阅读说明：本技术 具有减反功能的防雾玻璃及其制备方法 (Anti-fog glass with anti-reflection function and preparation method thereof ) 是由 何冰晓 林炜杰 张睿智 吴信昌 刘风雷 唐健 于 2020-07-14 设计创作，主要内容包括：本发明提供一种具有减反功能的防雾玻璃及其制备方法,属于材料制备技术领域。具有减反功能的防雾玻璃的制备方法,包括：将玻璃基底与预设溶液反应,使得玻璃基底的表面形成多孔纳米分层结构以得到具有减反功能的防雾玻璃,其中,预设溶液包含有碳酸氢根离子,且溶质质量分数为2％至15％。本发明的目的在于提供一种具有减反功能的防雾玻璃及其制备方法,能够使水在接触玻璃表面时迅速铺展开,即降低水在玻璃表面的接触角,从而实现防雾效果,同时能够提供优异的减反效果。(The invention provides anti-fog glass with an anti-reflection function and a preparation method thereof, belonging to the technical field of material preparation. The preparation method of the antifogging glass with the antireflection function comprises the following steps: reacting the glass substrate with a preset solution to form a porous nano layered structure on the surface of the glass substrate so as to obtain the antifogging glass with the antireflection function, wherein the preset solution contains bicarbonate ions, and the mass fraction of solute is 2-15%. The invention aims to provide antifogging glass with an antireflection function and a preparation method thereof, which can rapidly spread water when contacting the surface of the glass, namely reduce the contact angle of the water on the surface of the glass, thereby realizing an antifogging effect and simultaneously providing an excellent antireflection effect.)

1. A preparation method of antifogging glass with anti-reflection function is characterized by comprising the following steps:

reacting the glass substrate with a preset solution to enable the surface of the glass substrate to form a porous nano layered structure so as to obtain the antifogging glass with the antireflection function, wherein the preset solution contains bicarbonate ions, and the mass fraction of solute is 2-15%.

2. The method of claim 1, wherein reacting the glass substrate with a predetermined solution comprises:

and placing the glass substrate and the preset solution into a reaction vessel, and keeping the reaction vessel at a preset reaction temperature within a preset reaction time period or keeping the reaction vessel at the preset reaction temperature within the preset reaction time period in a stepped temperature changing manner.

3. The method of claim 2, wherein the predetermined reaction temperature is from 110 ℃ to 180 ℃.

4. The method of claim 3, wherein the predetermined reaction time period is 2 hours to 30 hours.

5. The method of any one of claims 1 to 4, wherein the predetermined solution is a sodium bicarbonate solution.

6. The method of claim 5, wherein the glass substrate is soda glass and the predetermined solution has a solute mass fraction of 7.7%.

7. The method of claim 5, wherein the glass substrate is borosilicate float glass sheet and the predetermined solution has a solute mass fraction of 14.4%.

8. An antifogging glass with antireflection function, characterized by being produced by the production method of an antifogging glass with antireflection function according to any one of claims 1 to 7.

9. An anti-fog glass with anti-reflection function as claimed in claim 8, wherein the glass substrate is soda glass, and the anti-fog glass with anti-reflection function has a surface contact angle with water of 6 ° to 25 °.

10. An anti-fog glass with anti-reflection function as claimed in claim 8, wherein the glass substrate is borosilicate float flat glass, and the anti-fog glass with anti-reflection function has a contact angle with water of 5 ° to 15 °.

Technical Field

The invention relates to the technical field of material preparation, in particular to antifogging glass with an anti-reflection function and a preparation method thereof.

Background

Fogging is one of the common phenomena in nature, and when the ambient temperature is lower than or equal to the dew point, moisture in the atmosphere will condense into small and dispersed droplets on the solid surface. Since these formed droplets are irregular and dispersed, the incident light is severely scattered on the surface thereof, resulting in a severe influence on the optical properties. For example, when walking from a cold outdoor place to a warm indoor place in winter, a layer of water mist appears on the mirror surface of the glasses and is blurred, and the water mist can be dissipated after a period of time.

Methods for preventing the fogging phenomenon are mainly classified into two categories, one of which is to change surrounding environmental factors, such as accelerating the air flow rate around the material object, reducing the environmental humidity, and the like; the second is to change the interaction relationship between the water drop and the solid interface. For example, a layer of cleaning agent is coated on the surface of glass by using a dry rag to form a hydrophilic film layer on the surface of the solid, so that the contact angle of water on the surface of the solid is reduced, water drops can spread rapidly on the surface of the solid, and the antifogging effect is achieved.

In the second method, a currently common method is to prepare a hydrophilic film layer to achieve the purpose of antifogging the glass. But the antifogging glass has defects in performance and process due to the limitation of the preparation process of the hydrophilic film layer. On one hand, the hydrophilic film layer has poor durability or needs certain conditions (ultraviolet light and the like) to excite the antifogging property; on the other hand, the preparation process has the disadvantages of time consumption, complexity, use of hazardous chemicals and the like. In addition, the prepared hydrophilic film layer is single in function, is limited to the application in the field of surface chemistry, does not expand the application in other fields (such as optical direction), and does not have the effect of reducing the adverse reaction.

Disclosure of Invention

The invention aims to provide antifogging glass with an antireflection function and a preparation method thereof, which can rapidly spread water when contacting the surface of the glass, namely reduce the contact angle of the water on the surface of the glass, thereby realizing an antifogging effect and simultaneously providing an antireflection effect.

The embodiment of the invention is realized by the following steps:

in one aspect of the embodiments of the present invention, there is provided a method for preparing an anti-fog glass with an anti-reflection function, including: reacting the glass substrate with a preset solution to form a porous nano layered structure on the surface of the glass substrate so as to obtain the antifogging glass with the antireflection function, wherein the preset solution contains bicarbonate ions, and the mass fraction of solute is 2-15%.

Optionally, reacting the glass substrate with a predetermined solution comprising:

placing a glass substrate and a preset solution in a reaction vessel, and keeping the reaction vessel at a preset reaction temperature within a preset reaction time period or keeping the reaction vessel at the preset reaction temperature in a stepped temperature change manner within the preset reaction time period.

Alternatively, the preset reaction temperature is 110 ℃ to 180 ℃.

Alternatively, the preset reaction time period is 2 hours to 30 hours.

Optionally, the predetermined solution is a sodium bicarbonate solution.

Optionally, the glass substrate is soda glass and the predetermined solution has a solute mass fraction of 7.7%.

Optionally, the glass substrate is borosilicate float glass and the preset solution has a solute mass fraction of 14.4%.

In another aspect of the embodiments of the present invention, there is provided an anti-fog glass having an anti-reflection function, including: the anti-fog glass with the anti-reflection function is prepared by the preparation method of any one of the anti-fog glasses with the anti-reflection function.

Alternatively, the glass substrate is high-transmittance modified soda glass, and the contact angle of the surface of the anti-fog glass with the anti-reflection function and water is 6-25 degrees.

Optionally, the glass substrate is borosilicate float flat glass, and the contact angle of the surface of the anti-fog glass with the anti-reflection function and water is 5-15 degrees.

The embodiment of the invention has the beneficial effects that:

according to the preparation method of the antifogging glass with the antireflection function, provided by the embodiment of the invention, the glass substrate and a preset solution which contains bicarbonate ions and has a solute mass fraction of 2-15% are reacted, so that a porous nano layered structure is formed on the surface of the treated glass substrate. The porous nano layered structure formed on the surface of the glass substrate has a very large specific surface area, so that when water molecules are attached to the porous nano layered structure, the water molecules can slide from large pores on the surface of the porous nano layered structure to small pores in the porous nano layered structure, so that water drops can be spread out, and the surface of the glass substrate has an anti-fog effect. And moreover, as the surface of the glass substrate forms a porous nano layered structure, the porous nano layered structure can reduce the refractive index of the surface of the glass substrate, so that the surface of the glass substrate has a gradient refractive index, reflected light of the glass substrate is subjected to destructive interference, and the function of antireflection is realized.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic flow chart of a method for preparing an anti-fog glass with anti-reflection function according to an embodiment of the present invention;

FIG. 2 is a surface electron microscope image of a glass substrate with a porous nano-layered structure formed on the surface thereof obtained in example 1 of the present invention;

FIG. 3 is a surface electron microscope image of a glass substrate with a porous nano-layered structure formed on the surface thereof obtained in example 2 of the present invention;

FIG. 4 is a surface electron microscope image of a glass substrate with a porous nano-layered structure formed on the surface thereof obtained in example 3 of the present invention;

FIG. 5 is a sectional electron microscope image of a glass substrate with a porous nano-layered structure formed on the surface thereof obtained in example 3 of the present invention;

FIG. 6 is a reflected light spectrum of a glass substrate having a porous nano-layered structure formed on the surface thereof, obtained in each of examples 1 to 3 of the present invention;

FIG. 7 is a transmission spectrum of a glass substrate having a porous nano-layered structure formed on the surface thereof, obtained in each of examples 1 to 3 of the present invention;

FIG. 8 is a surface electron microscope image of a glass substrate with a porous nano-layered structure formed on the surface thereof obtained in example 4 of the present invention;

FIG. 9 is a surface electron microscope image of a glass substrate with a porous nano-layered structure formed on the surface thereof obtained in example 5 of the present invention;

FIG. 10 is a SEM image of a glass substrate with a porous nano-layered structure formed on the surface thereof obtained in example 5 of the present invention;

FIG. 11 is a reflected light spectrum of a glass substrate having a porous nano-layered structure formed on the surface thereof obtained in examples 4 and 5 of the present invention, respectively;

FIG. 12 is a transmission spectrum of a glass substrate having a porous nano-layered structure formed on the surface thereof obtained in examples 4 and 5 of the present invention, respectively.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.