UV light: If the framed item is displayed in an area with artificial UV light sources, choosing a glazing material that offers a high level of UV protection may be important. Acrylic is generally a good choice in these situations, as it offers a higher level of UV protection than glass. Using acrylic glazing can help to protect the framed item
Plexiglass filters out most UV rays smaller than 300nm (some Plexiglass is treated to filter all the way to 400nm), UVB rays range from 280nm to 315nm. Can UVC pass through plastic? This Stanford University source reveals that short wave UV (UVC) cannot pass through most plastics or ordinary glass.
UV Filtering Acrylic. UV Filtering Acrylic Sheet (Polymethyl-Methacrylate or PMMA) is an amorphous thermoplastic which is optically transparent, unaffected by moisture and offers a high strength-to-weight ratio. Common trade names of acrylic include Plexiglas®, Lucite®, and Acrylite®.
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Fortunately, the higher energetic part of UV-B; 280 – 295 nm, is filtered by the stratosphere and does not reach the earth’s surface, UV-A (315 – 400 nm), has energy between 389 and 300 KJ mol-1 and is less harmful for organic materials than UV-B. Visible (400 – 760 nm). and infrared (760 – 2500nm.)
Common building codes require PEX to be at least 18 inches away from water heaters to protect the plastic piping from melting. It’s important to protect your PEX with pipe insulation, abrasion clips, or enclosed in a larger pipe. This will stop any friction from happening which, over the years, can cause holes in the PEX.
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does plexiglass filter uv light
