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Day 2 Exam > Plastic > Flashcards

Plastic Flashcards

1
Q

Any of numerous synthetic or natural organic materials that are mostly thermoplastic or thermosetting polymers of high molecular weight and that can be molded, extruded, or drawn into objects, films, or filaments.

A

Plastic

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2
Q

A plastic capable of softening or fusing when heated without a change in any inherent properties, and of hardening again when cooled.

A

Thermoplastic

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3
Q

A chemical reaction in which the molecules of a monomer combine to form larger molecules that contain repeating strctural units of the original molecules.

A

Polymerization

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4
Q

A molecule of low molecular weight that can be chemically bound as a unit of a polymer.

A

Monomer

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5
Q

A compound of high molecular weight formed by polymerization and consisting essentially of repeating structural units.

A

Polymer

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6
Q

A polymer consisting of molecules that are large multiples of monomers.

A

High polymer

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7
Q

A compound of high molecular weight formed by polymerizing two or more different monomers together.

A

Copolymer

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8
Q

A method of shaping a plastic object by pouring the material into a mold and allowing it to harden without the use of pressure

A

Casting

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9
Q

A method of forming hollow ware by injecting air under pressure into a molten mass, as that of a thermoplastic or glass, and shaping the material within a mold.

A

Blow molding

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10
Q

A method of forming a thermoplastic, thermoset, metal or ceramic material by rendering it fluid in a heating chamber and then forcing it under high pressure into a closed mold.

A

Injection molding

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11
Q

A method of forming thermosetting plastic by cloasing a mold on it, forming the material by heat and pressure.

A

Compression molding

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12
Q

A method of forming thermosetting plastic by softening it in one chamber before it is forced into an adjacent mold where it is cured under heat and pressure.

A

Transfer molding

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13
Q

A method of shaping a thermoplastic sheet by heating and forcing it against the contours of a mold by heat and pressure.

A

Thermoforming

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14
Q

A method of thermoforming a plastic sheet by forcing it against the contours of a mold with compressed air.

A

Pressure Forming

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15
Q

A method of thermoforming a plastic sheet by evacuating the space between the sheet and the contours of a mold.

A

Vacuum forming

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16
Q

Any of numeros solid or semisolid organic substances prepared by polymerization and used with fillers, stabilizers and other components to form plastics.

A

Resin

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17
Q

A relatively inert substance added to modify the bulk, strength, heatresistance, electrical resistance, or working properties of a resin.

A

Filler

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18
Q

A substance added to prevent or retard the degradation of a plastic when exposed to ultraviolet radiation or other environmental conditions.

A

Stabilizer

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19
Q

Any of various substances added to a resin to increase its workability and flexibility.

A

Plasticizer

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20
Q

A substance that causes or accelerates a chemical reaction without itself undergoing a permanent change in composition.l

A

Catalyst

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21
Q

Any of a class of thermoplastic resins used for casting or molding plastic parts that are exceptionally transparent, tough, and resistant to weather and chemicals, or as the main ingredient in coatings, adhesives and caulking compounds.

A

Acrylic resins

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22
Q

Trademark for a brand of transparent acrylic resinl.

A

Lucite

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23
Q

Trademark for a brand of light, transparent, weather-resistant acrylic resin.

A

Plexiglas

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24
Q

A tough, transparent thermoplasti characterized by its high-impact strength and used for lightin fixtures, safety glazing, and hardware.

A

Polycarbonate

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25
Q

Trademark for a brand of tough polycarbonate used for shatterproof windows.

A

Lexan

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26
Q

A tough, light, and flexible thermoplastic used esp in the form of sheeting and film for packaging, dampproofing, and as a vapor retarder.

A

Polyethylene, Polythene

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27
Q

A tough, thermoplastic that is resistant to heat and chemicals and used for pipe fittings, electrical insulation and carpeting fibers.

A

Polypropylene

28
Q

A hard, tough, stable thermoplastic that is easily colored and molded, expanded or rolled into sheeting.

A

Polystyrene

29
Q

A thermoplastic used for making plastic pipes and hardware products that are tough, rigid, and resistant to heat and chemicals.

A

Acrylonitrile-butadiene-styrene, ABS

30
Q

Any of various tough, flexible plastics made from polyvinyl resin.

A

Vinyl

31
Q

Any of a class of thermoplastic resins formed by polymerizing or copolymerizing a vinyl compound.

A

Polyvinyl resin, vinyl resin

32
Q

A white, water-insoluble thermoplastic widely used in the manufacture of floor coverings, insulation and piping.

A

Polyvinyl chloride

33
Q

A thermoplastic resin used chiefly as the interlayer of safety glass.

A

Polyvinyl Butyral

34
Q

Any of a class of thermoplastics characterized by extreme toughness, strength, and elasticity and capable of being extruded into filaments, fibers and sheets,

A

Nylon

35
Q

A method of producing plastic film or sheeting by passing the material between a series of revolving, heated rollers.

A

Calendering

36
Q

A thin form of plastic, having a thickness very small in proportion to its length and width.

A

Sheeting

37
Q

Sheeting having a nominal thickness noth greater than 10mils.

A

Film

38
Q

A plastic that becomes permantly rigid when heated and cannot be softened again.

A

Thermoset, Thermosetting plastic

39
Q

The maximum temperature at which a plastic can be continuously employed without a noticeable reduction in any of its inherent properties.

A

Service temperature

40
Q

The temperature at which a plastic changes from a rigid to a soft state.

A

Softening point

41
Q

Any of various thermoplastic or thermosetting resins used in flexible and rigid foams, elastomers and resins for sealants, adhesives, and coatings.

A

Polyurethane

42
Q

Any of a group of thermosetting resins used in the manufacture of plastics and textile fibers.

A

Polyester

43
Q

A polyester reinforced with glass fibers and used in translucent roofs and skylights, facings for sandwich panels, and molded plumbing fixtures.

A

Fiberglass-reinforced plastic

44
Q

Trademark for a brand of strong, wrinkle-resistant polyester fiber.

A

Dacron

45
Q

Trademark for a brand of strong, thin polyester film used in photography, recording tapes and electrical insulation.

A

Mylar

46
Q

Any of various thermosetting resins capable of forming tight cross-linked polymer structures characterized by toughness, strong adhesion, and high corrosion and chemical resistance, used esp in surface coatings and adhesives.

A

Epoxy resin

47
Q

Any of a class of thermosetting resins formed by the interaction of melamine and formaldehyde and used for molded products, adhesives and surface coatings.

A

Melamine Resin

48
Q

Any of a class of hard, heat resistant thermosetting resins formed by the condensation of phenol with formaldehyde and used for molded products, adhesives and surface coatings.

A

Phenolic Resin, Phenoplast

49
Q

Trademark for a brand of dark phenolic resin, invented by Dr. Leo Baekeland in 1916, and used for telephone receivers, radio cabinets, electric insulators and molded plastic hardware.

A

Bakelite

50
Q

Any of various thermosetting synthetic resin made by condensing urea with formaldehyde and used in appliance housings, electrical devices, adhesives, and surface coatings.

A

Urea-formaldehyde Resin

51
Q

A method of shaping a fully or partially cured thermosetting laminate over a mold by heat and pressure.

A

Postforming

52
Q

A product, such as plywood and plastic laminate, made by uniting two or more layers of material by an adhesive or other means.

A

Laminate

53
Q

A hard surfacing material consisting of superposed layers of paper impregnated with melamine and phenolic resins, fused together under heat and pressure.

A

Plastic Laminate

54
Q

A plastic laminate molded and cured in the range of pressures from 1200 to 2000 psi (84 to 140kg per sqcm), used for surfacing countertops and cabinetry.

A

High-pressure laminate

55
Q

A plastic laminate molded and cured with a maximum pressure of 400psi (28kg per sqm), used in vertical and low-wear applications.

A

Low-pressure laminate

56
Q

A material made by chemically treating and toughening natural rubber, valued for its elasticity, nonconduction of electricity, and resistance to shock and moisture.

A

Rubber

57
Q

A highly elastic solid substance, essentially a polymer of isoprene, obtained by coagulating the milky juice of rubber trees and plants.

A

Natural Rubber, India Rubber

58
Q

A light, spongy, cellular rubber made by foaming latex before vulcanization.

A

Foam Rubber

59
Q

The treatment of rubber with sulfur and heat to impart greater elasticity, strength and durability.

A

Vulcanization

60
Q

An elastomer similar to natural rubber in properties and uses, produced by the polymerization of an unsaturated hydrocarbon, such as butylene or isoprene, or by the copolymerization of hydrocarbons with styrene or butadiene.

A

Synthetic Rubber

61
Q

Any of various polymers, such as butyl rubber or neoprene, having the elastic properties of natural rubber.

A

Elastomer

62
Q

A synthetic rubber having exceptional resistance to sunlight and unusually low gaseous permeability, produced by polymerizing butylene and used in roofing membranes and waterproofing barriers.

A

Butyl rubber

63
Q

Trademark for a brand of butyl rubber.

A

Butyl

64
Q

A synthetic rubber characterized by superior resistance to oils and sunlight, and used in paints, roofing membranes, flashing, gaskets and bearings.

A

Neoprene

65
Q

A rubber made from silicone elastomers and noted for its retention of flexibility, resilience and tensile strength over a wide temperature range.

A

Silicone Rubber

66
Q

Any of a group of polymers containing alternating silicon and oxygen atoms, characterized by thermal stability, chemical inertness and extreme water repellence, and used in adhesives, lubricants, protective coatings and synthetic rubber.

A

Silicone

67
Q
A

Day 2 Exam (32 decks)

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