass of ZrC>2, 3 parts by mass of Na2O, 1 parts by mass of NaF, 10 parts by mass of TeO2;
    2) quenching the molten glass, wherein the molten glass is poured into a copper mold and naturally cooled to room temperature of 20-25°C to obtain bulk glass; and
    3) crushing the bulk glass and putting the resultant into a ball mill to obtain the lowmeltmg point glass powder, the particle diameter of which is less than or equal to 10 pm.
    Example 5
    There is provided a method for preparing a heat-insulating glass glaze, wherein a low-melting point glass powder, a heat radiation blocking agent, sodium silicate and a heat conduction blocking agent are uniformly mixed to obtain the heat-insulating glass glaze, wherein in parts by mass, the ratio of the low-melting point glass powder to the heat conduction blocking agent to the sodium silicate to the heat radiation blocking agent is 70 : 5 : 3 : 5, the heat radiation blocking agent is ATO (antimony-doped tin oxide) nanopowder, and the heat conduction blocking agent is a nano-silica aerogel.
    A method for preparing the low-melting point glass powder comprises the following steps:
    1) uniformly mixing raw materials and melting the raw materials at 600°C for 30 minutes to obtain a molten glass, wherein the raw materials comprise: 25 parts by mass of SnCh, 10 parts by mass of P2O5, 10 parts by mass of B2O3, 0.5 parts by mass of L12O, 2 parts by mass of ZrCh, 3 parts by mass of NazO, 1 parts by mass of NaF, 10 parts by mass of V2O5;
    2) quenching the molten glass by pouring the molten glass into a copper mold and naturally cooling the glass to room temperature of 20-25°C to obtain bulk glass; and
    3) crushing the bulk glass and putting the resultant into a ball mill to obtain the lowmelting point glass powder, the particle diameter of which is less than or equal to 10 pm.
    There is provided a method for preparing a transparent heat-insulating coating using the heat-insulating glass glaze of the above-mentioned examples, the method comprising the following steps:
    a) uniformly mixing the heat-insulating glass glaze with ethanol to obtain a slurry, spraying the slurry to a surface of a substrate to form a coating, and drying the coating at 50°C for 60 min, wherein the substrate is glass, the pressure of compressed air for spraying is 3 MPa, and in parts by mass, the ratio of the heat-insulatmg glass glaze to the ethanol is 1 : 2; and
    b) sintering the dried coating at 200°C for 80 min to obtain the transparent heatinsulating coating on the surface of the substrate, with the thickness of the transparent heat-insulating coating being 200 pm.
    As compared with the blank glass before use, the thermal conductivity coefficient of the glass coated with the transparent heat-insulating coating obtained in Example 1 is reduced by 30%, and the barrier coefficient to infrared light is increased by 43%; the thermal conductivity coefficient of the glass coated with the transparent heat-insulating coating obtained in Example 2 is reduced by 25%, and the barrier coefficient to infrared light is increased by 48%; the thermal conductivity coefficient of the glass coated with the transparent heat-insulating coating obtained in Example 3 is reduced by 27%, and the barrier coefficient to infrared light is increased by 46%; the thermal conductivity coefficient of the glass coated with the transparent heat-insulating coating obtained in Example 4 is reduced by 31%, and the barrier coefficient to infrared light is increased by 42%; and the thermal conductivity coefficient of the glass coated with the transparent heat-insulating coating obtained in Example 5 is reduced by 26%, and the barrier coefficient to infrared light is increased by 49%.
    The glass transition temperatures of the low-melting point glass powders of the present invention are all less than or equal to 300°C, and the visible light transmittances of the transparent heat-insulating coatings obtained in the above-mentioned examples are all greater than or equal to 90%.
    The transparent heat-insulating coating obtained in Example 1 was subjected to an aging test involving irradiation under ultraviolet light for one month, and it was found that there was no change in the appearance shape, light transmission performance, and heat insulation properties of the transparent heat-insulating coating. The glass to which the transparent heat-insulating coating of Example 1 of the present invention was attached was subjected to a test involving a cross-cut tester, and after testing, the adhesion of the transparent heat-msulatmg coating obtained in Example 1 of the present invention to glass was 0.
    The present invention has been described above by way of example, and it should be noted that without departing from the core of the present invention, any simple variations, modifications, or other equivalent replacements that would be made by a person skilled in the art without involving any inventive effort all fall within the scope of protection of the present invention.
    权利要求:
    Claims (3)
    [1]
    CONCLUSION
    A method for preparing a heat-insulating glass glaze, characterized in that a glass powder with a low melting point, a heat radiation blocker, sodium silicate and a heat conduction blocker are uniformly mixed to obtain the heat-insulating glass glaze, wherein, based on the mass parts, the ratio of the low melting glass powder to the thermal conduction blocker to the sodium silicate to the heat radiation blocker is (60-80): (5-15): (1-3): (5-15), and the heat radiation blocker is ITO nanopowder , ATO nanopowder, FTO nanopowder or ZTO nanopowder, and the heat conduction blocking agent is a nano-silica gel aerogel, and the method for preparing the low melting glass powder comprises the following steps:
    1) Mix raw materials uniformly and melt the raw materials for 10-50 minutes at 500-700 ° C to obtain a molten glass, the raw materials comprising: 25-40 parts by mass of SnCh, 10-30 parts by mass of P2O5, 10-20 parts by mass of B2O3, 0.5-1.5 parts by mass of Li 2 O, 1-3 parts by mass of ZrCb, 2-5 parts by mass of Na 2 O, 1-2 parts by mass of NaF and 5-25 parts by mass of B12O3, V 2 Os, S1O2, TeCh or Al2O3;
    [2]
    2) Extinguish the molten glass by pouring the molten glass into a copper mold and cool the glass naturally to room temperature of 20-25 ° C to obtain bulk glass;
    [3]
    3) Crush the bulk glass and place the result in a ball mill to obtain the glass powder with low melting point.
    The preparation method according to claim 1, characterized in that the particle diameter of the heat conduction blocking agent is less than or equal to 50 nm.
    The preparation method according to claim 1, characterized in that the porosity of the heat conduction blocking agent is greater than 90%.
    The preparation method according to claim 1, characterized in that the particle diameter of the low melting point glass powder is less than or equal to 10 µm.
    A heat insulating glass glaze obtained by the preparation method according to any of claims 1 to 4.
    A method for preparing a transparent heat-insulating coating using the heat-insulating glass glaze according to claim 5, characterized in that the method comprises the following steps:
    a) Mix the heat-insulating glass glaze evenly with ethanol to obtain a suspension, spray the suspension on a surface of a substrate to form a coating and dry the coating at 40-80 ° C for 30-60 minutes, mass-dividing ratio of the heat-insulating glass enamel to the ethanol is 1: (2-5); and
    b) Sinter the dried coating for 50-120 minutes at 200-300 ° C
    5 to obtain a transparent heat-insulating coating on the surface of the substrate.
    The method according to claim 6, characterized in that in a) the pressure of compressed air for spraying is 1-7 MPa.
    The method according to claim 6, characterized in that in b) the thickness of the transparent heat-insulating coating obtained on the surface of the substrate is
    10 100-300 µm.
    The use of the heat-insulating glass glaze according to claim 6 for improving the permeability of visible light of the transparent heat-insulating coating.
    The use according to claim 9, characterized in that the visible one
    The light transmittance of the transparent heat-insulating coating is greater than or equal to 90%.
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    同族专利:
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CN201911158489.4A|CN112830680A|2019-11-22|2019-11-22|Heat-insulating glass glaze and preparation method thereof|
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