Aramid Fiber nrog lub zog siab thiab zoo heev thaum tshav kub kub / nplaim taws
KEVLAR® (Para aramids)
Para aramids - xws li Kevlar®- paub txog lawv lub zog zoo kawg thiab zoo heev thaum tshav kub kub / nplaim taws.Qhov siab ntawm crystallinity ntawm fibers yog lub ntsiab lub cev yam ntxwv uas hloov lub zog zoo heev ua ntej tawg.
Meta-Aramid (Nomex®)
Meta aramids yog ntau hom polyamide uas muaj cov cua sov / nplaim tsis kam.Lawv muaj qhov zoo heev abrasion tsis kam thiab tsis kam rau tshuaj degradation.
| Meta-Aramid | Standard Tenacity Para-Aramid | High Modulus Para-Aramid | ||
| Hom filament loj (dpf) | 2 | 1.5 | 1.5 | |
| Lub ntiajteb txawj nqus (g / cm3) | 1.38 ib | 1.44 ib | 1.44 ib | |
| Lub zog (gpd) | 4-5 | 20-25 | 22-26 | |
| Initial Modulus (g / dn) | 80-140 : kuv | 500-750 | 800-1000 | |
| Elongation @ Break (%) | 15-30 | 3-5 | 2-4 | |
| Kev ua haujlwm tsis tu ncua Kub (F) | 400 | 375 | 375 | |
| Decomposition Kub (F) | 750 | 800-900 Nws | 800-900 Nws | |
cov khoom piav qhia
Tsis zoo li lwm cov ntaub ntawv thiab cov fibers, uas yuav xav tau cov txheej txheem thiab ua tiav los txhim kho lawv cov cua sov thiab / lossis tiv thaiv nplaim taws, Kevlar® thiab Nomex® fibers yog cov nplaim hluav taws kub-resistant thiab yuav tsis yaj, poob, los yog txhawb kev sib txuas.Hauv lwm lo lus, kev tiv thaiv thermal muab los ntawm Kevlar® thiab Nomex® yog qhov ruaj khov - nws cov nplaim hluav taws kub tsis tuaj yeem raug ntxuav tawm lossis hnav tawm.Cov ntaub ntawv uas yuav tsum tau kho, txhawm rau txhim kho lawv qhov kev tiv thaiv hluav taws (thiab nws qhov kev tiv thaiv yuav ploj mus nrog ntxuav thiab hnav raug) yog hu ua "fire retardant."Cov uas muaj kev tiv thaiv zoo tshaj plaws thiab ruaj khov (xws li Kevlar®, Nomex®, thiab lwm yam) raug xa mus rau "hluav taws kub".
Qhov zoo tshaj plaws tshav kub thiab nplaim hluav taws muaj peev xwm tso cai rau cov fibers - thiab textiles tsim los ntawm lawv - kom ua tau raws li ntau yam kev lag luam cov qauv kev lag luam uas lwm cov ntaub ntawv tsis tuaj yeem.
Ob leeg fibers yog siv (yooj yim thiab ua ke) rau ntau yam khoom hauv teb xws li:
- Kev tua hluav taws
- Kev tiv thaiv
- Forging thiab Smelting
- Vuam
- Hluav taws xob thiab siv hluav taws xob
- Mining
- Kev sib tw
- Aerospace thiab Outer Space
- Refining thiab Tshuaj
- Thiab ntau lwm tus
Raws li nrog rau tag nrho cov kev ua tau zoo fibers, ob leeg Nomex® thiab Kevlar® muaj lawv qhov tsis muaj zog thiab kev txwv.Piv txwv li, ob qho tib si thaum kawg yuav degrade hauv kev ua tau zoo thiab xim, nrog rau lub sij hawm ntev rau UV teeb.Tsis tas li ntawd, raws li cov ntaub ntawv ntxeem tau, lawv yuav nqus dej / noo noo, thiab yuav nce qhov hnyav thaum lawv nqa dej.Yog li ntawd, thaum ntsuas cov fiber ntau rau ib daim ntawv thov tshwj xeeb, nws yog ib qho tseem ceeb uas yuav tsum tau ua tib zoo xav txog txhua yam kev ua, ib puag ncig, thiab lub sijhawm uas cov khoom kawg yuav raug nthuav tawm.