Polyurethane edge-sealed rock wool board for photovoltaic

Are polyisobutylene edge seals UV resistant?

Polyisobutylene edge seals are pigmented black for UV protection, and the material by itself is resistant to environmental degradation [170,172, 173]. However, delamination can cause failure of the edge seal, especially in the presence of an external stress such as edge pinch. ... ...

Why do photovoltaic devices have edge seals?

Because of the sensitivity of some photovoltaic devices to moisture-induced corrosion, they are packaged using impermeable front- and back-sheets along with an edge seal to prevent moisture ingress. Evaluation of edge seal materials can be difficult because of the low permeation rates involved and/or non-Fickian behavior.

Are edge sealants based on polyisobutylene?

Most edge sealants are based on desiccant-filled polyisobutylene . ... ... Moreover, edge seals are sensitive to glass edge pinching and they may prevent excess encapsulant from escaping a module during processing, leading to quality issues.

What is a photovoltaic edge-seal?

These edge-seal materials are often made of a polyisobutylene resin filled with desiccant, which dramatically ... [Show full abstract] Photovoltaic devices are often sensitive to moisture and must be packaged in such a way as to limit moisture ingress for 25 years or more.

What are edge seal materials?

Edge seal materials with lowdiffusivity and dessicant are being investigated by several manufacturers (M. Kempe, Dameron, Moricone, & Reese, 2010). These materials are capable of preventing moisture ingress over the lifetime of a module. ...

Why are polyisobutylene edge seals important?

Moreover, edge seals are sensitive to glass edge pinching and they may prevent excess encapsulant from escaping a module during processing, leading to quality issues. Polyisobutylene edge seals are pigmented black for UV protection, and the material by itself is resistant to environmental degradation [170,172, 173].