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Self-cleaning nano-coating, inorganic transparent coating layer and self-cleaning product

A nano-coating and transparent coating technology, applied in coatings, conductive coatings, etc., can solve problems such as power generation efficiency decline, work response time lag, and power generation loss of photovoltaic power plants.

Inactive Publication Date: 2018-01-30
ZHANGJIAGANG ALIEN NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Their disadvantages are that they "tolerate" dirt on the surface of the product for a period of time, and the self-cleaning function can only be turned on after external conditions such as water or light, and its working response has a serious time lag.
Studies have shown that if an average layer of 4 grams of dust falls on the surface of photovoltaic cells, it will reduce its power generation efficiency by about 40%. The hysteresis of surface cleaning will undoubtedly cause a huge loss of power generation in photovoltaic power plants. Instant self-cleaning coatings that keep their surfaces clean in time

Method used

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  • Self-cleaning nano-coating, inorganic transparent coating layer and self-cleaning product
  • Self-cleaning nano-coating, inorganic transparent coating layer and self-cleaning product
  • Self-cleaning nano-coating, inorganic transparent coating layer and self-cleaning product

Examples

Experimental program
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Effect test

Embodiment 1

[0032] ⑴ Preparation of nano-conductive SnO 2 . 25 parts by weight of tin tetrachloride hydrate (SnCl 4 ·5H 2 O) be dissolved in 100 weight parts deionized water, drop the 25wt% concentrated ammonia water of 30 weight parts, tin ion is completely converted into Sn(OH) 4 Precipitate, wash with water 5 times to remove chloride ions, etc., then disperse into 100 parts by weight of deionized water and adjust the pH to 10.5 with ammonia water, and quickly add 1.2 parts by weight of sodium peroxide Na 2 o 2 , all transferred to the hydrothermal reaction kettle, after hydrothermal reaction for 5 hours, cool down to room temperature, wash 5 times with deionized water with the help of nanofiltration membrane to remove residual impurities such as nano-ions, transfer the off-white substance on the surface of the filter to the container and add A small amount of water, you get SnO 2 An aqueous dispersion of conductive nanoparticles with a solid content of 9.8 g / ml, and SnO 2 The par...

Embodiment 2

[0039] ⑴ Preparation of nano-conductive SnO 2 , SnO with a solid content of 9.8g / ml 2 Aqueous dispersion, SnO 2 The particle size is about 2nm, the same as in Example 1.

[0040] ⑵Purchase hard film a, WO with a solid content of 5wt% 3 Methanol dispersion, WO 3 The particle size is less than 100 nanometers.

[0041] Purchase hard coat agent b, an aqueous dispersion of platinum particles with a solid content of 1 wt%, and a Pt particle size of less than 100 nanometers.

[0042] ⑶ buy adhesive A, solid content is 20wt% SiO 2 Methanol dispersion, SiO 2 The particle size is less than 10 nanometers.

[0043] Binder B was purchased, amorphous SiO with a solid content of 1.5 wt% 2 Aqueous dispersion, SiO 2 The particle size is less than 2 nanometers.

[0044] ⑷ Preparation of self-cleaning nano-coatings. Mix an appropriate amount of the above-mentioned nano-conductive SnO 2 , tungsten oxide hard coat agent, inorganic binder, deionized water and methanol, so that the compo...

Embodiment 3

[0048] ⑴ Self-made nano-conductive FTO. 10 parts by weight of tin tetrachloride (SnCl 4 ·5H 2 O) the hydrate is dissolved in 100 parts by weight of deionized water, and 30 parts by weight of 25wt% concentrated ammonia water is added dropwise, so that tin ions are completely converted into Sn(OH) 4 Precipitate, wash with water 5 times to remove chloride ions, transfer the precipitate to the hydrothermal reaction kettle, add 0.1 parts by weight of hydrofluoric acid (HF) and 20 parts by weight of deionized water, and then heat the hydrothermal reaction kettle to 180 °C And keep at constant temperature for 15 hours and then cool to room temperature. After separating the turbid liquid in the reaction kettle, a colorless precipitate was obtained, indicating that fluoride ions had been doped into SnO 2 Lattice-generated conductive nano-FTO (fluorine-doped tin oxide, F-SnO 2 ), wash with deionized water 5 times to remove impurities by means of nanofiltration membrane, transfer the...

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Abstract

The invention discloses a self-cleaning nano-coating, an inorganic transparent coating layer and a self-cleaning product. The self-cleaning nano-coating containing a nano conductive material, an inorganic film hardening agent, an inorganic binding agent and a hydrophilic solvent is prepared according to a ratio; the surface of an object is coated with the self-cleaning nano-coating to form the hydrophilic inorganic transparent coating layer; the coating layer has specific static-conducting and electrostatic dissipation functions, so that static electricity generated when the surface of the object is rubbed with flowing air can be eliminated in time; in the microcosmic aspect, the surface of the object loses an attraction force on dirt including ash particles and the like in a surrounding environment, and the dirt is difficultly attached on the surface of the object, so that the in-time self-cleaning effect of keeping the surface of the object clean at any time is realized; the self-cleaning product is remarkably different from traditional self-cleaning products including super-hydrophobic products, photocatalysts and the like which can start to work under external conditions including rainwater, light illumination and the like.

Description

technical field [0001] The invention relates to a self-cleaning nano coating, an inorganic transparent coating and a self-cleaning product, belonging to the field of nano coatings. Background technique [0002] In order to clean the dust, oil stains and other dirt on the surfaces of various objects such as vehicles, walls, glass, panels, etc., people currently use four methods: manual scrubbing, water spray washing, robot scrubbing, and self-cleaning surface preparation. Self-cleaning technology has attracted much attention because it can significantly reduce the number of operations and maintenance costs. Self-cleaning coatings are the most important way to prepare self-cleaning surfaces of objects. At present, they have been developed into categories such as superhydrophobic self-cleaning coatings, photocatalyst self-cleaning coatings and silica superhydrophilic self-cleaning coatings. [0003] Patents for superhydrophobic self-cleaning coatings such as CN201210326808, CN...

Claims

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Application Information

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IPC IPC(8): C09D1/00C09D5/24C09D7/61
Inventor 张麒
Owner ZHANGJIAGANG ALIEN NEW MATERIAL TECH CO LTD
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