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Kevlar (para-aramid) [2] is a strong, heat-resistant synthetic fiber, related to other aramids such as Nomex and Technora.Developed by Stephanie Kwolek at DuPont in 1965, [3] [2] [4] the high-strength material was first used commercially in the early 1970s as a replacement for steel in racing tires.
By the late 20th century, starting in the 1970s and 1980s, new materials such as Kevlar and Twaron began replacing steel as the primary material for combat helmets, in an effort to improve weight reduction and ballistic protection, and protection against traumatic brain injury. This practice still continues into the 21st century, with further ...
The M1 helmet is a combat helmet that was used by the U.S. military from World War II until 1986, when it was succeeded by the PASGT helmet.The M1 helmet has become an icon of the US military, with its design inspiring other militaries around the world.
It uses a new, more advanced type of Kevlar and provides increased protection against handgun rounds. [ 5 ] A pad system and four-point retention system, similar to the cushions and straps found on the aforementioned skate, bicycle, and water helmets, replaces the nylon cord suspension system, sweatband and chinstrap found on the PASGT helmet ...
In 1973, DuPont was the first company to introduce a para-aramid fiber, calling it Kevlar; this remains one of the best-known [citation needed] para-aramids and/or aramids. In 1978, Akzo introduced a similar fiber with roughly the same chemical structure calling it Twaron .
First issued in 1983 to replace the M1 helmet. Former kevlar helmet used by the United States Army, Marine Corps, Navy. Used by the USAF, but is being phased out by the ACH [46] US Air Force. [47] Adopted by the Mexican Armed Forces in the 1990s to replace the M1 helmet. Replaced the M1 helmet of the Argentine army and modified with padded ...