Kugwiritsa ntchito nsalu ya aramid fiber mu zinthu zoteteza zipolopolo

Ulusi wa Aramidndi ulusi wopangidwa ndi zinthu zapamwamba kwambiri, wokhala ndi mphamvu zambiri, modulus yapamwamba, kukana kutentha kwambiri, kukana asidi ndi alkali, wopepuka, ndi makhalidwe ena abwino kwambiri. Mphamvu yake imatha kufika kuwirikiza ka 5-6 kuposa waya wachitsulo, modulus ndi nthawi 2-3 kuposa waya wachitsulo kapena ulusi wagalasi, kulimba kwake ndi nthawi 2 kuposa waya wachitsulo, ndipo kulemera kwake ndi 1/5 yokha kuposa waya wachitsulo. Pa kutentha kwakukulu kwa 560 ℃, ulusi wa aramid ukhoza kukhalabe wokhazikika, wosawola, komanso wosasungunuka. Kuphatikiza apo, uli ndi mphamvu zabwino zotetezera komanso zoletsa ukalamba, komanso umakhala nthawi yayitali yogwira ntchito. Pakadali pano, zida zodziwika bwino zoteteza zipolopolo (monga ma vesti osateteza zipolopolo, ndi zipewa zoteteza zipolopolo) zimagwiritsidwa ntchito kwambirinsalu za ulusi wa aramidPakati pawo, nsalu ya aramid yotsika mphamvu yokoka ndi imodzi mwa zipangizo zazikulu zotetezera zipolopolo. Poyerekeza ndi malaya amkati a nayiloni ndi zipewa zachitsulo, malaya amkati ndi zipewa zoteteza zipolopolo zokhala ndi ulusi wowonjezera wa aramid sizongokhala zazing'ono komanso zopepuka komanso 40% zogwira ntchito bwino polimbana ndi zipolopolo.

Mfundo yogwirira ntchito ya ma vesti osagwidwa ndi zipolopolo ingamveke motere: chipolopolo chikagunda nsalu ya vesti, mafunde ogwedezeka ndi opsinjika amapangidwa mozungulira malo omwe akugunda. Mafunde awa kudzera mu kufalikira mwachangu ndi kufalikira kwa ulusi, amatha kusuntha ulusi wambiri, kenako nkupita kudera lalikulu kuti akatenge mphamvu ya mafunde ogwedezeka. Ndi kuyamwa kwamphamvu kumeneku komwe kumachepetsa bwino mphamvu ya zipolopolo pa thupi la munthu, motero kuzindikira mphamvu yoteteza ya ma vesti osagwidwa ndi zipolopolo.

Zipangizo zoteteza zipolopolo ndi magwiridwe ake abwino kwambiri

Pakatikati pa ma vesti osalowa zipolopolo pali zinthu zamphamvu kwambiri zomwe amagwiritsa ntchito, zomwe ulusi wa para-aramid, womwe umadziwikanso kuti ulusi wa para-aromatic polyamide, ndi zinthu zodziwika bwino zoteteza zipolopolo. Kapangidwe kake ka mankhwala kofanana kwambiri kamapangitsa unyolo wa mamolekyu kukhala wolimba kwambiri, zomwe zimapangitsa kuti ukhale wosiyana kwambiri ndi ma polima osinthasintha a unyolo wamba pankhani ya kusungunuka, mphamvu za rheological, komanso kukonza.

Ulusi wa Para-aramid umadziwika ndi makhalidwe awo abwino kwambiri akuthupi komanso amakina, kuphatikizapo mphamvu zawo zapamwamba kwambiri, modulus yapamwamba, komanso kupepuka. Mphamvu zawo zapadera zimakhala zapamwamba kasanu kapena kasanu ndi kamodzi kuposa waya wamba wachitsulo, ndipo modulus yawo yeniyeni imaposa waya wachitsulo ndi nthawi ziwiri kapena zitatu. Kuphatikiza apo, ulusiwu umakhala ndi makhalidwe abwino kwambiri a kutentha, ndi kukana kutentha kwambiri, kukulitsa pang'ono, komanso kutentha kochepa, ndipo sutentha kapena kusungunuka. Ulusi wa Para-aramid umadziwikanso kuti "ulusi wosagwira zipolopolo" chifukwa cha kutchinjiriza kwawo bwino, kukana dzimbiri, komanso kukana kukalamba.

Kugwiritsa Ntchito ndi Mapeto a Para-Ulusi wa Aramid

Ulusi wa Para-aramid, womwe ndi chinthu chofunikira kwambiri pamakampani achitetezo ndi ankhondo, umagwiritsidwa ntchito kwambiri padziko lonse lapansi. Malinga ndi ziwerengero, kuchuluka kwa aramid mu ulusi woteteza ku US kuli kopitilira 50% ndi 10% ku Japan. Makhalidwe ake opepuka amapanga ma vesti ndi zipewa za aramid zoteteza zipolopolo, zomwe zingathandize kwambiri kuyankha mwachangu kwa gulu lankhondo. Kuphatikiza apo, para-aramid imagwiritsidwa ntchito kwambiri m'magalimoto, kulumikizana, ndege, ndi masewera akunja chifukwa cha magwiridwe ake abwino kwambiri.