I think polyethylene is used as a nuclear reactor shielding material
But it breaks down under UV light. UV inhibitor can be mixed before the film is extruded, but it doesn't protect the film, it just blocks UV.
Space/Science » in reply to Plastic Spaceships or polyethylene-based radiation shielding
But it breaks down under UV light. UV inhibitor can be mixed before the film is extruded, but it doesn't protect the film, it just blocks UV.