Kevlar is the brand name of an aramid fiber material product developed by DuPont in the United States. The repeating unit of the chemical formula is -[-CO-C6H4 -CONH-C6H4-NH-]-The amide group attached to the benzene ring is a para-position structure (the meta-position structure is another product under the brand name Nomex, commonly known as fireproof fiber).
Why is Kevlar Good?
♥It’s strong but relatively light. The specific tensile strength (stretching or pulling strength) of Kevlar 29 and Kevlar 49 is over eight times greater than steel wire.
♥Unlike most plastics, it does not melt: it’s reasonably good at withstanding temperatures and decomposes only at about 500℃(932°F).
♥Unlike its sister material, Nomex, Kevlar can be ignited but burning usually stops when the heat source is removed.
♥Low temperatures do not affect Kevlar: DuPont found “no embrittlement or degradation” down to −196°C (−320°F).
♥Kevlar can resist attacks from many different chemicals, though long exposure to strong acids or bases will degrade over time.
♥In DuPont’s tests, Kevlar remained “virtually unchanged” after exposure to hot water for more than 200 days, and its super-strong properties are “virtually unaffected” by moisture.
The Application of Kevlar
Kevlar is probably best known for its use in bulletproof vests and knife-proof body armor, but it also has dozens of other applications.
For Example
♥Ballistics and defense
♥Composites in Aircraft structural parts
♥Belts and hoses for automotive heating/cooling systems
♥Fiber optic and electromechanical cables
♥Friction products and gaskets
♥Adhesives and sealants
♥Protective apparel in automobile and Aircraft
♥Heat resistant Kevlar gloves
More About Heat Resistant Kevlar Gloves
The exterior layer of heat resistant gloves is made of Kevlar, which can withstand the temperature up to 500℃(932°F). And the inner layer is the comfortable flame-retardant lining for overall protection.
Usages: Aluminum profile extrusion, steel/metal processing, welding, glassmaking, ceramics, thermoplastic industry, automobile manufacturing, etc.
Property
♥High-quality fiber – superior comfort, great air-permeability, high sensitivity
♥Anti-cutting – reduce cut hazards, ideal for the glass industry, metal stamping, etc.
♥Heat resistant – avoid burning injury or damage due to high temperature
♥Double insulated – both inside and outside layers are anti-static for safety
♥Extended cuff – protect the wrist area and reduce discomfort caused by heat
♥One size fits all – good adaption with hands, easy to control with ease
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