What is epoxy encapsulation material?-Iota

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News > Dynamic industry > What is epoxy encapsulation material?

What is epoxy encapsulation material?

Solar cells generally have to be packaged into a flat plate structure by glue sealing, lamination, etc. before being put into use. Among them, the lamination packaging method is the most common.

The main materials used for vacuum lamination packaging of solar cells are epoxy resin, silicone resin, glass, EVA, Tedlar or Tedlar composite film, such as TPT (TPE), connecting strips, aluminum frames, etc. The characteristics of packaging materials have an important impact on the performance and service life of solar cell modules.

Epoxy resin is a relatively common adhesive and its product forms are also diverse. It can be made into single component or two-component, or into powdered resin.

The epoxy resin adhesive used in solar cells is a two-component liquid that is prepared and used immediately. By changing the curing agent, accelerator, etc., the formula of epoxy resin can be varied to have a variety of properties to meet various requirements. This is one of the advantages of epoxy resin packaging materials.

Epoxy resin can obtain higher thermal conductivity and insulation through appropriate addition and modification, so it can be used in electronic devices. Epoxy resin has strong bonding force , and it will also become brittle due to aging during use, which is related to the low toughness of epoxy resin and the structural changes during aging. Various modifications to epoxy resin can improve its aging resistance to a certain extent.

Epoxy resin encapsulation of solar cell modules has a simple process and low material cost, and is widely used in the packaging of small modules.

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