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In generic usage, the fiber is referred to as PBO. [3] Zylon has 5.8 GPa of tensile strength, [4] which is 1.6 times that of Kevlar. Additionally, Zylon has a high Young's modulus of 270 GPa, meaning that it is stiffer than steel. Like Kevlar, Zylon is used in a number of applications that require very high strength with excellent thermal ...
Neutral water at room temp has not been shown in testing to negatively affect the performance of para-aramid or UHMWPE [13] but acidic, basic and some other solutions can permanently reduce para-aramid fiber tensile strength. [14] From 2003 to 2005, a large study of the environmental degradation of Zylon armor was undertaken by the US-NIJ.
Polybenzimidazole (PBI, short for poly[2,2’-(m-phenylen)-5,5’-bisbenzimidazole]) fiber is a synthetic fiber with a very high decomposition temperature. It does not exhibit a melting point, it has exceptional thermal and chemical stability, and it does not readily ignite. [1]
In 2011, Yantai Tayho introduced similar fiber which is called Taparan in China (see Production). Para-aramids are used in many high-tech applications, such as aerospace and military applications, for "bullet-proof" body armor fabric. Both meta-aramid and para-aramid fiber can be used to make aramid paper.
Commercial production of modacrylic fiber began in 1949 by Union Carbide Corporation in the United States. Modacrylic and acrylic fibers are similar in composition and at one time were in the same category. In 1960 the Federal Trade Commission decided to separate the two fibers and establish a category for each. [2]
Twaron (a brand name of Teijin Aramid) is a para-aramid, high-performance yarn. [1] It is a heat-resistant fibre, helps in ballistic protection and cut protection. [2] Twaron was developed in the early 1970s by the Dutch company Akzo Nobel's division Enka BV, later Akzo Industrial Fibers.
It is usually defined as the ultimate (breaking) force of the fiber (in gram-force units) divided by the denier. Because denier is a measure of the linear density, the tenacity works out to be not a measure of force per unit area, but rather a quasi-dimensionless measure analogous to specific strength. [ 45 ]
Lyocell is a semi-synthetic fiber used to make textiles for clothing and other purposes. [1] It is a form of regenerated cellulose made by dissolving pulp and dry jet-wet spinning . Unlike rayon made by the more common viscose processes, Lyocell production does not use carbon disulfide , [ 2 ] [ 3 ] which is toxic to workers and the environment.
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