Plastics - MEGR 2180 PLASTICS MEGR 2180 Engineering...

Info icon This preview shows pages 1–11. Sign up to view the full content.

View Full Document Right Arrow Icon
MEGR 2180 PLASTICS
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
MEGR 2180 Engineering Materials Metals Plastics Ceramics Composites Metals Nonferrous Ferrous Oxides Nitrides Carbides Reinforced plastic Metal-matrix Ceramic matrix Steels Stainless steels Tool and die steels Aluminum Copper Titanium Tungsten Glasses Graphite Diamond Ceramic-matrix Laminates Thermoplastics Thermosets Cast Irons A li E i R bb Elastomers Acrylics ABS Nylons Polyethylene PVC Epoxies Phenolics Polymides Rubbers Silicones Polyurethanes
Image of page 2
MEGR 2180
Image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
MEGR 2180 Plastics Chrysler sees plastic car in poorer countries Plastics • Plastics are everywhere Plastics are everywhere • Advantages – Low density with varying Low density with varying degrees of strength – Visual appeal (colors, transparencies) – Ease of manufacturing – Low cost – Insulating properties
Image of page 4
MEGR 2180 Plastics (Polymers) • Mer/Monomer (from Greek “meros” = Mer/Monomer (from Greek meros “part”) •Polymer Polymer Polymerization is the process which mers are bonded to form polymers (this mers are bonded to form polymers (this is a chemical reaction) • Degree of Polymerization is average Degree of Polymerization is average number of mers in a chain.
Image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
MEGR 2180 Polymerization Polymer properties depend on – Chemical composition (mers) – Length of molecules – Structure of Molecules Polymerization is the process which mers are bonded to form polymers (this is a chemical bonded to form polymers (this is a chemical reaction) Two types of Polymerization – Additive – Condensation
Image of page 6