阅读说明：本技术 一种抗pid网格玻璃及其制备方法 (anti-PID grid glass and preparation method thereof ) 是由 姜亚帅 庄浩 孙观 严勋 黄国平 李菁楠 于 2020-06-09 设计创作，主要内容包括：本发明公开了一种抗PID网格玻璃及其制备方法,其中抗PID网格玻璃,包括玻璃,所述的玻璃的表层附有二氧化钛,二氧化钛的表面包裹有透明的呈电中性的聚合物薄层。其中制备方法包括以下步骤：①、用改性剂对二氧化钛的表面进行改性；②、对改性后的二氧化钛的表面进行聚合物包裹；③、对聚合物进行表面改性,并制得液态的混合液,将混合液涂敷于玻璃上,并进行低温烘干。本发明具有制作简单、与玻璃粘接良好、优异的抗PID效果；传统玻璃烧制工艺通过高温将二氧化硅熔融后与玻璃粘接,而本发明通过表面涂覆、烘干即可,更节约能源。(The invention discloses anti-PID grid glass and a preparation method thereof, wherein the anti-PID grid glass comprises glass, titanium dioxide is attached to the surface layer of the glass, and a transparent polymer thin layer which is neutral in electricity is coated on the surface of the titanium dioxide. The preparation method comprises the following steps: firstly, modifying the surface of titanium dioxide by using a modifier; secondly, polymer wrapping is carried out on the surface of the modified titanium dioxide; thirdly, surface modification is carried out on the polymer, liquid mixed liquid is prepared, the mixed liquid is coated on the glass, and low-temperature drying is carried out. The invention has the advantages of simple manufacture, good bonding with glass and excellent PID resistance effect; according to the traditional glass firing process, silicon dioxide is fused at high temperature and then is bonded with glass, and the method provided by the invention is realized by surface coating and drying, so that the energy is saved.)

1. The PID-resistant grid glass is characterized by comprising glass, wherein titanium dioxide is attached to the surface layer of the glass, and a transparent electrically neutral polymer thin layer is wrapped on the surface of the titanium dioxide.

2. The PID resistant grid glass of claim 1, wherein the polymer layer is a polystyrene layer.

3. The method for preparing a PID resistant grid glass according to any of claims 1 to 2, characterized by comprising the steps of:

firstly, modifying the surface of titanium dioxide by using a modifier;

secondly, polymer wrapping is carried out on the surface of the modified titanium dioxide;

thirdly, surface modification is carried out on the polymer, liquid mixed liquid is prepared, the mixed liquid is coated on the glass, and low-temperature drying is carried out.

4. The method according to claim 3, wherein said titanium dioxide is in the form of spherical particles having a particle size of 0.1-100 μm.

5. The method according to claim 3, wherein the modifier is a silane coupling agent.

6. The method according to claim 3, wherein the polymer has a thickness of 5-100 nm.

7. The method for preparing PID-resistant grid glass according to claim 3, wherein in the step (r), firstly titanium dioxide is placed in water with a specific pH value, ultrasonic dispersion is carried out, then a silane coupling agent/ethanol mixed solution is added, condensation and reflux are carried out for 5h under normal pressure, and then drying is carried out at low temperature until all ethanol volatilizes.

8. The method for preparing PID-resistant grid glass according to claim 3, wherein in the second step, the modified titanium dioxide, the initiation monomer and the dispersant are put into styrene monomer, added with deionized water after emulsification, reacted for 2h after heating and stirring, filtered, washed and dried.

9. The method for preparing PID-resistant grid glass according to claim 3, wherein in the third step, the particles produced in the second step are placed in a silane coupling agent/ethanol mixed solution for condensing and refluxing for 5h under normal pressure, dried to a certain concentration under vacuum drying property at low temperature, coated on glass, and dried at low temperature.

Technical Field

The invention relates to anti-PID grid glass and a preparation method thereof.

Background

In the past, the large-scale use of traditional petrochemicals has promoted the continuous progress of the industrial level and the continuous improvement of the living standard of people, but the use of a large amount of fossil fuels causes the environmental pollution to be more serious, and seriously threatens the home upon which people live.

Various government agencies also continuously take powerful measures to suppress pollution, one of the measures is to rapidly develop green energy, and the photovoltaic module can directly convert sunlight into electric energy, is pollution-free, sustainable, high in efficiency and easy to realize, so that the photovoltaic module can be rapidly developed in recent years, and the current accumulated loading capacity of China breaks through 130.25 GW.

At present, the higher electricity consumption cost is still the main factor restricting the development of photovoltaic power generation, and the current bottleneck can be broken through only cost reduction and efficiency improvement.

The current efficiency improving method for large-scale mass production comprises the technologies of half-chip, multi-main-grid, double-face and the like, through the means, the monomer power of the component can be greatly improved, and the reported monomer power of the component breaks through 450W.

In order to further improve the power of the double-sided assembly, grid glass is matched with the mainstream of the market, namely, the reflected light of the chip spacing and the string spacing is utilized to further improve the output power by 3-5W. At present, the main component of a grid glass glaze layer is titanium dioxide, but a grid double-sided component has the PID blackening problem, so that the appearance is influenced, the reflectivity of grid glass is reduced, and the power is influenced; meanwhile, the traditional firing method has high energy consumption, so that a preparation method of the PID-resistant grid glass capable of saving energy needs to be further researched.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides anti-PID grid glass and a preparation method thereof.

The PID-resistant grid glass comprises glass, wherein titanium dioxide is attached to the surface layer of the glass, and a transparent electrically neutral polymer thin layer is wrapped on the surface of the titanium dioxide.

Preferably, the polymer thin layer is a polystyrene thin layer.

The preparation method of the PID-resistant grid glass is characterized by comprising the following steps of:

firstly, modifying the surface of titanium dioxide by using a modifier;

secondly, polymer wrapping is carried out on the surface of the modified titanium dioxide;

thirdly, surface modification is carried out on the polymer, liquid mixed liquid is prepared, the mixed liquid is coated on the glass, and low-temperature drying is carried out.

Preferably, the titanium dioxide is in the form of spherical particles with a particle size of 0.1-100 μm.

Preferably, the modifier is a silane coupling agent.

Preferably, the thickness of the polymer is 5 to 100 nm.

Preferably, in the step (i), titanium dioxide is firstly placed in water with a specific pH value, ultrasonic dispersion is carried out, then a silane coupling agent/ethanol mixed solution is added, condensation and reflux are carried out for 5 hours under normal pressure, and then drying is carried out at low temperature until ethanol is completely volatilized.

Preferably, in the second step, the modified titanium dioxide, the initiation monomer and the dispersing agent are placed in a styrene monomer, deionized water is added after emulsification, reaction is carried out for 2 hours after heating and stirring, and drying is carried out after filtration, washing and drying.

Preferably, in the third step, the particles generated in the second step are placed in a silane coupling agent/ethanol mixed solution for normal pressure condensation and reflux for 5 hours, the mixture is dried at a low temperature in a vacuum drying mode to a certain concentration, and the mixed solution is coated on glass and dried at a low temperature.

Has the advantages that:

the invention has the advantages of simple manufacture, good bonding with glass and excellent PID resistance effect; according to the traditional glass firing process, silicon dioxide is fused at high temperature and then is bonded with glass, and the method provided by the invention is realized by surface coating and drying, so that the energy is saved.

By coating a transparent electrically neutral polystyrene thin layer on the surface of the titanium dioxide. On one hand, the effect of solar reflected light is not obviously influenced, and the power of the module is basically not different; on the other hand, the nonpolar characteristic of the polystyrene can isolate external electrons when performing PID test, prevent the contact between the internal titanium dioxide and the electrons from being reduced, and the high temperature resistance of the polystyrene can also meet the outdoor use limit condition; meanwhile, the surface of the polystyrene is modified, so that the adhesion with glass is improved. And energy consumption can be further reduced by coating and low-temperature drying technologies.

Drawings

FIG. 1 is a schematic view of the general structure of a PID resistant grid glass and its manufacturing method;

1. titanium dioxide 2, silane coupling agent 3, outer layer high molecular polymer.

Detailed Description

For the purpose of enhancing the understanding of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.

The PID-resistant grid glass comprises glass, wherein titanium dioxide is attached to the surface layer of the glass, as shown in figure 1, the surface of the titanium dioxide is wrapped by a transparent electrically neutral polymer thin layer, and the polymer thin layer is a polystyrene thin layer.

The preparation method of the PID-resistant grid glass comprises the following steps:

firstly, modifying the surface of titanium dioxide by using a modifier, firstly, placing the titanium dioxide in water with the pH value of 5, carrying out ultrasonic dispersion, then adding a mixed solution of a silane coupling agent and ethanol (the mass ratio is 1:100), carrying out condensation reflux for 5 hours under normal pressure, and drying at low temperature until the ethanol is completely volatilized, wherein the titanium dioxide is spherical particles, and the particle size is 0.1-100 mu m;

secondly, polymer wrapping is carried out on the surface of the modified titanium dioxide, an initiating monomer (BPO dibenzoyl peroxide) and a dispersing agent (polyvinyl alcohol) are placed in a styrene monomer, deionized water is added after emulsification, reaction is carried out for 2 hours after heating and stirring, and the thickness of the generated polymer is 5-100nm after filtration, washing and drying.

Thirdly, surface modification is carried out on the polymer, liquid mixed liquid is prepared, the mixed liquid is coated on the glass and is dried at low temperature, the particles generated in the second step are placed in the mixed liquid of silane coupling agent/ethanol for normal pressure condensation and backflow for 5 hours, the particles are dried at low temperature in vacuum drying mode to certain concentration, the mixed liquid is coated on the glass, and the glass is dried at low temperature.

Firstly, carrying out surface modification on titanium dioxide, then carrying out polymer wrapping, and finally carrying out surface modification on the polymer. Through the measures, when the PID test is carried out, the surface polymer can block electrons from contacting with titanium dioxide, so that the phenomenon of blackening after PID is avoided.

The titanium dioxide particles are spherical, the particle size is 0.1-100 mu m, the modifying material is a silane coupling agent, preferably one of gamma-methacryloxypropyltrimethoxysilane, alpha-methacryloxy-methyl-triethoxysilane, gamma-methacryloxy-propyl-triethoxysilane, gamma-thiopropyltriethoxysilane, dichloromethyl triethoxysilane and vinyl tri (beta-methoxyethoxy) silane, the thickness of the polymer is 5-100nm, and the polymer is non-polar and has high temperature resistance, preferably polystyrene.

The operation flow is as follows:

firstly, placing titanium dioxide in water with the pH value of 5, carrying out ultrasonic dispersion, then adding a silane coupling agent/ethanol mixed solution, carrying out normal-pressure condensation and reflux for 5 hours, and carrying out vacuum drying and low-temperature drying until ethanol is completely volatilized;

then placing the modified titanium dioxide particles, the initiating monomer and the dispersing agent into a styrene monomer, fully emulsifying, adding deionized water, reacting for 2 hours after heating and stirring, filtering, washing and drying,

and then placing the polymer particles in a silane coupling agent/ethanol mixed solution for condensing and refluxing for 5 hours under normal pressure, drying the polymer particles to a certain concentration at a low temperature in a vacuum drying manner, coating the mixed solution on glass, and drying the glass at a low temperature.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.