Polycarbonate

FACULTY OF ENGINEERING CHEMICAL DEPARTMENT3TH YEAR

Polycarbonate

Under supervision Dr/Wael Abd El-Moez

Members Of Smile Group

Roaa MakramBasma MohammedNada Abo El-soued

Zeinab SaiedFatma Tony Shimaa SaedMary Sedek

HistoryDefinitionChemical StructureChemical ReactionPropertiesApplicationPrice Flow Sheet

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

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

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

Chemical Structure

Chemical Reaction

1-Polycarbonate begins with the monomer bisphenol

"A."

2-To make it more reactive

, it is reacted with sodium hydroxide to get the sodium salt of bisphenol "A"

It is reacted with phosgene and the carbon link is created , leaving A byproduct of NaCl

THE FINAL REACTION

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

Flow Sheet Of the process

Classification of polycarbonate

Reaction to stress and temperatureThermoplastic (can be recycled)

Molecular Arrangement all the chains become tied together to form a crosslinked material that looks like this:

Morphology Of Structure

Structure of crystalline polycarbonate

METHODS USED FOR PRODUCTION

CONDENSATION REACTION

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

properties

1-Strong

2-light weight

3-high refractive index

high

4-impact resistance

5-wide temperature range6-very durable

1-Bullet proof glass

2-Lenses

3-polycarbonate industrial equipment and housing componentBottles

4-Furniture

6-Face shields

7-Medical

8-electrical insulator

Summary of

application

What is the difference between Polycarbonate

and other commonly sold plastics?

PRICES Clear plastic roofing sheet polycarbonate prices

2.65-3.8$ / Kilogram

Polycarbonate solid sheet

3.78-6.82$ / Kilogram

Lexan polycarbonate

Price: US $4-7 / Kilogram

Block flow diagram