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04_polymer_1_6_f - 2.008 Design Manufacturing II Spring...

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1 1 2.008 Design & Manufacturing II Spring 2004 Polymer Processing I -What is polymer? -Polymer Science 2.008 spring 2004 S. Kim 2 Plastics $120 Billion shipments, 1999 US One of the greatest inventions of the millennium – Newsweek Music LPs, CDs No-sticking TEFLON Stre-e-e-tching SPANDEX Applications Name it 2.008 spring 2004 S. Kim 3 Plastic Intensive Vehicles Corvette Lotus 2.008 spring 2004 S. Kim 4 Automotive Plastics and Composites Use Exterior doors hoods fenders bumper covers (most cars have soft fascia) Interior instrument panels, door trim, seats, consoles Engine valve covers, intake manifolds, fluid containers, etc. 2.008 spring 2004 S. Kim 5 Recreational Plastics and Composites Use Snow Equipment skis, snow boards, snow mobiles, etc. Water Sports Equipment water skis, water crafts, snorkel equipment, fishing gear diving equipment and clothes Land Sports Equipment shoes, roller blades, skate boards, tennis, golf, etc. 2.008 spring 2004 S. Kim 6 Commercial Plastics Usage Packaging Wrapping, bags, bottles, foams, shrink wrap. Textiles Clothing, carpets, fabrics, diapers, netting for sports Furniture, Appliances, House wares Telephones and other communication equipment, computer housings and cabinets, luggage, seating, components for washers, dryers, etc. Musical instruments, CDs, VCRs, TVs, cases Construction Moldings, counter tops, sinks, flooring, cups, paints, etc. Tyvek
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2 2.008 spring 2004 S. Kim excerpt from Prof. J. Greene, CSU 7 Medical Plastics and Composites Use Containers Bottles, bags Drug delivery IV bags, syringes tubing and tools for surgery Implants, artificial skins The use of plastic materials in the medical field, about 4 billion dollars in 2000 (US). 2.008 spring 2004 S. Kim 8 Materials Solid materials metals ceramics Plastics thermoplastics thermosetts elastomers Plastic: Greek, plastikos , means to form or mold 2.008 spring 2004 S. Kim 9 Plastics, Polymers, Macromolecules Poly (many) + mer (structural unit) -[C 2 H 4 ] n - ,poly[ethylene] Metal: single atoms, metallic bond Ceramic: metallic oxides, ionic bond or dipole interactions, van der Waals bonds H H C C H H spaghetti H H C C H H 2.008 spring 2004 S. Kim 10 2.008 spring 2004 S. Kim 11 Thermoplastics amorphous crystalline Transparent Translucent Opaque 2.008 spring 2004 S. Kim 12 Crystalline vs. amorphous Crystals, lamella structure Degree of crystallinity Translucent/opaque
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