Photovoltaic module comprising insulation layer with silane groups
View Patent ↗The present invention relates to a photovoltaic module comprising a solar cell element and an insulation material laminated to at least one side of the solar cell element wherein the insulation material comprises an olefin copolymer which comprises silane group-containing monomer units, to a process for the production of such a photovoltaic module, and to the use of an olefin copolymer which comprises silane group-containing monomer units for the production of an insulation layer of a photovoltaic module.
1. A photovoltaic module comprising a solar cell element and an insulation material laminated to at least one side of the solar cell element wherein the insulation material is formed from a polymeric material consisting of an olefin copolymer obtained by copolymerization which comprises from 0.5 to 5 wt. % of silane group-containing monomer units, main olefin monomer units, and from 10 to 45 wt % of polar comonomer units, the polar comonomer units being selected from acrylates and alkylacrylates.
2. Photovoltaic module according to claim 1 , wherein the silane groups are at least partly crosslinked.
3. Photovoltaic module according to claim 1 , wherein the olefin copolymer is an ethylene copolymer.
4. Photovoltaic module according to claim 1 , wherein the amount of the polar comonomer units in the olefin copolymer is from 20 to 40 wt. %.
5. The photovoltaic module according to claim 1 , further comprising a protective back cover consisting of glass, metal, or a single-layer sheet of a thermoplastic resin.
6. The photovoltaic module according to claim 5 , wherein the protective back cover consists of glass.
7. The photovoltaic module according to claim 5 , wherein the protective back cover consists of metal.
8. The photovoltaic module according to claim 5 , wherein the protective back cover consists of the single-layer sheet.
9. Process for the production of a photovoltaic module according to claim 1 , which comprises laminating a sheet of the insulation material to the solar cell element.