What is Kevlar?


Kevlar Used To Create Cut Resistant Work Gloves

Kevlar is a synthetic material known as a polymer (aren’t you glad you asked?). A Kevlar fiber is an array of molecules that are paralllel to each other like spaghetti in a package. These chains are held together by electrostatic forces between molecules known as hydrogen bonds. The fibers are drawn at a temperature over 750 degrees Fahrenheit. (If you must know, the actual chemical name of Kevlar is poly-para-phenylene terephthalamide, but we didn’t tell you.)

All this chemistry stuff leads to a material 5 times stronger per weight than steel and about half the density of fiberglass.

It was a lady named Stephanie Louise Kwolek who pioneered the research leading to the marketing of Kevlar by Dupont in the mid-70’s.

General features of Kevlar include:

  • High Tensile Strength at Low Weight
  • Low Elongation to Break High Modulus (Structural Rigidity)
  • Low Electrical Conductivity
  • High Chemical Resistance
  • Low Thermal Shrinkage
  • High Toughness (Work-To-Break)
  • Excellent Dimensional Stability
  • High Cut Resistance
  • Flame Resistant, Self-Extinguishing


Kevlar has been layered into bullet-resistant vests, but is also used in belts for radial tires, cables (used on the Mars Pathfinder), reinforced composites for aircraft panels and boat hulls, flame-resistant garments (especially in blends with Nomex), sports equipment such as golf club shafts and lightweight bicycles, as asbestos replacements in clutches and brakes, and in Welding Jackets, Work Gloves, and Work Boots. Our last bit of information is that you always double check that the products you buy for the previous features and benefits are actually made with Kevlar. If you just assume they are, you may make a dangerous mistake by leaving yourself exposed to hazardous situations.

2 Responses to “What is Kevlar?”

  1. Joanne K. March 29, 2012 at 5:30 pm #

    Are we quite sure the inventor of Kevlar’s middle name is “Louse”? :-) I think an edit is due.

    • daniellek March 30, 2012 at 6:49 pm #

      Thank you for the heads up. We meant to type Louise. Fixed.

Leave a Reply:

Gravatar Image

Business Blogs - BlogCatalog Blog Directory

Get 10% Off At WorkingPerson.com!

Sign-up for our email newsletter now and instantly receive an exclusive discount code in your email inbox to save 10% OFF your first order!

Newsletter Subscribers Also Enjoy
  • Free Coupons & Gifts
  • Exclusive Member Discounts
  • New Product Announcements
  • Helpful Safety Tips
No Thanks