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Encyclopedia > Aramid

Aramid fiber (1961) is a fire-resistant and strong synthetic fiber. It is used in aerospace and military applications, for "bullet-proof" body armor fabric, and as an asbestos substitute. The term is a shortened form of "aromatic polyamide". Fiber or fibre[1] is a class of materials that are continuous filaments or are in discrete elongated pieces, similar to lengths of thread. ... Synthetic fibers are the result of an extensive search by scientists to increase and improve upon the supply of naturally occurring animal and plant fibers that have been used in making cloth. ... Bullet resistant vest A bullet-resistant vest (body armor) - is an article of protective clothing that works as a form of armour to minimize injury from projectiles fired from handguns, shotguns and rifles . ... It has been suggested that Textile be merged into this article or section. ... Fibrous asbestos on muscovite Asbestos Asbestos Asbestos (a misapplication of Latin: asbestos quicklime from Greek ἄσβεστος: a-, not; sbestos, extinguishable) describes any of a group of fibrous metamorphic minerals of the hydrous magnesium silicate variety. ... In chemistry, an aromatic molecule is one in which electrons are free to cycle around circular arrangements of atoms, which are alternately singly and doubly bonded to one another. ... A polyamide is a polymer containing monomers joined by peptide bonds. ...


A well-known type of aramid fiber (a para-aramid nylon) is commonly known by its DuPont trade name, Kevlar, or Teijin trade name Twaron. It was developed by Stephanie Kwolek. An especially fireproof meta variant is Nomex. Peoples Action for Rural Awakening The word Para- in English, is an affix of ancient Greek and Latin origin, mostly used as a prefix. ... Nylon represents a family of synthetic polymers, a thermoplastic material, invented in 1935 by Wallace Carothers at DuPont. ... This article is about the DuPont company. ... Kevlar is the DuPont Companys brand name for material made out of synthetic fiber of poly-paraphenylene terephthalamide which is constructed of para-aramid fibers that the company claims is five times stronger than the same weight of steel, while being lightweight, flexible and comfortable. ... Stephanie Kwolek (born July 31, 1923) is a Polish-American chemist who discovered poly-paraphenylene terephtalamide, better known as Kevlar. ... A large bonfire. ... This article is about the word Meta. ... NOMEX® is the brand name of a flame retardant meta-aramid material marketed and first discovered by DuPont in the 1970s. ...

Contents


Aramid fiber characteristics

  • sensitive to degradation from ultraviolet radiation
  • good resistance to abrasion, organic solvents, and thermal degradation
  • sensitive to moisture and salts
  • nonconductive
  • no melting point
  • low flammability
  • good fabric integrity at elevated temperatures
  • para-aramid fibers such as Kevlar and Twaron, which have a slightly different molecular structure, also provide outstanding strength-to-weight properties, and have high tenacity, and high Young's modulus.

Ultraviolet (UV) light is electromagnetic radiation with a wavelength shorter than that of visible light, but longer than soft X-rays. ... Radiation in physics is a process of emission of energy or particles. ... Abrasion on the palm of a right hand, shortly after falling Abrasions on elbow and lower arm, still healing. ... The melting point of a solid is the temperature at which it changes state from solid to liquid. ... Temperature is also the name of a song by Sean Paul. ... In chemistry, a molecule is an aggregate of at least two atoms in a definite arrangement held together by special forces. ... It has been suggested that this article or section be merged into Strength of materials. ... In solid mechanics, Youngs modulus (also known as the modulus of elasticity, elastic modulus or tensile modulus) is a measure of the stiffness of a given material. ...

Major industrial uses

Men and women wearing suits, an example of one of the many modern forms of clothing (from the 1937 Chicago Woolen Mills catalog) Clothing is defined, in its broadest sense, as coverings for the torso and limbs as well as coverings for the hands (gloves), feet (socks, shoes, sandals, boots... Pickelhaube of a Swedish Royal Guard soldier For the band, see Helmet A helmet (a 15th century loan from Middle French, a diminutive of Frankish helm, from Proto-Germanic *khelmaz, PIE *kelmo- a cover) is a form of protective clothing worn on the head and usually made of metal or... Bullet resistant vest A bullet-resistant vest (body armor) - is an article of protective clothing that works as a form of armour to minimize injury from projectiles fired from handguns, shotguns and rifles . ... Polyethylene or polyethene is a thermoplastic commodity heavily used in consumer products (over 60M tons are produced worldwide every year). ... Dyneema® is a synthetic fiber based on UHMWPE, 15 times stronger than steel and up to 40% stronger than Kevlar. ... Composite materials (or composites for short) are engineered materials made from two or more constituent materials that remain separate and distinct on a macroscopic level while forming a single component. ... Fibrous asbestos on muscovite Asbestos Asbestos Asbestos (a misapplication of Latin: asbestos quicklime from Greek ἄσβεστος: a-, not; sbestos, extinguishable) describes any of a group of fibrous metamorphic minerals of the hydrous magnesium silicate variety. ... In chemistry, alchemy and water treatment, filtration is the process of using a filter to mechanically separate a mixture. ... Fabric may mean: Cloth, a flexible artificial material made up of a network of natural or artificial fibres Fabric (club), a London dance club Fibre Channel fabric, a network of Fibre Channel devices enabled by a Fibre Channel switch using the FC-SW topology This is a disambiguation page, a... Firestone tire A tire or tyre (see spelling differences) is a device covering the circumference of a wheel. ... Rubber is an elastic hydrocarbon polymer which occurs as a milky emulsion (known as latex) in the sap of several varieties of plants though can be produced synthetically. ... Coils of rope used for long-line fishing A rope (IPA: ) is a length of fibers, twisted or braided together to improve strength for pulling and connecting. ... A sail is any type of surface intended to generate thrust by being placed in a wind —in essence a vertically-oriented wing. ... It has been suggested that Textile be merged into this article or section. ... Some boats in a harbor in Miami Beach, Florida A boat is a watercraft, usually smaller than most ships. ... Drum carried by John Unger, Company B, 40th Regiment New York Veteran Volunteer Infantry Mozart Regiment, December 20, 1863 Several American Indian-style drums for sale at the National Museum of the American Indian. ... Closeup of a loudspeaker driver Wall-mounted loudspeaker. ... Some boats in a harbor in Miami Beach, Florida A boat is a watercraft, usually smaller than most ships. ...

Production

The Federal Trade Commission definition for Aramid fiber is "A manufactured fiber in which the fiber-forming substance is a long-chain synthetic polyamide in which at least 85% of the amide linkages are attached directly to two aromatic rings." FTC headquarters, Washington, D.C. The Federal Trade Commission (or FTC) is an independent agency of the United States government, established in 1914 by the Federal Trade Commission Act. ... A peptide bond is a chemical bond formed between two molecules when the carboxyl group of one molecule reacts with the amino group of the other molecule, releasing a molecule of water (H2O). ...


Aramid fiber is produced by spinning a solid fiber from a liquid chemical blend. This relies on a co-solvent with an ionic component (calcium chloride) to occupy the hydrogen bonds of the amide groups, and an organic solvent (N-methyl pyrrolinidone) to dissolve the aromatic polymer; prior to DuPont's (Kwolek's) invention of this process, no practical means of dissolving the polymer was known. A spinneret is a spiders silk spinning organ. ... In jewelry, a solid gold piece is the alternative to gold-filled or gold-plated jewelry. ... A liquid will assume the shape of its container. ... // An ion is an atom or a group of atoms (a chemical substance), or subatomic particle, with a net electric charge. ... R-phrases S-phrases , , RTECS number EV9800000, anhydrous EV9810000, dihydrate EV9830000, hexahydrate Supplementary data page Structure & properties n, εr, etc. ... Snapshot from a simulation of liquid water. ... N-methyl pyrrolinidone or NMP is used as an industrial solvent, especially in polymer processing. ... In chemistry, an aromatic molecule is one in which electrons are free to cycle around circular arrangements of atoms, which are alternately singly and doubly bonded to one another. ... Polymer is a term used to describe a very long molecule consisting of structural units and repeating units connected by covalent chemical bonds. ...


First U.S. Commercial Aramid Fiber Production: 1961, DuPont Company.


Current U.S. Aramid Fiber Producers: DuPont Company


See also


  Results from FactBites:
 
Aramid - Wikipedia, the free encyclopedia (260 words)
Aramid fiber (1961) is a fire-resistant and strong synthetic fiber.
The Federal Trade Commission definition for Aramid fiber is "A manufactured fiber in which the fiber-forming substance is a long-chain synthetic polyamide in which at least 85% of the amide linkages are attached directly to two aromatic rings."
Aramid fiber is produced by spinning a solid fiber from a liquid chemical blend.
Aramid-reinforced hiking boot laces (156 words)
Whether known by aramid or Kevlar™;, it is the same fiber and is famous for being the key component in bullet proof vests.
Trail Creek hiking boot laces are reinforced with Aramid 29 fiber.
Aramid is a high tensile strength fiber with a unique combination of toughness, extra-high tenacity with excellent thermal stability.
  More results at FactBites »

 
 

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