Kevlar is a para-aramid synthetic fiber, one of a family of aramids. Its high strength-to-weight ratio makes it five times stronger than steel on an equal-weight basis. Kevlar is used in a variety of applications, including body armor, aircraft components, and marine ropes.
Kevlar was first developed in the early 1970s by Stephanie Kwolek, a research chemist at DuPont. She was working on developing a new type of fiber that would be both strong and lightweight. After several years of research, she discovered Kevlar, which is now used in a wide range of applications.
