鏤?HTML> SAN DIEGO PLASTICS, INC. - POLYCARBONATE PLASTIC

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                            San Diego Plastics
                            San Diego Plastics, Inc.
                            2220 McKinley Ave.
                            National City, CA 91950
                            800/925-4855       619/477-4855       Fax 619/477-4874

                            POLYCARBONATE
                            (Makrolon®, Lexan®, Zelux®, Monogal)

                            Polycarbonate sheet

                            Polycarbonate is a tough, dimensionally stable, transparent thermoplastic that has many applications which demand high performance properties. This versatile thermoplastic maintains its properties over a wide range of temperatures, from -40"F to 280"F. It is available in three types: machine grade; window and glass-filled. It is the highest impact of any Thermoplastic, transparent up to 2" in special grades, outstanding dimensional and thermal stability, exceptional machinability, stain resistant and non-toxic with low water absorption.

                            Machine Grade is relatively stress free to permit the most demanding machining. It is also available in glass-filled. This polycarbonate is perfect for high performance uses in tough applications over a broad temperature range.

                            Window Grade is optically clear, providing total luminous transmittance and very low haze factor. The high impact strength makes it resistant to repeated blows, shattering and spalling.

                            Glass Filled
                            Glass-reinforced polycarbonate is finding principal applications in designs where metals, particularly die-cast aluminum and zinc, are commonly used. The coefficient of thermal expansion is reduced by nearly 75%, thus equaling that of some metals. While glass-reinforced has less impact strength than standard grades, it is still tougher and more impact resistant than most other plastics and die cast aluminum.

                            ADVANTAGES TO POLYCARBONATE

                            Impact strength
                            Unnotched polycarbonate is virtually unbreakable, making it extremely safe in areas where parts may be exposed to impact. When exposed to repeated heavy blow, the material tends to cold form rather than shatter.

                            Electrical
                            Polycarbonate is excellent for electrical applications, because of its high dielectric strength and high volume resistivity which decreases only slightly as temperature or humidity is increased.

                            Machinability
                            Parts can be easily machined from standard metal working tools. No special tools are needed, and finished parts can be polished to a high gloss. Water or water-soluble cutting oils should be used when machining polycarbonate, since some standard cutting oils will attack the material. Polycarbonate can be machined on standard metalworking or woodworking equipment. Its unique properties permit it to be machined without chipping, splitting, or breaking.

                            Annealing
                            Polycarbonate slab (Zelux) has been stressed relieved using Liquo-Temp annealing process. In some instances where extensive machining is required, a secondary annealing of semi-finished parts is highly recommended. Secondary annealing can be accomplished by heating parts at 250"F in a desiccated air circulating oven for one hour per one inch of thickness. After heating, the oven should be turned off and allowed to cool to room temperature spontaneously.

                            Bonding
                            Polycarbonate can be mechanically bonded by standard methods. It can also be cemented by using a solvent such as methylene chloride or adhesives such as epoxy, urethane and silicone. Polycarbonate and also be ultrasonically or vibrationally welded.

                            Removing paint or other materials
                            Fresh paint may be removed by rubbing lightly with a cleaning material such as isopropyl alcohol, or VM-P grade naptha. Then the sheet should be washed immediately with a mild soap or detergent in warm water, and rinsed thoroughly with clean water. Grease and glazing compound may similarly be removed from the surface with the above mentioned cleaning materials. Weathered paint may be lifted off the sheet with masking tape. Razor blades or other sharp scraping tools should never be used.

                            MORE ADVANTAGES TO POLYCARBONATE

                            Formability
                            Standard polycarbonate sheet is not heat formable; however, formable sheet is available on a custom basis. Standard Lexan polycarbonate sheet can be heat formed with proper pre-drying. Lexan sheets up to 114" may also be cold formed under special conditions.

                            Cleaning
                            Kleenmaster Brillianize may be used. (Also see Novus) Products such as abrasive or highly akaline cleaners, acetone, carbon tetrachloride, benzene or leaded gasoline should not be used, and the sheet should not be cleaned in hot sun or at high temperatures.

                            Decorating
                            Polycarbonate products will accept painting, printing, or vacuum metalizing as decorating methods.

                            UV Stabilization
                            Natural and Black Machine grade and Window grade are UV stabilized. Polycarbonate rod, machine grade, is not UV stabilized, but is available on custom quotation.

                            APPLICATIONS

                          1. Lenses
                          2. High temperature and pressure windows
                          3. Face shields
                          4. Industrial equipment and housing components
                          5. Medical equipment components
                          6. Instrument components
                          7. Electrical insulators and connectors
                          8. Aircraft & Missile components
                          9. Portholes in pressure chambers
                          10. Jet pump impellers and diffusers
                          11. Automotive parts
                          12. Card guides
                          13. Assembly line cogs

                            MATERIAL AVAILABLE

                            Machine Grade (Natural, Black and Optically Clear)
                            Clear or Black
                            Unmodified - 3/8" to 4" thick
                            Glass-Filled* - 1/8" to 4" thick (natural and black only)
                            Sheet sizes:  Natural, Clear and Black 24x48, 48x96 and also 48x120 (call for availability and pricing)
                            Glass filled:  24 x 48 only
                            Call for price and availability

                            Window Grade (Glazing Grade)
                            (recommended for "see-through" applications).
                             

                            Custom Sheet
                            Flame retardant
                            FDA/Medical grade polycarbonate is approved for contact with wet and dry food applications and meets US. Pharmacopoeia regulations.
                            Premium optical grade sheet
                            Colors

                            Rod and Tube
                            Natural, black and glass filled formulations.

                            Makrolon速 Sheet Cleaning Instructions

                            Makrolon速 Sheet Design/Forming/Fabrication

                            Makrolon速 Sheet Recycle Statement

                            Vapor Polishing information

                            Also see Polycarbonate Structured Sheet

                            GALLINA PRODUCTS

                            POLYGAL

                            LEXAN THERMOCLEAR

                            Call today for complete product information!
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                            800/925-4855
                            619/477-4855

                             


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