Leaded Acrylic
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Uses for Leaded Acrylic:Mobile Barriers Modular Control Booths Windowpanes General Data: IntroductionCLEAR-Pb Lead-Plastic is a lead-impregnated, transparent, plastic sheet that contains 30% lead by weight. It combines superb light transmission with effective radiation shielding. Shatter resistance lends to its ease of handling and use in large continuous panes. It can be cut, drilled or machined using standard plastic-handling techniques. CLEAR-Pb Lead- Plastic provides complete radiation protection with unmatched design flexibility. Applications CLEAR-Pb Lead-Plastic modular barriers and window panes provide just the degree of radiation protection needed, together with distortion free panoramic viewing of the patient and equipment. It can be fabricated into large continuous window panes-up to 6 x 8 feet (even larger on special request). Available from a wide range of sizes and choices of lead equivalences from 0.3 to 3.0 mm. The appearance of any imaging room will be enhanced with the addition of these modern, decorator-like modules. CLEAR-Pb opaque x-ray shielding panels have a honeycomb formaldehyde free inner wall construction that is sandwiched between a lead-lined vinyl laminate. These very strong, yet lightweight panels are only 1.5 inch thick, presenting a space saving, attractive installation. Easy to handle, they allow for fast, economic, on-site assembly and installation and can be moved or changed without expensive labor or repairs should the need arise.
Installation The contractor furnishes all labor, services, and equipment for the proper installation and the complete performance of CLEAR-Pb Lead-Plastic as shown and specified. Materials supplied are subject to the terms and conditions of the contract documents. An instruction manual is available from Cardinal Health, Radiation Management Services. Handling Both sides of each CLEAR-Pb Lead-Plastic panels are protected by masking paper. Do not remove this paper until the panel has been mounted and is in final position. Rolling the paper edges enough to accommodate the hardware thickness is recommended prior to the final position. Unpack the material carefully. If crated, remove the crate lid and one side. If being handled by fork lifts, particular care is needed to prevent chipping or scratching. Use of a pallet is recommended. To move always LIFT IT, NEVER SLIDE IT. Handling Mounting or Framing
Cutting CLEAR-Pb Lead-Plastic is best cut with a circular saw, either a bench or overhead model. For long blade life, use a tungsten-carbide-toothed blade. A blade designed for cutting plywood (or any other fine-toothed blade) will give a reasonably smooth cut. A lower cutting (feed) speed also promotes a smoother cut. The blade of the bench saw should protrude 5% to 10% of its diameter above the upper surface of the CLEAR-Pb. If chipping occurs on the upper surface, raise the blade, if on the lower surface, lower the blade (reverse for an overhead saw). Hazard Warning - Dust Treatment: When cut, lead-containing dust may be released which may be poisonous if inhaled or ingested in large quantities; or in small quantities over time. A dust mask should be used when cutting. If much cutting is planned, use a ventilation system that draws air and dust from the site of the cutting tool, away from the operator and into a filling system. Drilling A drill press or hand-held drill can be used as follows: Standard drilling conditions Point angle: 125° to 140° Relief angle: 15° to 20° Drill speed: 100 to 500 RPM Clamp the material for drilling, backing it with wood scrap. Reduce the RPM and feed speed when the hole diameter and depth increase. If cracking occurs, decrease the feed speed or increase the tip angle. If necessary, cool with air or water, water spray should be stopped after 0.5 hour to prevent excessive absorption. Larger holes can be made with a hole saw. MaintenanceStorage Always store the CLEAR-Pb panels horizontally, never vertically, or inclined. The storage base should be a flat, smooth surface (such as a plywood sheet) and be larger than the panel. Panels should be stacked no higher than 1 foot, with corrugated cardboard sheets placed between them. Avoid water splash, humidity over 80% RH, or temperatures over 120. Cleaning MarShield Lead-Plastic panels and windows require the same cleaning techniques used on conventional plastic sheets. Cleaning, rinsing and drying with a soft cloth and water should remove normal dirt and smudges. Avoid products containing ammonia as this will "cloud" the CLEAR-Pb and void your warranty. Removing Scratches To remove fine scratches, haziness and abrasions from lead acrylic surfaces, we recommend the use of Plastic Polish. Follow the directions on the bottle supplied. In general, all surface dust should be removed with a soft cloth. Shake the polish well, and apply the polish in a gentle circular motion until dry. Then buff with a clean dry cloth, lint free. For deeper scratches, repeat polishing and buffing procedure a number of times Technical Services Contact MarShield sales department for assistance with selecting the correct CLEAR-Pb Lead-Plastic components. MarShield will also help prepare recommendations for shielding applications. CLEAR-Pb is a registered trademark of Cardinal Health, Inc. or one of its subsidiaries. © Copyright 2004 Cardinal Health, Inc. or one of its subsidiaries. All rights reserved. CLEARPb-spec-ds rev 2 09 aug 04 Specifications are subject to change without notice. Ordering When ordering a MarShield Leaded X-Ray Glass or Acrylic it is critical that all necessary information be supplied. MarShield cannot be held responsible for insufficient or missing information. It is up to the purchaser to ensure that all necessary information be at time of quoting. L.E. is an abbreviation for Lead Equivalency. This means the amount of lead required to provide complete radiation shielding. MarShield specifies these measurements in millimeters but if required can be specified in fractions. A Medical Physicist or your Radiation Safety Officer (RSO) must always specify the amount of shielding or lead equivalence needed in your facility. MarShield does not make any kind of recommendations but can give you a general idea based on past sales. Considerations and Information Required when Ordering
SpecificationsPhysical The table below contains some of the mechanical and thermal properties of CLEAR-Pb Lead-Plastic. Values are averages of several measurements.
Optical Refractive and reflective indices of CLEAR-Pb Lead-Plastic are compared with those of conventional acrylic, lead glass and plate glass are found in the table below. When a light beam passes through a plate with optically-polished planes, reflection occurs at both surfaces. Since the reflection is reduced for a material with a lower refractive index, it gives less reflection than lead glass.
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MarShield Leaded Acrylic / Plastic is the shatter-resistant, versatile answer to all of your customers' x-ray shielding needs! Our Lead acrylic is not lead glass. It's a unique, versatile, transparent plastic that contains 30% lead by weight. Shatter-resistant and rugged, it combines superb light transmission with effective radiation protection. It is available in six different lead equivalencies and thicknesses. The lead equivalency and thickness are directly related; the higher the L.E. the thicker the piece of leaded Acrylic.