Pen single-side coated backboard and preparation method thereof

Abstract

The invention discloses a PEN one-side coated back plate and a manufacturing method of the PEN one-side coated back plate. The PEN one-side coated back plate comprises a fluorocarbon coating, a PEN material layer, a polyurethane dry glue layer and a PE film. One side of the PEN material layer and the PE film are bonded together through the polyurethane dry glue layer. The other side of the PEN material layer and the fluorocarbon coating are directly bonded. The manufacturing method includes the steps of processing the two opposite side faces of the PEN material layer, coating one side face of the PEN material layer with the fluorocarbon coating, coating the other side face of the PEN material layer with polyurethane glue, conducting baking, compositing the PE film on the side face, provided with the polyurethane dry glue layer, of the PEN material layer through hot pressing after the polyurethane dry glue layer is baked and solidified, and obtaining the PEN one-side coated back plate. The manufacturing method is easy and convenient to implement; PEN material is directly coated with the fluorocarbon coating, machining is more convenient, efficiency is high, and cost is lower. According to the PEN one-side coated back plate manufactured through the method, PEN material is used, the hydrolytic resistance capacity and mechanical strength of the solar back plate are greatly improved, and it can be ensured that the service life of a solar generation assembly is 25 years.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a PEN single-sided coated back sheet and a preparation method thereof. Background technique [0002] The solar insulating back sheet is generally composed of a five-layer structure. The reinforcement layer and the outer weather-resistant layer and the inner weather-resistant layer are respectively compounded on both sides of the reinforcement layer through the bonding layer. The reinforcement layer and the two weather-resistant layers are usually connected by an adhesive. . Usually, the outer layer is PVDF material with a thickness of 25um, the middle reinforcement layer is PET with a thickness of 250um, the thickness of the inner layer is 50-60um, and the adhesive layer is a polyurethane adhesive with a thickness of 10um. [0003] At present, the solar back sheet has the following important problems: First, in the production of PVDF, the film itself will inevitably have por...

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Problems solved by technology

[0004] The main technical problem to be solved by the present invention is to provide a PEN single-sided coated backboard and its preparation method, which can solve the problem of hydrolytic damage of the insulating backboard caused by the low water resistance and water vapor performance of PET in the prior art and the relationship between the reinforcing layer and the outer surface. Adhesives are used between weathering layers to increase costs and other issues

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