Kevlar

Who and when kevlar was invented?

• Stephanie Kwolek in 1967

• Stephanie Kwolek in 1975

• Stephanie Kwolek in 1965

• Louis W Parker in 1975

In what kind of structure are carbon atoms placed in kevlar?

• Hexagon ring

• Pentagon ring

• Triangle

• Loosely

What kevlar is

• Kevlar is an artifical fiber in the aromatic polyamide family.

• Kevlar is an organic fiber in the aromatic polyamide family.

• Kevlar is modificated plastic.

• Kevlar is created from steel and plastic.

What are the properties of kevlar?

• flexible, abrasion resistance

• ductile, termal stability, abrasion resistance

• toughness, abrasion resistance, termal stability

• 5 times lighter than steel, flexible, ductile

What is lighter and how many times?-Steel or kevlar

• kevlar 5 times

• kevlar 4 times

• kevlar 6 times

• steel 2 times

How much does one kilogram of kevlar cost?

• 250

• 300

• 200

• 220

What kind of car components are made of kevlar?

• suspension, interior, steering wheel

• engine, brakes, exhaust

• pistons, chassis, suspension

• clutch, body kit, tires