Plastics Flashcards
(15 cards)
What is a product of synthetic origin made from coal, salt, natural gas, cotton, wood, and water?
Plastics
What are simple chemical molecules that form the building blocks of polymers?
Monomers
What are chain-like molecules of high molecular weight, formed by linking monomers?
Polymers
What is the trade name for polytetrafluoroethylene?
Teflon
What is the basic ingredient of plastic?
Resin
What additives are used in plastics to impart specific properties?
Fillers
What additives decrease the amount of expensive plastic required and increase mass?
Extenders
What additives protect plastic from degradation due to environmental exposure?
Stabilizers
What additives are mixed with resin to increase flexibility, resiliency, and impact resistance?
Plasticizers
What plastic molding process produces high-quality, accurate molds and is used for butter tubs, yogurt containers, closures, fittings, and razors?
Injection Molding
What plastic molding process is used in conjunction with extrusion and produces hollow plastic products without needing to join separate parts?
Blow Molding
What plastic molding process melts and fuses resin inside a closed mold without using pressure, ensuring even distribution?
Rotational Molding
What are common uses of rotational molding?
Shipping drums, storage tanks, toys
What type of plastics soften when exposed to heat and harden when cooled?
Thermoplastics
What type of plastics, also called thermocuring plastics, set into permanent shapes when heated and cannot be softened or remolded once set?
Thermosets