Weather-resistant and high-barrier solar cell back sheet and preparation method thereof

Abstract

The invention discloses a weatherproof high-barrier solar cell backboard, which comprises a first weatherproof layer, a core layer and a second weatherproof layer sequentially from top to bottom. Thefirst weatherproof layer and the core layer, the core layer and the second weatherproof layer are all bonded by laminating through bonding layers, the first weatherproof layer and the second weatherproof layer are each independently formed by tetramethyl piperidine terminated poly2,3,5,6-tetrafluoroterephthalic acid 1,8-naphthalene dimethanol ester; the core layer is formed of a blend of nylon MXD6 and PET; the bonding layer is formed of a triazole tetramethylpiperidine co-modified epoxy resin. The invention also discloses a preparation method of the weatherproof high-barrier solar cell backboard. The weatherproof high-barrier solar cell backboard disclosed by the invention has more excellent weathering-resistance and high-barrier property, and other comprehensive properties are better.

Description

Technical field [0001] The invention relates to the technical field of solar cell manufacturing, in particular to a weather-resistant high-barrier solar cell back sheet and a preparation method thereof. Background technique [0002] As a green alternative to traditional electricity production methods, photovoltaic solar cells are used to generate electricity from solar energy. Photovoltaic solar cells are assembled from various semiconductor component systems, so they must be protected to reduce environmental effects such as the influence and damage of moisture, oxygen and ultraviolet rays. Photovoltaic solar cells are generally made of glass, silicon wafers, EVA, and backsheet materials by hot pressing. The backplane is located at the outermost layer on the back of the solar cell. Its function is to ensure that the solar cell operates in a closed condition, reduce environmental impact, and extend the service life of the solar cell. It is a very important part of the solar cell....

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the defects in the prior art, the present invention provides a weather-resistant high-barrier solar cell backsheet and its preparation method. The preparation method is simple and easy, the raw materials are easy to obtain, the reaction conditions are mild, the dependence on equipment is not high, and it is suitable for scale The weather-resistant high-barrier solar cell backsheet prepared by this preparation method overcomes the more or less expensive, complex production process, low coating curing temperature, poor weather resistance, and The surface free energy is very low, the bonding performance with other materials is poor, the interlayer peel strength is poor, the electrical insulation is low, the mechanical properties and barrier properties need to be further improved, and it has more excellent weather resistance and high barrier properties. Others Overall performance is also better