The vests cost US800 each in 1914 a small fortune given the 20.67/1ozAu exchangerate back then equivalent to 50000 circa 2016 exceeding mean annual income. 14 A similar vest made by Polish inventor Jan Szczepanik in 1901 saved the life of Alfonso XIII of Spain when he was shot by an attacker.
It is used in vast applications such as aerospace engineering such as the body of the aircraft body armor bulletproof vests car brakes and boats. It is usually made into composites. Kevlar can also be combined with other fibers to produce hybrid composites. The hybrid composites of Kevlar are tabulated in Table 16.1.
Its made out of a flexible incredibly strong woven net fabric like Kevlar that stops the projectile and spreads its impact energy across the entire vest. Soft Armor Insert Flexing This type of armor is commonly found in complete vests but also can be found in inserts that can be added to bags carriers or behind stronger plates.
Kevlar is a heatresistant and strong synthetic fiber related to other aramids such as Nomex and Technora. Developed by Stephanie Kwolek at DuPont in 1965 1 2 3 this highstrength material was used first commercially in the early 1970s as a replacement for steel in racing tires.
Kevlar is the DuPont Company39s brand name for material made out of synthetic fiber of polyparaphenylene terephthalamide which is constructed of paraaramid fibers that the company claims is five times stronger than the same weight of steel while being lightweight flexible and comfortable. It is also very heat resistant and decomposes above ...
Most of our customers find that we already have an ideal material in stock among our 250 performance wovens which range in composition from basic polyester or polypropylene to specialty fibers like Nomex Teflon Rastex and Kevlar. Further customization is possible through our comprehensive array of mechanical finishes treatments and coatings.
Examples include ropes and cables bulletproof vests tennis strings hockey sticks as a composite snowboards jet engine enclosures brake and transmission friction parts and gaskets. Semiaromatic polyamides are often a cost effective alternative to the more expensive fully aromatic aramids.