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Know these functional groups:

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Presentation on theme: "Know these functional groups:"— Presentation transcript:

1 Know these functional groups:
acid, alcohol, amine, amide, epoxide, carbonate, ester

2 Be able to recognize and differentiate between these polymer structures:
polyethylene, polypropylene, polyester, nylon, Kevlar, PVC, silicone, polycarbonate

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4 Oils, elastomers, molding compds - depending on MW
Low Tg Stinks when it crosslinks

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6 Rigid Formed by adding plasticizer "vinyl"

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8 Non-crystalline Strong & tough Stiff chains, H bonding betwn chains High TM

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10 Strong, tough Fibers

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12 Nylon cousin Very strong Very stiff chains Fibers

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14 Spaghetti LDPE - low MW, short branches HDPE - higher MW, crystalline (no branches) UHMWPE - very high MW, crystalline

15 Like an organic salt

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18 Composites Matrix - metallic, ceramic, polymeric Reinforcement - particulates, fibers

19 Composites Matrix - metallic, ceramic, polymeric Reinforcement - particulates, fibers Fibers - conts, disconts glass, carbon

20 Composites Role of matrix in FR composites - transfer stress to fibers & protect fibers

21 Composites Role of matrix in FR composites - transfer stress to fibers & protect fibers Fibers & orientation

22 Materials selection Economics Environmental Political Market Aesthetics Material properties

23 Materials selection Economics Environmental Political Market Aesthetics Material properties Ashby diagrams


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