Revision as of 00:09, 10 January 2024 edit ItsJustEngineering (talk \| contribs) 1 edit m Corrected unit of measure Tags: Reverted Visual edit Mobile edit Mobile web edit ← Previous edit		Revision as of 00:10, 10 January 2024 edit undo Materialscientist (talk \| contribs) Edit filter managers, Autopatrolled, Checkusers, Administrators 1,993,334 edits m Reverted edits by ItsJustEngineering (talk) (HG) (3.4.12) Tags: Huggle Rollback Next edit →
Line 37: {{Cleanup section\|reason=Currently in a disorderly list format without bullet points. Maybe organize by how the fibers are used (rope, sheet, composite, single-strand)?\|date=April 2023}} [[File:LIROS Dyneema hollow.jpg\|thumb\|LIROS Dyneema hollow]] '''Dyneema''' and '''Spectra''' are [[brand]]s of lightweight high-strength oriented-strand gels spun through a [[spinneret (polymers)\|spinneret]]. They have [[yield strength]]s as high as {{convert\|2.4\|GPa\|abbr=on}} and [[density]] as low as {{convert\|0.97\|g/cm\|abbr=on}} ~~(note: units are incorrect for densities - should be g/cm^3)~~ (for Dyneema SK75).<ref>Crouch, Ian. 2016. The Science of Armour Materials. P229. Woodhead Publishing.</ref> High-strength steels have comparable yield strengths, and low-carbon steels have yield strengths much lower (around {{convert\|0.5\|GPa\|abbr=on}}). Since steel has a specific gravity of roughly 7.8, these materials have a strength-to-weight ratios eight times that of high-strength steels. Strength-to-weight ratios for UHMWPE are about 40% higher than for [[aramid]]. The high qualities of UHMWPE filament were discovered by Albert Pennings in 1968, but commercially viable products were made available by DSM in 1990 and Southern Ropes soon after.<ref>{{cite web \|title=The story of Dyneema® \|website=Dyneema® Project \|url=https://www.thedyneemaproject.com/en_GB/the-fabrics/dyneema.html}}</ref> Derivatives of UHMWPE yarn are used in composite plates in [[armor]], in particular, [[personal armor]] and on occasion as [[vehicle armor]]. Civil applications containing UHMWPE fibers are cut-resistant gloves, tear-resistant [[pantyhose\|hosiery]], [[bow (weapon)\|bow]] strings, [[sling (climbing equipment)\|climbing equipment]], automotive [[winch]]ing, [[fishing line]], spear lines for [[spearfishing\|spearguns]], high-performance [[sail]]s, suspension lines on sport [[parachute]]s and [[paraglider]]s, [[rigging]] in [[yachting]], kites, and kite lines for kites sports.

Ultra-high-molecular-weight polyethylene: Difference between revisions