Research Paper On Keivlar

Good Essays
History

People have used many different things to protect themselves. It started out as

clothes and shields made from animal skins, and eventually, as we got smarter, we made

shields out of wood, and then metal. From there, metal was also used to create armor

protecting your body. After the 1500’s, when guns were introduced, metal armor became

much less effective, so they had to recreate their protection.

The first soft body armor was made in Japan, and produced from silk. This was too

expensive and not strong enough to sustain against newly made bullets and firearms, so

they kept looking for a better solution. After the silk vests came the flak jacket. The flak

jacket was made out of ballistic nylon and mostly focused on protection
…show more content…
(Bellis, 2016)

How it works

What Kevlar does and how it works is really simple. Kevlar is an extremely strong

compound used to reinforce different things. How it works is its strength, which comes

from its chemical structure. The chemical structure of Kevlar consists of many long chains

Samuel Harambe Strahan

Period 3

January 23, 2017

2

cross-linked to each other. It is highly resistant to everything other than UV light, which has

been known to break down the Kevlar. It is very lightweight and strong, normally used in

bulletproof vests worn by members of the military. It protects its wearer from almost

anything, and is also put on helmets.

The way it works is that liquid crystal forms in a straight line, unlike other

polyamides that are unordered. The inventor, Stephanie Kwolek, created a solution which

was spun into a polymer, and thus Kevlar was created to be one of the strongest things in

the world. Kevlar was made by Stephanie Kwolek, while she was working for DuPonti In

1964. She began searching for a lightweight, yet strong fiber that could be used to reinforce

radial tires.

(Harris, n.d.)

How effective is
…show more content…
Kevlar is very effective at stopping incoming forces, such as bullets, as long

as you have the correct kind of Kevlar for the situation. There are many different kinds for

different caliber of firearms. Kevlar is also resistant to ballistic fragments, much like the

previously made flak jacket. However it still does not deflect these pieces of ammunition

and still absorbs the force. With enough layers of Kevlar on the vest I believe It could

become resistant to almost anything and be one of the best forms or protection in the

world.

(Science, 2008)

How would I improve it?

What I would do to improve the strength of Kevlar is to add more layers, a few extra

layers of protection onto the pre-existing form. This would, of course, increase the weight

of the vest, but it would also add to the provided protection tremendously. I would weave

the layers tighter, making it weigh less and provide more solid protection, rather than

having many open areas that could tear the fabric with enough force. On a vest I would add

sand bangs, hanging from the vest to protect the kidneys, which aren’t normally covered

You May Also Find These Documents Helpful

  • Satisfactory Essays

    Kevlar Projct

    • 378 Words
    • 2 Pages

    Kevlar's main weaknesses are that it decomposes under alkaline conditions or when exposed to chlorine, it is not strong under pressure (compressive stress) and its sensitive to ultraviolet light. Even with these weakness, people don’t abandon…

    • 378 Words
    • 2 Pages
    Satisfactory Essays
  • Satisfactory Essays

    Nt1330 Final Exam

    • 798 Words
    • 4 Pages

    1. Epoxy has density of 1.25 g/cm3 and elastic modulus of 4 GPa while Kevlar–49 has density of…

    • 798 Words
    • 4 Pages
    Satisfactory Essays
  • Good Essays

    It can be used for things like body armor; body armor made from kevlar is much lighter and yet much stronger than its earlier predecessor. This made the Kevlar body armor a much more desirable piece of equipment. Kevlar is so strong that even a direct shot from a high caliber bullet won’t even dent it. This high tech polymer has saved the lives of tons of people in war fare and even within police forces around small towns just like Greenfield. It has been used in many wars around the world including all the way back to the Vietnam war in which took place in the 1970s. Even today, kevlar mostly used in the form of Kevlar-49 is still used by the military and police officers. This can make a great impact on society in a major…

    • 783 Words
    • 4 Pages
    Good Essays
  • Good Essays

    Early Civilizations Matrix

    • 2437 Words
    • 10 Pages

    They used Rocks sharp to cut and animals skin for clothing, began to use, later on began using fibers for clothing then evolved to metal armor and even metal knives.…

    • 2437 Words
    • 10 Pages
    Good Essays
  • Good Essays

    kevlar, NBC Mask and so on. These are not just items for my personal use, they are a part…

    • 801 Words
    • 4 Pages
    Good Essays
  • Satisfactory Essays

    Roman Empire DBQ

    • 524 Words
    • 1 Page

    armor, many soldiers died in battle. This made other soldiers scared so they would run off…

    • 524 Words
    • 1 Page
    Satisfactory Essays
  • Good Essays

    With the beginning of human history comes the Stone Age—comprised of the Paleolithic and Neolithic Eras. The start of tool-making marks the former; the start of agriculture marks the latter. The first forms of tools in the Paleolithic Era were quite basic and rough, made from materials like wood, bone, and stone. Tools such as choppers for cracking bone and scrapers for preparing animal hide were used, and were then designed upon by later hominoids, from which weapons like clubs, spears, and knives were developed. These rudimentary tools functioned as the people’s means of survival. As a hunter-gatherer society, one killed and foraged for food and shelter. Tools were the catalyst. Fire was also a catalyst. It assisted alongside tools in hunting…

    • 798 Words
    • 4 Pages
    Good Essays
  • Powerful Essays

    Carbon Fiber

    • 1240 Words
    • 5 Pages

    In 1958 Roger Bacon created high performance carbon fibers at the Union Carbide. His method was to heat strands of a material called rayon (artificial silk) until they are carbonized, but this method proved to be inadequate because the resulting fibers had only carried 20% of carbon and the properties of it were inefficient, such as low strength and stiffness ("Carbon (fiber) ,n.d." ).…

    • 1240 Words
    • 5 Pages
    Powerful Essays
  • Powerful Essays

    The first condoms were developed in 1709. They were predominantly made of cloth, linen, and animal and were frequently used during the 1700’s and early 1800’s (Planned Parenthood). A variety of female barrier methods, like sponges, intravaginal plugs, cervical caps, and diaphragms, were created and patented as well during this time. These were often made from wood, cloth, and other materials (Lawagan). In 1844, vulcanized rubber was invented which let to the creation of the first rubber condom in 1855. The rubber condoms of this time were 1 to 2 millimeters thick with seems down the side and reusable, but very expensive. Like the condom, female barrier methods greatly improved with the availability of vulcanized rubber (“Evolution and Revolution: The Past, Present, and Future of Contraception”). In 1912, a new technique for producing condoms was developed by dipping glass molds into the raw rubber solution allowing for thinner condoms with no seams. By the 1930’s, production began on single-use condoms that were almost as thin and inexpensive as those available today (Planned Parenthood).…

    • 3837 Words
    • 16 Pages
    Powerful Essays
  • Good Essays

    This material has many applications requiring impact resistance. For example, the canopies of some fighter planes are made from this material to protect the pilot from bird strike. It is also the standard lens material for safety glasses. Of course, glasses with polycarbonate lenses do not automatically make them safety glasses. Safety glasses have additional frame requirements and must meet ANSI standards.…

    • 566 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Keivlar Research Paper

    • 678 Words
    • 3 Pages

    Kevlar is used to make many different varieties of clothing, accessories, and equipment to be resistant to cuts. Kevlar is five times stronger than steel and equalling to the same weight. Kevlar is known for its use in ballistics and stab resistance body armour. Kevlar has done its part in heroism by saving the lives of thousands of people around the world.…

    • 678 Words
    • 3 Pages
    Good Essays
  • Powerful Essays

    "Better, Stronger and Safer with Kevlar® Fiber." Kevlar® Aramid Fiber. DuPont, n.d. Web. 06 Nov. 2013. <http://www.dupont.com/products-and-services/fabrics-fibers-nonwovens/fibers/brands/kevlar.html>.…

    • 7078 Words
    • 26 Pages
    Powerful Essays
  • Better Essays

    Michael David Mitchell

    • 1136 Words
    • 5 Pages

    DuPont is an American chemical company headquartered out of Wilmington, Delaware. “DuPont provides a wide range of products and services for markets including agriculture, nutrition, electronics, communications, safety and protection, home and construction, transportation and apparel. One such product is Kevlar®, which is DuPont 's registered trademark for a very light, very strong synthetic fiber that is spun into ropes or fabric sheets that can be used as such, or as an ingredient in composite material components. Kevlar® belongs to a class of synthetic polymer fibers known as aramids…highly resistant to heat, and has a strength-to-weight ratio that is approximately five times stronger than steel.” (VIRGINIA) The production procedure of these items are considered trade secrets, and requires all employees involved with the selling or production of such items to sign non-disclosure agreements.…

    • 1136 Words
    • 5 Pages
    Better Essays
  • Good Essays

    As well as a number of other waterproofing features. The Gore-Tex laminate is waterproof, as well as being highly breathable. The hydrophobic leather is made to prevent water penetration while still being comfortable. Another feature to aid in waterproofing is the closed lacing system, which features eyelets to allow for smooth movement. As well as two-zone lacing via a clamp ring. These features allow for maximum water protection.…

    • 400 Words
    • 2 Pages
    Good Essays
  • Good Essays

    Lead and the Environment

    • 905 Words
    • 4 Pages

    sheets which can be made into rods and pipes. It can also be molded into…

    • 905 Words
    • 4 Pages
    Good Essays