Other Materials Inches/Inch/F Acrylic Sheet. Acrylic sheet is subject to greater dimensional change, due to thermal expansion and contraction, than other materials with which it is used in construction. Allowances must be made for these changes in the construction and fabrication of products for example, the expansion joints in cement sidewalks and on steel bridges. What about Thermal Expansion & Contraction of Plexiglas®?Īll materials expand and contract to a greater or lesser degree due to changes in temperature and humidity. Ask your Emco Plastics salesperson for information on all of these plastic solutions. They have their respective qualities that make this an acceptable trade-off. Witness the protective canopies and bubbles in the World War II bombers- they are still clear after 50 years in the sun! There are three other clear plastics that do yellow in the sun and get confused with acrylic- Styrene, PETG, and Polycarbonate. American-made acrylic does NOT yellow in the sunlight. Acrylic (Plexiglas®, Lucite®, and Acrylite®) comes from natural gas and is completely inert when in solid form.
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Many children’s toys are made from PE and get brittle and crack when left outside. Some plastics, like polyethylene (PE) milk jugs, degrade quickly in the sun – in a matter of months. Sunlight, especially ultraviolet radiation, has a disastrous effect on most plastics. All plastics come from petroleum and natural gas. Since the beginning of the creation of plastics, many myths have been perpetuated about the longevity of plastics, especially outside in the elements. Does acrylic (Plexiglas® and Lucite®) yellow in the sun? If you need an acrylic product that resists scratching, then ask us about our Lucite® SAR® abrasion-resistant acrylic sheet. Glass cleaning spray and other such products contain ammonia that will cause hazing or fine scratching and eventual yellowing of the Plexiglas® sheet. Of course, you’ll need to wash the Plexiglas® with the proper cleaning solutions like our Novus® brand polish or Brillianze®, and to also be careful to never use such products as commercial brand “glass cleaning” sprays. This means that with proper maintenance of the Plexiglas® acrylic sheet, it should last 10 years or more before it ever yellows. Also, should I be concerned about scratching?Īll of the acrylic sheet Emco Plastics sells is manufactured with plenty of Ultra-violet stabilizer (UV) protection. I'm worried that Plexiglas® sheet is going to yellow on me after a few years. A spray coating is available if non-conductivity is needed. No, standard acrylic is a conductive material.
What are the benefits of acrylic over glass?Īcrylic is stronger, more impact resistant, lighter in weight, won’t shatter, is easier to fabricate, and can be easily formed. Polycarbonate is strongest, followed by PETG/PET, impact modified acrylic sheet, then general-purpose acrylic sheet. How does acrylic compare to other plastics in strength? 250″ thickness of acrylic is 9 to 10 times more impact resistant than wire or other glasses.
125″ thickness of acrylic is 2 to 3 times more impact resistant than double strength window glass, 4 to 5 times more impact resistant than wire glass or other glasses. How does acrylic (strength-wise) compare to glass?Ī.
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