nkhani

1.Kugawa kwa Aramid Fibers
Ulusi wa Aramid ukhoza kugawidwa m'magulu awiri akuluakulu malinga ndi kapangidwe kake kosiyanasiyana: mtundu umodzi umadziwika ndi kukana kutentha, meso-aramid yoletsa moto, yotchedwa poly(p-toluene-m-toluoyl-m-toluamide), yofupikitsidwa ngati PMTA, yotchedwa Nomex ku US, ndi Aramid 1313 ku China; ndipo mtundu wina umadziwika ndi mphamvu yayikulu, kusinthasintha kwakukulu, komanso kukana kutentha, yotchedwa poly(p-phenylene terephthalamide), yofupikitsidwa ngati PPTA, yotchedwa Kevlar ku US, Technora ku Japan, Twaron ku Netherlands, Tevlon ku Russia, ndi Tevlon ku China. P-phenylenediamine, yofupikitsidwa ngati PPTA, dzina lamalonda la United States la Kevlar, Japan la Technora, Netherlands la Twaron, Russia la Tevlon, China lotchedwa aramid 1414.

Ulusi wa AramidNdi mtundu wa ulusi wosasunthika kutentha kwambiri, wamphamvu kwambiri, komanso wotanuka kwambiri, womwe umagwiritsidwa ntchito kwambiri ndi ulusi wachilengedwe, ndipo ulusi wa organic umafanana ndi makina ake. Nthawi yomweyo, ulusi wa polyester umalimbana bwino ndi mankhwala, kukana kuwala kwa dzuwa, kukana kutopa, kukhazikika kwa mawonekedwe ndi zinthu zina zabwino komanso ulusi wa rabara wokhala ndi zinthu zina zomatira. Pakadali pano, mankhwalawa ali ndi mitundu iwiri ya zamkati ndi ulusi. Amakhala ndi ndege, rabara, utomoni, zida zamagetsi ndi zamagetsi, mayendedwe, zida zamasewera ndi zomangamanga ndi madera ena azinthu zatsopano. Makamaka ndi ulusi wa aramid, kukonzekera kwa zinthu zopangidwa ndi pepala la aramid lokhala ndi ntchito yapamwamba kungagwiritsidwe ntchito kwambiri ngati zinthu zotenthetsera zamagetsi zapamwamba, ma board osindikizidwa ndi zida zoteteza mafunde amagetsi ndi zina zomwe zimalemekezedwa kwambiri.

2. Ulusi wa AramidKapangidwe ka thupi
Ulusi wa 1414 ndi wachikasu chowala, ulusi wa 1313 ndi woyera wowala. Motsatana ndi ulusi waufupi (kapena ulusi wa pulp) ndi ulusi wa pulp (kapena ulusi wa precipitation) mitundu iwiri ya ulusi. Ulusi umagwiritsidwa ntchito makamaka mu nsalu, rabara ndi minda ina, makampani opanga mapepala pogwiritsa ntchito ulusi wofunikira ndi ulusi wa pulp.