1.Classification of Aramid Fibers
Aramid fibers can be divided into two main types according to their different chemical structures: one type is characterized by heat resistance, flame retardant meso-aramid, known as poly(p-toluene-m-toluoyl-m-toluamide), abbreviated as PMTA, known as Nomex in the U.S., and Aramid 1313 in China; and the other type is characterized by high-strength, high elasticity modulus, and heat resistance, known as poly(p-phenylene terephthalamide), abbreviated as PPTA, known as Kevlar in the U.S., Technora in Japan, Twaron in the Netherlands, Tevlon in Russia, and Tevlon in China. P-phenylenediamine, abbreviated as PPTA, the trade name of the United States for Kevlar, Japan for Technora, the Netherlands for Twaron, Russia for Tevlon, China called aramid 1414.
Aramid fiber is a high-temperature-resistant, high-strength, high-elastic model species of fibers, both the mechanical properties of inorganic fibers and organic fibers, processing performance, density and polyester fibers are comparable. At the same time also has excellent chemical resistance, radiation resistance, fatigue resistance, dimensional stability and other good properties and rubber resin with certain adhesive properties. Currently the product has two forms of pulp and fiber. Become aerospace, rubber, resin industry, electronic and electrical equipment, transportation, sports equipment and civil construction and other areas of new materials. Especially with aramid fiber preparation of high-performance aramid paper composite materials can be widely used as high-level electrical insulation materials, printed circuit boards and electromagnetic wave protection materials and other highly regarded.
2. Aramid Fiber Morphology
1414 fiber is bright yellow, 1313 fiber is bright white. Respectively with short fibers (or filament) and pulp fiber (or precipitation fiber) two fiber forms. Filament is mainly used in textiles, rubber and other fields, the paper industry using staple fiber and pulp fiber.
Post time: Sep-28-2023