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Kevlar: Quiz

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Question 1: The fiber is used in woven rope and in cable, where the fibers are kept parallel within a ________ sleeve.
Ultra high molecular weight polyethylenePolyesterNylonPolyethylene

Question 2: Developed at ________ in 1965,[1][2] this high strength material was first commercially used in the early 1970s as a replacement for steel in racing tires.
ComcastHSBC Bank USADuPontSunoco

Question 3: Typically it is spun into ropes or fabric sheets that can be used as such or as an ingredient in ________ components.
Carbon fiber-reinforced polymerComposite materialPolyesterFiber reinforced concrete

Question 4: ________ (Company that invented and manufactures Kevlar)
SunocoHSBC Bank USAComcastDuPont

Question 5: Kevlar 29's industrial applications are as cables, in ________ replacement, brake linings, and body armor.
AsbestosHempFlaxCotton

Question 6: Kevlar is well-known component of personal armor such as combat helmets, Ballistic face masks, and ________.
Ballistic vest.45 ACPFirearm.357 Magnum

Question 7: Kevlar's structure consists of relatively rigid molecules which tend to form mostly planar sheet-like structures rather like ________ protein.
LinenKente clothSilkSpandex

Question 8: These inter-molecular ________ form between the carbonyl groups and NH centers.
Dipolar bondChemical bondHydrogen bondChemical polarity

Question 9: These interactions have a greater influence on Kevlar than the van der Waals interactions and chain length that typically influence the properties of other synthetic polymers and fibers such as ________.
Ultra high molecular weight polyethyleneNylonPolyethyleneAramid

Question 10: A similar fiber called Twaron with roughly the same chemical structure was introduced by ________ in 1978, and now manufactured by Teijin.
AkzoNobelThe Carphone WarehouseBurberryBT Group







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