阅读说明：本技术 减反射镀膜玻璃及其制作方法 (Antireflection coated glass and manufacturing method thereof ) 是由 李友情 刘笑荣 徐小明 王润 肖长华 陈林 李晓东 常振 丁传标 唐法君 于 2020-06-30 设计创作，主要内容包括：本申请属于光伏玻璃制作技术领域,尤其涉及一种减反射镀膜玻璃及其制作方法；该减反射镀膜玻璃制作方法包括以下步骤：S10：提供原料：提供玻璃基板和AR镀膜液；S20：预热：玻璃基板进入预热炉内进行预热处理,预热炉的预热温度范围为120℃～150℃；S30：镀膜：AR镀膜液涂覆于玻璃基板的表面；S40：固化：玻璃基板放入固化炉,以使得AR镀膜液固化形成AR膜层,得到镀膜玻璃；S50：钢化：镀膜玻璃放入钢化炉内进行钢化,得到减反射镀膜玻璃。由于在玻璃基板镀膜前将玻璃基板放置在120℃～150℃的环境中进行预热,并将玻璃基板烘干,避免玻璃基板表面出现吸潮起雾的问题,从而有效地提高了AR膜层的透过率,使得最终得到减反射镀膜玻璃的透过率可达到93.85％～94.15％。(The application belongs to the technical field of photovoltaic glass manufacturing, and particularly relates to antireflection coated glass and a manufacturing method thereof; the manufacturing method of the antireflection coated glass comprises the following steps: s10: providing raw materials: providing a glass substrate and an AR coating liquid; s20: preheating: the glass substrate enters a preheating furnace for preheating treatment, and the preheating temperature range of the preheating furnace is 120-150 ℃; s30: film coating: coating AR coating liquid on the surface of the glass substrate; s40: and (3) curing: putting the glass substrate into a curing furnace to cure the AR coating liquid to form an AR film layer to obtain coated glass; s50: tempering: and (4) placing the coated glass into a tempering furnace for tempering to obtain the antireflection coated glass. Because the glass substrate is placed in the environment of 120-150 ℃ for preheating before the glass substrate is coated with the film, and the glass substrate is dried, the problem that the surface of the glass substrate absorbs moisture and is fogged is avoided, the transmittance of the AR film layer is effectively improved, and the transmittance of the finally obtained antireflection coated glass can reach 93.85% -94.15%.)

1. The manufacturing method of the antireflection coated glass is characterized by comprising the following steps of:

s10: providing raw materials: providing a glass substrate and an AR coating liquid;

s20: preheating: the glass substrate enters a preheating furnace for preheating treatment, and the preheating temperature range of the preheating furnace is 120-150 ℃;

s30: film coating: the AR coating liquid is coated on the surface of the glass substrate;

s40: and (3) curing: putting the glass substrate into a curing furnace to cure the AR coating liquid to form an AR film layer to obtain coated glass;

s50: tempering: and placing the coated glass into a tempering furnace for tempering to obtain the antireflection coated glass.

2. The manufacturing method of the antireflection coated glass according to claim 1, characterized in that: the step S30 is completed in a coating chamber, the temperature of the coating chamber is set to be 20-25 ℃, and the humidity range of the coating chamber is 40-50%.

3. The manufacturing method of the antireflection coated glass according to claim 1, characterized in that: in the step S20, the temperature range of the glass substrate after being taken out of the preheating furnace is 25 to 30 ℃.

4. The method for manufacturing an antireflection coated glass according to any one of claims 1 to 3, characterized in that: in step S40, the temperature range of the curing oven is set to 145 to 155 ℃.

5. The manufacturing method of the antireflection coated glass according to claim 4, characterized in that: in the step S40, the temperature of the curing oven is set to 150 ℃.

6. The method for manufacturing an antireflection coated glass according to any one of claims 1 to 3, characterized in that: in the step S40, the temperature of the coated glass exiting the curing oven is greater than 45 ℃.

7. The method for manufacturing an antireflection coated glass according to any one of claims 1 to 3, characterized in that: in the step S50, the tempering temperature range of the tempering furnace is 680 to 715 ℃.

8. The method for manufacturing an antireflection coated glass according to any one of claims 1 to 3, characterized in that: in the step S10, the AR coating liquid has a refractive index ranging from 1.25 to 1.35.

9. The method for manufacturing an antireflection coated glass according to any one of claims 1 to 3, characterized in that: the thickness range of the AR film layer is 115 nm-125 nm.

10. An antireflection coated glass is characterized in that: the antireflection coated glass is manufactured by the manufacturing method of the antireflection coated glass according to any one of claims 1 to 9.

Technical Field

The application belongs to the technical field of photovoltaic glass manufacturing, and particularly relates to antireflection coated glass and a manufacturing method thereof.

Background

Solar cell panel is through absorbing the sunlight, directly or indirectly convert solar radiation energy into the device of electric energy through photoelectric effect or photochemical effect, solar cell panel includes solar wafer and two toughened glass usually, solar wafer passes through the film and bonds the centre gripping between two toughened glass, thereby light sees through toughened glass shines at solar wafer like this, solar wafer will nurse radiant energy conversion for the electric energy, thereby realize solar cell panel's generating operation.

In order to improve the light transmittance of the tempered glass and improve the photoelectric conversion efficiency, an Anti-Reflection (AR-Reflection) film layer is usually coated on the surface of the tempered glass to form the Anti-Reflection coated glass, so as to reduce the Reflection of light and improve the transmittance, but the transmittance of the existing Anti-Reflection coated glass is generally 93.7% -94%, and cannot meet the requirement of higher transmittance.

Disclosure of Invention

The application aims to provide antireflection coated glass and a manufacturing method thereof, and aims to solve the technical problem that the transmittance of the antireflection coated glass in the prior art cannot meet the requirement of higher transmittance.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: a manufacturing method of antireflection coated glass comprises the following steps:

s10: providing raw materials: providing a glass substrate and an AR coating liquid;

s20: preheating: the glass substrate enters a preheating furnace for preheating treatment, and the preheating temperature range of the preheating furnace is 120-150 ℃;

s30: film coating: the AR coating liquid is coated on the surface of the glass substrate;

s40: and (3) curing: putting the glass substrate into a curing furnace to cure the AR coating liquid to form an AR film layer to obtain coated glass;

s50: tempering: and placing the coated glass into a tempering furnace for tempering to obtain the antireflection coated glass.

Optionally, the step S30 is completed in a coating chamber, the temperature of the coating chamber is set to 20 ℃ to 25 ℃, and the humidity range of the coating chamber is 40% to 50%.

Optionally, in the step S20, the temperature range of the glass substrate after exiting from the preheating furnace is 25 ℃ to 30 ℃.

Optionally, in the step S40, the temperature range of the curing oven is set to 145 ℃ to 155 ℃.

Optionally, in the step S40, the temperature of the curing oven is set to 150 ℃.

Optionally, in the step S40, the temperature of the coated glass exiting the curing oven is greater than 45 ℃.

Optionally, in the step S50, the tempering temperature of the tempering furnace ranges from 680 ℃ to 715 ℃.

Optionally, in the step S10, the refractive index of the AR coating liquid ranges from 1.25 to 1.35.

Optionally, the thickness of the AR film layer ranges from 115nm to 125 nm.

One or more technical schemes in the antireflection coating manufacturing method provided by the application have at least one of the following technical effects: preparing raw materials, a glass substrate and an AR coating liquid, preheating the glass substrate in an environment of 120-150 ℃, coating the AR coating liquid on the surface of the glass substrate after preheating is finished, then curing the AR coating liquid to form an AR coating layer on the surface of the glass substrate to obtain coated glass, and finally placing the coated glass in a tempering furnace for tempering to finally obtain the anti-reflection coated glass; the glass substrate is placed in an environment of 120-150 ℃ for preheating before the glass substrate is coated with the film, and is dried, so that the problem that the surface of the glass substrate absorbs moisture and is fogged is solved, the moisture in the subsequent AR film layer is prevented, the refractive index of the AR film layer is reduced, the transmittance of the subsequent AR film layer is effectively improved, and the transmittance of the finally obtained antireflection coated glass can reach 93.85% -94.15%.

Another technical scheme adopted by the application is as follows: an antireflection coated glass is manufactured by adopting the manufacturing method of the antireflection coated glass.

The antireflection coated glass is manufactured by the manufacturing method, so that before the glass substrate of the antireflection coated glass is coated, the glass substrate is placed in an environment of 120-150 ℃ for preheating, and is dried, the problem that the surface of the glass substrate absorbs moisture and generates fog is avoided, moisture in a subsequent AR film layer is prevented, the refractive index of the AR film layer is reduced, the transmittance of the subsequent AR film layer is effectively improved, and the transmittance of the finally obtained antireflection coated glass can reach 93.85% -94.15%.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a flowchart of a method for manufacturing an antireflection coating according to an embodiment of the present application.

FIG. 2 is a QE curve of a single crystal silicon solar panel manufactured by using the antireflection coated glass manufactured by the seventh technical scheme of the embodiment;

fig. 3 is a QE response curve of a polycrystalline silicon solar cell panel manufactured by using the antireflection coated glass manufactured by the seventh technical scheme of the embodiment.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to fig. 1-3 are exemplary and intended to be used to illustrate the present application and should not be construed as limiting the present application.

In one embodiment of the present application, as shown in fig. 1, there is provided a method for manufacturing an antireflection coated glass, comprising the steps of:

s10: providing raw materials: providing a glass substrate and an AR coating liquid;

s20: the glass substrate enters a preheating furnace for preheating treatment, and the preheating temperature range of the preheating furnace is 120-150 ℃;

s30: film coating: coating AR coating liquid on the surface of the glass substrate; wherein, AR coating liquid is coated on the surface of the glass substrate by a roll coating method, and the manufacturing method is simple.

S40: and (3) curing: putting the glass substrate into a curing furnace to cure the AR coating liquid to form an AR film layer to obtain coated glass;

s50: tempering: and (4) placing the coated glass into a tempering furnace for tempering to obtain the antireflection coated glass.

The following further describes a manufacturing method of the antireflection coated glass provided in the embodiment of the present application: the method for manufacturing the antireflection coating comprises the steps of preparing raw materials, a glass substrate and an AR coating liquid, preheating the glass substrate in an environment of 120-150 ℃, coating the AR coating liquid on the surface of the glass substrate after preheating is finished, solidifying the AR coating liquid, forming an AR film layer on the surface of the glass substrate to obtain coated glass, and tempering the coated glass in a tempering furnace to finally obtain the antireflection coated glass; the glass substrate is placed in an environment of 120-150 ℃ for preheating before the glass substrate is coated with the film, and is dried, so that the problem that the surface of the glass substrate absorbs moisture and is fogged is solved, the moisture in the subsequent AR film layer is prevented, the refractive index of the AR film layer is reduced, the transmittance of the subsequent AR film layer is effectively improved, and the transmittance of the finally obtained antireflection coated glass can reach 93.85% -94.15%.

Furthermore, the preheating temperature can be 120 ℃, 122 ℃, 124 ℃, 126 ℃, 128 ℃, 130 ℃, 132 ℃, 134 ℃, 136 ℃, 138 ℃, 140 ℃, 142 ℃, 144 ℃, 146 ℃, 148 ℃ or 150 ℃, and the preheating temperature is set in the range, so that the transmittance of the AR film layer can be effectively improved, and the transmittance of the antireflection coated glass is improved; if the preheating temperature before the film coating of the glass substrate is too low, the glass substrate is not dried, and the surface absorbs moisture and is fogged, so that moisture exists in holes in the subsequent AR film layer, the refractive index of the moisture is high, and the permeation of the subsequent AR film layer is reduced; if the preheating temperature before the glass substrate is coated is too high, the AR film layer is not uniform, and the subsequent permeation of the AR film layer is reduced.

In another embodiment of the application, the glass substrate of the antireflection coated glass manufacturing method is an ultra-white embossed glass original sheet, the glossiness of the ultra-white embossed glass original sheet is greater than 80GU, and the roughness of the ultra-white embossed glass original sheet is less than 0.5. Specifically, the glass substrate is manufactured by blank glass sheets with a degree of gloss greater than 80GU and a roughness less than 0.5, and the blank glass sheets with the degree of roughness less than 0.5 have good transmittance, so that the transmittance of the antireflection glass can be further improved.

In another embodiment of the present application, in the step S20 of the manufacturing method of the antireflection coated glass, the preheating temperature may be in a temperature range of 130 ℃ to 140 ℃.

Specifically, the preheating temperature can be 130 ℃, 131 ℃, 132 ℃, 133 ℃, 134 ℃, 135 ℃, 136 ℃, 137 ℃, 138 ℃, 139 ℃ or 140 ℃, and the preheating temperature is within the range of 130 ℃ to 140 ℃, so that the uniformity of the AR film layer is better on the basis of ensuring that the surface of the glass substrate is not fogged, and the permeability of the AR film layer is better.

In another embodiment of the present application, step S30 of the manufacturing method of anti-reflection coated glass is completed in a coating chamber, the temperature of the coating chamber is set to 20 ℃ to 25 ℃, and the humidity of the coating chamber is set to 40% to 50%.

Specifically, the temperature of the coating chamber can be 20 ℃, 21.5 ℃, 22 ℃, 22.5 ℃, 23 ℃, 23.5 ℃, 24 ℃, 24.5 ℃ or 25 ℃, the humidity of the coating chamber can be 40%, 41%, 42%, 3%, 44%, 45%, 46%, 47%, 48%, 49% or 50%, the temperature and the humidity of the coating chamber are respectively set in the ranges, the uniformity of the AR film layer is good, the transmittance is high, and the curing time period of the AR coating liquid can greatly improve the production efficiency; if the temperature of the coating chamber is set to be too high and the humidity is set to be too low, isopropanol in the AR coating liquid can volatilize too fast, the AR film layer is dried fast, and the AR film layer is not uniform; if the coating chamber temperature sets up and crosses lowly, humidity sets up too high, can make glass substrate surface moisture absorption fog, and influences the solidification of AR rete, and the AR rete transmissivity after the solidification reduces.

In another embodiment of the present application, in step S20 of the method for manufacturing anti-reflection coated glass, the temperature of the glass substrate after exiting the preheating furnace is in the range of 25 ℃ to 30 ℃.

Specifically, the temperature of the glass substrate after exiting the preheating furnace can be 25 ℃, 26 ℃, 27 ℃, 28 ℃, 29 ℃ or 30 ℃, and the glass substrate has a certain temperature after exiting the furnace, so that the phenomenon of moisture absorption and fogging of the glass substrate can be avoided, the transmittance of the antireflection coated glass is improved, the temperature of the glass substrate is not greatly different from the temperature of the coating chamber, and the coating chamber does not need to be heated after the glass substrate enters the coating chamber, so that the energy waste is avoided.

In another embodiment of the present application, in step S40, the temperature of the curing oven is set to 145-155 ℃.

Specifically, the temperature of the curing oven can be 145 ℃, 146 ℃, 147 ℃, 148 ℃, 149 ℃, 150 ℃, 151 ℃, 152 ℃, 153 ℃, 154 ℃ or 155 ℃, and the temperature range of the curing oven is set in the above range, so that the AR film layer can be completely cured, the curing effect is good, the AR film layer has good transmittance, and if the temperature of the curing oven is set too low, the AR film layer is not dried, the AR film layer has the problem of moisture absorption and fogging, and the transmittance of the AR film layer is affected; if the temperature of the curing oven is set too high, the transmittance of the AR film layer is not greatly influenced, but the power consumption of the curing oven is increased, and the production cost is increased.

Preferably, in step S40, the temperature of the curing oven is set to 150 ℃. The temperature of the curing oven is set at 150 ℃, the temperature is high, the curing speed of the AR film layer is high, the phenomenon of moisture absorption and fogging can not occur, and the transmittance of the AR film layer can be improved under the condition of ensuring good transmittance.

In another embodiment of the present application, in step S40 of the method for manufacturing anti-reflection coated glass, the temperature of the coated glass exiting the curing oven is greater than 45 ℃.

Specifically, the temperature of the coated glass out of the curing oven is more than 45 ℃, and the temperature of the coated glass is more than room temperature, so that the phenomenon that the coated glass absorbs moisture and is fogged to influence the transmittance is avoided. More specifically, the temperature of the coated glass exiting the curing oven can be 46 ℃, 50 ℃, 55 ℃, 60 ℃ or 65 ℃.

In another embodiment of the present application, in step S50 of the manufacturing method of antireflection coated glass, the tempering temperature of the tempering furnace is in the range of 680 to 715 ℃.

Specifically, the tempering temperature of the tempering furnace can be 680 ℃, 682 ℃, 684 ℃, 686 ℃, 690 ℃, 692 ℃, 694 ℃, 696 ℃, 698 ℃, 700 ℃, 702 ℃, 704 ℃, 706 ℃, 708 ℃, 710 ℃, 712 ℃, 714 ℃ or 715 ℃, and the tempering temperature is set in the range, so that the tempering effect of the coated glass is good, and the prepared antireflection coated glass has good performance; if the toughening temperature is set to be too low, the toughening performance of the coated glass is poor, and the use requirement of the solar cell panel cannot be met; if the tempering temperature is set too high, the AR film layer on the coated glass is easy to damage, and the transmission performance of the coated glass is affected.

In another embodiment of the present application, in step S10 of the method for manufacturing anti-reflective coated glass, the refractive index of the AR coating liquid is in a range of 1.25 to 1.35.

Specifically, the refractive index of the AR coating solution may be 1.25, 1.26, 1.27, 1.28, 1.29, 1.30, 131, 132, 133, 134, or 1.35, and the AR coating solution having the refractive index within the above range is coated on the AR film layer formed by curing the glass substrate, so that the reflectance can be effectively reduced, thereby increasing the transmittance.

In another embodiment of the present application, the AR film layer of the method for manufacturing antireflection coated glass is provided to have a thickness ranging from 115nm to 125 nm.

Specifically, the thickness of the AR film layer may be 115nm, 116nm, 117nm, 118nm, 119nm, 120nm, 121nm, 122nm, 123nm, 124nm or 125nm, the AR film layer within the above thickness range has good transmittance, if the thickness is set too small, the bonding between the AR film layer and the glass substrate is not firm, and the AR film layer is easy to fall off; if the thickness is set to be too large, the transmittance of the AR film layer is reduced, so that the transmittance of the antireflection coated glass is influenced.

Preferably, the thickness of the AR film layer is 120nm, and at this time, the transmittance of the AR film layer is the highest, and the power of the solar cell in the solar cell panel is the highest.

In another embodiment of the present application, an antireflection coated glass is provided, which is manufactured by the above antireflection coated glass manufacturing method.

The antireflection coated glass provided by the embodiment of the application is manufactured by adopting the manufacturing method of the antireflection coated glass, so that before the glass substrate of the antireflection coated glass is coated, the glass substrate is placed in the environment of 120-150 ℃ for preheating, and is dried, and the problem of moisture absorption and fogging on the surface of the glass substrate is avoided, so that moisture in a subsequent AR film layer is prevented, the refractive index of the AR film layer is further reduced, the transmittance of the subsequent AR film layer is effectively improved, and the transmittance of the finally obtained antireflection coated glass can reach 93.85% -94.15%.

As can be seen from the following table, the antireflection coated glass prepared by the technical scheme adopted in example seven has the highest transmittance.

Fig. 2 is a QE curve of a single crystalline silicon solar panel manufactured by using the antireflection coated glass manufactured by the seventh technical scheme of the embodiment, and fig. 3 is a QE curve of a polycrystalline silicon solar panel manufactured by using the antireflection coated glass manufactured by the seventh technical scheme of the embodiment; as can be seen from fig. 2 and 3, the solar cell panel manufactured by using the antireflection coated glass has excellent photoelectric conversion efficiency.

The following table compares the transmittance results of antireflection coatings made with different process parameters:

the present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.