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Kevlar: Properties and Applications

Yapay zekadan makale özeti

Basic Properties: Kevlar is a super-strong plastic made by DuPont, five times stronger than steel
It has a specific tensile strength over eight times greater than steel wire
Kevlar remains virtually unchanged after exposure to hot water for over 200 days
It has poor compressive strength, making it unsuitable for primary building materials
Manufacturing Process: Kevlar is made from poly-para-phenylene terephthalamide through condensation reaction
Wet spinning process aligns polymer molecules into tightly woven fibers
The fibers are cut and woven into a tough mat to create the final product
Applications: Best known for bulletproof vests and body armor
Used in car tires, brakes, and archery bows
Applied in aircraft bodies and boat structures
Used in building materials but not as primary structural support
Bulletproofing: More layers provide better protection against faster, higher-velocity bullets
Typical bulletproof vests contain 8-16 layers, sometimes up to 48
Kevlar absorbs and dissipates bullet energy effectively
Not suitable for protection against rifle bullets traveling at 850-900 m/s