The Types of Aramid Flame Retardant Fabric
2015-11-23 09:11 | writer: admin
Since twentieth Century since the late 60's, there have been a variety of aramid developed and industrialized production. Aramid more variety, classifying the also have a variety of.
The first naming method according to the structure of division, is divided into the aramid fiber and aramid, ortho aramid. Para aramid good temperature resistance, strength, high modulus. Para aramid mainly to DuPont Kevlar series products as the representative. The high temperature air generator interface between bit Fong, but slightly lower strength modulus. Aramid mainly with DuPont Nomex series products as the representative. Ortho aramid mainly to DuPont Korex series products as the representative.
The second kind of method is named according to the structure of division, such as benzene ring para is the 14 position is on the benzene ring between the 13 position, such as aramid 14 is p-aminobenzoic acid benzene ring is connected with the 1 and 4 positions, para aramid aramid 1414 is said, Aramid 1313 is in front of said aramid.
The third kind of method is named according to the polymerization of monomer species, as said before Kevlar 14 aramid is also called type I, aramid fiber 1414 and Kevlar 1313 aramid is also called type II. When two of benzene amine, terephthalic acid and isophthalic acid and two benzene two amine common structure adding third monomer units such as 4, 4'- two amino two phenyl ether, 5 (6) - amine -2- (4- amino phenyl) benzimidazole obtained Kevlar aramid III type can be called. When the third monomer units for heterocyclic structures, people often called heterocyclic aramid.