| abstract |
The invention discloses a kind of extrusion type backboard for photovoltaic cell, including upper epidermis, sandwich layer and layer；Wherein, the upper epidermis is made of polyamide, filler, fire retardant, additive；Sandwich layer is made of polyamide, filler, fire retardant, the additive that acrylic resin and grafted polyethylene are modified；Layer is made of polyamide, fire retardant, coupling agent, additive；Fire retardant is made of surface-treated nano grade inorganic fire retardant and red phosphorus；Nano grade inorganic fire retardant is selected from the aluminium hydroxide and/or magnesium hydroxide of 10 ~ 100nm；Used surface conditioning agent is the ethenyl cage model polysilsesquioxane of 1 ~ 5nm.The flame retardant effect of the extrusion type backboard of the present invention is good, and A grades are reached after combustion testing；It can also ensure that fire retardant on the mechanical property of the extrusion type backboard, ageing-resistant performance, block-water performance, insulation performance etc. without influence. |