Photocuring rapid repair coating and application thereof

Abstract

The invention discloses a photocuring rapid repair coating and application thereof, and aims to overcome the defects that an existing photocuring repair coating only achieves surface drying within a short time, the hardness and the performance of a formed repair coating layer cannot meet the use requirements of a solar cell module, and the repair coating layer needs to stand for a long time before being completely cured. The photocuring rapid repair coating disclosed by the invention comprises the following components in percentage by mass 30%-60% of light-cured resin, 20%-45% of an active diluent, 10%-25% of a filler, 1%-10% of a photoinitiator and 1%-10% of an auxiliary agent. The photocuring rapid repair coating is simple in curing method, can be completely cured in a short time to form a repair coating with high hardness and weather resistance, can improve the repair efficiency of the solar cell module and prolong the service life of the solar cell module, has an application value and is worthy of popularization and application.

Description

technical field [0001] The invention specifically relates to a light-curing quick repair paint and its application. Background technique [0002] With the depletion of non-renewable energy such as coal and oil, people's demand for clean energy is increasing, and solar energy is being used more and more widely as a clean energy. However, with the operation of the power station, metal structural parts such as solar cell backplanes and brackets have been eroded by various adverse environments such as water vapor, acid rain, salt spray, wind and sand, and ultraviolet rays for a long time. rust. How to repair these bad defects without affecting the service life of solar cell components is an urgent problem to be solved at present. [0003] At present, there are two main repair schemes for solar cell modules. The first one uses pressure-sensitive adhesive as an adhesive to repair the back sheet, which is covered and pasted on the bad defect of the solar cell back sheet to achiev...

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Problems solved by technology

[0003] At present, there are two main repair schemes for solar cell modules. The first one uses pressure-sensitive adhesive as an adhesive to repair the back sheet, which is covered and pasted on the bad defect of the solar cell back sheet to achieve repair. Inconvenient, high cost, and not suitable for the maintenance of metal structural parts; the second is to spray a layer of heat-cured fluorocarbon resin coating on the defective parts of the solar backplane to achieve repair. Convenient, but most sprayed thermosetting coatings need 1-7 days of drying time, during which the coating is susceptible to secondary damage and defects, so it has not been widely used

[0004] CN107779015A discloses a kind of photovoltaic backboard repair coating and repair method and application, adopts fluorocarbon resin, organosilicon prepolymer, epoxy resin, inorganic filler, the repair coating prepared by auxiliary agent, needs to carry out drying 60s with blower, from its It can be seen from the composition that the coating is a thermosetting coating. The coating is only surface-dry after drying with a hair dryer for 60 seconds. It will take a long time to dry at room temperature to ensure that the coating is fully cured. During the subsequent drying process, it is vulnerable to external adverse environments such as rainwater and wind. Erosion, causing coating damage and affecting the repair effect

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