Unformatted text preview: crazes are regions of localized plastic deformation which lead to microvoids, as crazes increase the stresses will be distributed over a larger volume, meanin no force peaks 7. What are 2 advantages of plastics? good electrical insulation, good thermal insulation, high specific strength, can be recycled, low density, can be opaque 8. What are 2 disadvantages of plastics? low toughness, less resistance to abrasion, can produce hazardous fumes when burned, can no be used in high temperature applications All plastics are polymers but all polymers are not plastics T Plastics have high melting points F Plastics have high specific strength T Plastics are more ductile compared to metals T Most of the plastics are biodegradable F High molecular weight produces stronger polymers T Polymers are not found in nature F "Mer" means molecule F...
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- Spring '14
- Polymer, homopolymer, Heteropolymer