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Kevlar in society
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Kevlar fibers are 5 times stronger than steel. Since the introduction of Kevlar technology, industries have used Kevlar for many applications. Kevlar is most commonly used in safety applications such as bullet-proof vests for law enforcement agents, helmets for military infantries, and as protection from fire.
Kevlar is a synthetic (person-made) material known as a polymer. A polymer is a chain made of many similar molecular groups bonded together called monomers.
A single Kevlar polymer chain could have anywhere from five to a million segments bonded together. Each Kevlar segment or monomer is a chemical unit that contains 14 carbon atoms, 2 nitrogen atoms, 2 oxygen atoms and 10 hydrogen atoms. The hydrogen bonds greatly strenghten the
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As we know from physics, the pressure that an object exerts on another object is equal to the force divided by the area. Kevlar is remarkable at absorbing and displacing the pressure of an object.
Pressure = Force/Area
F = (mass * gravity)
The ability to absorb energy and displace the pressure of an object makes Kevlar so useful in protecting us from knives, bullets and infinite types of sharp objects.
Military helmets today are much lighter and much stronger than helmets of the past. Helmets of the past consisted of metal. As you know metal can get heavy, especailly after long durations of time. Kevlar is also five time stronger than metal. The new Kevlar helmets help keep our troops safe, and do not cause fatigue on their heads.
Combat vehicles use composite panels made of Kevlar liners mounted to the inside of the vehicles structure. With the combination of other metals or ceramics, they greatly increase the survivability for the crew members. Kevlar does not melt or shrink when exposed to extreme heat. It is also extremely resistant to cuts, punctures, ans chemical
Different chemistries and production methods of these fibers give them certain advantages. as viscose’s ability to combine with other fibers to create new fabrics easily) and disadvantages. such as nylon’s quickly weakening fibers or natural silk’s difficulty of production. other that make them more or less suitable for certain purposes. For this reason, when? considering silk and artificial silk, it is illogical to pick one fiber that is superior to the others.
Kevlar (10) - synthetic fiber that is often used as a reinforcing agent in tire and other rubber products. I is made up of high tensile strength.
The purpose of this experiment was to create a polymer by reacting a mixture of decanedioyl dichloride and dichloromethane with a mixture of water, 1,6-hexadiamine and sodium carbonate. Specifically, we created the polymer Nylon-6,10. Nylon-6,10 polymers are used in a vast majority of things we use in everyday life such as zippers, the bristles in brushes, and even car parts. This experiment was different from the industrial method of making nylon because that takes place at a much higher temperature. A polymer is a substance that has a structure made of similar or identical units bonded together. All polymerizations fall into two categories: step-growth and chain-growth (both of which we used to form our polymer). Step growth polymerization
Part C. Ibuprofen consists of covalently-bonded carbon, hydrogen, and oxygen atoms. Two CH3 molecules are single-bonded to a CH molecule. The CH molecule is bonded to a carbon atom that forms a 6-sided ring of carbon atoms. Another CH molecule is single-bonded to a carbon atom on the other side of the ring. There are 3 double bonds inside the rings between carbon atoms. On the right, another CH3 molecule and a COOH molecule are both single bonded to the CH molecule.
It is five times stronger, yet the same weight as steel. Kevlar Aramid fiber is an improved material, which is an extremely lightweight, man-made organic fiber. Kevlar fiber has a combination of properties, which have made Kevlar a very useful material. These include, high strength, low weight, high chemical resistance and high cut resistance. This material does not corrode or rust and is also unaffected when placed in or under water.
Carbon is essential to many basic biological functions. Carbon’s unique properties are what make this element the basis of all living matter. Carbon is also responsible for the creation of monomers, polymers, and macromolecules. Monomers are small, simple units of carbon that have been strung together to form larger polymers. Polymers are more complex molecules made from individual carbon monomers. Macromolecules are very large molecules made from carbon based chains, such as polymers. The four classes of macromolecules include carbohydrates, proteins, lipids, and nucleic acids. The creation of these very important macromolecules is caused by the properties of carbon. These properties include carbon’s ability to form four covalent bonds, carbon’s
A wide variety of coating alloys and wrought alloys can be prepared that give the metal greater strength, castability, or resistance to corrosion or high temperatures. Some new alloys can be used as armor plate for tanks, personnel carriers, and other military vehicles.
Everything needed for successful completion of the mission is on the helmet's visor such as airspeed, heading warning, targeting information, altitude and ground proximity warnings. This makes the workload a lot easier and helps the pilot to make split second decisions in the aircraft. The helmet gets real time information from the six cameras mounted on the aircraft's airframe. The system feeds real time data to the pilot’s helmet, allowing you to look through the airframe of the plane. In addition, the helmet gives night vision to the pilot from cameras mounted to the aircraft. Unprecedented Situational Awareness.
Without the crucial effective materials that make up of body armor, in order to protect officers against all sorts of handguns, knives, and blunt trauma, the body armor would be ineffective. The ballistic panels that are used in bulletproof vest can be made up of different materials, depending on the manufacturer. Body armor is put up to certain test before being able to be sold, therefore, the different materials should all provide the same minimum levels of protection. Unfortunately, some body armors do not always end up passing the tests. For example, a body armor called Zylon, have been shown to fail after a short period of time. Zylon was not an improvement for body armor, after its release it rapidly started to degrade, which lead to
To start off, the bulletproof vest must be used for safety. They are commonly used by “the military, law enforcement officials,
This maximises the intermolecular forces between the chains as they are able to pack closely together. However, this reduces the flexibility and is therefore quite rigid and strong. This isotactic polyvinyl chloride structure occurs very little. Another structure that is produced very little is the syndiotactic PVC. The syndiotactic PVC has a regular arrangement and has similar properties of flexibility, rigidity and strength to the isotactic PVC as shown in Figure #.
This new invention had many better qualities and/or abilities than any other material in use already. Nylons are mostly known for their abilities to be dyed, to be unharmed by many kinds of household cleaning products or greases and oils, its rapid drying time, and above all, its silk-like appearance (The World Book). Nylons¡¯ tensile strength is greater than that of cottons, rayon, silk, and wool (Encarta). They also have characteristics that include elasticity, easy to clean,...
The bulletproof clothing basically looks like a very strong net. Bulletproof clothing is made up of seven layers of bullet-resistant webbing. The three types of the layers are the carrier, Kevlar and plastic film. The body armor just looks like a very strong net. Kevlar is strong, but they also make bulletproof with another material called vectran.
According to Albert Einstein he was the last guy to know everything. He was such a smart man that we decided to follow his words in the pursuit of greatness. That is why we have made one of the world's best piece of safety equipment. The Indestructible Helmet is a multi layered helmet that is shock resistant and crack resistant. Our company has been saving hundreds of lives for two years now, in fact we have become the best overall helmet on the market.
Out of the many technologies being developed in the 21st century I have a major interest in assisting in the development of new full-body ballistic armor. The need for a lightweight, highly mobile, and effective body armor for military and law enforcement agencies has existed and continually increased through time. DARPA now has programs dedicated to producing such body armor and has made great advances in this area. This concept’s goal is to reduce the individual’s fatigue by removing the weight associated with traditional materials used in body armor while greatly increasing the surface area protected. Currently, the body armor worn by those in combat covers only the vital organs in the torso and portions of the head. These systems are heavy