Qingdao Hengke Fine Chemicals Co.,Ltd
Qingdao Hengke Fine Chemicals Co.,Ltd is an merging sunrise company which self-support with a collection of import&export, research, development, production and marketing.
With the depletion of fossil fuels, the exploitation and utilization of the inexhaustible solar energy has been strengthened.
The solar panel, an important device that converts sunlight into electrical energy, generally requires a design service life of more than 25 years. To meet this requirement, the quality of the panel components must be strictly controlled. As the armor of solar cells, the solar back-sheet must have excellent insulating, weather-resistance and waterproofing properties.
Back-sheet Laminating Adhesives
A single material cannot meet such comprehensive requirements. Therefore, the common three-layer back-sheet is composed of fluorine film, PET film and fluorine film, with adhesive used to bond the layers.
Long exposed to outdoor climate, the back-sheet laminating adhesive needs to withstand various conditions. Thus, the adhesive must show excellent low-temperature resistance and chemical stability. Besides, the back-sheet needs to be treated with high temperature in the production process, requiring that the adhesive should feature excellent higher temperature resistance.
Currently, the two-component polyurethane adhesive, made up of resin and hardener, is one of the most widely used back-sheet laminating adhesives. The PU-based back-sheet laminating adhesive, made from HDI hardener, can effectively prolong the service life of the solar back-sheet. It also performances well under extreme weather.