Uses of and Information About Kevlar
Kevlar is what is called a polymer. A polymer is a molecule that is composed of many, many smaller molecules called monomers chained together. Kevlar's chemical name is poly-paraphenylene terephthalamide, the "poly" in it referring to the fact that it is a polymer, however we'll continue to call it Kevlar to avoid confusion.
To give you a better idea of what I'm talking about when I say polymer, here is an image that explains it well:
First off, let's talk about some of the uses of Kevlar.
The most obvious use of Kevlar is in its ability to protect the wearer when woven together. You've most likely heard of Kevlar from this type of use, as it is used in all kinds of things ranging from gloves, to helmets, to bulletproof vests and even blue jeans with the Kevlar woven right into it!
The reason we use and trust Kevlar to protect ourselves in especially dangerous situations is because it is one of the most well suited things for this purpose. Kevlar is an extremely strong synthetic yarn, yet it still manages to be lightweight enough that it's possible to weave layers upon layers of it together until it's so strong that bullet would have a hard time passing through, and still stay light enough to not greatly encumber the wearer.
Another use similar to the above is its use in cables and rope. In addition to not allowing projectiles through it when woven in a sheet or plate form, when woven into a rope-like shape it is nearly impossible to snap, unlike regular rope. It doesn't really lose its resistance toward being cut or shot through regardless of the shape it's woven into, which is why it's often used as a sheath for cables. When used as sheathing you may be more familiar with it under the name of Parafil.
You may have also used sporting or musical equipment before that relies on Kevlar. A few examples of how it is used are in fencing jackets, the string on certain bows or tennis racquets, in bows for string instruments, on drumheads and many many more uses specific to those categories.
There are hundreds of current uses for Kevlar, and in the future, likely many many more.