Aramid Fiber Yokhala Ndi Mphamvu Zapamwamba komanso Kutentha Kwabwino Kwambiri / Kulimbana ndi Lawi
KEVLAR® (Para aramids)
Para aramids -monga Kevlar®- amadziwika chifukwa champhamvu kwambiri komanso kukana kutentha / moto.Kuchuluka kwa crystallinity ya ulusi ndi khalidwe lalikulu la thupi lomwe limasamutsa mphamvu yabwinoyi isanasweka.
Meta-Aramid (Nomex®)
Meta aramids ndi mitundu yosiyanasiyana ya polyamide yomwe ili ndi kutentha kwambiri / kukana moto.Amakhala ndi kukana kwamphamvu kwa abrasion komanso kukana kuwonongeka kwa mankhwala.
| Meta-Aramid | Standard Tenacity Para-Aramid | High Modulus Para-Aramid | ||
| Kukula kwake kwa ulusi (dpf) | 2 | 1.5 | 1.5 | |
| Kukokera Kwapadera (g/cm3) | 1.38 | 1.44 | 1.44 | |
| Kukhazikika (gpd) | 4-5 | 20-25 | 22-26 | |
| Modulus Yoyamba (g/dn) | 80-140 | 500-750 | 800-1000 | |
| Elongation @ Break (%) | 15-30 | 3-5 | 2-4 | |
| Kugwira Ntchito Mopitirira Kutentha (F) | 400 | 375 | 375 | |
| Kuwola Kutentha (F) | 750 | 800-900 | 800-900 | |
Mafotokozedwe Akatundu
Mosiyana ndi zida zina ndi ulusi, zomwe zingafunike zokutira ndi kumaliza kuti zithandizire kutentha ndi / kapena chitetezo chamoto, ulusi wa Kevlar® ndi Nomex® umakhala wosagwirizana ndi malawi ndipo susungunuka, kudontha, kapena kuthandizira kuyaka.Mwa kuyankhula kwina, chitetezo chamafuta choperekedwa ndi Kevlar® ndi Nomex® ndi chokhazikika - kukana kwake kwa moto wapamwamba sikungathe kutsukidwa kapena kutha.Zida zomwe ziyenera kuthandizidwa, kuti ziwongolere ntchito zawo zozimitsa moto (ndipo zomwe chitetezo chawo chimatha kutha ndi kutsuka ndi kuvulazidwa) zimadziwika kuti "zoletsa moto."Omwe ali ndi chitetezo chapamwamba komanso chokhazikika (ie, Kevlar®, Nomex®, ndi zina zotero) amatchedwa "kukana moto."
Kutentha kwapamwambaku komanso mphamvu yolimbana ndi moto imalola ulusiwu - ndi nsalu zopangidwa kuchokera kwa iwo - kuti zikwaniritse miyezo yamakampani ambiri zomwe zida zina sizingathe.
Ulusi wonsewo umagwiritsidwa ntchito (modziyimira pawokha komanso kuphatikiza) pazogulitsa zambiri m'magawo monga:
- Kuzimitsa moto
- Chitetezo
- Kupanga ndi Kusungunula
- Kuwotcherera
- Zamagetsi ndi Zothandizira
- Migodi
- Mpikisano
- Azamlengalenga ndi Outer space
- Kuyenga ndi Chemical
- Ndi ena ambiri
Mofanana ndi ma fiber onse omwe amagwira ntchito kwambiri, onse a Nomex® ndi Kevlar® ali ndi zofooka ndi zofooka zawo.Mwachitsanzo, onsewa amatha kutsika pang'onopang'ono m'mawonekedwe ake komanso mtundu wake, ndikuwunikira kwanthawi yayitali ku kuwala kwa UV.Kuphatikiza apo, monga zida za porous, zimayamwa madzi / chinyezi, ndipo zimalemera akamamwa madzi.Chifukwa chake, powunika ulusi wogwiritsa ntchito inayake, ndikofunikira nthawi zonse kuganizira zonse zomwe zingatheke, malo, ndi nthawi yomwe chinthu chomalizacho chidzawonekera.