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Preparation method for multifunctional TiO2 nano-paint

A nano-coating, multi-functional technology, applied in the direction of anti-fouling/underwater coatings, coatings, titanium oxide/hydroxide, etc., can solve the problem of no superhydrophilicity and decomposition of organic matter, poor cleaning effect, and no increase in light Transmittance and the effect of decomposing organic matter and other issues to achieve the effect of improving photoelectric conversion efficiency, avoiding interaction, and increasing effective luminous flux

Inactive Publication Date: 2016-10-26
BEIJING LION TRUNK NEW MATERIAL TECH CO LTD
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Problems solved by technology

[0005] As disclosed in the patent CN104745025A, a nano-TiO 2 The nano-modified coating with particle slurry as the raw material makes the film hydrophobic by changing the nano-morphology of the material surface, but under this hydrophobic technology, the glass surface is very easy to adhere to oily substances, and it is not easy to be washed, and the cleaning effect is not good, and It has been recognized in the field that hydrophobic groups are very easy to interact with the environment, and gradually lose their hydrophobic effect within half a year, and cannot guarantee long-term service life
[0006] As patent CN103626404 A, titanium dioxide / silicon dioxide has been prepared nano-crystal composite solution, and patent CN103936292 A is made up of titanium dioxide / silicon dioxide, triethanolamine, polyethylene glycol, ethylene glycol and the composite coating solution of aluminum oxide, although both It can self-clean the glass and improve the light transmittance, but it lacks the optical characteristics of photoluminescence, up-conversion and down-conversion, and does not improve the light utilization rate and thus does not increase the conversion efficiency of the battery.
And there is no superhydrophilicity and the ability to decompose organic matter
[0007] Patent CN103288358 discloses a super-hydrophilic self-cleaning and anti-fogging anti-reflection and anti-reflection coating and its preparation. The sol-gel method requires not only high-temperature treatment, but also three layers of coating, calcination, immersion, washing and drying, and other steps, and the obtained film layer does not have the reliability and weather resistance of 25 years. For the existing glass no practical value
[0008] Although the patent CN102898875A has a hydrophilic effect, it has no effect of increasing light transmittance and decomposing organic matter, and the manufacturing process is cumbersome
[0009] For the self-cleaning glass of photovoltaic modules, the above methods require a large investment in equipment, and it is not easy to achieve high light transmittance, nor can it be used to transform photovoltaic modules of completed power stations
Moreover, the use process is complex and requires a special spraying process, which cannot be directly sprayed on the surface of the component glass at room temperature with light professional equipment

Method used

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  • Preparation method for multifunctional TiO2 nano-paint
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  • Preparation method for multifunctional TiO2 nano-paint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] Embodiment 1 Multifunctional TiO of the present invention 2 The preparation method of nano coating

[0090] 1.1 Test steps:

[0091] Table 1 Multifunctional TiO of the present invention 2 The consumption of each component in the preparation method of nano coating

[0092]

[0093] Table 1 shows the multifunctional TiO of groups 1 to 3 in this example 2 The consumption of each component of nano coating. Taking group 3 as an example, prepare the multifunctional TiO of group 3 in this embodiment according to the following steps 2 Nano coatings.

[0094] (1) Primary TiO 2 Solution preparation:

[0095] The preparation environment is 25°C.

[0096] Mix 40ml of butyl titanate, 10ml of diethanolamine, and 300ml of isopropanol, mix and stir evenly to make solution A, and stir solution A with a stirrer for 1 hour;

[0097] Mix 200ml of isopropanol and 300ml of deionized water, stir evenly to make solution B, slowly add it to the stirring solution A, and keep the cont...

Embodiment 2

[0105] Example 2 The multifunctional TiO prepared by the present invention 2 Effect test of nano-coating on conversion efficiency of photovoltaic modules

[0106] 2.1 Light transmittance detection test

[0107] 2.1.1 Test material: multifunctional TiO prepared according to Example 1 2 Nano coatings, ultra-clear patterned glass for components, commercial TiO 2 self-cleaning products

[0108] 2.1.2 Test steps:

[0109] 1) Roughness test

[0110] 2) Light transmittance comparison test instrument GST3 air flotation spectrophotometer

[0111] 2.1.4 Results

[0112] 1) The surface roughness of the glass is reduced

[0113] Surface improvement after spraying see figure 2 . Such as figure 2 As shown, the roughness of the substrate (glass) surface before spraying is 200~300nm, using the multifunctional TiO prepared by the present invention 2 After the nano-coating is sprayed, the roughness is reduced to 40-60nm, thereby reducing the influence of diffuse reflection and incr...

Embodiment 3

[0136] Embodiment 3 Multifunctional TiO of the present invention 2 Photolysis Index Test of Nano Coatings

[0137] 3.1 Test method

[0138] South Germany TUV certification center for testing

[0139] Number: No.70.406.15.189.02-01

[0140] 3.2 Test material:

[0141] Multifunctional TiO prepared according to Example 1 2 Nano-coating, 3 sample components ultra-clear embossed glass

[0142] 3.3 Test procedure: according to JC / T2168-2013 "self-cleaning coated glass" standard, spray the multifunctional TiO prepared according to Example 1 2 The nano-coated photovoltaic module glass is subjected to methylene blue test to test the photolysis index. Six times of irradiation under 3.0±0.10mW / ㎡ of ultraviolet light, each lasting 20 minutes

[0143] 3.4 Results

[0144] According to the standard definition of JC / T2168-2013 "self-cleaning coated glass", the photolysis index represents the photocatalytic multifunctional TiO 2 Numerical values ​​of the photocatalytic properties of ...

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Abstract

The invention provides a preparation method for a multifunctional TiO2 nano-paint. The preparation method comprises the following steps: preparation of a TiO2 solution with butyl titanate as a titanium source, isopropanol as a solvent and diethanolamine as a hydrolysis inhibitor; and dispersion and surface modification of the TiO2 nano-solution: carrying out TiO2 surface modification on the obtained TiO2 solution with sodium silicate as a dispersing agent and silane as a coupling agent so as to obtain the multifunctional TiO2 nano-paint. The multifunctional TiO2 nano-paint prepared in the invention can be directly sprayed on the surface of a substrate at normal temperature and has good bonding action on the substrate; surface cleanness of a photovoltaic assembly is maintained mainly in virtue of super hydrophilicity and self-cleaning performance of a formed coating; and the photoelectric conversion rate of the photovoltaic assembly is improved.

Description

technical field [0001] The invention relates to a multifunctional TiO 2 Preparation method of nano coating, especially related to a multifunctional TiO with superhydrophilic and self-cleaning function for increasing photovoltaic power generation 2 Preparation method of nano coating. Background technique [0002] During the operation of a photovoltaic power station, the power generation of the power station is often affected by many factors, among which the cleanliness of the module surface will seriously affect the output efficiency of the module. If the spot effect is more serious, it may lead to component failure and reduce the service life, which generally does not exceed 20 years. In order to increase the power generation of the power station, the power station should not only use components with high photoelectric conversion rate of battery components, but also avoid component power loss caused by other factors. Therefore, in order to avoid the impact of dust on the ...

Claims

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Application Information

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IPC IPC(8): C09D1/00C09D5/16C01G23/053C03C17/23
CPCC01G23/053C03C17/23C09D1/00C09D5/1618
Inventor 赵志伟
Owner BEIJING LION TRUNK NEW MATERIAL TECH CO LTD
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