Here's some graphs of the transmission. It has higher impact resistance than acrylic and glass, and it can be cold-formed during installation. Although commonly used by high street opticians in prescription safety eyewear, CR39 only offers increased robustness conforming to EN 166S similar to that of toughened glass. UV transmitting acrylic sheet is transparent to UV light and provides the superior quality and clarity needed in these applications. UV stabilizers are added to polycarbonate to help protect the material from the effects of exposure to the Sun. No other plastic material can deliver this level of UV transparency. We offer Cut to Size plastics with Drilled holes, Radius corners and Polished edges online & a complete range of plastics fabrication services inhouse, so please get in touch if you're after something special Adding Items to Cart £ Price . Visible light transmission is the amount of visible light transmitted based on the D65 Illuminant scale where 100% transmission allows through 6500k … transmission (only around 4% loss for a 0.25mm film). Combining strength and impact resistance with high optical clarity and light transmission, this lightweight rooflight material is ideal for industrial, agricultural, horticultural, leisure and DIY applications which require its high performance characteristics. Pure and Clear . But less than ~300nm would be absorbed. … The benefits and drawbacks of polycarbonate roofing sheets. Makrolon® UV polycarbonate sheet is easily thermoformed, fabricated, and decorated. The benefits of polycarbonate roofing extend to its ease of maintenance, ability to withstand force from elements such as wind and rain, and their ability to block harmful UV rays, reducing temperatures and UV exposure in properties. Makrolon UV is produced with high optical quality and minimal distortion in clear, a range … 16mm Polycarbonate Sheet Light Transmission: 16mm Clear = 82%. Our Plastic Products. The sheet is lightweight, impact resistant and easy to install. Single-skin polycarbonate has around 94-96 per cent light transmission compared to 3mm glass having a value of 97-98 per cent; 4mm polycarbonate has a value of … Other colours reduce light transmission to certain extents – the darker the colour gets, the lower the percentage of light transmission. Also they all come with a ten year guarantee for your peace of mind. Makrolon® UV sheet is a transparent polycarbonate product with an advanced UV resistant technology that assures long lasting outdoor weathering performance in flat … In this study, the molecular weight of polycarbonate was seen to decrease during UV exposure, making it susceptible to embrittlement and surface erosion. approx 8.5% or 17%. All Sheets are UV protected on the uppermost side. Answer posted on 9 October 2017. Additionally, all polycarbonate sheets in our range are UV resistant. Yes, glass can be adapted to block UV rays by adding a special chemical coating or screen but polycarbonate doesn’t need any modification to keep your skin safe from harmful UV radiation. 16mm Bronze = 31%. Guaranteed for 10 years. If blocking UVA and UVB rays isn't a concern for your specific project, you can use UV transmitting plexiglass. Substantially more expensive. The high performance UV layer offers protection from some of the sun’s rays. Has a coextruded UV protection layer on one side. At Creative Mechanisms, we have used Polycarbonate in a number of applications across a range of industries. With impeccable clarity, excellent weatherability, and high light transmission, this plastic has no additives to block the transmission of UV light. While many UV protection. 16mm Opal = 51%. UV-A light (320-400 nm) and UV-B light (280-320 nm) are used in a variety of applications, from medical treatment to suntanning. Contact Details. But less than ~300nm would be absorbed. Qualities- Lightweight, Easy to Cut on Site, Excellent Rigidity, UV stable, Highly Weather Resistance, Excellent Fire Rating, ... As well as flat roof panels, we also have clear corrugated roof sheets in polycarbonate for optimum light transmission and visibility. It also protects the sheet against loss of strength and yellowing. Polycarbonate is an incredibly useful plastic for applications requiring transparency and high impact resistance. Makrolon® UV sheet is a transparent polycarbonate product with an advanced UV resistance technology that assures long lasting outdoor weathering performance in flat and curved glazing applications. This is why they are used in the construction of bulletproof police shields. Polycarbonate panels can withstand force and are virtually unbreakable. Because the ability of UV light to penetrate acrylic plastic is dependent on the chemical formulation, you may be able to find plastic sheets that will allow the UV-C to penetrate. Solar Light Company, Inc. can provide accurate spectral transmission analysis of materials in multiple spectra for any testing requirement including UV and VIS. Polycarbonate roofing sheets are available in a wide variety of colours. 4mm Twinwall Polycarbonate Sheeting. It refers to the amount of light a material allows through it. More bendable under normal temperatures (0-20°C) Goes yellow over time due to UV rays; Easier to work with A UV filter is extremely important, especially if you or your employees work outside. This system incorporates a holographic grating to ensure that the stray radiation level is very low (<0.01% T), ensuring that the light transmission reading near blocking levels is … Alternative Plastics Ltd Unit 1 Buckingham Close Bermuda Industrial Estate Nuneaton Warwickshire CV10 7JT Tel: 02476 641210 Fax: 02476 326156 Alternatively: E-mail Us Here. If you would like a more technical discussion on the transmission of light through acrylic plastics, please go to the Cole-Parmer website. All these qualities make polycarbonate a popular replacement for glass. Light Transmission of Plastic This document lists both Visible and UV light transmission characteristics. Interaction of UV Radiation and Plastics UV energy absorbed by plastics can excite photons, which then create free radicals. U Value for 16mm Polycarbonate Sheet = 2.4 w/m2K. SUNTUF maintains its light transmission for years and provides a comfortable and healthier environment. ... Other applications, including polycarbonate sheet, may have the anti-UV layer added as a special coating or a coextrusion for enhanced weathering resistance. A Lambda 35 is an ideal UV/Vis spectrometer for measuring the UVA and UVB light transmittance of materials. A primary visible effect of UV exposure is a chalky appearance of the plastic material. 10mm polycarbonate is co-extruded with an UV inhibiting layer for longer life. 10mm polycarbonate sheets are an excellent glazing material which are very resistant to damage. UV PROPERTIES OF PLASTICS: TRANSMISSION AND RESISTANCE Table 1: UV Radiation Types DESCRIPTION WAVELENGTH RANGE (nm) COMMON EFFECT UVA 320 - 400 skin tanning UVB 280 - 320 skin burning UVC 100 - 280 germicidal Degradation There are several obvious effects of UV light upon plastics. Our 16mm multiwall polycarbonate sheet combines high light transmission, good load bearing properties, good thermal insulation and excellent weather resistance. This is under the branded film and must be installed facing outside. UV resistance on polycarbonate formulation can be added to the resin or developed as a coating. It is a lighter alternative to glass and a natural UV filter, so it is often used in eyewear. Light transmission: 85%; Maximum Width: 2100mm ; Nominal Sheet Weight: 0.8 kg/m²; U-value: 3.9 W/m²°K; Mini Curve Radius: 600mm; 6mm Twinwall Polycarbonate Sheeting. A durable and reliable roofing solution 3mm Opal Polycarbonate Sheet with UV Protection On Both Sides with 50 Percent Light Transmission CODE:PALSUNPLUSO Trustpilot. Our polycarbonate sheets come in thicknesses of 4mm, 6mm, 10mm, 16mm, 25mm, 32mm and 35mm. … Available Services. At wavelengths above 400 nm, the transmission is constrained by the Fresnel losses which amount for ordinary glass (n=1.52) to about 2 or 4 times 4.2%, i.e. Almost all do. Has a coextruded UV protection layer on one side. Unlike polycarbonate, CR39 requires a UV coating to be added to protect eyes from the sun’s harmful rays. (Roughly 2 to 3 times) Used for more industrial applications; Bulletproof when thick enough. Graph 2: UV Light Transmission of Colorless ACRYLITE GP, ACRYLITE FF, ACRYLITE OP-1, ACRYLITE OP-2, ACRYLITE OP-3 and ACRYLITE OP-4 sheet (Approximation only – not a specification). Combining UV protection, impact and chemical resistance, light weight and high light transmission, Marlon FSX is ideal for architectural rooflights, vertical glazing and specialist glazing applications. Marlon CS Longlife corrugated polycarbonate sheet is engineered for use in rooflight and side-light applications. Acrylic Sheet; Block; Plastic Tube; Rod & Bar; Fabrication Aids; Glues, Polishes & Cleaners; Profiles & Slat Wall; Stock Shapes; Clearance Items; Search. The changes in optical properties were related back to the changes in the polymer microstructure and composition. Although ultraviolet (UV) radiation amounts to only 3% of the total radiation that reaches the earth, it is energetic enough to cause chemical reactions, weathering of polymers, fading of certain … Polycarbonate is designed in a way to protect the structure against the UV radiations of the sun. The polycarbonate roofing sheets have excellent UV protection. GPC, SEM, microscopy, light transmission and colour changes. 16mm Polycarbonate sheets offers greater strength and rigidity than 10mm Polycarbonate. This performance is backed by a 10-year comprehensive warranty against breakage, excessive yellowing, and loss of light transmission. There are also many applications for UV, including curing of inks on plastic substrates, and UVC radiation for sterilization of components. Quality sunglasses that block UV rays also consist of polycarbonate lenses, making them high impact resistant. Fortunately, Polyplastics and TOPAS Advanced Polymers provide a line of glass-clear, medical grade plastics with high UV transmission so that tests utilizing UVA, UVB, and with the right grade, even UVC down to 220nm can be carried out with confidence. UV light transmission is based on the nm range of UV light transmitted. This allows for larger spans than 10mm Polycarbonate. The only common material that does not block UV is CR-39, and most of that is treated with proton bombardment to block UV [1] . Polycarbonate: Impact/chip resistance is about 30 times more resistant than glass; More likely to scratch. Radiation from the Sun, especially in the UV portion of the spectrum, degrades the properties of polycarbonate. Figure 2: Transmission curves of two thin glass plates without optical grease (red line) and with optical grease in between (green line). Paul A. Charp, PhD. 10mm twin-wall is not generally chosen for its insulation properties. We stock polycarbonate sheets in the colours clear, opal white (28% light transmission), ... is its weight: a polycarbonate sheet weighs half as much as a glass sheet. This is under … Palram’s corrugated polycarbonate roofing facilitates economical construction costs, easy and simple installation, provides a wide range of light transmission values, and is suitable for retrofitted roofs as well as newly construction ones. Although UV filtering acrylic is more popular than UV transmitting and has more applications, UV transmitting acrylic is important in places where the UV rays are required. It blocks virtually 100% of UV rays so that you can rest (or swim) easy knowing that you and your loved ones are protected from cancer-causing radiation. UV of ~350-400nm Will pass through most plastics. Polycarbonate is highly transparent to visible light, with better light transmission than many kinds of glass.
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