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Corrosion-resistant coating for photovoltaic power station box and preparation method thereof

A photovoltaic power station, corrosion-resistant technology, applied in the field of coatings, can solve the problems of reducing the adhesion between coatings and metal substrates, damage to metal substrates, etc., achieve excellent adhesion, fast curing speed, and improve corrosion resistance.

Active Publication Date: 2022-07-12
CHINALAND SOLAR ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This curing method is easy to cause damage to the metal substrate
The water-based fluorine-containing coatings that have appeared on the market in recent years have the advantages of environmental protection and low-temperature curing. However, the weather resistance of the fluorine-containing coatings is generally achieved through the fluorine-containing side chains, and the introduction of fluorine-containing side chains is often Reduces adhesion between coating and metal substrate

Method used

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  • Corrosion-resistant coating for photovoltaic power station box and preparation method thereof
  • Corrosion-resistant coating for photovoltaic power station box and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Preparation of Epoxidized Branched Fluorides:

[0022] Step A, add 120 mL of acetic acid to the four-necked flask with condensation device, thermometer and stirring device, then add 0.011 mol [3-(trimethoxysilyl) propyl] succinic anhydride, be warming up to reflux, and in a stirring state 0.01 mol of 4-aminobutyric acid was added in batches, and after the addition was complete, the reflux reaction was continued for 10 hours, and then the temperature was reduced to 30° C. to remove ethanol by rotary evaporation under reduced pressure to obtain a siloxane-containing dicarboxylic acid;

[0023] Step B: After mixing 0.41 mol of siloxane-containing dicarboxylic acid and 0.1 mol of pentaerythritol, add 4.44 g of p-toluenesulfonic acid, then heat to 70 ° C, stir and react for 4 h, then reduce to 35 ° C for vacuum and rotary evaporation to obtain branch;

[0024] Step C, after mixing 153 g of branched product and 92 g of bisphenol AF uniformly, adding 6.12 g of p-toluenesulfon...

Embodiment 2

[0027] Preparation of Epoxidized Branched Fluorides:

[0028] Step A, add 160mL acetic acid to the four-necked flask with condensation device, thermometer and stirring device, then add 0.013mol [3-(trimethoxysilyl)propyl] succinic anhydride, be warming up to reflux, and in a stirring state 0.01 mol of 4-aminobutyric acid was added in batches, and after the addition was complete, the reflux reaction was continued for 10 hours, and then the temperature was reduced to 30° C. to remove ethanol by rotary evaporation under reduced pressure to obtain a siloxane-containing dicarboxylic acid;

[0029] Step B: After mixing 0.42 mol of siloxane-containing dicarboxylic acid and 0.1 mol of pentaerythritol, add 7.60 g of p-toluenesulfonic acid, then heat to 70° C., stir and react for 4 hours, and then reduce to 35° C. under reduced pressure for rotary evaporation to obtain branch;

[0030] Step C, after mixing 153 g of branched product and 100 g of bisphenol AF uniformly, adding 7.65 g of ...

Embodiment 3

[0033] A corrosion-resistant coating for photovoltaic power station boxes is prepared by the following steps:

[0034] The first step, prepare the following raw materials in parts by weight of component A: 75 parts of epoxidized branched fluorine-containing compound, 15 parts of water-based polyurethane resin; component B is diethylenetriamine, and the mass ratio of component A and component B is is 100: 0.8;

[0035] The second step is to dissolve the water-based polyurethane resin in water and stir evenly, then add the epoxidized branched fluorine-containing compound and stir evenly at room temperature, and finally add diethylenetriamine to obtain a corrosion-resistant coating for photovoltaic power station boxes.

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Abstract

The invention relates to a corrosion-resistant coating for photovoltaic power station boxes and a preparation method thereof, belonging to the technical field of coatings. The anti-corrosion paint for photovoltaic power station box includes A component and B component, and the A component includes the following raw materials: epoxidized branched fluorine-containing compound, water-based polyurethane resin and water. The invention utilizes the good compatibility between the epoxidized branched fluorine-containing compound and the polyurethane and its branched structure, which promotes the formation of the interpenetrating network structure between the film-forming substances and improves the corrosion resistance of the coating. And the film-forming substance formed by the above two has a triple curing mechanism of light curing, moisture absorption curing, and thermal curing; at the same time, the hydrolysis of the ester group, amide group, hydroxyl group and siloxane chain contained in the epoxidized branched fluorine-containing compound produces silicon. Oxygen bond, which greatly overcomes the decrease in adhesion caused by fluorine-containing side chains, and at the same time cooperates with the excellent adhesion of water-based polyurethane resin, so that the coating still has excellent adhesion.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a corrosion-resistant coating for photovoltaic power station boxes and a preparation method thereof. Background technique [0002] Photovoltaic power station box is used to protect photovoltaic modules, inverters, photovoltaic power distribution boxes, electricity meters, power grids and other photovoltaic power station equipment. The shell is generally made of metal plates. In order to reduce the corrosion problem of metal plates, metal Anti-corrosion treatment of the board. The existing anti-corrosion treatment methods include the following methods: first, adding alloy elements such as copper and chromium to the metal raw materials; second, metal coating (such as spraying aluminum-zinc and other alloy coatings to improve the corrosion resistance of the rail); third, Use sacrificial protection method to improve the corrosion resistance of rails; Fourth, coat a laye...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D175/04C09D5/08
CPCY02E10/50
Inventor 王可胜郭万东郭天宇侯俊梁发宏袁艺琴柏爱玉张龙
Owner CHINALAND SOLAR ENERGY