High Performance Fibers

Afshari, Mehdi; Kotek, Richard; Chen, Peng

doi:10.1002/9781118171950.ch9

Cited by 6 publications

(10 citation statements)

References 160 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The heat release capacity of p-aramid was found to be 292 J/g-K and the total heat released was reported to be 15 kJ/g. It is generally accepted that in order to be considered flame resistant, a material should have a heat release capacity less than 100 kJ/g-K [11]. These results suggest that p-aramid is not inherently flame retardant.…”

Section: Fire Behaviormentioning

confidence: 99%

“…Indeed, in 1979, Arnold et al regrouped a large number of high performance polymers that were available at the time in order to study their thermal behavior. Since then, quite a number of reviews that have been written regarding the thermal properties of high performance polymers [4,[9][10][11]. However, few works encompass the thermal stability and the fire behavior of high performance polymers.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Thermal Degradation and Fire Behavior of High Performance Polymers

2019

View full text Add to dashboard Cite

show abstract

Section: Fire Behaviormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Thermal Degradation and Fire Behavior of High Performance Polymers

2019

View full text Add to dashboard Cite

show abstract

“…Another type of PPTA fibers, named Twaron  , was produced in 1978 by Teijin Aramid B.V. in Netherland 1,5,[8][9][10][11][12] . Poly (p-phenylene terephthalamide) abbreviated PPTA, are organic fibers acronym originating from aromatic poly (amide) with a distinct chemical composition of wholly aromatic polyamides which at least 85% of amide groups (-CO-NH-) are bond directly to two aromatic rings 2,[12][13][14][15] .…”

Section: Aramid Storymentioning

confidence: 99%

Microstructural developments of poly (p-phenylene terephthalamide) fibers during heat treatment process: a review

et al. 2014

View full text Add to dashboard Cite

Poly (p-phenylene terephthalamide) fibers prepared by wet or dry-jet wet spinning processes have a notable response to very brief heat treatment (seconds) under tension. The modulus of the as-spun fiber can be greatly affected by the heat treatment conditions (temperature, tension and duration). The crystallite orientation and the fiber modulus will increase by this short-term heating under tension. Poly (p-phenylene terephthalamide) fibers have a very high molecular orientation (orientation angle 12-20°). Kevlar  and Twaron  fibers are poly (p-phenylene terephthalamide) fibers. This review reports for PPTA fibers the heat treatment techniques, devices and its process conditions. It reports in details the structural relationships between the fiber properties which are influenced by the heat treatment process. In particular, focused deeply on the effect of the crystal structure and the morphology of the fibers on the mechanical properties of PPTA fibers.

show abstract

“…Ultra-high molecular weight polyethylene (UHMWPE) is a linear flexible polymer [1] of C 2 H 4 molecules with a molecular weight of at least three million. It is manufactured using a patented gel-spun process developed by DSM (Dutch State Mines) corporation in Netherlands and is branded under the name Dyneema ® .…”

Section: Introductionmentioning

confidence: 99%

“…Traditionally, transverse impact onto yarns and fabrics was studied using the classical Smith theory [4,5] as shown in Equation (1). Smith theory proposed that the breaking velocity of the yarn can be predicted in terms of the longitudinal wave speed, "c", and the uniaxial tensile failure strain, ε, of the material.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Transverse Loading Behavior of Ultra-High Molecular Weight Polyethylene Yarns

Shah

Sockalingam

2020

Fibers

View full text Add to dashboard Cite

Ultra-high molecular weight polyethylene (UHMWPE) Dyneema® SK-76 fibers are widely used in personnel protection systems. Transverse ballistic impact onto these fibers results in complex multiaxial deformation modes such as axial tension, axial compression, transverse compression, and transverse shear. Previous experimental studies on single fibers have shown a degradation of tensile failure strain due to the presence of such multi-axial deformation modes. In this work, we study the presence and effects of such multi-axial stress-states on Dyneema® SK-76 yarns via transverse loading experiments. Quasi-static transverse loading experiments are conducted on Dyneema® SK-76 single yarn at different starting angles (5°, 10°, 15°, and 25°) and via four different indenter geometries: round (radius of curvature (ROC) = 3.8 mm), 200-micron, 20-micron, and razor blade (ROC ~2 micron). Additionally, transverse loading experiments were also conducted for a 0.30 cal. fragment simulating projectile (FSP) and compared to other indenters. Experimental results show that for the round, 200-micron indenter, and FSP geometry the yarn fails in tension with no degradation in axial failure strain compared to the uniaxial tensile failure strain of SK-76 yarn (2.58%). Whereas for the 20-micron indenter and razor blade, fibers fail progressively in transverse shear followed by progressive strength degradation of the yarn. Strength degradation of yarn occurs at relatively low strains of 0.6–0.7% with eventual failure of the yarn at approximately ~1.8% and ~1.5% strain for the 20-micron indenter and razor blade, respectively. Breaking angles (range of 10°–30°) are observed to have little effect on the failure strain for all indenter geometries.

show abstract

High Performance Fibers

Cited by 6 publications

References 160 publications

Thermal Degradation and Fire Behavior of High Performance Polymers

Thermal Degradation and Fire Behavior of High Performance Polymers

Microstructural developments of poly (p-phenylene terephthalamide) fibers during heat treatment process: a review

Experimental Investigation of Transverse Loading Behavior of Ultra-High Molecular Weight Polyethylene Yarns

Contact Info

Product

Resources

About