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Acrylic Chemistry Presentation

Chemistry Honors Block E
by

R'rieon DeJean

on 9 April 2013

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Transcript of Acrylic Chemistry Presentation

By: R'rieon DeJean What is acrylic? What are the types? Extruded Acrylic Cast Acrylic Acrylic is ten times stronger than glass making more impact resistant and therefore safer. Acrylic glass is also very clear , allowing 92% of visible light to pass through it. It is also half as heavy as glass. It is easier to work it and just all around better for homes, aquariums, and many more. The term "acrylic" is used to describe products that contain a substance derived from acrylic acid or another relating compound. It is most often to describe a clear plastic glass-like known as Poly Methacrylate (PMMA). The chemical formula is (C5O2H8)n. The melting point is 320 degrees Fahrenheit (160 degrees Celsius). The boiling point is 392 degrees Fahrenheit (200 degrees Celsius). Two main types:

1. Extruded Acrylic
2. Cast Acrylic Extruded Acrylic is made through a process in which the liquid plastic is pushed through rollers, which press into sheets as it cools. This is the inexpensive process but the results are not the best quality as the cast acrylic is. It is still considered to be good quality and is usually the more common type available in markets. Cast Acrylic is the more expensive but the better quality out of the two. In this process single sheets are made by pressing the liquid plastic between pieces of mold, which then is taking through a gradual heating process. This type is often used in aquariums, awards, and other products that require shaping or machining. Advantages Acrylic Disadvantages and Misconceptions There are plenty misconceptions about acrylic. Mainly there is the one that it is yellow, brittle, and cracks overtime. These may be true about fake plastic acrylic but not with acrylic. Among the many advantages there are only two disadvantages. One is that it is more expensive, and if exposed to direct flame, it will melt and eventually melt. The second is that if not taken care of it can scratch, and improperly made joints can be very visible. Pictures of Acrylic Uses The Origin of Acrylic....... It’s 1893: French chemist Charles Moureu has just discovered acrylonitrite. He doesn’t know what to do with it, nor that his name will be forever linked with the modern phenomenon that is acrylic. By 2001, more than 4 million tons of acrylonitrite (a petrochemical) were being produced all over the world. But when Moureu made his discovery public, it was quite a while before acrylonitrite was put to use in the first synthetic rubbers.Poly Methacrylate was one of the earliest commercially produced acrylic substances – an acrylic glass substitute. Created by Otto Rohm and Otto Haas, this ‘acrylic glass’ – they called it Plexiglass – was used to great effect in military bomber planes and aeroplane canopies. Acrylic is typically lighter and stronger than glass, and because it can be melted to join or weld it, it’s a good choice for glass constructions. Today it is used for everything from aquariums to helmet visors, and bullet-proofing to car body panels. THE END THANK YOU FOR YOUR ATTENTION!!!
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