Lub tes tsho Aramid Fiber nrog Lub Zog Siab thiab Kev Tiv Thaiv Kub / Hluav Taws Zoo heev
KEVLAR® (Para aramids)
Cov khoom siv para aramid - xws li Kevlar®- paub txog lawv lub zog siab heev thiab tiv taus kub/hluav taws zoo heev. Qib siab ntawm crystallinity ntawm cov fibers yog lub ntsiab lus tseem ceeb uas hloov lub zog zoo no ua ntej tawg.
Meta-Aramid (Nomex®)
Meta aramids yog ntau yam polyamide uas muaj kev tiv taus kub/hluav taws zoo heev. Lawv muaj kev tiv taus kev sib txhuam zoo heev thiab tiv taus kev puas tsuaj los ntawm tshuaj lom neeg.
| Meta-Aramid | Kev Ua Haujlwm Txheem Para-Aramid | Cov Qauv Siab Para-Aramid | ||
| Qhov loj me ntawm cov filament (dpf) | 2 | 1.5 | 1.5 | |
| Lub zog nqus tshwj xeeb (g/cm3) | 1.38 | 1.44 | 1.44 | |
| Kev ua siab ntev (gpd) | 4-5 | 20-25 | 22-26 | |
| Modulus pib (g/dn) | 80-140 | 500-750 | 800-1000 | |
| Kev ntev @ Kev tawg (%) | 15-30 | 3-5 | 2-4 | |
| Kev Ua Haujlwm Txuas Ntxiv Mus Kub (F) | 400 | 375 | 375 | |
| Kev puas tsuaj Kub (F) | 750 | 800-900 | 800-900 | |
piav qhia txog khoom
Tsis zoo li lwm cov ntaub ntawv thiab cov fibers, uas yuav xav tau cov txheej thiab cov tiav kom txhim kho lawv cov cua sov thiab / lossis kev tiv thaiv hluav taws, Kevlar® thiab Nomex® fibers yog cov hluav taws-resistant thiab yuav tsis yaj, drip, lossis txhawb nqa combustion. Hauv lwm lo lus, qhov kev tiv thaiv thermal muab los ntawm Kevlar® thiab Nomex® yog tas mus li - nws cov hluav taws kub tiv thaiv tsis tuaj yeem ntxuav tawm lossis hnav mus. Cov ntaub ntawv uas yuav tsum tau kho, txhawm rau txhim kho lawv cov kev ua tau zoo tiv thaiv hluav taws (thiab uas lawv cov kev tiv thaiv yuav ploj mus nrog kev ntxuav thiab hnav raug) hu ua "fire retardant." Cov uas muaj kev tiv thaiv zoo dua thiab tas mus li (piv txwv li, Kevlar®, Nomex®, thiab lwm yam) raug xa mus rau "fire resistant."
Qhov muaj peev xwm tiv taus cua sov thiab hluav taws kub zoo no tso cai rau cov fibers no - thiab cov ntaub tsim los ntawm lawv - kom ua tau raws li ntau tus qauv kev lag luam uas lwm cov ntaub ntawv ua tsis tau.
Ob lub fibers siv (ywj siab thiab ua ke) rau ntau yam khoom hauv cov teb xws li:
- Kev tua hluav taws
- Kev Tiv Thaiv
- Kev Forging thiab Smelting
- Kev vuam
- Hluav Taws Xob thiab Khoom Siv
- Kev khawb av
- Kev sib tw khiav
- Aerospace thiab Outer space
- Kev ua kom huv thiab tshuaj lom neeg
- Thiab ntau lwm tus
Ib yam li cov fibers ua tau zoo, ob qho tib si Nomex® thiab Kevlar® muaj lawv qhov tsis muaj zog thiab kev txwv. Piv txwv li, ob qho tib si yuav thaum kawg poob qis hauv kev ua tau zoo thiab xim, nrog rau lub sijhawm ntev raug rau lub teeb UV. Tsis tas li ntawd, raws li cov ntaub ntawv porous, lawv yuav nqus dej / noo noo, thiab yuav nce qhov hnyav thaum lawv noj dej. Yog li ntawd, thaum soj ntsuam cov fiber (s) rau ib daim ntawv thov tshwj xeeb, nws yog ib qho tseem ceeb uas yuav tsum xav txog txhua yam kev ua, ib puag ncig, thiab lub sijhawm uas cov khoom kawg yuav raug.