KEVLAR By group 6 Raphael Correa Agastin Chan

KEVLAR By group 6: Raphael Correa Agastin Chan EJ Romualdez Alrick Chua Gerik Tan

KEVLAR • It is the registered trademark for a para-aramid synthetic fiber. Discovered by Stephanie Kwolek, Kevlar is a thin, very strong fiber. It has an excellent heat resistance. It is best known for its use in bulletproof garments. • Developed in the 1960’s-1970’s.

Para-aramid • Para-aramid fibers, provide outstanding strength-to-weight properties.

THERMAL PROPERTY Kevlar also has a thermal property. • Its thermal property maintains its strength down to the temperature (− 196°C). It is slightly stronger at low temperatures. At higher temperatures the strength is immediately reduced by about 10– 20%, and after some hours the strength even reduces further.

APPLICATIONS ARMOR • Kevlar is a well-known component of personal armor such as combat helmets, Ballistic face masks, and Ballistic vests.

• PERSONAL PROTECTION – Kevlar is used to manufacture gloves, sleeves, jackets, caps and other articles of clothing designed to protect users from cuts, abrasions and heat. Protective gear based on Kevlar is often considerably lighter and thinner than equivalent gear made of more traditional material.

A Kevlar bulletproof vest. http: //www. bulletproofbodyarmorhq. com/index. ph p? main_page=popup_image&p. ID=42&zenid=051 aab b 3887 ef 60 e 009449 b 1 aa 270 fcd

• SPORTS EQUIPMENT – It is used as an inner lining for some bicycle tires to prevent punctures. In table tennis, plies of Kevlar are added to paddles, in order to increase bounce and reduce weight. It is also used for motorcycle safety clothing, especially in the areas featuring padding such as shoulders and elbows.

The inner lining of a bicycle made from Kevlar. http: //www. majka. us/transam/images/brake. jpg

AUDIO EQUIPMENTS – Kevlar is sometimes used as a material on marching snare drums. It allows for an extremely high amount of tension, resulting in a cleaner sound. Remo's "Falam Slam" Patch is made with Kevlar and is used to reinforce bass drum heads where the beater strikes.

The Remo's "Falam Slam" Patch http: //i 66. photobucket. com/albums/h 257/Karl. Crafto n/kickpedalmuffle. jpg

Sources: • http: //en. wikipedia. org/wiki/Kevlar • http: //www. answers. com/topic/aramid • For the background picture: http: //en. wikipedia. org/wiki/File: Kevlar-3 Dballs. png