polycarbonate
TRANSCRIPT
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FACULTY OF ENGINEERING CHEMICAL DEPARTMENT3TH YEAR
Polycarbonate
Under supervision Dr/Wael Abd El-Moez
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Members Of Smile Group
Roaa MakramBasma MohammedNada Abo El-soued
Zeinab SaiedFatma Tony Shimaa SaedMary Sedek
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HistoryDefinitionChemical StructureChemical ReactionPropertiesApplicationPrice Flow Sheet
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The purpose of this presentation
PC is a good material choice in industry not only due to its
characteristics, but also because its processing is
environmentally friendly, and it can be recycled
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History
1-PC was developed in 1953 by the German scientist "Hermann Schnell" who was chemist in German company "Bayer"
2-PC was introduced in United States Of America in 1960 by the general electric company
3 -finally in China
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Definition
PC known by the trademarked names Lexan, Makrolon, Makroclear and others, are a particular group of thermoplastic polymers. They are easily worked, molded, and thermoformed. Because of these properties
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Chemical Structure
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Chemical Reaction
1-Polycarbonate begins with the monomer bisphenol
"A."
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2-To make it more reactive
, it is reacted with sodium hydroxide to get the sodium salt of bisphenol "A"
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It is reacted with phosgene and the carbon link is created , leaving A byproduct of NaCl
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THE FINAL REACTION
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processMolding Extrusion
The PC melt is pressed into a mold with the defined shape of the final product.This process is ideal for specific parts such as automotive and computer parts
The molten PC is passed through a die that gives the material its final shape.Long pipes and sheets are created by this process
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Flow Sheet Of the process
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Classification of polycarbonate
Reaction to stress and temperatureThermoplastic (can be recycled)
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Molecular Arrangement all the chains become tied together to form a crosslinked material that looks like this:
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Morphology Of Structure
Structure of crystalline polycarbonate
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METHODS USED FOR PRODUCTION
CONDENSATION REACTION
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MECHANICAL STRENGTH AND BEHAVIOR Polycarbonates is elastomericelastomer is an amorphous polymer with a special molecular structure looking like mixed up spaghetti’s having in addition many cross links
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properties
1-Strong
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2-light weight
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3-high refractive index
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high
4-impact resistance
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5-wide temperature range6-very durable
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1-Bullet proof glass
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2-Lenses
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3-polycarbonate industrial equipment and housing componentBottles
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4-Furniture
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6-Face shields
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7-Medical
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8-electrical insulator
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Summary of
application
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What is the difference between Polycarbonate
and other commonly sold plastics?
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PRICES Clear plastic roofing sheet polycarbonate prices
2.65-3.8$ / Kilogram
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Polycarbonate solid sheet
3.78-6.82$ / Kilogram
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Lexan polycarbonate
Price: US $4-7 / Kilogram
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Block flow diagram
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