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Know these functional groups:
acid, alcohol, amine, amide, epoxide, carbonate, ester
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Be able to recognize and differentiate between these polymer structures:
polyethylene, polypropylene, polyester, nylon, Kevlar, PVC, silicone, polycarbonate
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Oils, elastomers, molding compds - depending on MW
Low Tg Stinks when it crosslinks
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Rigid Formed by adding plasticizer "vinyl"
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Non-crystalline Strong & tough Stiff chains, H bonding betwn chains High TM
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Strong, tough Fibers
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Nylon cousin Very strong Very stiff chains Fibers
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Spaghetti LDPE - low MW, short branches HDPE - higher MW, crystalline (no branches) UHMWPE - very high MW, crystalline
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Like an organic salt
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Composites Matrix - metallic, ceramic, polymeric Reinforcement - particulates, fibers
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Composites Matrix - metallic, ceramic, polymeric Reinforcement - particulates, fibers Fibers - conts, disconts glass, carbon
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Composites Role of matrix in FR composites - transfer stress to fibers & protect fibers
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Composites Role of matrix in FR composites - transfer stress to fibers & protect fibers Fibers & orientation
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Materials selection Economics Environmental Political Market Aesthetics Material properties
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Materials selection Economics Environmental Political Market Aesthetics Material properties Ashby diagrams
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